Recommended Practice for the Interface of New Gas-Insulated Equipment in Existing Gas-Insulated Substations
|Publication Date:||28 September 1998|
These recommendations apply to the following cases:
a) When a gas-insulated substation (GIS) has to be connected to another GIS, in the case of a planned or unplanned extension.
b) When, in the same way, a GIS has to be connected to a gas-insulated transmission line (GIL) of another make.
In both cases, the interface is assumed to concern busbars or busducts only, and not direct connections to ÒactiveÓ devices such as circuit breakers or disconnectors.
The case of a three-phase GIS or GIL can be more complicated than the single-phase case, and should be deÞned on a case-by-case basis. However, if appropriate, more speciÞc guidelines will be added in further revisions.