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The Megger MIT 520/2 insulation resistance tester is designed specifically to assist with the testing and maintenance of high voltage electrical equipment. It has a large easy to read backlit LCD 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 timers. Adjustable timers and limit alarms are included.
Specifications.
Voltage input range: 85-265 V rms, 50/60 Hz, 60 VA.
Test voltages: 50 V to 1 kV in 10 V steps, 1 kV to 5 kV in 25 V steps.
Accuracy from 1 MΩ @ 5000V: ±5% to 1 TΩ, ±20% to 10 TΩ.
Guard: 2% error guarding 500 kΩ leakage with 100 MΩ load.
Short circuit/charge current: 3 mA @ 5 kV.
Capacitor charge time: <3 seconds per μF at 3mA to 5 kV.
Capacitor discharge time: <120ms per μF to discharge from 5000 V to 50 V.
Capacitance measurement (above 500 V): 10 nF to 50 μF (dependent on measurement voltage).
Capacitance measurement accuracy (23 °C): ±5% ±5 nF.
Voltage output accuracy (0 °C to 30 °C): +4%, -0%, ±10 V of nominal test voltage at 1 GΩ load.
Current measurement range: 0.01 nA to 5 mA.
Current measurement accuracy (23 °C): ±5% ±0.2 nA at all voltages.
Default voltmeter range: 50-600 V ac or dc Accuracy (23 ºC) + or -2% + or -1 V.
Interference rejection: 1 mA per 250 V up to a maximum of 2 mA.
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