Mengchuan Instrument Co,Ltd.
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• Bargraph to display insulation resistance. • Displays the value of external AC voltage along with flashing symbol. • Auto null function to automatically subtract the test lead resistance before displaying the real continuity resistance value. • Live circuit warning beeper. • Releasing the test button automatically discharges the charges stored in the circuit under test. • 200mA continuity measuring current to IEC 61557. • Minimum 1mA current on insulation tests to IEC 61557.
| Test voltage | 250V/500V/1000V |
| Measuring range | (Mid-scale value) 20MΩ/200MΩ/2000MΩ |
| Output voltage on open circuit | Rated test voltage+20%, -0% |
| Nominal current | 1mA DC min. |
| Output short circuit current | 1.5 mA DC approx. |
| Accuracy | ±1.5%rdg±5dgt (20MΩ/200MΩ) , ±10%rdg±3dgt (2000MΩ) |