3-power circuit breaker69kv

8/11/2019 3-Power Circuit Breaker69kv

1/6

E.1.3: POWER CIRCUIT BREAKER

Technical Data Sheets E1-PCB-1/6

Name of Bidder:

Name & Signature of Bidder's Representative:

Designation:

E.1.3: POWER CIRCUIT BREAKER 69KV

B.1 Technical Characteristics and Requirements

B.1.1 Application

Employers Requirement

a. Breaker Application ( general purpose, definite purpose) Refer to the single line diagram

b. Overhead Line, km 5 km more or less

c. Submarine Cable

1. Length, km N/A

2. Capacitance/unit length per phase, mF/km N/A

d. Tie breaker in switchyard N/A

e. Transformer Refer to the single line diagram

f. Shunt Reactor, kVAR/phase N/A

g. Shunt Capacitor, kVAR/phase N/Ah. Series Capacitor, kVAR/phase N/A

i. Capacitor Bank

1. Nominal Voltage, kV N/A

2. Connection N/A

3. Switching N/A

4. Impedance between banks, W N/A

j. Individual pole operation (open and close): 3-pole operation

k. Independent pole tripping No

B.1.2 Circuit Breaker Electrical Characteristicsa. Rated Maximum Voltage, kV 72.5

b. Rated Voltage range factor 1.0

c. Rated Insulation Level

1. Short-durationPower Frequency Withstand Voltage, 1

min. dry, kV rms 160

2. Lightning Impulse Withstand Voltage, kV, (peak

value) 350

d. Rated continuous current at System Frequency, A rms 1200

e. Rated Short Time Withstand Current, kA rms 20

f. Rated Interrupting Time, milliseconds (ms) Not longer than 83msg. Maximum Permissible Tripping Time Delay, sec. 2

h. Rated closing and latching current, kA peak 52

i. Reclosing Duty Cycle O-0.3s CO-3min CO

j. Maximum Permissible Tripping Current

1. Voltage/Impedance By Contractor

2. Cut-off Current By Contractor


2/6



Name of Bidder:


Designation:


k. Minimum Dead Time to insure that closing time is not too

short By Contractor

B.1.3 Circuit Breaker Physical Characteristics

a. Location (specify indoor, outdoor) outdoor

b. Enclosures (specify single pole tank, three-pole tank) Single-pole tank

c. Number of Interrupting Modules/Pole 1

d. Medium of Interrupting SF6

e. Interrupting Module (specify Live tank or Dead tank) Dead Tank or Live Tank

f. Mounting on: (specify individual foundation, common

foundation, frame) By Contractor

g. Phase Spacing between tops of bushings (if provided in

common enclosures) By Contractor

h. Minimum distance between tops of bushings of same pole By Contractor

B.1.4 Bushing Characteristics

a. Rated Maximum Voltage, kV 72.5

b. Creepage length, mm 1812.5

c. Color Brown

d. Maximum cantilever strength, kg By Contractor

e. Must be suitable for live line washing (Yes, No) Yes

f. Internal bushing insulation SF6 gas

B.1.5 Operating Mechanism and Auxiliaries

a. Operating mechanism Motor Spring Charged

b. Motor Operating mechanism voltage (AC, DC) 230 Vac, 1 , 60Hz

c. Closing coil voltage (AC, DC) 48 Vdc

d. Tripping Mechanism

1. Number of trip coils (circuits) per pole one

e. Tripping mechanism Voltage, Vdc 48 Vdc

f. Number of additional convertible auxiliary contacts above

those normally required for circuit breaker operation 10A, 10B

g. For compressed gas or air blast circuit breakers, on decrease

of gas pressure below minimum value of the circuit breaker

1. If closed, shall bePT - Prevented from Tripping

TA - Trip Automatically PT

2. If open, shall be

PC - Prevented from Closing

CA - Close Automatically PC


3/6



Name of Bidder:


Designation:


B.1.6 Current Transformers (CT)

a. If dead tank type circuit breakers are to be supplied,

bushing type current transformers are to be provided oneach bushing turret Yes

b. If required, they shall be as mentioned in the specifications

for current transformer of Section E.1.5 Yes

c. No. of cores per PCB bushing turret 3

B.1.7 Miscellaneous Accessories

a. Breaker Position Indicator (both mechanical & light) Yes

b. Provision for Mounting Travel Analyzer N/A

c. Manual Closing Device Yes

d. Operations Counter Yes

e. Cable duct from the control cubicle down to cable trench tobe provided by contractor Yes

g. Type and size of Ground terminal connectors to be

furnished by the Contractor for the circuit breaker shall be

suitable for (specify size of conductor)

> 125 mm2

insulated tin-

annealed stranded Cu

conductor PVC insulated

h. Required no. of ground terminal connectors on the structure

of the breaker:

1. If mounted on individual structure 1

2. If mounted on common structure 2

B.1.8 Alarm Devices

All alarm indicating devices shall have (spdt, dpdt) DPDT

electrically independent contacts to be used on (volts dc) control

system to open or close 0.1 amperes inductive circuit 48 Vdc

B.1.9 Service and Maintenance

a. Minimum permissible number of interruptions before any

contact check or mechanical check with opening of gas

compartment is necessary:

In accordance with the

operating endurance

capabilities for circuit breakers

per ANSI standard C37.06-

2000

b. Leakage rate of SF6 per year, % < 1

B.2 Test Requirements

a. Is breaker design new or of previous design with substantial

changes in design and/or rating (Yes, No) By Contractor

Note: If yes, certified design tests and

reports are required Yes

b. Design test and reports required (Yes, No) Yes


4/6



Name of Bidder:


Designation:


c. Certified test design reports of prototype or duplicate

production type are acceptable (Yes, No) Yes

d. Test reports of licenser instead of his own (Contractor) is

(not acceptable, acceptable) not acceptablee. Test frequency requirements 60 Hz

f. Factory Acceptance (Routine) Tests to be performed on

each type and voltage rating of the equipment Yes

g. Factory Routine Tests (Routine) to be witnessed by

Employers Representative (s) Yes

h. Required no. of personnel of Employer to witness routine

tests Three (3)

B.3 Auxiliary Power Supply

B.3.1 The items listed below shall be designed to receive the following auxiliary voltage source.

a. Space heaters for the control cubicle, Vac 230 Vac, 1- , 60 Hz

b. Internal lights and convenience outlets 230 Vac, 1- , 60 Hz

c. Motors 230 Vac, 1- , 60 Hz

d. Controls 48 Vdc, +10%, -15%

e. Indicating lights for position indicator of operating

mechanism 48 Vdc, +10%, -15%

B.4 Spares and Spare Parts

B.4.1 The following parts aside from those Contractors recommended spare parts shall be furnished for circuit

breakers:

a. Unit(s) of PCB (one-breaker pole ) w/o supporting structure 1

b. Set(s) of tripping coils for the circuit breaker 2

c. Set(s) of closing coils for the circuit breaker 1

d. Set(s) of timer relay used 1

e. Set(s) of anti-condensation heaters for each breaker type 1

f. Set(s) of motor complete with belt and pulley for the

operating mechanism of the breaker 1

g. SF6 gas in non-returnable steel cylinder in an amount enough

to refill the largest circuit breaker 1-cylinder

B.4.2 All spare parts shall be interchangeable with and identical in all respect to the original parts.

B.4.3 All breakers of the same rating and type and all its components shall be fully interchangeable.

B.5 Tools


5/6



Name of Bidder:


Designation:

B.5.1 No additional tools would be required for the power circuit breaker except those special tools which the

Contractors deems necessary for satisfactory installation, operation, testing and maintenance of the circuit

breakers.

C. Other Technical Data to be Filled-in by Contractor

C.1 The Contractor furnished data and information are included in this Specification to indicate the guaranteed

performance data, predicted performance, interface requirements and construction features of all Contractorfurnished equipment. The accuracy of such information and the compatibility of such information with

overall performance requirements specified by Employer are the sole responsibility of the Contractor.

C.2 Environmental Considerations

C.2.1 In accordance with Paragraph 1.1.8 of the General Technical Requirements and the Technical Data

Sheets of Section E.1.1, the operating environment for this installation _(will , will not ) affect the life

expectancy of the components used in this equipment. If there will be an effect, the following components

will be affected as follows:

Component Effect

_________________________ _________________________

_________________________ _________________________

_________________________ _________________________

C.3 Other Technical Data for Power Circuit Breaker

a. Country of Origin _______________________________________

b. Manufacturers _______________________________________

c. Type and Designation _______________________________________

d. Control Circuit

1. Closing voltage range, V _______________________________________

2. Maximum closing current, A _______________________________________

3. Tripping voltage range, V _______________________________________

4. Maximum tripping current, A _______________________________________

e. Breaker Operating Time (in ms) for

Rated Control Voltage and Pressure

1. Opening time from energization

of trip coil to contact parting _______________________________________

2. Arcing time _______________________________________

3. Break time _______________________________________

4. Close open time _______________________________________

5. Closing time _______________________________________

f. Gas Pressures

1. Pressure at 20C of interrupting medium _______________________________________


6/6



Name of Bidder:


Designation:

2. Pressure at 20C of insulating medium _______________________________________

g. Gas System

1. SF6 Gas shipment method in

breaker or separate; (Yes, No) _______________________________________

2. If Yes, no. of containers, each _______________________________________

3. Weight per container, kg _______________________________________

4. Gas per container, kg _______________________________________

5. Total quantity of SF6 gas to be supplied

with the original equipment, kg _______________________________________

6. Total quantity of SF6 gas

required per breaker, kg _______________________________________

7. Guaranteed maximum SF6 gas

leakage rate in kg/yr _______________________________________

8. No. of gas monitoring systems

included with the equipment _______________________________________

9. In-service life of gaskets, years _______________________________________

10. Storage shelf life of gaskets, years _______________________________________

h. Maximum Foundation Loading during

Operation

1. For horizontal breakers, N _______________________________________

2. For vertical breakers, N _______________________________________

i. Motor Capacity

1. Type _______________________________________

2. Horsepower, hp _______________________________________

3. Current, start/run _______________________________________

3-power circuit breaker69kv

Documents