Reasonably Select The Rated Operating Voltage Of The Surge Arrester

During the power system design or equipment configuration phase, the continuous operating voltage (Uc) of the 33kv surge arrester should be determined based on the actual voltage level of the power system. For the 33kv surge arrester price model, if its rated continuous voltage is lower than the system voltage, it is prone to malfunction or internal losses under long-term operation. If the rated voltage is much higher than the system voltage, the 400 kv lightning arrester may not operate adequately during lightning or surge events, thus failing to perform its intended function.

Determining the nominal discharge current rating of the 66 kv lightning arrester is also crucial. If the discharge current capacity of the selected device is lower than the possible peak lightning impulse current, even with voltage matching, it may fail due to discharge channel saturation. In engineering practice, estimation and matching should be based on thunderstorm intensity, local discharge current statistics, and the lightning impulse withstand level of the protected equipment.