Description: | |
Surge Protective Devices Tester, SPD 888 Tester is designed for on-site testing of Surge Protective Devices (SPD). It allow to measures both the Nominal Voltage and Leakage Current of different SPDs according to IEC, IEEE, ANSI standards. | |
The tester can measure both type of main component inside SPDs, including: | |
a) Voltage Limiting Type (MOV, TVS, Zener Diode ) The SPD tester injects a constant current into the component and measure the Let-Through Voltage. Then, the tester can use this voltage to find out the leakage current of the component. | |
b) Voltage Switching Type (Gas Discharge Tube, Solid Discharge Tube, Spark Gap) The SPD tester injects a constant current into the component and measure the Break Down Voltage of the component. What the tester outputs is slope of 10V/ms voltage not a constant current. |