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Ground Rod

Measurement of Earth Resistance

Measurement of Earth Resistance
  • - Large scale grounding system such as mesh grounding
  • - Multiple Neutral-Grounding System
  • - Power transmission tower’s grounding
  • - Communication lines and railway grounding
  • - Cure oil/gas/chemical facilities grounding
  • - Lightning Protection Grounding
  • - Building structure grounding

Measurement of Earth Resistance

High precision measurement of soil resistivity by 4-pole Wenner’s method

Measurement of Earth Resistance

Measurement of Earth Resistance

- Range of Measurement Resolution Accuracy
UST Noise voltage 1V ... 50V DC+AC 0.1V ±(5% m.v.+5digit)
FST Indirect frequency 16 ... 400㎐ 0.1 ... 1㎐ ±(1% m.v.+2digit)
Grounding resistance 0.020Ω...300㏀ 0.001Ω...100Ω ±(2% m.v.+2digit)
RS Probe resistance 0.020Ω...300㏀ 0.001Ω...100Ω ±(2% m.v.+2digit)
RH Rod’s resistance 0.020Ω...300㏀ 0.001Ω...100Ω ±(2% m.v.+2digit)
Effective resistance 0.020Ω...3㏀ 0.01Ω ±(2% m.v.+2digit)

Measurement of Earth Resistance

Modeling of grounding system
  • - Large scale grounding system such as mesh grounding
  • - Multiple Neutral-Grounding System
  • - Power transmission tower’s grounding
Modeling of grounding system

Analysis of Grounding Potential Rise

The analysis of grounding potential rise is essential in estimating hazard electric potential and reflecting the step voltage or contact voltage for a safe design of grounding system. Also, ground potential estimation results on power system’s fault current is closely connected to the facilities’ insulating ability. Such analyses and estimations for management of electrical facilities will provide very useful information for getting a reliable grounding system in building.

Completion of grounding system design
Completion of grounding system design
The analysis of grounding potential rise is essential in estimating hazard electric potential and reflecting the step voltage or contact voltage for a safe design of grounding system. Also, ground potential estimation results on power system’s fault current is closely connected to the facilities’ insulating ability. Such analyses and estimations for management of electrical facilities will provide very useful information for getting a reliable grounding system in building.