1.1 General introduction

Supplied with the new type different frequency AC power supply, GDDW-III Ground Network Ground Resistance Tester adopts microprocessor to control and process signal,which solve problems of the interference between test lead wires. GDDW-III Ground Network Ground Resistance Tester is used to test grounding resistance in different places such as substation ground network(4Ω),power station,microwave station(10Ω),lightning rod(10Ω)and so on.

1.2 Technique index

Measuring range:0~15Ω

Precision:3%

Measuring current output:AC<3A

Test wires:>φ1.2mm2

Power supply:AC 220V 50Hz

Size:370*270*220mm3

Weight:5kg