Insulators

Surge Arresters

Application

A lightning arrester/Surge Arrester is a device used on electrical power systems to protect the insulation of transformer and conductors of the system from the damaging effects of lightning. The typical lightning surge arrester has a high-voltage terminal and a ground terminal. When a lightning surge (or switching surge, which is very similar) travels along the power line to the arrester, the current from the surge is diverted through the arrestor, in to earth.

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Construction

Our lightning surge arresters are Gapless metal-oxide type, consist of Zinc-oxide Varistors, FRP Core and Silicone Housing.

Lightning Surge Arresters Accessories

S. No. ITEM QTY.
1) Disconnector 1 No.
2) Mounting Bracket 1 No.

Lightning Surge Arrester Technical Parameters

SR.NO PARAMETERS 11 kV 22 kV 33kV
1 HIGHEST SYSTEM VOLTAGE 12kV(r.m.s) 24kV(r.m.s) 36kV(r.m.s)
2 RATED FREQUENCY 50Hz 50Hz 50Hz
3 NOMINAL DISCHARGE CURRENT 5kA 5kA 5kA
4 MAXIMUM CONTINOUS OPERATING VOLTAGE 7.56 kV(r.m.s) 15 kV(r.m.s) 25kV(r.m.s)
5 PARTIAL DISCHARGE IN PICO COULOMB-pC LESS THAN 10 pC LESS THAN 10 pC LESS THAN 10 pC
6 LIGHTNING IMPULSE PROTECTION LEVEL 75 kVp 150 kVp 170 kVp
7 HIGH CURRENT IMPULSE WITH STAND AT 4/10 μs 65kV 65kV 65kV
8 ONE MINUTE POWER FREQUENCY WITH STAND VOLTAGE OF HOUSING. 28 kV(r.m.s) 50 kV(r.m.s) 70 kV(r.m.s)