China Wholesale 33kv Substation Manufacturers – SURGE ARRESTER FORM 60KV TO 245KV – Jonchn

Feature

Zinc oxide without spark gap with synthetic cover.
•Varistors have the ability to instantly switch from an insulating state to a conductive state in the event of an overvoltage,
•The composite structure in fiberglass impregnated with epoxy resin ensures the mechanical strength of the stack,
•The outer silicone elastomer shell provides dielectric strength.
Reference standards:IEC 60099-4 – 10 kA,20kA / class 2~4， IEC 60815 – pollution level IV

Performance

Nominal discharge current:10 kA (8/20 wave)
Large amplitude current:100 kA (wave 4/10)
Rated voltage:from 60kV to 216 kV
Creepage line:> 31 mm / kV
(level IV according to IEC 60815)
Energy capacity(mim):4.8 kJ / kV from Uc (wave 4/10)
Long time current(min):600 A (wave 2 ms)
Resistance to short-circuit currents: 31.5 kA / 0.2 s – 600 A / 1 s
•High flow power,
•Lowering of the residual voltage level,
•Minimal Joule losses,
•Stability of characteristics over time
•Simple installation,
•Maintenance free.

Installation conditions

•For indoors and outdoors;
•Ambient air temperature :-40℃～+45℃
•Maximum solar radiation not exceeding 1.1kW/m2;
•Altitude not exceeding 3000m;
•Rated frequency for a.c. system : 48Hz～62Hz;
•Maximum wind velocity not over 40m/s;
•Earthquake intensity not exceeding 8 degree;
•Power-frequency voltage applied continuously between the terminals of the arrester not over exceeding its continuous operating voltage;

Parameters data

Device dimensions

(All dimensions in mm.)