ABB CB 1

[prismpower]

hello,

I am in the stage of taking over a 36KV switchgear feeding transmission lines. I've noticed that the model number of the CB from ABB is starting with HX/B-E.....the name plate is saying its an SF6 CB, but what i know that ABB has the HD4 CB. i searched google for that number but i find nothing! does anyone has an idea?

BTW: the operating sequance is O-3min-CO-3min-CO. is that sequance adjustable by the protection relay for auto-reclose operation?

cheers.

 

[jyj982001]

Normally the time for the autoclose operating sequance of CB can be different from that for the manual operation.It's recommended that u refer to ABB local service for details of such type of CB.after all the electrical arc extinguishing maybe different from type to type .