Surge Counters A surge counter can be installed in conjunction with an arrester to better understand system and arrester performance.

This device will include an electro-mechanical cyclometer and can come with an optional leakage current meter.

Other design variations are available for distinct applications. The counter is installed at the base or ground end of an arrester.

An insulating base is required when installing a counter. The insulating base acts to isolate the counter and base of the arrester from ground potential,

in order to read the leakage current flowing through the device