Wuhan GDMK Electric Co., Ltd.
https://www.mktester.com/ground-resistance-tester/clamp-type-earth-resistance-tester.html
Overview:
Clamp type earth resistance tester is a major technological breakthrough in traditional grounding resistance measurement. It is widely used in the grounding resistance measurement of electric power telecommunications meteorology oilfield construction and industrial and electrical equipment. When measuring circuit grounding system it is not necessary to disconnect the each connection wire and use auxiliary electrode it is safe and quick easy to use. Can measure the grounding fault which can not be measured by the traditional method because this instrument measure the integrated value of grounding resistance and ground lead resistance apply to the occasion that can not use the traditional method.
Specification:
Power Supply | 6VDC(4pcs 5#alkaline battery) | Working Temperature | -10?~55? |
Relative Humidity | 10%~90% | Size of Clamp | Square clamp: length 293mm width 90mm thickness 66mm |
Jaw Opening Size | Square jaw: 28mm; round jaw; 32mm | Weight (include battery) | Square jaw 1320g; round jaw 1120g |
Measurement Range Conversion | Auto | External Magnetic Field | <40A/m |
External Electric Field | <1V/m | Single Measurement Time | 1 second |
Measurement Frequency | >1kHz | Max Measurement Resolution | 0.001O |
Measurement Range | 0.01~1000O | Current Measurement Range | 0.00~30.0A |
Tested Current Frequency | 45~65Hz | Storage Capacity | 50 groups |
Setting Range of Critical Value Resistance Alarm | 1~199O | Setting Range of Critical Value Current Alarm | 1~499mA |