Earth/Ground Tester
Specifications
Measurement of Interference Voltage DC + AC (UST)
Measuring method: | fullwave rectification |
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Measuring |
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| Resolu- | Frequency |
| Limits of Er- |
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Range |
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1…50 V |
| 0.0…50 V |
| 0.1 V |
| DC/AC |
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| ± (5% of |
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| 45…400 Hz |
| reading +5 |
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| sine |
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Measuring sequence: | approx. 4 measurements /s |
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Internal resistance: | approx. 1.5 MΩ |
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Max. overload: |
| Urms = 250 V |
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Measurement of Interference Frequency (FST) |
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Measuring method: | Measurement of oscillation period of the interfer- |
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Measuring | Display Range |
| Resolution | Range |
| Limits of |
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Range |
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16.0 … 400 | 16.0…299.9…99 |
| 0.1 … 1 Hz | 1 V … |
| ± (1% v. mv |
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Hz | 9 Hz |
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| 50 V |
| +2 digit) |
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Earthing Resistance (RE) |
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Measuring method: |
| current and voltage measurement with probe |
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Open circuit voltage: |
| 20 / 48 V, AC |
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Short circuit current: |
| 250 mA | AC |
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Measuring frequency: |
| 94 , 105 , 111 , 128 Hz selected manually or |
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| automatic.(AFC) 55 Hz in function R* |
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Noise rejection: |
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| 120 dB ( 16 2/3, 50 , 60, 400 Hz ) |
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Max. overload: |
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| Urms = 250 V |
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