KM 1152MF Digital Multifunction Insulation Resistance
Resistance Testing, Polarisation Index measurement & Die electric Absorption ratio measure...
The Polarization Index is the ratio of the insulation resistance measured at 10 minutes divided by the insulation resistance measured at 1 minute. One minute after starting a test, the resistance value is saved & the DAR is displayed. The test then continues, & after 10 minutes, the tester will…
| 4 Insulation test voltages | 500V, 1000V, 2500V, 5000V. - AC / DC Voltmeter. - Short-circuit current up to 5mA PI (Polarization Index) indication.- - DAR (Dielectric Absorption Ratio) indication. - Auto-ranging on all insulation ranges. Optical USB to RS-232 data transmission- Well isolated from contact- Well protected from surges.- 2 built-in optical LEDs for data transfer.- Visual & audio warning of external voltage presence (>30Vac or >30Vdc)- Auto-hold function to freeze reading - Overload protection- Adjustable testin… |
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| Accessories | User Manual, Test leads, Data transmission cable CA-232, Alligator clip, PC interface CD , Batteries & Carrying case.. |
| Resolution | 1000MW : 1MW; 10GW : 0.01GW 100GW : 0.1GW; 1TW : 1GW 10TW : 10GW |
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| Voltmeter | AC Voltage : 30 ~ 600V (50/60Hz); DC Voltage : 30 ~ 600V Accuracy : ±(2.0%rdg + 3dgts); Resolution : 1V |
| Current Measurement | 0.5nA ~ 0.55mA (Depending on the insulation resistance) |
The Polarization Index is the ratio of the insulation resistance measured at 10 minutes divided by the insulation resistance measured at 1 minute. One minute after starting a test, the resistance value is saved & the DAR is displayed. The test then continues, & after 10 minutes, the tester will beep again, indicating that the PI result has been computed. The display format changes to display the PI result. Tests on lower insulation resistance take longer, which tends to deteriorate the trest specimen. Thus, higher DAR or PI readings (closer to 1) would indicate a better grade of insulation.
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