1.1 Application
GDDW-grounding resistance tester is applied to measure the grounding resistance in power station or generator station with non-power frequency. All test results
could be printed by micro printer
1.2Technique index
1.Measurementscope:0~150Ω(includingimpedanceofcurrentpile)
2.Resolution:.001Ω
3.Measurementerror:±(reading×2%+0.005Ω)
4.Maximumoutputvoltage:AC400V(45Hz,55Hz,doublefrequency,sinewave)
5.Maximumoutputcurrent:AC5A(45Hz,55Hz,doublefrequency,sinewave)
6.Currentoutputgears:5/4.5/4/3.5/3/2.5/2/1.5/1A,onegearevery0.5A,totalling9gears.
7.Anti-jammingcapacity:powerfrequencyresistance50Hzvoltage10V
8.Requirementformeasuringline:
Sectionalareaofcoopercoreofcurrentline≥1.5mm2
Sectionalareaofcoopercoreofvoltageline≥1.0mm2
9.Electricpowersupply:AC220V±10%,50Hz
10.Contourdimension:440×350×210mm3
11.Instrumentweight:30kg