Earth Resistance Clamp YH302
There are three models of this series, including Meter A, Meter B and Meter C, which can meet various requirements of different customers. The features are summarized in the following table.

 

 

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Test mode

Functions

Meter A

Meter B

Meter C

3 pole & 4 pole earthing-resistance test | Test voltage: AC 20V/48V | √ | √ | √ |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ | 94Hz/128Hz |
Earthing-resistance range | 0.02? ~ 300k? | 0.1? ~ 30k? | 0.1?~20k? |
Selective mode    (3 pole/4pole+ ) | Test voltage: AC 20V/48V | √ | √ |   |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ |
Earthing-resistance range | 0.02?~20k? | 0.1?~10k? |
Non-auxiliary-polar mode   | Test voltage: AC48V | √ | √ |   |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ |
Earthing-resistance range | 0.02?~150? | 0.1?~150? |
2 pole R~ | Test voltage: AC20V | √ | √ | √ |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ | 94Hz/128Hz |
Earthing-resistance range | 0.02? ~ 300k? | 0.1? ~ 30k? | 0.1?~20k? |
2 pole /4pole R   | Test voltage: DC20V | √ | √ |   |
Earthing-resistance range | 0.02? ~ 3k? | 0.1? ~ 3k? |
Interfering voltage /current/frequency | Interfering voltage: 1~50V DC/AC | √ | √ | √ |
Interfering frequency: 16Hz~400Hz | √ | √ | √ |
Interfering current: 20mA~2A | √ | √ |   |
Soil resistivityρ | Test voltage: AC20V/48V | √ | √ | √ |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ | 94Hz/128Hz |
Range: 0.02?·m~1000k?·m | √ | √ | √ |
RK(wire compensation) | Test voltage: AC20V/48V | √ | √ | √ |
Test frequency: 94Hz/105Hz/111Hz/128Hz/AFC | √ | √ | 94Hz/128Hz |
Range: | 0.02~30? | 0.1~30? | 0.1~30? |
  | Test current | ≤ 250 mA | ≤ 100 mA | ≤ 100 mA |
  | Data storage | √ | √ | √ |
  | USB communication | √ | √ | √ |
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