The lightning counter can record the lightning stroke and the number of transient overvoltages in various lightning protection devices. The number of counting is two digits and the highest is 99 times. The lightning counter is installed on the grounding wire of the surge protector. The action current is + 3KA (8/20 μ s) and the highest counting power is 150KA (8/20, s).

         The lightning counter is equipped with a current transformer. When installing and using, the current transformer is inserted into the PE line of the surge protector. Two lines of the secondary coil of the transformer are introduced into the 5 and 6 terminals of the lightning stroke counter, which are firmly connected, and the number of records can be displayed by pressing the display switch.

         The lightning flow counter has 6 terminals, and 1, 2 two terminals are connected to the N and L lines to provide the operating voltage for the counter. 3, 4, two terminals, short connection can realize counter zero. 5 and 6 terminals are connected to the two lead wires of the coil of the current transformer.