Detailed Product Description

JS-8 Discharging counter

1.Summary
JS8,JS8A discharging counter(here in after short for counter) is connected under the arrester in serial it's used for recoding the operation times of arrester,JSB tye is applied for 6kv-22kv arrester,and JS8A is used for valve tyoe arrstor with 330kv and/or above,the environment condition shall meet the requirement required by arrester,for example,the altitude doesn't exceed 4000m,the environment temperature is 0^oC~+ 40^oC.This counter can't be put in the place that includes gas eroding metal and insulation parts,serious pollution and drastic vibration.

2.Structure and characteristic

Discharging counter is made up of valve element,silicon bridge type rectifier,capacitor,electromagnetic counter and so on,i makes use of the arrester energy(surge current and power frequency current) to fetch the voltage on valve element(nonlinear resistance),then it charges to the capacitor in single direction through silicon bridge type rectifier,makes the coils of electromagnetic counter discharge with form of DC power to move the counter,thus,it can realize that the operating times can be recorded.