Objects of protection
|
Nom-
- inal volt-
- age
of a system
|
Type of surge arrester
|
Rated voltage of arrester
|
Contin-
- uous oper-
- ating voltage
of
arrester
|
1mA DC reference voltage is not less than V
|
Nom-
- inal disch-
- arge current
|
8/20us lightning impulse residual voltage
|
1/1us steep impulse residual voltage is not more than
|
1/1us impulse residual voltage is not more than
|
2ms square wave current capacity
|
Large current flow easily
|
Table 1
|