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Disconnector/Circuit Breaker

Imported from China

Manufacturer: Pinggao Group Co., Ltd.
Contractor/Distributor: 
Supplied To: Sunkoshi Hydropower Station

Technical Specifications for 11KV Vacuum Circuit Breaker
S.N.
Name
Spec.
1
Type
VSI 1/25 or equivalent
2
Applicable Standard
IS 13118/IEC 56/BS 5311
3
Rated Voltage
11 KV
4
Maximum System Voltage
12 KV
5
Lightning Impulse withstand voltage
75 KV
6
One Minute Power Frequency withstand voltage
28 KV
7
Rated Frequency
50 Hz
8
Rated Continuous Current
800A
9
Short Circuit Breaking Current
25 kA for 1 sec
10
Rated Making Current
62-65 kA
11
Total Interrupting Time
Less than 80 ms
12
Total Making Time
Less than 100 ms
13
Operating Voltage for closing and tripping coils
110 V DC
14
Operating Mechanism
AC/DC Motor operated
15
Additional Spring Charging
Manual
16
Supply voltage of auxiliary circuit
1-Φ, 240 V AC
17
Operating Sequence
0-0.3sec-CO-3min-CO

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