Product Overview:GW7B-126KV 145KV 252KV 420KV Series Disconnector
This product is a three column horizontal fracture switch flip type, which can be equipped with JW10 type grounding switches on one or both sides. The isolation switch adopts SRCJ2 electric operating mechanism three pole linkage operation; The grounding switch adopts SRCS type manual operating mechanism or SRCJ type electric operating mechanism for three pole linkage operation.
This product complies with standards such as GB1985-2004 "High-voltage alternating current disconnectors and earthing switches", GB11022-1999, DL/T593-2006 "Common specifications for high-voltage switchgear and controlgear standards", DL/T486-2000 "Specifications for HV AC disconnectors and earthing switches", and also meets the "Relevant Regulations on Ordering High Voltage Isolating Switches" issued by State Grid Corporation of China for improvement. Through a complete set of type tests and seismic resistance calculations with a 9-degree intensity.
Specifications and Parameters:
|
Rated voltage (kV) |
72.5，126，145，252，363，420，550，800 |
|
Rated frequency (Hz) |
50/60 |
|
Rated current (A) |
1250、2000、2500、3150、4000、5000 |
|
Rated peak withstand current (kA) |
80, 100, 125, 160 |
|
Rated short-time withstand current (kA) |
31.5, 40, 50, 63 |
|
Rated short-circuit duration (s) |
3、4 |
|
Mechanical lifespan (times) |
10000 |
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