Megger MIT1015 MIT Series Insulation Resistance Testers

Megger MIT1015 is a 10 kV insulation resistance tester from Megger's Essential range, designed for diagnostic testing and maintenance of high-voltage electrical equipment. This instrument is perfect for performing 'go/no-go' testing in tough locations where users do not need to record test results. The Essential models are available in either 5 kV or 10 kV versions.

Key Features

Feature Description

Maximum Test Voltage 10 kV

Maximum Resistance Measurement 20 TΩ

RE>Act™ Mode Enhanced accuracy and safety by monitoring reabsorption current

PI Predictor™ Function Predicts Polarisation Index in as little as 3 minutes, reducing test time by up to 50%

Noise Rejection Up to 3 mA interference rejection

Safety Rating CAT IV 600 V up to 3000 m altitude

Dual-Case Design Tough outer case with fire-retardant inner case for additional user protection

Power Supply Operates from battery or AC mains supply

Battery Type Rapid charge Li-ion battery

Technical Specifications

Insulation Testing

Parameter Specification

Fixed Test Voltages 500 V, 1000 V, 2500 V, 5000 V, 10000 V

User-Defined Test Voltage 40 V to 1 kV in 10 V steps

Resistance Range 10 kΩ to 20 TΩ at 10 kV

Resistance Range at 5 kV 10 kΩ to 15 TΩ

Short Circuit / Charge Current 3 mA

Current Range 0.01 nA to 6 mA

Current Accuracy ±5% ±0.2 nA at all voltages

Accuracy Specifications (at 23°C)

Test Voltage Accuracy Resistance Range

10,000 V ±5% Up to 2 TΩ

10,000 V ±20% Up to 20 TΩ

5,000 V ±5% Up to 1 TΩ

5,000 V ±20% Up to 10 TΩ

2,500 V ±5% Up to 500 GΩ

2,500 V ±20% Up to 5 TΩ

1,000 V ±5% Up to 200 GΩ

1,000 V ±20% Up to 2 TΩ

500 V ±5% Up to 100 GΩ

500 V ±20% Up to 1 TΩ

Test Modes

Mode Description

IR Insulation Resistance

IR(t) Insulation Resistance with Time Recording

DAR Dielectric Absorption Ratio

PI Polarisation Index

PI Predictor Predicts PI value in reduced time

Capacitance Measurement

Parameter Specification

Capacitance Range 10 nF to 25 μF

Capacitance Accuracy ±10% ±5 nF

Capacitor Charge Time <5 s/μF at 3 mA to 10 kV

Capacitor Discharge Time <250 ms/μF to discharge from 10 kV to 50 V

Voltage Measurement

Parameter Specification

Voltmeter Range 30 V to 660 V AC or DC, 45-65 Hz

Voltmeter Accuracy ±3%, ±3 V

AC Voltage (Auto-Ranging) 90 to 264 V rms, 47-63 Hz, 100 VA

Additional Features

Parameter Specification

Guard Terminal Performance Guards out current IG ≥5000× IL at 100 GΩ / 5000 V with maximum error of 1%

Insulation Test Alarm 100 kΩ to 10 GΩ

Timer Range Up to 99 minutes 59 seconds (15 seconds minimum setting)

Negative Current Handling Yes

Hazardous Peak Voltage Detection During IR measurement

Power Specifications

Parameter Specification

Battery Type 10.8 V, 5.2 Ah Li-ion, meets IEC 62133:2003

Battery Life 4.5 hours (typical) continuous testing at 10 kV with 100 MΩ load

Battery Charge Time 2.5 hours (deep discharge), 2 hours (normal discharge)