NG TS 3.24.54
National Grid Technical Specifications - Circuit-breaker Point-on-wave Switching Control
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| Organization: | NG |
| Publication Date: | 1 March 2001 |
| Status: | active |
| Page Count: | 10 |
scope:
This Specification details the functional and performance requirements for point-on-wave switching control (POW) function for circuit-breakers on National Grid's 400 kV, 275 kV, 132 kV and lower voltage systems.
Informative: On National Grid's systems, the POW function is normally used for closing MSC circuitbreakers at voltage zero and for opening shunt reactor circuit-breakers at current zero.
Document History
NG TS 3.24.54
March 1, 2001
National Grid Technical Specifications - Circuit-breaker Point-on-wave Switching Control
This Specification details the functional and performance requirements for point-on-wave switching control (POW) function for circuit-breakers on National Grid's 400 kV, 275 kV, 132 kV and lower...