- Small and light
- Lithium ion battery with ultra fast charge
- CATIV 600V rated
- Mains / line operation even with totally dead battery
- Tough dual case construction
- Fully specified guard terminal performance
- High 3mA noise immunity
- Dedicated AC/DC voltage range with frequency (Hz) measurement
- Date and time stamped test results
- User settable test voltage preset
- Measures up to 10 TΩ
- PI, DAR, DD, SV and ramp test
- Improved productivity – operate from line power/mains if battery dead
- Li ion battery - extended capacity, rapid charge
- Advanced memory with time/date stamp
Offering CAT IV, the Megger MIT525 5-kV Insulation Resistance Tester is compact, light 5 kV insulation resistance tester for the diagnostic testing and maintenance of high voltage electrical equipment. Enclosed in a tough case it is both smaller and lighter than its predecessor making it even easier to carry and store. As well as measuring insulation resitance to 10 TΩ, the Megger MIT525 5-kV Insulation Resistance Tester also offers various diagnostic tests such as Polarisation index, Dielectric Absorption Ratio, Step Voltage, Dielectric discharge and ramp testing.
Now equipped with lithium ion fast rechargeable batteries, the instrument has a large, clear, easy to read, display making it equally suitable for use in both bright sunlight and poorly lit environments. Information displayed includes resistance, voltage, leakage current, capacitance, battery status and time constant. In addition, the elapsed time of the test is displayed constantly removing the need for separate timer.
Specifications Insulation Range, Analog 100 kΩ to 10 TΩ Insulation Range, Digital 10 kΩ to 10 TΩ Test Voltages 250 V, 500 V, 1000 V, 2500 V, and 5000 V User Defined Test Voltages 100 V to 1 kV in 10 V steps,
1 kV to 5 kV in 25 V stepsAccuracy (23º C) ±5% to 1 TΩ, ±20% to 10 TΩ Voltage Output Accuracy (0ºC to 30ºC) +4% -0% ±10 V of nominal test voltage at 1 GΩ load Voltmeter Range 30 to 660 V ac or dc, 50/60 Hz Short Circuit Current 3 mA nominal, max. power on all loads outperforming many 5 mA testers Insulation Alarm 100 kΩ to 1 GΩ Current Measurement Range: 0.01 nA to 6 mA
Accuracy: ±5% ±0.2 nA at all voltagesCapacitance Range (above 500 V) 10 nF to 25 µF (dependent on measurement voltage);
Accuracy (23ºC): ±10% ±5 nFCapacitor Charge <3 s per µF at 3 mA to 5 kV Capacitor Discharge <250 ms/µF to discharge from 5000 V to 50 V Timer Range Up to 99 minutes, 15 seconds minimum setting Memory Capacity 5-1/2 hours continuous logging every 5 s.
or 33 logged PI tests
or 350 logged IR testsIndustry-Standard Tests IR, IR(t), DAR, PI, SV, DD, Ramp Test Interface USB type B (device) Real Time Output USB, 1 reading/second (voltage, current and resistance) Interference Rejection 1 mA per 250 V up to a maximum of 3 mA Guard Terminal 2% error guarding 500 kΩ leakage with 100 mΩ load Voltage Input Range 85 to 265 V, 50/60 Hz, 60 VA Battery Type Lithium-ion, 11.1 V, 5.2 A hour, meets IEC 62133:2003 Battery Life Typical capacity 6 hours continuous at 5 kV with a 100 MΩ load Ingress Protection IP65 (lid closed); IP40 (lid open) Altitude 3000 m, CAT rating maintained >2000 m (test load connected)