2830862

NG TR(E) 433 [ Active ]

Technical Reports - Re-Verification of the Short-Circuit Capability of the 275kV OBR60 and OBR60/72E Circuit-Breaker Designs

standard by National Grid , 08/01/2006

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PURPOSE AND SCOPE

This document summarises the results of short-circuit testing of re-furbished OBR60 and OBR60/72E circuit-breakers and makes recommendations regarding the continued use of these designs on the National Grid electricity transmission system. The testing demonstrated that the circuit-breakers, as re-furbished by National Grid at the Leicester refurbishment centre, retain their full short-circuit interrupting capability and are suitable for continued service.

 

Product Details

Edition:
1
Published:
08/01/2006
Number of Pages:
15
File Size:
1 file , 1.1 MB