NG CH 10
Commissioning Handbook - Primary and Secondary Injection Requirement for an Additional Circuit of High Impedance Circulating Current Busbar Protection with Single (Duplicated) Relays per Zone
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| Organization: | NG |
| Publication Date: | 1 June 2015 |
| Status: | active |
| Page Count: | 13 |
scope:
The purpose of this procedure is to specify the arrangements for the primary and secondary injection of an additional circuit of busbar protection, for a High Impedance circulating current scheme with a single (duplicated) relay per zone.
Informative: Such installations are typically in accordance with TPS 5/4 (1975) and TPS 5/11 (1991) and the modified centralised relay room installations at both 275kV and 400kV were invariably upgraded to Mk II standard.
Document History
NG CH 10
June 1, 2015
Commissioning Handbook - Primary and Secondary Injection Requirement for an Additional Circuit of High Impedance Circulating Current Busbar Protection with Single (Duplicated) Relays per Zone
The purpose of this procedure is to specify the arrangements for the primary and secondary injection of an additional circuit of busbar protection, for a High Impedance circulating current scheme...
November 1, 2006
Commissioning Handbook - Procedure Primary and Secondary Injection Requirement for an Additional Circuit of High Impedance Circulating Current Busbar Protection with Single (Duplicated) Relays per Zone
PURPOSE
The purpose of this procedure is to specify the arrangements for the primary and secondary injection of an additional circuit of busbar protection, for a High Impedance circulating current...