rated voltage of arrester
rated voltage of arrester
(OP)
Hi.
i already have arrester with rated voltage is 144kv for 150kv system voltage,
how do you determine the rated voltage of an arrester for 275kv system voltage? type metal-oxide w/o gaps.
IEC60099-4, tabel 2 gives range of rated voltage 96-288(kv r.m.s) with steps of rated voltage 12kv. what does it mean?
thank you
i already have arrester with rated voltage is 144kv for 150kv system voltage,
how do you determine the rated voltage of an arrester for 275kv system voltage? type metal-oxide w/o gaps.
IEC60099-4, tabel 2 gives range of rated voltage 96-288(kv r.m.s) with steps of rated voltage 12kv. what does it mean?
thank you






RE: rated voltage of arrester
A protection marge as 1.15 is selected. This is the ratio of a voltage level and the protection voltage level.
The voltage level is the strength level of the protected device.
The protection level is:
V2 = Va (arrester voltage) + Vb (connection voltage) + 2ml/v
This is just what I remember from my notes. That may give you an idea...