izmx trip unit, settings, tripping curves - eatonpub/@electrical/... · izmx trip unit, settings,...
TRANSCRIPT
![Page 1: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/1.jpg)
2008 Eaton Corporation. All rights reserved.©
IZMX trip unit, settings, tripping curves
Ralf Nikolic/ PM ACB (air circuit breaker)
December, 15th 2011
![Page 2: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/2.jpg)
Trip unit
1. Overview around trip units
![Page 3: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/3.jpg)
Trip unitCommon trip units for IZMX16 and IZMX40
![Page 4: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/4.jpg)
A-Type520 LI
V-Type520 LSI(G)
U-Type520M LSI(G)
P-Type1150 LSI(G/A)
Basic functions and optional functions
Trip units – basic offer Sample:IZMX40H3-A32W
Distribution protection
Selective protection
Universal protection
Professional protection
![Page 5: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/5.jpg)
Catalog - overview
Page 6
![Page 6: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/6.jpg)
Catalog - overview
Page 7
![Page 7: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/7.jpg)
Catalog - excerp:Further trip unit options
Page 39
![Page 8: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/8.jpg)
Digitrip - trip unitsPictures of variants
Digitrip 520 - Typ A / V Digitrip 520M - Typ U Digitrip 1150i - Typ P
![Page 9: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/9.jpg)
Pictures: IZMX..A, V (Digitrip 520)Variants with options
V V with Earthfault protection G
A
![Page 10: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/10.jpg)
Pictures: IZMX..U (Digitrip 520M)Variants with options
![Page 11: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/11.jpg)
Pictures: IZMX.. U with ARMS (Digitrip 520M)
V with ARMS
V with ARMS and Earthfault protection G
Variants with options
V with ARMS and Earthfault alarm G
![Page 12: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/12.jpg)
2. Overview trip units
top -> down
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 13: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/13.jpg)
Sealable transparent frontcover:
Standard NEW
Sealing the mounting screw prevent removing the transparentfront cover. => settings can not be changed
For all trip units same function:
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 14: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/14.jpg)
Reset-Button:
• indicates that the trip unit switched OFF (triped )the breaker
• Safety: Must be reset before the breaker can be switched ON after a fault.
• Optional:- Automatic RESET- Remote RESET (magn. Coil with different
voltages)
NEU
IZMX16 and IZMX40 circuit breaker Digitrip trip unitsFor all trip units same function:
![Page 15: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/15.jpg)
Test socket: connecting test devices:•
IZM-TEST-KIT orIZM-SIM-KIT
Test devices for series IZMX and IZM26 aplicable.
IZMX16 and IZMX40 circuit breaker Digitrip trip unitsFor all trip units same function:
![Page 16: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/16.jpg)
Rating Plug• independent from internal current transformer exchangeable / easy plug in and safe by screw•
• Responsible for rated current of the IZM • Currents for In: 200A-4000A For all trip units as: • A - Distribution protection- V – Selective protection -
- U - Universal protection - P – Professional protection
NEU
In cases of field installation:The rated current of the rating plug has to be lower (or same) than the rated current of the breaker. (Safety: Coding of the white screw protect against wrong combinations)
IZMX16 and IZMX40 circuit breaker Digitrip trip units
For all trip units same function:
Take into account:
All adjustments are based on the rated current In!
![Page 17: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/17.jpg)
Differentiated trip indication
Indication of the trip cause with LED.Indication:
- Overload- Short circuit (delayed)- Short circuit (un-delayed)- Earthfault
With pushing of „Reste“ Button the LED-indication will be cleared.
IZMX16 and IZMX40 circuit breaker Digitrip trip unitsFor all trip units same function:
![Page 18: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/18.jpg)
NEW
oror
STATUS LED •Off - no power to the trip unit•On Green – no aux power and not at power up level•Flashing Green – Good, microprocessor is running•Red then Orange flashing – Trip actuator is not plugged in, •ROM or RAM error, calibration error, Making Current Release switch not indicating state correctly.
INST LED•Flashing Red - Instantaneous fault trip, Making Current •Release trip, Maintenance mode tripFlashing Orange – Rating plug bad or missing•
LONG LED•Flashing Red - Long Time trip•Flashing Orange – Over temperature trip•
SHORT LED•Flashing Red – Short Time trip•Flashing Orange – Improper Breaker Position indication•
GROUND LED•Flashing Red – Ground fault trip•
GROUND ALARM LED•Flashing Red – Ground fault pickup level exceeded•
HIGH LOAD ALARM LED•Flashing Red – Phase Current at 85% of Long Time Pick up •
For all trip units A, V, U same function:
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 19: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/19.jpg)
Battery = Powered the LED for the trip cause request
Battery Test or Reset of the trip cause LED
LED for the Battery Test
IZMX16 and IZMX40 circuit breaker Digitrip trip unitsFor all trip units same function:
![Page 20: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/20.jpg)
For all trip units A,V, U same function
3. Setting of the protection parameters
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 21: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/21.jpg)
Short circuit protection delayed (S)
all current settings
Short circuit protection un-delayed (I)
all time settings
Overload protection (L)
LED‘s for tripping cause
Digitrip trip units„overview“ – setting of the protection parameters
For all trip units A,V, U same function
![Page 22: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/22.jpg)
time (t)
current (I)
L
S
I
100-500ms
2-24s
Ir=0,5-1 xIn
2-10 xIn
2-12 xIn und OFF
In=4000A
6xIrExample,Ir=0,5: 1xIr (=2000A) (=12000A)
Digitrip trip units„overview“ – setting of the protection parameters
![Page 23: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/23.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
Ir = LD x In
= 1.0 x 1000A
= 1000A
In = rated currentIr = Max Continuous Current Rating
4
![Page 24: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/24.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000AIr = 0.9 x 1000A = 900A
3
4
20
1 106
Ir = 0.5 x 1000A = 500A
LD = 1.0
LDT = 4 s
SD = 4
SD = Flat
SDT = 0.3s
INST = Off
LD = 0.9
LDT = 4 s
SD = 4
SD = Flat
SDT = 0.3s
INST = Off
LD = 0.5
LDT = 4 s
SD = 4
SD = Flat
SDT = 0.3s
INST = Off
4
![Page 25: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/25.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000AIr = 1.0 x 1600A = 1600A
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
LD = 1.0x
LDT = 10 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
4
1600A
![Page 26: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/26.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000A
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
LD = 1.0x
LDT = 4 s
SD = 10x
SD = Flat
SDT = 0.3s
INST = Off
4
![Page 27: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/27.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000A
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.5s
INST = Off
4
![Page 28: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/28.jpg)
Time Current Curves – Long and ShortT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000A
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
4
LD = 1.0x
LDT = 4 s
SD = 4x
SD = I2t
SDT = 0.3s
INST = Off
![Page 29: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/29.jpg)
Time Current Curves – InstantaneousT
IME
IN S
EC
ON
DS
10
2
10.90.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Current in multiples of Ir
Ir = 1.0 x 1000A = 1000A
3
4
20
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.3s
INST = Off
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.5s
INST = Off
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.5s
INST = 10x
4
Can not show this on this curve!Long/Short curve is in multiples of IrInstantaneous is in multiples of In
![Page 30: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/30.jpg)
Time Current Curves – InstantaneousT
IME
IN S
EC
ON
DS
1.0
0.2
0.10.090.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
Current in multiples of In
0.3
0.4
2.0
1 106
LD = 1.0x
LDT = 4 s
SD = 4x
SD = Flat
SDT = 0.5s
INST = 10x
4
0.5
![Page 31: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/31.jpg)
Catalog Main optional trip unit functions
(G) Earth fault protection
(A) Earth fault alarm
(M) ARMS
(Z) ZSI (Zone selective interlocking)
4. Catalog Options
![Page 32: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/32.jpg)
Catalog (G) Earth fault protection Power System Grounding
L1
L2L3
L1L2
L3
L3
L1
L2L3
L1
L2L3
L1L2
L3
L1
L2L3
L1L2
N
N
![Page 33: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/33.jpg)
1. Source ground: Earth fault metering at the earthed Starpoint
2. TU adds the vectors (lengths and direction) of all currents.
Load
3 Phasen + Neutral Grit
4. Accidental ground
3. Zero Sequence metering
Ground Current Protection
![Page 34: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/34.jpg)
Type 2. (3pole breaker)External current transformer for the N-conductor
External currrent transformer for IZMX40 (Article: IZMX-CT40-N)
External currrent transformer for IZMX16 (Article: IZMX-CT16-N)
Required:External Transformer – wired on auxiliary terminals no. 15 and 16
CT with copper termination
![Page 35: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/35.jpg)
Type 1. Source ground orType 3. Zero Sequence metering
3. For IZMX16 only
1. For IZMX16 and IZMX40
Article: IZMX-EFS
Required:External current transformer – to be wired on the auxiliary terminals 17 and 18. and a jumper on Terminal 19 and 20.
Type 1. Source ground: Earth fault metering at the earthed Starpoint or3. Zero Sequence metering
![Page 36: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/36.jpg)
Catalog (A) Earthfault - Alarm
An auxiliary contact close when an earth fault occur.
Comparable to earth fault protection – but without tripping.
![Page 37: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/37.jpg)
Katalog (M) ARMS
ARMS = Arc Reduction M aintenance S ystem
Patent of EATON
![Page 38: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/38.jpg)
without ARMS with ARMS
ARMSIn cases of an arc fault the tripping of the trip unit speeds up. The released energies are reduced as: Radiation, Temperature, Pressure, Forces of magnetic fields.
Additional protection in cases of maintanance
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 39: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/39.jpg)
ARMS Arc Reduction Maintenance System
IZMX16 / IZMX40
ARMS can be enabled •manually at the trip unit orautomatically / remotely by a contact
before maintenance in the field beginsRemote: External contact on 33, 34
An LED die displays ARMS active or an external •signal lamp on terminal 11, 12.
ARMS is faster than the un-delayed short circuit •protection.
A control voltage of 24 VDC (+, -10%) at the •terminals 21, 22 is required.
![Page 40: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/40.jpg)
Catalog (Z) ZSI = Zone Selectiv Interlocking
ZSI is described in the Technical Report •IEC/TR 61912-2 Low voltage switchgear and controlgear – Overcurrent protective devices – Part 2: Selectivity under overcurrent conditions.The term zone selective interlocking is used to •describe a method of controlling circuit breakers to provide selectivity with very short interruption times for the breaker closest to the fault.
![Page 41: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/41.jpg)
Zone Selective Interlocking
There are different levels (zones) of protection •that isolate the fault in the distribution system.
ZSI may be applied for faults between phases •or earth-faults or both.
ZSI is applied to the short time faults where •time selectivity can be achieved with the breakers between the zones.
Each breaker should have a ZSI unit for •selectivity.
See next picture ->
![Page 42: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/42.jpg)
Zone Selective Interlocking Example
3
2
1
ZSI
ZSIZSI
ZSI
ZSI
Zone 1
Zone 2
Zone 3
CB2
tsd =200ms
CB3
tsd = 200ms
CB5
tsd =100ms
CB4
tsd = 100ms
CB1
tsd = 300ms
M
![Page 43: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/43.jpg)
5. Further information
IZMX16 and IZMX40 circuit breaker Digitrip trip units
![Page 44: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/44.jpg)
Thermal Memory electronically simulates •the thermal condition of the electrical load to prevent overheating caused by repeated overload conditions.Thermal Memory function will cause faster •trip times in sequential testing of breaker poles!The electronic trip unit Thermal Memory •function replicates the bi-metal function of a mechanical trip unit.
Thermal Memory
![Page 45: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/45.jpg)
Thermal Memory
Thermal Memory •Jumper on Digitrip 520 / 520M
Program setting on •Digitrip 1150
![Page 46: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/46.jpg)
Thermal Memory
A, V, U- trip unit•Thermal Memory is active when the jumper is removed
P- trip unit •Program setting
For all trip units same function:
![Page 47: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/47.jpg)
Upgrade (exchange) of trip units in the field
The socket contains the „acknowledge“ of the breaker •IZMX16 and IZMX40:
Breakig capacity Icu / Ics•Rated short circuit withstand Icw, •max. rated current,•Max. making current•
…and belongs / remains in the breaker.
The socket informs the exchangeable trip unit •about this breaker data Unmistakeable exchange of trip unit and via coding •even for the rating plugToolless exchange (plug and work)•Socket contains the Battery, (storage of tripping •causes)Battery Test- and Reset-Button. -> The Intensity of the •Battery-LED informs about the Battery condition. Longer actuation resets the tripping cause information.
The trip units are now easier and saver exchangeable. Re-wiring of the important current transformers are no more risk.
Sockel
![Page 48: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/48.jpg)
Rogowski-sensor
IZMX40 Sensor4000A
IZMX16 Sensor1600A
The advantage of the Rogowski-•sensors are the ferritless core. This results in no saturation an the CT can be uses in a wider range of current under linear and precise measuring. The CT has an additional coil to •provide the power supply for the trip unit.
![Page 49: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/49.jpg)
– IZMX.. U with Display (Digitrip 520M)
Display:PH1, 2, 3 = current (A) of phases L1, 2, 3•PH4 = N – neutral-current•H5 = G – earthfault-current•HI = highest phase-current•OL = Current that let to the overload trip (first in first out)•
Scroll Button to display memory•
HL = Phase-currrent at 85% of overload setting (Ir).•HELP = trip unit not calibrated. •9999 = highest value to display = 4 digits. •
![Page 50: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/50.jpg)
P-trip unit (Digitrip1150)
6. The new high end trip unit P (Professional)
NEW
„All known functions available and easy setting“
„easy adjustment for the needs and application at the trip unit….or with the communication bus function remotely“
![Page 51: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/51.jpg)
With high definition , modular…
..color grafic display
P-trip unit (Digitrip1150)
![Page 52: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/52.jpg)
P-trip unit (Digitrip 1150i)further technical information
New Hardware Platform — �
Digital Signal Processor – 120MHz (today �
4MHz)
A minimum of 64 samples per line for each line �
cycle on each phase for current and voltage
New analog sensing circuit focused on higher �
accuracy (testing in the laboratory so far is yielding < 2% on pick-up and trip times.)
Metering accuracy will be 1% of READING�
Color Graphic Display �
Voltage, line to neutral readings. �
Flexible communication design�
![Page 53: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/53.jpg)
Value of Improved Metering CapabilityExample:
1% of full load (rated current) = +/- 40A
1% of READING = +/- 1A
Input of 100A
4000A Breaker
60A 140A
101A99A
Market Standard for Breakers
IZMX with P trip unit
100.1A99.9ARevenue Grade Metering (PMX)
Meter
Extra Wiring
CT’s
Special Bus Bar
Improved metering can reduce the use of using additional metering equipment and can reduce panel
assembly time
![Page 54: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/54.jpg)
P-trip unit (Digitrip 1150i)Setting at front face
1.
1.
2.
2.
„All known functions available and easy setting“
![Page 55: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/55.jpg)
P-trip unit (Digitrip 1150i)Setting at front face
„easy adjustment for the needs and application at the trip unit….or with the communication bus function remotely“
![Page 56: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/56.jpg)
External power supply for P-trip unit
IZMX16 (NF)
One PT module supplies 16 breaker
Rate to 690Vac, •
One PT Module for 16 •breaker
Switches integrated, •
Compact housing, •
DIN rail mounting on back•
![Page 57: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/57.jpg)
To be highlighted:
Relay Protection package •
User enable/disable with Time Delay•Adjustable under/over voltage release (trip or alarm)•
Adjustable under/over frequency release (trip or alarm)•
Voltage unbalance (trip or alarm) •
Reverse power (trip)•
Phase Rotation (alarm)•
Protective Relay Features
![Page 58: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/58.jpg)
Digitrip 1150 Slope Selection
Slope •Selection
I2T•
Slope •Selection
I4T•
![Page 59: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/59.jpg)
Digitrip 1150 Slope Selection
Slope Selection•I2T•
I4T•
IEC A (Normal Inverse)•
IEC B (Very Inverse)•
IEC C (Extremely Inverse)•
![Page 60: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/60.jpg)
„Interfaces“
ModbusRTU
Slave•
PROFIBUS-DP
V0 Slave•
Ethernet
ModbusTCP i.V.•
SMTP Mail•
http(s) WebServer•
IZM
IZMX 16/40
MCAM
ECAM
PCAM
ICAMIncomBUS(USA)
Communication
![Page 61: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/61.jpg)
IZMX Communication Modules
Flexible Communication Platform — �
Modbus RTU�
PROFIBUS DP�
Ethernet�
INCOM �
Module / address stays with cassette�
Communications “Open” and “Close” via �
module not through trip unit
+24 Volt DC control power�
Use with U- und P-trip units�
![Page 62: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/62.jpg)
The Communication modul contains change over contacts for ON and OFF coils
Spring release SR and Ashunt trip ST in the breaker
Communications Open / Close via bus - Wiring
![Page 63: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/63.jpg)
IZMX Communication module installation
![Page 64: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/64.jpg)
IZMX16 and IZMX40 Switch disconnector (without trip unit)
Switch disconnector INX…
Without trip unit•
without internal current •transformer
With making current •release (MCR)
![Page 65: IZMX trip unit, settings, tripping curves - Eatonpub/@electrical/... · IZMX trip unit, settings, tripping curves ... Distribution protection Selective protection ... Earthfault protection](https://reader031.vdocument.in/reader031/viewer/2022020205/5b8a18427f8b9a78618d4148/html5/thumbnails/65.jpg)