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REL301/302 Reclosing Option Version 1.27 (08/19/03)Addendum to Instruction Book V1.21, 40-386.12C

Revisions

These revisions are to be added (inserted) to the REL301/302 Reclosing Option Instruction Book Version1.21, 40-386.12C, Revision History as page v.

Version 1.27 (08/19/03)

1. The Hold binary input of the autoreclose board has been modified. The input (terminals TB5-7 andTB5-8 ) is now designated as Hold / 52b input. There is also a new setting added “Hold/52b”. Whenset to “Hold”, the input will function as Hold input as earlier. When set to “52b” the input will monitorthe 52b status of the breaker which the unit is auto-reclosing. This makes the breaker status input tothe autoreclose board independent of the breaker status input given to the main protection unit. Thisis recommended when the line to be controlled is energized by two breakers such as in ring main orbreaker-and-a- half bus arrangements.The recommendation is to wire the 52b auxiliary contacts of both the breakers in series to the mainprotection of the relay unit (terminals TB4-5, TB4-6) so the protection will know that the line is deadwhen both breakers are open.Wire the 52b auxiliary contact of the breaker to be controlled to terminals TB5-7,8.(The 52a contact of the same breaker needs also to be wired to TB4- 3,4, if the setting “52a/ManClose” is set to “52a”). Please refer sketch enclosed.

2 With the addition of the new setting as above RCP software has been modified to revision V2.073 A software change has been done to accommodate a newer generation of communication port switch

device. This does not affect customer applications.

The external connection scheme in page 2-27 of the Instruction book also gets revised as per encloseddrawing.

Suggested schemeAutoreclose board of REL301/2 controls 52Lag breaker

Autoreclose / Breaker control option Board

Part of Ring main or Breaker-and-a-half scheme

52Lead 52Lag(Breaker beingcontrolled by REL301/2autoreclose option) REL301/2

52b-Lag

52b-Lead

52b-Lag

52b Hold / 52b 52a

REL302

+

-

TB5-7TB4-5

TB4-6

TB4-3

TB5-8 TB4-4

Version 1.22 (06/11/01)

1. Correction was done in sync timer. When manual close was done, the sync timer was mis-operating.With 52a is applied, while system was in lockout mode, sync timer counted down from the set valueto zero, but restarted the timer from 255sec. This was repeated many times.

2. When the “3RI Only” setting was selected for the Reclose Initiate and the 52b applied to the relay tooearly as with bench testing, the re-closer Sync timer used to malfunction. The timer counted downfrom 255 instead of from the set value. This has been rectified.

General corrections in the Instruction Book V1.21 , 40-386.12C

Page 1-4:

Item 1.6.1:

The configuration software RCP for REL301/302 is available at our web sitewww.abb.com/substationautomationselect: Transmission products, select REL301/302 and then configuration software.

Page 1-6:

1. REL301/2 is available with self polarised ground distance relay option, represented by a letter P in thethird position of the catalog number.

2. Some time earlier, an auto reclose catalog version with 120V phase to neutral synch input was added.The sixth digit of the catalog will be with the letter P for this model.

(Existing variations areN for no reclosing,R for autoreclose without synch check,S for reclosing + synchrocheck , 70V phase to neutralT for reclosing + synchrocheck , 120V phase to phase)

-18:

Item 2.10:

Apply voltages at the synch. input depending on whether 70V or 120V option is chosen as indicated bythe model numbers as above. Select the correct angle for T model since voltage of Phase-neutral on oneside is compared with phase-phase on the synch Input side. Also refer to the jumper settings in theREL301/302 manual, page 124 of IB 40-386.1F on selecting the reference phase.

ABB Automation, Inc.Substation Automation & Protection DivisionCoral Springs, FLAllentown, PA

Instruction Leaflet

Effective: March, 1998Supersedes IL 40-386.12Bdated February, 1997

REL 301 Non-PilotREL 302 PilotRelay System Version 1.21

40-386.12C

ABB Network Partner

ABB Note

Go to Table of Contents to easily access each individual section. Click on the ABB logo to return to the Section TOC page.

REL301/302 Reclosing Option(V 1.21)

I.L. 40-386.12

REL301/302 REVISION NOTICE

DATE REV LEVEL PAGES REMOVED PAGES INSERTED

7/94 A V1.102/97 B V1.203/98 C V1.21 Introduction page V

CHANGE SUMMARY:

A CHANGE BAR ( ) LOCATED IN THE MARGININDICATES A CHANGE TO THE TECHNICAL CONTENT

(*)

D

ENOTES

CHANGE

IN

DRAWING

SINCE

PREVIOUS

ISSUE

i

I.L. 40-386.12

It is recommended that the user of REL 301/302 equipment become acquainted with the information in this in-struction leaflet and in I.L. 40-386.1 before energizing the system. Failure to do so may result in injury to per-sonnel or damage to the equipment, and may affect the equipment warranty. If the REL 301/302 relay systemis mounted in a cabinet, the cabinet must be bolted to the floor, or otherwise secured before REL 301/302 in-stallation, to prevent the system from tipping over.

All integrated circuits used on the modules are sensitive to and can be damaged by the discharge of static elec-tricity. Electrostatic discharge precautions should be observed when handling modules or individualcomponents.

ABB does not assume liability arising out of the application or use of any product or circuit described herein.ABB reserves the right to make changes to any products herein to improve reliability, function or design. Spec-ifications and information herein are subject to change without notice. All possible contingencies which mayarise during installation, operation, or maintenance, and all details and variations of this equipment do not pur-port to be covered by these instructions. If further information is desired by purchaser regarding a particular in-stallation, operation or maintenance of equipment, the local ABB representative should be contacted.

Copyright © ASEA BROWN BOVERI, ABB Power T&D Company Inc. 1993, 1994, 1995, 1996, 1997

This document contains information that is protected by copyright. All rights are reserved. Reproduction, adaptation, ortranslation without prior written permission is prohibited, except as allowed under the copyright laws.

ABB does not convey any license under its patent rights nor the rights of others.

Trademarks

All terms mentioned in this book that are known to be trademarks or service marks are listed below. In addition,terms suspected of being trademarks or service marks have been appropriately capitalized. ABB Power T&DCompany Inc. cannot attest to the accuracy of this information. Use of a term in this book should not be regardedas affecting the validity of any trademark or service mark.

IBM and PC are registered trademarks of the International Business Machines CorporationWRELCOM is the registered trademark of the ABB Power T&D Company Inc.INCOM is the registered trademark of the Westinghouse Electric Corporation

! CAUTION

I.L. 40-386.12

PREFACE

Scope

This manual describes the functions and features of the REL 301(Non-pilot Relay System) and REL 302 (PilotRelay System) Reclosing/Synchronism check option. It is intended primarily for use by engineers and techni-cians involved in the installation, testing, operation and maintenance of the REL 301/302 Reclosing Option.

Equipment Identification

The REL 301/302 equipment is identified by the Catalog Number on the REL 301/302 chassis nameplate. TheCatalog Number can be decoded by using Catalog Number Table in Section 1.6 which is included for referenceonly.

Production Changes

When engineering and production changes are made to the REL 301/302 equipment, a revision notation(SUB #) is reflected on the appropriate schematic diagram, and associated parts information.

Equipment Repair

Repair work is done most satisfactorily at the factory. When returning equipment, contact your field sales rep-resentative for RMR authorization. All equipment should be returned in the original packing containers if possi-ble. Any damage due to improperly packed items will be charged to the customer.

Document Overview

Section 1 provides the Product Description. Section 2 presents the installation and test of the reclosing option.

Contents of Relay System

The REL 301/302 Relay System includes the style numbers, listed below, for each module.

Module Style Number

FT-10 Surge Protection 1502B35

Backplane Surge Protection 1612C53

Option (Reclosing/synch-check) 1614C19

Filter (Input Module) 1612C34

Microprocessor 1613C55

Display (Optional) 1613C69

Power Supply/Relay Outputs 1612C68

VT 1612C80

CT 1612C79

RS 232 Communication Interface 1614C94

ii

iii

I.L. 40-386.12

TABLE OF CONTENTS

Section Number Page Number

S

ECTION

1 P

RODUCT

D

ESCRIPTION

1.1 I

NTRODUCTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2 S

TANDARD

F

EATURES

FOR

R

ECLOSING

O

PTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21.3 O

PTIONAL

F

EATURES

FOR

R

ECLOSING

O

PTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.4 R

ECLOSE

/

SYNCHRONISM

C

HECK

S

OFTWARE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.5 S

ELF

-

CHECKING

S

OFTWARE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.6 U

NIQUE

R

EMOTE

C

OMMUNICATIONS

P

ROGRAM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.6.1 ABB B

ULLETIN

B

OARD

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.7 S

YNCHRONISM

C

HECK

O

PTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.7.1 A

PPLICATION

(120

VOLT

S

YNCHRONISM

I

NPUT

). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.8 REL 301/302 C

ATALOG

N

UMBERS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

S

ECTION

2 I

NSTALLATION

A

ND

T

ESTING

O

F

R

ECLOSING

/

SYNCH

C

HECK

O

PTION

2.1 I

NSTALLING

T

HE

R

ECLOSING

A

ND

S

YNCH

-

CHECK

O

PTION

. . . . . . . . . . . . . . . . . . . . . . 2-12.2 T

EST

P

LUGS

A

ND

FT S

WITCHES

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.3 E

XTERNAL

W

IRING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.4 R

ECLOSING

/S

YNC

-

CHECK

D

ESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.4.1 D

ISPLAY

M

ODULE

(MMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.4.2 L

ED

I

NDICATORS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.4.3 LED

S

AND

D

ISPLAY

R

ESET

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.5 F

RONT

PANEL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42.5.1 READY MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42.5.2 SETTINGS MODE (SET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42.5.3 TARGETS MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52.5.4 STATISTICS MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52.5.5 TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62.5.6 LOCKOUT MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72.5.7 DISABLING THE RECLOSER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72.6 RECLOSING/SYNC-CHECK OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72.7 TIMING DIAGRAM FOR A TYPICAL RECLOSING SYNC-CHECK SEQUENCE . . . . . . . . . . . 2-82.8 ACCEPTANCE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-132.9 DETAILED EVALUATION TESTS WITH BREAKER EMULATION . . . . . . . . . . . . . . . . . . . . 2-152.10 SYNCHRONISM/VOLTAGE CHECK OPTION ACCEPTANCE TEST . . . . . . . . . . . . . . . . . . 2-182.11 DETAILED EVALUATION TESTS SYNCHRONISM/VOLTAGE CHECK OPTION . . . . . . . . . . 2-192.12 FUNCTIONS DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

ABB Note

Click on the Section Title to access the desired section. To return to TOC, Click on the ABB logo on the first page of each section.

iv

I.L. 40-386.12

LIST OF FIGURES

Figure Number Page Number

FIGURE 1-1 REL 301/302 RECLOSE/SYNCHRONISM CHECK OPTION MODULE . . . . . . . . . . . . . . . . 1-1

FIGURE 2-1 REAR VIEW OF REL 301/302 WITH RECLOSER/SYNCH-CHECK OPTION INSTALLED . . . 2-3FIGURE 2-2 REL 301/302 SYSTEMS EXTERNAL CONNECTION (SHEET 1) . . . . . . . . . . . . . . . . . . . 2-26FIGURE 2-3 REL 301/302 SYSTEMS EXTERNAL CONNECTION (SHEET 2) . . . . . . . . . . . . . . . . . . . 2-27FIGURE 2-4 CONNECTION DIAGRAM FOR A-PHASE TO GROUND SYNC POTENTIAL . . . . . . . . . . . . 2-28FIGURE 2-5 CONNECTION DIAGRAM FOR PHASE TO PHASE SYNC POTENTIAL. . . . . . . . . . . . . . . . 2-29

I.L. 40-386.12

REL301/302 RECLOSING SOFTWARE VERSION 1.21

FEATURES ADDED AND IMPROVEMENTS MADE

TO RECLOSING SOFTWARE VERSION 1.20

1. Modified Manual Close logic to allow a manual close operation when either the DRIVE-TO-LOCKOUT orHOLD inputs are asserted.

2. Permission for a manual close operation requires the reclosing logic to be in either the READY or LOCK-OUT state. That is, a manual close operations cannot take place when the reclosing is in progress.

3. Corrected logic error which caused the voltage check timer to count down continuously following a reclosedead time initiated by “Recl n Init setting of “52b and 3RI”. Since the voltage check timer continued to countdown, the reclosing logic would not issue a close output. This problem was limited to reclose sequence withthe aforementioned settings and only when the 52b input was followed by the 3RI signal (internal from theprotection or external).

v

I.L. 40-386.12

REL301/302 RECLOSING SOFTWARE VERSION 1.20



1. Improved the application flexibility by Adding a setting of “Sync Volt” with a selection of “Line/Bus” to cor-rectly indicate the connection of synchronism input voltage on line or bus side. Previously the ‘bus’ referencewas fixed as the protection source and ‘line’ reference was fixed as the synchronism source. This improve-ment causes LED indication, metering and targeting of ‘line’ and ‘bus’ to accurately reflect the connection(e.g. HLDB, HBDL).

2. Additional functionality was added to the 52a input. To accommodate both existing logic and the new man-ual close logic, the setting for the input 52a was changed from “52a?” to “52a/Mancls”. “52a/Mancls” has thefollowing setting options:

a) “Yes, 52a” for the 52b NOT 52a (pole disagreement) logic application. Previously, the setting for this logicwas “52a? = Yes”.

b) “Man Close” configures 52a input for use with manual close logic.

c) “No, Disabled” 52a input is not used by the reclosing logic functions.

3. Added a manual close function with the following settings. Manual close allows the operation of the REL301/302 close contacts by energizing the 52a input. Manual close is available with the basic reclosing func-tion and is enhanced when used with the optional voltage/synchronism check logic. The voltage/synchro-nism check settings will be displayed only when the manual close function is enabled (“Man Close” = “Yes”)and the optional voltage/synchronism check logic is present:

a) “Man Close” = “Yes/No” - Enable/disable manual close function

b) “Man HLDB” = “Yes/No” - Manual close with Hot Line Dead Bus voltage check.

b) “Man HBDL” = “Yes/No” - Manual close with Hot Bus Dead Line voltage check.

c) “Man SYNC” = “Yes/No” - Manual close with synchronism check.

d) “Max Wait” = “0-990 sec” or “No Time Limit”. Maximum time allowed to wait for voltage check and/orsync check before reclosing logic goes to lockout state. If No Time Limit is chosen thenlogic waits indefinitely for voltage or sync check.

4. Corrected metering and targeting error for 120 volt synchronism input voltage option. Previously, when us-ing the 120 volt version of the reclosing logic, the voltage would be displayed as 70 volts instead of the cor-rect value of 120 volts. In Version 1.20, of the firmware, the correct voltage value is displayed and targeted.As stated in paragraph 1 above, this also allows the user to set the synchronism voltage reference for eitherline side or bus side, maintain the reference (protection) voltage at 70 Vrms and display the correct voltagelevel from the 120 volt synchronism voltage input.

5. Corrected the setting range of “Live” voltage from 30-70 Vrms to 50-120 Vrms and the “Dead” voltage from0-30 Vrms to 0-50 Vrms for the 120 volt synchronism check option. Previously the voltage ranges were dis-played as the 70 volt ranges even when the 120 volt synchronism check option had been supplied.

vi

I.L. 40-386.12

REL301 AND REL302 RECLOSING SOFTWARE VERSION 1.10



1. Disabled contact test if recloser is in “remote only” settings mode or if recloser is disabled by setting choice.

2. Added capability to test front panel reclosing LEDs and output contacts, via the Man-Machine Interface or communications ports.

3. Added time stamping of reclosing targets. Time stamp data is only available through one of the communi-cation ports.

4. Improved reclosing module communications by replacing “Recloser OFF” text with “Recloser Disabled” when reclosure is disabled by setting choice.

5. Improved recloser flexibility by changing action taken by logic when maximum number of reclosures set-ting (Cum.Recl) is reached. Now, instead of the recloser locking out the alarm (AL1) is set.

6. Improved function of RECLOSING IN SERVICE LED to reflect loss of dc, reclosing module failure, reclos-ing being disabled by setting choice, and/or Man Machine Interface not in “Ready” or “Lockout” mode.

7. Improved recloser flexibility by adding programming capability to the In-Progress and Failed-Close con-tacts. Now these contacts can be used to reflect various sync-check status output.

8. Added security for setting changes by preventing the disabling of local setting function from a communica-tion port when front display is in value change mode.

vii

1

ABB Power T&D Company Inc.

PRODUCT DESCRIPTION

Section 1

1.1 Product Description

1.2 Reclosing Option Features

1.3 Reclose/synchronism Check Software

1.4 Self-Checking Software

1.5 Unique Remote Communication Program

1.6 REL 301/302 Catalog Numbers

2

INSTALLATION

Section 2

2.1 Installing the Recloser/Sync-Check Option

2.2 Test Plugs and FT Switches

2.3 External Wiring

2.4 Recloser/Synch-Check Description

2.5 Front Panel Operation

2.6 Recloser/Synch-Check Operation

2.7 Timing Diagram for a Typical Reclosing

2.8 Acceptance Tests

2.9 Functions Description

Sync-Check Sequence

ABB Power T&D Company Inc.

I.L. 40-386.12

1-1

1

Section 1. PRODUCT DESCRIPTION

1.1 INTRODUCTION

The Reclosing Option Module (

Figure 1-1

) is a numerical reclosing system, which can be pro-grammed for up to four shots of reclosing. All inputs are monitored and outputs controlled by amicroprocessor which is independent of the REL 301/302 protection processor. Self-checking,Reclosing and Synchronism checks are included. The reclosing option is recommended fortransmission or subtransmission reclosing applications.

Figure 1-1. REL 301-302 Reclose/ synchronism check Option Module

I.L. 40-386.12

1-2

1

1. 2.

Standard

Features for Reclosing Option

• Multi-Shot Reclosing with up to four reclosures.

• Reclosure dead Time:0.01- 250 seconds.

• Selectable signal to initiate a reclosure:52b onlyRI only (internal from protection or external contact input)52b or RI (internal from protection or external contact input)52b and RI (internal from protection or external contact input)

• External reclose initiate input (EXT RI) to allow operation of reclosing function independentof protection function

• Drive to lockout (DR LOCK) input for manual trips and breaker failure or bus lockout relayinput.

• Hold input (HOLD) to freeze reclose cycle at point input applied. Cycle resumes when inputremoved.

• Manual close input (user selectable use of 52a input) for initiating close either directly orthrough optional Voltage/Synchronism check logic.

• Two electrically separate close contacts (CLOSE-1, 2) for breaker closing

• Contact closure duration:0.01 - 2 seconds.

• Failed Reclose function Failed Reclose time: 1 - 250 seconds.

• Max cycle function Max cycle time: 1 - 990 seconds.

• Follow breaker function.

• Breaker operation and maintenance control:Programmable maximum reclosures per selected time period, reset duration and recov-ery time.Settable maximum reclosures before alarm

• Reclosing event record:Reclosure number, result, time and synchronism information are recorded as target.

Two most recent reclosing sequences target data are available through front panel LCDdisplay. Sixteen recent targets are available with remote communication.

• Statistic data for reclosures and LOCKOUTs.

• Test function for output contacts, LEDs and inputs.

• Real time clock to time stamp reclosing events and current time.

• Alarms for:Relay FailureReclosure Failure

I.L. 40-386.12

1-3

1

Reclosure LOCKOUTReclosing in progress

• Capability to disable Reclosing and Synchronism function from front panel setting.

1. 3.

Optional

Features for Reclosing Option

• Selectable voltage check and synchronism check

Hot Line Dead Bus (HLDB) or Hot Bus Dead Line (HBDL) voltage supervision selection foreach reclosure and Manual Close.

Selectable live and dead voltage levels,Synchronism angle and synchronism time

Wait time:0 - 990 seconds or infinite.

Synchronism condition time:0.01 - 20 seconds.

Switched synchronism settings allow HLDB,HBDL and /or SYNC within any reclose se-quence and Manual Close.

• 120 Volt phase to phase synchronism source input

1.4 RECLOSE/SYNCHRONISM CHECKSOFTWARE

The reclose/synchronism check software includes the following functions:

a. All the reclose and synchronism check functions.b. All the MMI functions.c. Selectable output function.d. Reclosing event recording.e. Test functions

1.5 SELF-CHECKING SOFTWARE

Self-checking software includes the following functions:

a. Program Memory Check SumImmediately upon power-up, the relay does a complete EPROM checksum of programmemory. Afterwards, the Reclosing Relay continually verifies the program memory check-sum.

b. Power Up RAM Check:Immediately upon power-up, the relay does a complete test of the RAM data memory.

c. EEPROM Check:Settings are stored in EEPROM in three identical arrays. These arrays are continuouslychecked by the program. If any of the three array entrees disagree, a EEPROM failure isdetected.

1. 6. Unique Remote Communications Program(RCP)

Special remote communications software, RCP is provided for obtaining fault, metering and cur-rent settings data as well as sending data to the REL301/302. RCP can best be described as a

I.L. 40-386.12

1-4

1

user friendly way of using a personal computer (PC) to communicate with ABB protective relaysby way of pull-downs menus. By coupling a computer with the appropriate communicationshardware, it is possible to perform all relay setting and data interactions that are possible fromthe man-machine interface. RCP is

required

to communicate with the REL301/302 via the com-munication port(s). Refer to RCP instruction manual, I.L. 40-603, for detailed information.

1.6.1 ABB Bulletin Board

The ABB Relay Division Bulletin Board (BBS) is now on line. To obtain the latest version of RCPsoftware, please call the ABB BBS via modem at:

(800) 338-0581 or (954) 755-3250

Using configuration settings 300-14,400 bits/second, 8 data bits, 1 stop bit, no parity and full du-plex. Once the connection is established and login is completed, choose L - Library of Files fromthe TOP menu. Next, select D - Down Load File, from the Library of Files, RCPxxx.EXE (wherexxx is the most recent version number e.g. 180 for version 1.80). RCPxxx.EXE is a compressed,self extracting file which is expanded and installed by simply typing RCPxxx and following theinstructions. RCP Version 1.82 re-quired to interact with Reclosing firm-ware Version 1.20.

1.7 Synchronism Check Option

REL 301/302 reclosing option can besupplied with internal synchronismcheck and voltage check, Hot BusDead Line (HBDL) or Hot Line DeadBus (HLDB), logic. For relays suppliedwith internal synchronism checkinglogic, supervision of REL 301/302 re-closing is settable for synchronismand/or HBDL and/or HLDB for eachreclosing attempt.

REL 301/302 reclosing option syn-chronism checking logic utilizes a“windshield wiper” characteristic (seeFigure 1-2). This is, a combination ofsynchronism voltage, magnitude mea-surement and voltage angle differencemeasurement. Both magnitude andangle difference measurement must be within the user’s set range to produce synchronismcheck permission of reclosing.

1.7.1 Application (120 volt Synchronism Input)

The REL 301/302 has an option to accept a phase to phase voltage input for the “Line” Voltageinput. The “Line” Voltage inputs

VS

(

FT-10

, polarity) and

VSR

(

FT-9

, non-polarity), with this op-tion, is from a phase to phase connected potential device with a 120 volt secondary voltage rep-resentation of the primary phase to phase voltage. The “Bus” voltage reference is from the relayprotection, voltages

V

A

, V

B

or V

C

,

(

FT-1, FT-2,

and

FT-3

respectively) and is selected bychoosing the appropriate reference with jumper P12 on the Filter module. (See I. L.40-386.1 Fig-

Sync-Angle

WINDSHIELD WIPER CHARACTERISTIC

VMAX

VLine VBus

Figure 1-2

HOT

DEADVMIN

I.L. 40-386.12

1-5

1

ure 5-1 for jumper location). The appropriate reference is chosen by observing the polaritymarks of the Line potential device and selecting the “polarity mark” voltage with jumper P12.That is, if the Line voltage is

V

AB

, set jumper P12 for the

V

a

position. Selection of the Bus voltagereference described assumes phase rotation ABC. If the phase rotation is ACB, the Bus voltagereference would be

V

b

. Synchronism voltage input reference to “Line” voltage and “Bus” voltagecan changed using the Synch Volt setting. For example, if the Synchronism Voltage input is fromwhat would be referred to as the “Bus”, the Synch Volt setting could be changed for correct LED,LCD and targeting displays

The 120 volt, phase to phase synchronism voltage option (i. e. REL 301/302 style number, digit6 is a T) corrects for the 30

o

phase shift difference between line to neutral protection voltage in-put and line to line synchronism voltage input. Components have been added to hardwire thephase shift compensation. Hence when viewing the

“Bus-Line Angle”

on the Man-MachineInterface (MMI) display, synchronism is represented by 0

o

angular difference between Bus andLine voltages, not -30

o

.

If voltage checking (

HBDL

or

HLDB

) is to used, either independently or with synchronismchecking, the setting of voltage threshold

“V Max”

is with reference to a 50-120 volts scale. Inother words if

“V Max”

(Live voltage) is desired to be 100 volts, set

“V Max”

to

“100 Volts”

. Thesame is true for

“V Min” with a range

0-50 volts.

All other settings for operation of REL 301/302 reclosing are the same as the 70 Volt Synchro-nism voltage relay.

I.L. 40-386.12

1-6

1

MOUNTING

Horizontal - - - - - - - - - - - - - - - - - - - - - - - - - - HVertical - - - - - - - - - - - - - - - - - - - - - - - - - - - - V

TRIP

3-Pole Trip - - - - - - - - - - - - - - - - - - - - - - - - - - 3

CURRENT

1 A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A5 A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - B

BATTERY VOLTAGE

48 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4125 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - 1250 Vdc - - - - - - - - - - - - - - - - - - - - - - - - - - - 2

RECLOSING

Multi-shot Reclosing - - - - - - - - - - - - - - - - - - - - - RMulti-shot Reclosing w/sync-check 70V* - - - - - - - - - - - SMulti-shot Reclosing w/sync-check 120V** - - - - - - - - - - TNone - - - - - - - - - - - - - - - - - - - - - - - - - - - - - N

PILOT SYSTEM

Pilot (REL302) - - - - - - - - - - - - - - - - - - - - - - - - PNon-Pilot (REL301) - - - - - - - - - - - - - - - - - - - - - - N

PROGRAMMABLE CONTACT OUTPUTS

5 Contacts including one trip rated contact - - - - - - - - - - 5None - - - - - - - - - - - - - - - - - - - - - - - - - - - - - N

COMMUNICATIONS PORT

Flexible (PONI-Rear mounted)NET - - - - - - - - - - - - - - - - - - - - - - - - - - - - - CRS-232C (Default) - - - - - - - - - - - - - - - - - - - - - - RRS-232C with IRIG-B Input - - - - - - - - - - - - - - - - - - B

FRONT PANEL INTERFACE

LCD Display - - - - - - - - - - - - - - - - - - - - - - - - - LRS-232C PONI - - - - - - - - - - - - - - - - - - - - - - - - RBoth - - - - - - - - - - - - - - - - - - - - - - - - - - - - - BNone - - - - - - - - - - - - - - - - - - - - - - - - - - - - - N

FT Test plug style # 13B8453G05

1.8 REL 301/302 Catalog Numbers (For Reference Only)

M V BC5NR1B3

I.L. 40-386.12

2-1

2

2. 1 INSTALLING THE RECLOSER/SYNC-CHECK OPTION

It is recommended that the user of this equipment becomes acquainted with the information inthese instructions and in I.L. 40-386.1 before energizing the REL 301/302 and associated as-semblies. Failure to observe this precaution may result in damage to the equipment.

All integrated circuits used on the modules are sensitive to and can be damaged by the dis-charge of static electricity. Electrostatic discharge precautions should be observed when oper-ating or testing the REL 301/302.

Use the following procedure when separating the inner chassis from theouter chassis; failure to observe this precaution can cause personal injury,undesired tripping of outputs and component damage.

If the REL 301 or REL 302 was supplied with the Recloser/Sync-Check Option proceed to Sec-tion 2.2.

a. Unscrew (counter clockwise rotation) the front cover knob and remove cover.

b. Open all FT switches.

DO NOT TOUCH THE OUTER CONTACTS OF ANY FT-10 SWITCH; THEY MAYBE ENERGIZED.

c. Release frame latches by pushing the top and bottom (left and right ends for horizontalmount relay) latches inward towards the center of the relay.

d. Push the center latch on the side of the relay towards the middle of the frame to release theinner chassis.

e. Slide out the inner chassis.

f. Mount the Recloser/Synch-check Module in the middle connector on the rear of the micro-processor module and snap the mounting posts into the appropriate holes on the PowerSupply module. (

See Figure 2-3

)

g. Reverse procedures a-e above when replacing the inner chassis into the outer chassis.

2. 2 TEST PLUGS AND FT SWITCHES

Test Plugs are available as accessories. They are inserted into the FT-10 switches for the pur-pose of System Function Tests. See Section 1.6 for ordering information.

2. 3 EXTERNAL WIRING

All electrical inputs/outputs are made through the back of the REL 301/302.

Figures 2-2

through

2-6

and

Table 2-1

illustrate the location of various input/output signals. Additional

Figures 2-4

and

2-5

show alternative connections for the synchronism voltage input. The vertical REL 301/

! CAUTION

! WARNING

Section 2. INSTALLATION and OPERATION

I.L. 40-386.12

2-2

2

302 isused as a reference in the Connection Specification Chart (similar for the horizontal REL301/302).

2. 4 RECLOSER/SYNCH-CHECK DESCRIPTION

2.4.1 Display Module (MMI)

The reclosing function shares the front panel display and push-buttons with the protection dis-play functions. The selection between protection (PROTECT) display and reclosing/synch-check (RECLOSE) display is made by operating the white switch at the bottom right of the LCDdisplay to the desired function.

2.4.2 LED Indicators

Yellow LEDs in the center of the relay front panel are dedicated to indication of the recloser andsynch-check functions. See

Table 2-2

for descripton of LED indicators.

2.4.3 LEDs and Display Reset

The push-button labelled RESET is used to reset all the LEDs and switch the display to“READY” state, or LOCKOUT”

state if reclosing is LOCKED OUT. (Display white switch mustbe on “Recloser”.)

TABLE 2-1

CONNECTION SPECIFICATION CHART FOR RECLOSER/SYNC-CHECK OPTION

INPUT/OUTPUTS LOCATION

SIGNAL INPUTSReclosing/Synch-check Connection (Add Following Connections)

HOLD 2 Terminals on Terminal Strip TB5EXT RI 2 Terminals on Terminal Strip TB5DR LOCK 2 Terminals on Terminal Strip TB4

LINE VOLTAGE (Vs, Vsr) FT-9 and FT-10BUS VOLTAGE (Va, Vb, or Vc) Voltage reference selectable by jumper P12 FT-1 thru FT-4

located on Filter Module (see I.L. 40-386.1 Figure 5-1)

CONTACT OUTPUTSReclosing/Synch-check Connection (Add Following Connections)

CLOSE - 1 2 Terminals on Terminal Strip TB2CLOSE - 2 2 Terminals on Terminal Strip TB2LOCKOUT 2 Terminals on Terminal Strip TB5RECL_FAIL/OUT-2 2 Terminals on Terminal Strip TB5IN PROGRESS/OUT-1 2 Terminals on Terminal Strip TB5

COMMUNICATION CONNECTIONThe NET or RS232 Product Operated Network Interface (PONI) Communication module is mounted on the inside of the case to thebackplane module. For detailed information concerning communications port use cable connections see I.L. 40_386.1 Section 4.6).

I.L. 40-386.12

2-3

2

Figure 2-1 Rear view of REL 301/302 with Recloser/Synch-check option installed.

I.L. 40-386.12

2-4

2

TABLE 2-2FRONT PANEL RECLOSING AND SYNCH-CHECK LED INDICATOR CHART

RECLOSING IN SERVICE ON when dc power is on, recloser is passing self-check test and re-

closing is enabled by setting choice

LOCKOUt ON when reclosing logic is in the lockout state. LOCKOUT output

contact is also operated.

FAILED RECLOSE ON after a failed reclose. Can be cleared by depressing “RESET”push-button or via remote “EXTERNAL RESET”. FAIL RECL/

OUT 2 is also operated.

SYNCHRONISM (*) ON when Bus & Line voltages are in Synchronism.

HBDL (*) ON when Bus is Live and Line is Dead.

HLDB (*) ON when Line is Live and Bus is Dead.

(*)

The 3 lower LEDs are present only with the Synch-check Option. They are operational when the “SYNC SET” setting has been enabled.

2. 5 RECLOSING OPTION FRONT PANEL OPERATION

The front panel display is divided into three fields: Function, Value, and Mode.

The seven modes of operation, are shown at the top right of the display and are explained in

Table

2-3

. The 4 push-buttons labeled SELECT, LOWER, RAISE, and ENTER, are used to in-terface with the REL 301/302 mode display selection, scrolling within a selected mode and ac-cepting relay settings.

The display default mode is automatically returned to when no push-button has been depressedfor 2 minutes. The display default mode is defined in

Table 2-3.

By keeping the SELECT push-button depressed, the list of modes is scrolled in the sequenceshown in

Table 2-3

, at approximately a one second rate. For each selected mode, the corre-sponding functions can be scrolled through with the LOWER and RAISE push-buttons (exceptfor default mode).

2.5.1 Ready Mode

Under normal conditions, the relay is in “READY” state, ready to start a reclosing sequence assoon as the reclosure 1 (Recl 1) initiation condition is detected. See

Table 2-5.

When a reclosing cycle starts, the recloser goes through the selected logic until either back to“READY” state, in case of successful reclosing, or to LOCKOUT” state, if for any reason, no fur-ther reclosing can be attempted.

2.5.2 Settings Mode (SET)

Change the mode to SET using the SELECT push-button.

Table

2-6

lists all

available settingswith their associated ranges which can be scrolled through forwards and backwards using theLOWER and RAISE push-buttons. The current setting appears on the upper left of the display,

Function Value

Mode

I.L. 40-386.12

2-5

2

and the current setting value on thesecond line.

The current setting value can bechanged by pressing the ENTERpush-button once. An underscoredash will then blink alternatively be-tween the first and last characters onthe second line. At this point, other

values for the same setting can bescrolled through by depressing theLOWER or RAISE push-button. Whenthe desired value is reached, select itby pressing ENTER until VALUE UP-DATED! shows on the display. Afterthe value is updated the system thenreturns to the function SET mode.

Reclosures 4 recl

SET

Reclosures SET

— 4 recl —

In order to restore the original value while in the middle of the scrolling values, press SELECTinstead of ENTER, the system returns to the SET mode, without updating the setting. In the SETmode, a jump to the next mode is performed by pressing SELECT.

Scrolling proceeds at a faster rate after having continuously held down either button for about 3seconds. At the end of a setting session, return to READY mode by pushing the SELECT push-button until the READY appears on the display.

The settings relating to synch-check are listed and described at the end of each of the four re-closure group settings. It is advised to adjust all settings in the order given in the list (i.e. usingthe RAISE push-button to move to the next setting) since some settings might not be displayedas the result of another setting choice. For example, selecting 2 reclosures disables the displayof settings for reclosures 3 and 4. Likewise, when a function works in conjunction with a timer,disabling the function “hides” the timer setting.

2.5.3 Targets Mode TR

Change the mode to TR using the SELECT push-button. The relay saves the reclosing eventsthat have taken place during the last two reclosing sequences for front display purpose.

The last reclosing sequence is referred to as “Last Sequ”, and the previous one as “Prev Sequ”in the function field of the display. The last 16 targets are recorded and can be checked remotelyvia a RS232 or NET PONI interface.

MODE DESCRIPTION AS DISPLAYED

READY System ready to start a reclosing READYsequence. The reclosing logic must Recloser V1.xxbe in this mode in order to operate.When in the READY state, the

display default mode is the READY mode.

SETTINGS Check and/or change settings. SET

TARGETS Lists the data related to the two TR

last reclosing cycles.

STATISTIC List the status of the different MEM

counters.

TEST Shows selftest status and allows TESTthe testing of output contacts and

LEDs.

LOCKOUT Displays the reason for being in LOCKOUTLOCKOUT state. When in the Reason for LOCKOUT state, the default mode LOCKOUT

is the LOCKOUT mode.

DISABLED recloser disabled from “Recloser” Recl. Disabledsetting. When in the disabled state, Check Settingthe default mode is the disabled mode.

TABLE 2-3

I.L. 40-386.12

2-6

2

For each event, the value field displays the associated number with the corresponding event.The list of the possible messages or causes for successful and unsuccessful reclosures isshown in the table below.

To scroll through the list of targets, depress the RAISE or LOWER push-buttons.

With the Synch-check option, each target is accompanied with the line and bus voltages, andthe angle between them at the time the target was recorded (at reclosing in case of a closure),or at the time the reclosure was skipped for the given reason.

2.5.4 Statistics Mode MEM

Change the mode to MEM using the SELECT push-button. The following statistical informationcan be scrolled through using the RAISE and LOWER push-buttons.

• 1st reclosures

• 2nd reclosures

• 3rd reclosures

• 4th reclosures

• Reclosures left

(to alarm if enabled)

• Lockout

NOTE: In order to reset the above counters, select the [MEM] mode and press to-gether the LOWER and ENTER push-buttons until the text “Reset Counters”appears on the display.

2.5.5 Test Mode TEST

Change the mode to TEST using the SELECT push-button. The test display provides diagnos-tic, LED and output contact testing capabilities for the REL 301/302 recloser module.

Output Contacts and LED tests

Scroll through the functions in the TEST mode using the RAISE or LOWER push-buttons untilthe output contact to be tested appears in the function field of the display (top left). The contact(and the corresponding LED in the case of the lockout/out 1 and fail reclose/out 2 contacts) areoperated by pressing the ENTER push-button. They remain active as long as ENTER is de-pressed. The text “TESTING” appears simultaneously on the second line of the display.

When the synchronism/voltage check option is supplied, the 3 synchronism/voltage check LEDscan be checked, by depressing the ENTER push-button when “LEDs” is displayed in the func-tion field of the display and “Recloser” is displayed in the value field. When ENTER is depressedal of the reclosing option LEDs light in top to bottom sequence.

Target Event As displayed

Close CloseFollow Breaker Follow BrReclose Block Input Recl BlockNo HLDB, No HBDL orNo Synch-check No Sync

Table 2-4

I.L. 40-386.12

2-7

2

NOTE: Contact testing is disabled if recloser setting “Remote Set = Yes” or if reclos-er is disabled by setting choice.

Self-Check status

A self-check of the main components on the module is continuously performed by the micropro-cessor. The result is represented by a HEX value in the value field of the “Status” function. Referto I.L. 40-386.1, Section 4.4.2.1, paragraph d

Test Mode

for

detailed status explanation.

2.5.6 Lockout Mode

The relay goes to “LOCKOUT” for any of the following reasons:

• Drive to lockout input energized

• Failed to close before the fail reclose max duration timer (when selected) expired

• Maximum cycle time reached (when selected)

• Agreement between 52a and 52b signals (when “52a/Mancls” is set to “Yes, 52a”)

• Wait timer expired without satisfying selected SYNC/HBDL/HLDB condition

2.5.7 Disabling The Recloser

The recloser can be enabled or disabled through the “Setting” mode. When the recloser is setto “Disabled”, the recloser goes to the “Disabled” state and the display shows the text “RecloserDisabled, Check Setting”; the Recloser In service LED will also go out.

Settings, Targets, Statistics and Test modes can still be accessed when the recloser is disabled.To re-enable the recloser, set the “Recloser” back to “Enabled”. The recloser returns then to“Ready” mode after resetting from LOCKOUT. The Recloser In Service LED will light when therecloser is “ready”.

2. 6 RECLOSER/SYNC-CHECK OPERATION

Upon power-up, the recloser performs self-diagnostics routines. Detection of a continuing prob-lem will cause the alarm relay ALARM 1 to drop out, and the recloser will be locked out. If noproblem was encountered, the recloser goes to READY state.

In the READY state, the recloser continuously monitors the input(s) selected to initiate the firstreclosure. The initiation setting can be the following:

Table 2-5:

As Displayed Initiation Condition

52b only Looks only at 52b to initiate a new reclo-sure.

3RI only Looks only at 3RI to initiate a new reclo-sure.

Internal 3RI or External RI.

52b and 3RI Both signals 52b and 3RI must bepresent within one second or less to ini-tiate a new reclosure. Internal 3RI orExternal RI.

52b or 3RI Either signals will initiate a new reclo-sure.Internal 3RI or External RI

I.L. 40-386.12

2-8

2

When a reclosing sequence is initiated for any of the above conditions, the recloser goesthrough different stages; Recloser dead time countdown, waiting for synchronism/HBDL/HLDB(if selected with the sync-check option), closing of contacts and reset. If in the reset phase thecondition to initiate the next reclosure appears, the recloser proceeds to the next reclosure. Oth-erwise, at the end of the reset time, the recloser returns to READY state, which marks the endof the sequence.

The sequence can also end in the LOCKOUT state for any of the reasons explained in Section2.5.6 (Lockout Mode).

During the reclosing sequence, the different stages are displayed with the corresponding count-downs and set timers.

2. 7 TIMING DIAGRAM FOR A TYPICAL RECLOSING SYNC-CHECK SEQUENCE

Timing Diagram showing a typical Reclosing/Sync-check sequence according to the followingenabled settings and conditions.

NOTE: In the example below, 2 reclosures were selected: Reclosure 1 (Recl 1) was initiated by3RI only. Reclosure 2 (Recl 2) was initiated by 52b only with HLDB condition enabled anda Recl 2 Wait Time set indefinitely, i.e., “No Time Limit”.

Relevant Settings for this example:

Sync Set ? Yes Recl 2 52b Only

Sync Time 2.0 Sec Recl2 HLDB Yes

Recl 1 3RI Only Recl2 HBDL No

Recl1 HLDB No Recl2 Sync No

Recl1 HBDL No Recl2 Wait No Time Limit

Recl1 Sync No

3RI

52b

Close

HLDB

Sync Time

Recl 1

Reset

Recl 2

Wait Time

Reset ReadyReady

Trip

Relay

I.L. 40-386.12

2-9

2

Table 2-6: RECLOSING SETTINGS WITH RANGES (Sheet 1 of 4)

SettingFunction Display

RCPDisplay

Value Displayed

FactoryDefault

* Synchronism Functions Enable

Sync Set ? Sync Set

No / Yes

No

* “LIVE” Voltage Threshold

V Max V Max

30 -70 Step 1 Volt50-120 Step 1 Volt (120 Volt option)

53 Volts90 Volts

* “Dead” Voltage Threshold

V Min V Min

0 -30 Step 1 Volt0 - 50 Step 1 Volt (120 Volt option)

13 Volts22 Volts

* Maximum Angle for Synchro-nism

Sync Angle Sync Ang

0 - 60 Step 1

o

(degrees)

20

o

Synchronism Voltage Reference

Sync Volt Sync Volt

Line Side/Bus Side

Line Side

* Present Synchro / HLDB /HBDLMinimal Condition Duration

Sync Time Sync Time

0.01 - 0.99 Step 0.01 sec1.0 - 9.9 Step 0.1 sec10 - 20 Step 1 sec

2.0 sec

Number of Reclosure

Reclosures # Reclose

0 - 4 recl

4 recl

Reclosure 1 parameters:

- Reclose 1 Initiation Method

Recl 1(RECI 1)Recl n Init

52b only /3RI only /52b and 3RI /52b or 3RI

52b Only

- Reclose Block(“Recl1” must be set to one ofthe setting choices that includes3RI to view this setting)

Recl1 RB Recl n RB

No / Yes

No

- Reclose 1 Dead Time

Recl1 Time Recl n Time

0.01 - 0.99 Step 0.01 sec1.0 - 9.9 Step 0.1 sec10 - 250 Step 1 sec

0.50 sec

* - Reclose 1 on HLDB

Recl1 HLDB Recl n HLDB

No / Yes No

* - Reclose 1 on HBDL Recl1 HBDL Recl n HBDL No / Yes No

* - Reclose 1 on Synchronism Recl1 Sync Recl n Sync No / Yes No

* - 1 Max Wait Time for a HBDL, HLDB or Synchronism condition.(Recl1 HLDB, HBDL or Sync must be “yes” to view this set-ting)

Recl1 Wait Recl n Wait 0 - 99 Step 1 sec100 - 990 Step 10 secNo time Limit (Infinite Wait Time)

60 sec

Reclosure 2 parameters:- Reclosure 2 Initiation Method Recl 2

(RECI 2)Recl n Init 52b only /

3RI only /52b and 3RI /52b or 3RI

52b Only

- Reclose 2 Block(“Recl2” must be set to one ofthe setting choices that includes3RI to view this setting)

Recl2 RB Recl n RB No / Yes No

* Settings available only with synchronism check option and when Sync Set? = Yes

I.L. 40-386.12

2-10

2

- Reclose 2 Dead Time Recl2 Time Recl n Time 0.01 - 0.99 Step 0.01 sec1.0 - 99 Step 0.1 sec10 - 250 Step 1 sec

3.0 sec

* - Reclose 2 on HLDB Recl2 HLDB Recl n HLDB No / Yes No



* - 2 Max Wait Time for a HLDB, HBDL or Synchronism condition.(Recl2 HLDB, HBDL or Sync must be “yes” to view this set-ting)

Recl2 Wait Recl n Wait 0 - 99 Step 1 sec100 - 990 Step 10 sec No time Limit (Infinite Time)

60 sec




52b Only



- Reclose Dead Time Recl3 Time Recl n Time 0.01 - 0.99 Step 0.01 sec1.0 - 9.9 Step 0.1 sec10 - 250 Step 1 sec

10 sec





Recl3 Wait Recl n Wait 0 - 99 Step 1 sec100 - 990 Step 10 secNo time Limit (Infinite Time)

60 sec




52b Only



- Reclose 4 Dead Time Recl4 Time Recl n Time 0.01 - 0.99 Step 0.01 sec1.0 - 9.9 Step 0.1 sec10 - 250 Step 1 sec

30 sec




RCPDisplay

Value Displayed

FactoryDefault


I.L. 40-386.12

2-11

2


* - Reclose4 on Synchronism Recl4 Sync Recl n Sync No / Yes No


Recl4 Wait Recl n Wait 0 - 99 Step 1 sec100 - 990 Step 10 secNo time Limit (Infinite Time)

60 sec

Fail Reclose Enable FailRecl ? Fail Recl No / Yes Yes

Fail Reclose Max Close Duration

(Not displayed if Fail Recl? = No)

Fail Time Fail Time 1 - 99 Step 1 sec100 - 250 Step 10 sec

10 sec

Close Contact Duration

(Not displayed if Fail Recl? =Yes)

ClosePulse ClosePulse 0.01 - 0.99 Step 1 sec1.0 - 2.0 Step 0.1 sec

0.50 sec

Reset Duration Reset Time Reset 1 - 99 Step 1 sec100 - 250 Step 10 sec

15 sec

Check Hold Input Hold ? Hold No / Yes No

Maximum Cycle Enable

“Sync Set” must be “No” to viewthis setting

MaxCycle ? MaxCycle No / Yes No

Maximum Cycle Time

“Max Cycle” must be “Yes” toview this setting

Max Time Max Time 1 - 99 Step 1 sec100 - 990 Step 10 sec

990 sec

Enable FollowBr ? Follow Bkr No / Yes No

Use of 52aInput 52a/Mancls 52a/ManCls 52a, Yes/Manual Close/No, Dis-abled

No, Disabled

Number of Reclosures to AlarmEnable

Cum. Recl? Cum. Recl No / Yes No

Number of Reclosures to Alarm(Cum. Recl must Yes to view thissetting)

Cum. Recl #Cum. Recl 0 - 99 Step 1 100 - 990 Step 10

990 recl

Breaker Limit Operations:- Breaker Operation Enable Br Oper. ? Bkr Oper No / Yes No

- Breaker Limit Number Max Count Limit Count 0 - 99 Step 1100 - 250 Step 10

250 recl

- Breaker Limit Duration Duration Duration 1 - 99 Step 1 min100 - 250 Step 10 min

250 min

-Breaker Recovery Time

“Br Oper.?” must be “Yes” toview these settings

Recovery Recovery 1 - 99 Step 1 min100 - 250 Step 10 min

1 min



RCPDisplay

Value Displayed

FactoryDefault


I.L. 40-386.12

2-12

2

Output Contact 1 Configuration Output 1 Out_1 NoneIn-ProgressHLDBHBDLHLDB/HBDLSYNCHLDB/HBDL/SYNC

In-Progress

Output Contact 2 Configuration Output 2 Out_2 NoneFailed CloseHLDBHBDLHLDB/HBDLSYNCHLDB/HBDL/SYNC

Failed Close

Remote Setting Change Enable Remote Set Remote Set No / Yes Yes

*

*

*

*

Manual Close (settings belowavailable when Man Close set toYes)

- Manual Close on HLDB

- Manual Close on HBDL

- Manual Close if Synchronism

- Manual Max Wait Time for a HLDB, HBDL or Synchronism Condition(Man HLDB, HBDL or Sync must be “yes” to view this setting)

Man Close

Man HLDB

Man HBDL

Man SYNC

Man Wait

Man Close

Man HLDB

Man HBDL

Man SYNC

Man Wait

No / Yes

No / Yes

No / Yes

No / Yes

0-99 in 1 Second steps

100-990 in 10 Second steps

Infinite Time (No Time Limit)

No

No

No

No

60 sec

Recloser Enable/Disable Recloser Recl Enable Disabled/Enabled Enabled



RCPDisplay

Value Displayed

FactoryDefault


I.L. 40-386.12

2-13

2

2. 8 ACCEPTANCE TEST

a. Recloser/Synch-check Module Setup:(See Figure 2-2 for details)

a.1 Verify that jumpers J4, J5 and J6 are in the correctvoltage positions.

a.2 Verify that jumpers J1, J2 and J3 are in the desiredpositions (Normally Open or Normally Closed).

a.3 Verify that the resistor R32 near the microcontroller(U13) is present for 60 Hz, absent for 50 Hz. . (SeeIL 40-386.1)

a.4 Verify that jumpers on the filter module are in thecorrect voltage positions. (See IL 40-386.1)

a.4 In order to test the recloser, it is recommended toapply a fault to the relay using a AVO International,Doble or Powertec multiphase test equipment.

a.5 Check that “Recloser” is set to “Enabled” and theRECLOSER-IN-SERVICE LED is ON.

b. Testing the Output Contacts and Input Circuits

b.1 In order to prevent any undesired closure of thebreaker, disconnect the close contact output leads(TB2 Terminals 1, 2, 3 and 4).With the front panel white switch in the RECLOSEposition, press the SELECT push-button until theTEST mode appears. The status should show thevalue 0. Using the RAISE push-button, move to thefunction “Close Relay Contacts”. Pressing the EN-TER push-button should energize both close relays (CLOSE -1 and CLOSE - 2), aslong as ENTER is depressed.

Proceed to a similar test for the Lockout Contact and LED, the In-progress Contact,the Fail Contact and LED, and the all LEDs (for the) Recloser. These functions followthe “Close Relay Contacts”. test sequentially in the TEST mode.

b.2 The following inputs can be tested, in the “TEST” mode, by applying voltage to eachinput and observing the “Inputs” display. Scroll to the “Inputs” display, apply ratedvoltage and as each input is energized, the associated display segment changesfrom “–” to “|”.

Input Under Test Display

“52a” |- - - - -

Table 2-7: Test Settings

Sync Volt Line

Recloser 2 recl

Recl 1 52b or 3RI

Recl1 RB No

Recl1 Time 5 sec

Recl 2 3RI only

Recl2 RB No

Recl2 Time 5 sec

Fail Recl ? Yes

Fail Time 10 sec

Reset Time 15 sec

Hold ? Yes

Max Cycle ? No

Follow Br No

52a/Mancls No, Disabled

Cum. Recl ? No

Br. Oper ? No

Output 1 In-Progress

Output 2 Failed close

Remote Set Yes

Recloser Enabled

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Figure 2-2 Reclosing Option Module Component Layout

Sub 41614C19

LOCKOUT

FAILRECLOSE/

IN PROGRESS/

DRIVE TO LOCKOUT

HOLD

External RI

OUT 2

OUT 1

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c. Testing the Reclose Function and Associated Outputs (Reclose Initiate by Internal RI)

c.1 Reconnect close relay output leads. With the white switch positioned on RECLOSE,press the SELECT push-button and note that the mode display cycles through thedisplay modes. Release the push-button when the SET mode is indicated. Set all thesettings to the values given in Table 2-7.

c.2 Connect the REL 301/302 per Figure 5-4 I.L. 40-386.1. With the front panel, whiteswitch in the PROTECT position, select the SET mode and set the protection accord-ing to Table 5-4 (REL 301) or 5-5 (REL 302).

Press the RESET push-button to change the display to “READY”. If “LOCKOUT” isdisplayed instead of “READY”, there is a problem and its cause appears on the sec-ond line of the display.

c.3 Apply a fault and note the following (refer to I.L. 40-386.1 paragraph 5.1.4):

The protection should trip the breaker and reclosing starts with the first reclosure, en-ergizes the IN_PROGRESS output contact and displays the reclosure 1 dead timecountdown. When it expires, the close relay contacts close the breaker and the resetprocess is entered. Check that the reclosure returns to “READY” after resetting, andthat the IN_PROGRESS contact is de-energized.

c.4 Apply the fault as in b.4, above but this time during the reset, re-apply the fault. Therelay should perform the second reclosure, followed by a reset. In that reset phase,apply the fault again and the relay should go to “LOCKOUT” with the indication “MaxReclosures”. The IN PROGRESS contact should be de-energized, and the LOCK-OUT contact and LED energized.

Close the breaker and note that after the reset time, the relay returns to “READY”mode.

NOTE: All inputs require rated dc voltage.

This completes the acceptance test for the REL 301/302 Reclosing without Synch-check option.

2. 9 DETAILED EVALUATION TESTS WITH BREAKER EMULATION

a.1 Various control inputs are required for the breaker emulation type testing. Verificationof functions such as reclose initiation by “52b Only”, DRIVE TO LOCKOUT and

“52b” - | - - - -

“EXT RESET” - - | - - -

“DR LOCK” (Drive to Lockout) - - - | - -

“HOLD” (Freeze Reclosing) - - - - | -

“EXT. RI” (External Reclose Initiate) - - - - - |

Input Under Test Display

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HOLD require voltage to be applied to the inputs in the proper sequence. This is alsotrue of breaker auxiliary contact indication which is referred to as “the breaker” posi-tion in the text. (Trip the breaker - 52b input, voltage applied; close the breaker - 52binput, no voltage applied, 52a voltage applied). An auxiliary relay, which is electricallyoperated and reset, can simulate the functions of the circuit breaker and the circuitbreaker position indication contacts (52a and 52b). Discussion that follows is basedon using a breaker simulator using CLOSE-1 output to close the breaker. Some out-puts should be monitored to verify logic operation and will be noted. All additionalconnections will be suggested in the test procedure. Refer to Figures 2-2 and 2-6 forterminal connection details.

With the front panel, white switch in the RECLOSE position, press the RESET push-button to change the display to “READY”. If “LOCKOUT” is displayed instead of“READY”, there is a problem and its cause appears on the second line of the display(e.g. “52b Closed”).

a.2 Check of 52b Initiation. Trip the breaker simulator (apply rated dc voltage to the 52binput) and note the recloser starts with the first reclosure and closes theIN_PROGRESS output contact. The MMI displays the “Reclosure 1” dead time timecountdown and the timer setting. When it expires, the close relay contact closes thebreaker, removing voltage from the 52b input, and the reset process is started. Duringthe “Reset”, the MMI displays the reset countdown and the reset timer setting. Sincethe 52b input has been removed, the reset process will successfully complete in thereturn to “READY” state. Check that the reclosure returns to “READY” and that theIN_PROGRESS contact is opened.

a.3 Check of 52b Initiation for Reclose 2. Change the setting of “Recl 2” to “52b or3RI”. Trip the breaker simulator (apply rated dc voltage to the 52b input) and duringthe reset process, re-trip the breaker. The IN_PROGRESS output contact will closeand remain closed. The relay will skip the remaining reset time and begin the secondreclosure dead time count down. During the dead time count down close the breaker(remove dc voltage from the 52b input). Since the 52b input has been removed, thereset process will successfully complete and return to “READY” state. Check that thereclosure returns to “READY” and that the IN_PROGRESS relay is de-energized.

a.4 Check of Lockout for Unsuccessful Reclose. Trip the breaker simulator (apply rat-ed dc voltage to the 52b input) but during the reset process, re-trip the breaker. Therelay will skip the remaining reset time and begin the second reclosure dead timecount down. In the second reclosure reset phase, re-trip the breaker and the relay willskip the remaining reset time and go directly to “LOCKOUT” with the indication “MaxReclosures”. The IN_PROGRESS relay is de-energized, the LOCKOUT relay is en-ergized and the front panel LOCKOUT LED lights.

Close the breaker and note that the reset process begins. During the “Lockout Re-set”, the MMI displays the Reset countdown and the reset timer setting. After asuccessful reset, the relay returns to “READY”. “Lockout Reset” timer setting is the“Reset Time” setting.

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a.5 Check of External RI Input. Change the “Recl 1” setting to “3RI only”, change the“Recl 1 RB” setting to “No” and return to “READY” by pressing the RESET push-but-ton. Trip the breaker and note reclose 1 dead time timing does not start to countdown.Apply rated dc voltage to the external reclose initiate (EXT. RI) input. The recloserstarts reclosure 1 and energizes the IN_PROGRESS relay. The MMI displays the“Reclosure 1” dead time countdown. When it expires, the close relay contact closesthe breaker, the reset timer counts down and the relay returns to “READY”.

a.6 Check of “52b and 3RI” Initiation. Note: Setting the reclose function to respond tothe breaker being open AND a reclose initiate input, is useful in preventing the break-er from reclosing when the circuit breaker is being opened manually. Change the“Recl 1” setting to “52b and 3RI”and return to “READY” by pressing the RESET push-button. Trip the breaker and note the reclose 1 dead time timer does not start tocountdown. Apply rated dc voltage to the EXT. RI input. The recloser now starts withthe first reclosure and closes the IN_PROGRESS output contact. The MMI displaysthe “Reclosure 1” dead time countdown and the timer setting. When it expires, theclose relay contact closes the breaker and the reset process is started. During the“Reset”, the MMI displays the Reset countdown and the reset timer setting. Since the52b input has been removed, the reset process will successfully complete in the re-turn to “READY” state. Check that the reclosure returns to “READY” and that theIN_PROGRESS relay is de-energized.

a.7 Check of Hold Input. Change the “Recl 1” setting to “52b only” and return to“READY” by pressing the RESET push-button. Trip the breaker and note reclose 1dead time timing begins. Apply rated dc voltage to the HOLD input during the reclos-ing dead time the countdown stops. Remove the voltage from the HOLD input andnote the count down continues. When it expires, the close relay contact closes thebreaker, the reset timer counts down and the relay returns to “READY”.

a.8 Check of 52a Input and 52a/Mancls Logic. Change the “52a/Mancls” setting to“Yes, 52a” and return to “READY” by pressing the RESET push-button. Apply rateddc voltage to the 52a input. The relay should remain in “READY” mode. Trip thebreaker and the relay will immediately go to “LOCKOUT” with the message“52a = 52b”, the LOCKOUT relay is energized and the front panel LOCKOUT LEDlights. Note: If 52a input is removed such that neither 52a nor 52b input is present, orif 52a is in the same state as 52b, the relay reaction and message are the same aspreviously described in this paragraph. Remove the 52a input and close the breaker.

Change the “52a/Mancls” setting to “Manual Close” and return to “READY” by press-ing the RESET push-button. Apply rated dc voltage to the 52a input. The close relaycontact should close the breaker with no delay.

a.9 Check of Failed Reclose Logic. Change the “52a/Mancls” setting to “No, Disabled”and return to “READY” by pressing the RESET push-button. Disconnect the CLOSE-1 output leads from the breaker. Trip the breaker and note reclose 1 dead time timingbegins. When the dead timer times out, the recloser proceeds to the “Timing FailRecl” timer. When this timer expires the relay goes to “LOCKOUT” with the message“Failed Reclose”. The FAILED RECLOSE LED as well as the LOCKOUT LED will

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light, both FAILED RECLOSE and LOCKOUT output relays will be energized. Recon-nect the CLOSE-1 output leads and manually reset the breaker. After the reset timertimes out, the LOCKOUT LED and output relay will reset. The FAILED RECLOSELED and output relay remain latched until the RESET push-button is pressed or rateddc voltage is applied to the external reset (EXT RESET) input.

a.10 Check of Drive to Lockout Input. With the relay in the “READY” mode, apply therated dc voltage to the drive-to-lockout (DR LOCK) input. The display will then imme-diately indicate “LOCKOUT” with the message “Drive To Lockout” and the LOCKOUTLED will light and LOCKOUT output relay contact will close. When the signal is re-moved, the recloser returns to “READY”, after the “Lockout Reset” timer times out,resetting the LOCKOUT LED and relay.

If the breaker is tripped while the DRIVE-TO-LOCKOUT input is energized, the relaywill not reset upon removal of the DRIVE-TO-LOCKOUT input. Instead the MMI willdisplay “LOCKOUT” with the message “52b Closed”, the LOCKOUT LED will remainlighted and LOCKOUT output relay contact will remain closed. Manually reset thebreaker and after the “Lockout Reset” timer times out, the LOCKOUT LED and outputrelay will reset.

This completes the detailed evaluation test for the REL 301/302 Recloser without Synch-checkoption.

2. 10 SYNCHRONISM/VOLTAGE CHECK OPTION ACCEPTANCE TEST

a.1 Check of Line and Bus Voltages Inputs. Change the “Sync Set ?” setting to “Yes”,verify the “Sync Volt” setting is set to “Line” and verify that jumper P12, on the FilterModule, (see I.L. 40-386.1 Figure 5-1) is in the top position. In this example Va is cho-

sen to be the reference, “Bus” voltage. Connect a voltage source to Va and Vn “Bus”

voltage inputs (FT-1 polarity and FT-4 non-polarity). Connect another voltage sourceto the VS and VSR “Line” voltage inputs (FT-10 polarity and FT-9 non-polarity). Apply

both voltages, not to exceed 75 volts (125 volts for 120 volt option) and scroll the dis-play to “TEST” mode. Check that the voltages and angle displayed under “V Bus”, “VLine” and “Bus-Line Angle” correspond to the inputs.

a.2 Check of HBDL LED. Apply a voltage above the setting value “VMax”, 53 volts, (90volts for 120 volt option) to the Bus voltage input and below “VMin”, 13 volts, (22 voltsfor 120 volt option) to the Line voltage input. Check that the HBDL LED is lit.

a.3 Check of HLDB LED. Apply a voltage above “VMax” to the Line voltage input andbelow “VMin” voltage to the Bus voltage input. The HLDB LED should be lit.

a .4 Check of Synchronism Condition. Apply a voltage above “VMax” to both the Busand the Line voltage inputs. The angle between the two voltages must be less than

the “Sync Angle” setting (20o). Relative position of the voltages, one voltage laggingor leading the other, is not important to establish the synchronism condition. TheSYNCHRONISM LED should light. If the phase angle between the voltages is notwithin the setting value of “Sync Angle” and or one of the voltages is below “V Max”,the condition for synchronism is not met and the SYNCHRONISM LED will not light.

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This completes the basic acceptance test for the REL 301/302 Recloser with Synch-checkoption.

2. 11 DETAILED EVALUATION TESTS SYNCHRONISM/VOLTAGE CHECK OPTION WITH BREAKER EMULATION

a.1 Check of Reclose Sequence with HBDLCondition. Apply and/or verify settings in Ta-bles 2-7 and 2-8. Apply a voltage above thesetting value of “VMax” to the Bus voltage inputand a voltage below “VMin” to the Line voltageinput. Repeat the test in Paragraph 2.8, Sec-tion c.2 above. Reclosure 1 should besuccessfully completed since the voltagecheck condition is satisfied and the “HBDL”LED should be lit as verification. Note that a“Sync Time” timer count down occurs in addi-tion to the “Reset” timer count down. “SyncTime” is the minimum amount of time the volt-age check condition must be satisfied beforethe “Reset” timer count down can begin.

a.2 Check of Reclose Sequence with HLDBCondition. Apply a voltage above “VMax” tothe Line voltage input and below “VMin” volt-age to the Bus voltage input. Repeat the test inParagraph 2.8, Section c.4. Reclosure 2should be successfully completed since thevoltage check condition is satisfied and theHLDB LED should be lit as verification. Notethat a “Sync Time” timer count down occurs in addition to the “Reset” timer countdown.

a.3 Check of Reclose Sequence with Synchronism Check Condition. Apply a volt-age above “VMax” to both the Bus and Line voltage inputs. The angle between thetwo voltages must be less than the “Sync Angle” setting. Repeat the test in Para-graph 2.8, Section c.2.. Reclosure 1 should be successfully completed since thesynchronism check condition is satisfied and the SYNCHRONISM LED should be litas verification. Note that a “Sync Time” timer count down occurs in addition to the“Reset” timer count down.

Change the “Recl 1” setting to “52b only” and return to “READY” by pressing the RE-SET push-button.

a.4 Check of Reclose Sequence without HBDL or HLDB Condition. Change the“Recl1 Sync” and the “Recl2 Sync” settings to “No” and return to “READY” by press-ing the RESET push-button. Apply a voltage above the setting value of “VMax” toboth the Bus voltage and Line voltage inputs. Repeat the test in Paragraph 2.8, Sec-tion c.2. “Reclosure 1” will not be successfully completed since neither voltage check

Table 2-8: Test Settings

Sync Set ? Yes

V Max 53 Volts90 Volts (120 V)

V MIn 13 Volts22 Volts (120 V)

Sync Angle 20o

Sync Time 2.0 sec

Recl1 HLDB Yes

Recl1 HBDL Yes

Recl1 Sync No

Recl1 Wait 60 sec

Recl2 HLDB Yes

Recl2 HBDL Yes

Recl2 Sync No

Rec2 Wait No Time Limit

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condition is satisfied. Also neither the HBDL nor the HLDB LED should be lit. Afterthe “Reclosure 1” dead time expires the MMI displays the “Recl1 Wait” time count-down and the timer setting. When it expires, the reclosing sequence will go to“LOCKOUT” since neither voltage check condition is satisfied during “Recl1 Wait”time.

a.5 Check of Reclose Sequence without HBDL or HLDB Condition. Apply a voltageabove the setting value of “V Max” to both the Bus voltage and Line voltage inputs.Repeat the test in Paragraph 2.8, Section c.4.. Reclosure 2 will not be successfullycompleted since neither voltage check condition is satisfied. Also neither the HBDLnor the HLDB LED should be lit. After the “Recl Time 2” expires the MMI displays the“Recl2 Wait” “No Time Limit” and the reclosing sequence stops. The reclosing se-quence will continue to wait, indefinitely, for either of the voltage conditions to bepresent.

Satisfying either voltage check condition will cause the reclosing cycle to continueand the MMI displays the “Sync Time” count down and timer setting. If the voltagecheck condition remains satisfied, the reclosing sequence will complete successfullyafter the reset time.

Change the “Recl1 Sync” and the “Recl2 Sync” settings to “Yes” and return to“READY” by pressing the RESET push-button.

a.6 Check of Reclose Sequence without Synchronism Condition. Repeat the test inSection 2.11 Paragraph a.5 above. Apply a voltage above the setting value of “VMax” to both the Bus voltage and Line voltage inputs with an angle between the twovoltages. The angle between the two voltages should be greater than the “Sync An-gle” setting. Repeat the test in Paragraph 2.8, Section c.4..

After the “Reclosure 2” dead time expires the MMI displays the “Recl2 Wait” “No TimeLimit” and the reclosing sequence stops. The reclosing sequence will continue towait, indefinitely, for the presence of either of the synchronism or voltage check con-dition to be present.

Change the angle between the applied voltages to an angle less than the “Sync An-gle” setting. Changing the angle will satisfy the synchronism check condition and willcause the reclosing cycle to continue. The MMI displays the “Sync Time” timer count-down and timer setting. If the synchronism check condition remains satisfied, thereclosing sequence will complete successfully after the reset time.

This completes the detailed evaluation test for the REL 301/302 Recloser, Synch-check option.

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2. 12 FUNCTIONS DESCRIPTION

Table 2-9 (Sheet 1 of 3)

PROGRAMMABLE DESCRIPTIONSETTINGS/FUNCTIONS

Sync Volt This setting allows the selection of voltage input reference with respect to“Line” or “Bus” as coresponding to the synchronism voltage input. Wheth-er the Synch-check option is present or not, this setting is available to al-low correct display of metering and target voltage data. Since the refer-ence is to the synchronism voltage input, the protection voltage inputs arethe opposite reference. For example, if the “Sync Volt” setting is “Line”,the protection voltage source is Bus.

Reclosures This setting selects the maximum number of reclosures in a sequence (0to 4). The settings relating to the non-selected reclosures don’t appear onthe display. For example, if “Reclosures” is set to “2 recl” no settings forreclosures 3 or 4 will be displayed and these settings will not effect reclos-ing operation.

Recl n Selects the input(s) that will initiate the n reclosure where n represents re-closure number 1-4. “52b only” will respond only to the 52b input and “3RIonly” will respond to 3RI (internal reclose initiate signal from the protectionlogic) or External RI. “52b and 3RI” requires both 52b and 3RI or 52b andExternal RI within one second, and “52b or 3RI” allow either 52b and 3RIor 52b to initiate the n reclosure.

Recln RB If one of the setting choices for reclose initiation (“Recl n”) includes 3RI,and “Recln RB” is set to yes, a Reclose Block signal from the protection-will prevent the n relosing event from initiating. For example, “Recl n” isset to “3RI Only”. An external device energizes the External RI input andthe protection logic issues a Reclose Block signal. Reclosure n will not beinitiated.

Recln Time This is the reclose time or dead time from the initiation of n reclosure untilthe recloser checks Synchronism/Voltage requirements (if Synch-checkoption in use) and subsequentally energizes the output contacts.

Fail Recl? and Fail Time When set to “Yes”, the “FailRecl ?” setting enables the function that keepsthe close output contact energized until 52b is removed, in which case thesystem releases the close contacts and proceeds to the reset phase.When enabled, “Fail Time” sets the maximum time the close contact is en-ergized. If the breaker hasn’t closed (52b removed) before this time ex-pires, the recloser enters the LOCKOUT state, activating the FAILED RE-CLOSE contact and LED. If “FailRecl ?” is set to “No”, Close Pulse is thenext setting.

ClosePulse Active only when “FailRecl ?” is set to “No”. ClosePulse sets a fixed timethe output close contacts remain energized. After this time, if the breakerhas closed (52b removed) the system proceeds to reset, if not, the reclos-er skips to the next reclosure.

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Reset Time Sets the duration of the reset or return to “Ready” phase, starting whenthe breaker has closed (52b removed). If during this time the 52b and/or3RI, dependent on the “Recl n” setting, the recloser bypasses the remain-ing “Reset Time” and begins the next reclosure. If the reset phase is in-terrupted on the last reclose event of a sequence, the recloser bypassesthe remaining “Reset Time” and goes to LOCKOUT mode. Otherwise, atthe end of reset time, the system returns to READY mode.

Hold ? When set to “Yes”, reclose and/or reset operations are “frozen” as long asthe HOLD input is energized. The reclose sequence continues from thepoint where the HOLD input was asserted as soon as HOLD input is re-moved.

MaxCycle? and Max Time When “MaxCycle ?” is set to yes, the “Max Time” (maximum, total cycletime). The cycle is the interval which begins when the first reclose initiatesignal is recognized and ends with the relay in the “READY” mode. Thecycle time (“Max Time”) is the time allowed by the recloser to completethe cycle. If the cycle is not completed by the end of the cycle time, therecloser will proceed to “LOCKOUT”Caution must be exercised when using “Max Cycle”. If voltage checkingor synchronism checking functions are in use and any “Wait Time” is setto “Infinite Time”, it is possible for the “Max Time” to expired and cause anundesired LOCKOUT.

Follow Breaker This function is to prevent sustained pumping action of a circuit breakeras a result of a permanent fault, or any mechanical malfunction whichcauses the breaker to be closed by some means other than the designedreclosing relay action.

This function allows the relay to follow the 52b contact action. While therecloser is timing a reclosure, it checks the 52b contact for openings. If the52b contact opens, within a reclosure, the relay starts the “reset” se-quence.

If the 52b contact closes, within the “reset” sequence, the relay goes tothe next reclosure (if more reclosures remain), or to LOCKOUT mode.

52a/Mancls This setting selects the logic use of the 52a input. When “52a, Yes” is se-lected, the recloser logic provides a security relative to breaker position. Ifboth contacts are open or closed for a time greater than approximately 0.1second, the recloser will go to LOCKOUT mode.

When “Manual Close” is selected the 52a input is used for initiation of amanual close sequence. (See below for “Manual Close” sequence details.

Cum. Recl? and Cum. Recl When “Cum. Recl?” is set to “Yes”, this function allows the recloser tocapture the number of reclosing events from count reset to the maximumallowable number of reclosures, “Cum. Recl”, at which time the reclosercauses an alarm output (Alarm 1). The function is reset (Alarm 1 turnedoff) only when a new value for Cum Recl has been entered in the settingmode or “Cum. Recl?” is set to “No”.

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Br Oper.? Setting “Br Oper.?” to “Yes” selects the breaker operations limiting set-tings. These settings allow specific limitations to be placed on reclosing toprevent damage to the power circuit breaker being controlled. The break-er limit functions “Max Count”, “Duration” and “Recovery” operate as fol-lows:

Max Count Maximum number (“Max Count”) of reclosures allowed during a giventime duration. For example a breaker may have a limit of 15 operations ina 30 minute time period. Often a limiting number of reclosures in a giventime is the case for circuit breakers with pre-insertion resistors

Duration As stated above, “Duration” is the time period being monitor in which thelimiting number of reclosures is checked.

Recovery When the “Max Count” per “Duration” limit has been reached, the circuitbreaker usually must remain open for a set period of time which is the “Re-covery” time. The three parameters, “Max Count”, “Duration” and “Recov-ery” are detailed by the circuit breaker manufacturer.

Output n Output contacts 1 and 2 can be configured for seven function of indica-tions. The functions choices are listed in Table 2-6.

Remote Set When selected, setting changes are allowed via the communicationsport(s). This setting must be set to “Yes” or settings cannot be changedthrough either comunications port..

Man Close When selected, this function allows the 52a input to initiate a closurewhen the relay is in the Lockout State or the Ready State . (See the setting“52a/Mancls above). Manual Close will take place regardless of the statusof the Drive-to-Lockout or Hold inputs. This closure can be supervised byvoltage/synchronism check (HLDB, HBDL or synchronism).Note: A manual close can only be initiated when the recloser is in Lockoutor Ready State..

Recloser This function allows one to disable/enable the Recloser/Synch-check op-tion. The front panel, RECLOSER IN SERVICE LED, will go out when thissetting is set to “Disabled”. The LCD display (if supplied) will also showTime SetWhen selected, enables changing real time clock settings.

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Table 2-10

ADDITIONAL FUNCTIONS WITH THE SYNCH-CHECK OPTION

Sync Set? “Sync Set?” must be set to “Yes” to enable all voltage/synchronism fuc-tions. Must be set to “Yes” to view and set the following settings.

VMax The voltage threshold above which the bus or line is considered “live”.

VMin The voltage threshold under which the bus or line is considered “dead”.

Sync Time The minimum time during which selected conditions (HBDL, HLDB,SYNC) must remain present to alow reclosing.Note: “Sync Time” timer countdown is in addition to the dead time set by“Recln Time”. “Sync Time” will countdown after the dead time countdownis complete and before the close contacts operate.

Sync Angle Selects the maximum angle for which Line and Bus are considered in syn-chronism.

Recln HLDB When set to “Yes”, permits a reclosure when the Line is “live” and the Busis “dead”. (n represents the reclosure number 1-4)

Recln HBDL When set to “Yes”, permits a reclosure when the bus is “live” and the lineis “dead”. (n represents the reclosure number 1-4)

Recln Sync When set to “Yes”, permits a reclosure when the synchronism condition isfulfilled (n represents the reclosure number 1-4). This function can also bereferred to as Live Line, Live Bus (LLLB) and will operate if voltage above“V Mav” is present on the bus and the Line and the angle difference is low-er or equal to the Sync angle).

Recln Wait “Recln Wait” is the time the reclosing logic will wait for set voltage or syn-chronism check actions to occur (n represents the reclosure number 1-4).If the time expires before the voltage or synchronism check actions occur,the recloser goes to LOCKOUT mode and displays “LOCKOUT” “No Bus-Line Condition”.

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Table 2-11

HARD WIRED FUNCTIONS DESCRIPTION

Drive to Lockout This is the optically isolated input DR LOCK. When energized, it will drivethe recloser to lockout from any point in the reclosing sequence includingREADY mode. The recloser will remain in LOCKOUT with the message“Drive to Lockout” on the display until the drive to lockout input is re-moved. Upon removal, the recloser will go through the reset sequence be-fore going to “READY” state assuming no other condition holds the relayin LOCKOUTNote: When manually opening the circuit breaker, controlled by the re-closer, a “wetted” control switch contact should be wired to this input toinsure the recloser goes to and remains in the LOCKOUT mode while thebreaker is open.

External Reclose Initiate This is the optically isolated input EXT RI and is, used to initiatethe recloser externally. This input is useful when the recloser isshared by other protection devices (e.g. primary and backup relay-ing). Initiation, from this input is enabled by using one of the “Recln” choices including “3RI”.

Hold This optically isolated input “freezes” the reclosing sequencewhen energized.. All timing and all sequencing will stop until the“HOLD” input is removed. It will then continue from the point atwhich action was suspended.

Lockout This is an output relay with N.O. or N.C. contacts selectablethrough a jumper. This output is energized when the relay is in the“LOCKOUT” state.

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