The Megger MIT1020/2 is a 10 kV DC insulation resistance tester engineered for high-voltage diagnostic assessment of electrical equipment. It delivers expanded test voltage range and measurement capability up to 35 TΩ, making it suitable for utilities, service companies, and industrial maintenance programs—particularly for motor winding evaluation per IEEE 43-2000.
– Technical Specifications
Voltage and Current
• Test voltage range: 50 V DC to 10 kV DC
• Voltage increments: 10 V (50 V–1 kV); 25 V (1 kV–10 kV)
• Short-circuit current: 3 mA
Insulation Resistance Measurement
• Maximum range: Up to 35 TΩ
• Accuracy at 23°C, 10 kV: ±5% (1 MΩ to 2 TΩ); ±20% (2 TΩ to 20 TΩ)
• Guard terminal included for leakage measurement enhancement
Capacitance and Leakage
• Capacitance measurement: 10 nF to 50 µF
• Leakage current display during testing
• Time constant measurement available
Power and Battery
• Mains input: 85–265 V RMS, 50/60 Hz
• Internal rechargeable battery with ~4 hours runtime at 10 kV, 100 MΩ load
• Battery level indicator on LCD
• Automatic discharge of capacitive energy after test completion
– Key Features
• Polarization Index (PI) and Dielectric Absorption Ratio (DAR) tests automatically calculated
• Step Voltage (SV) test with adjustable parameters
• Dielectric Discharge (DD) assessment for insulation degradation analysis
• Configurable alarm limit mode for insulation resistance thresholds
• Burn/breakdown testing option in IR mode
• 32 kB internal memory for test result storage (voltage, test time, leakage current, resistance)
– Typical Applications
• High-voltage motor winding diagnostics
• Predictive and preventive maintenance programs
• Industrial electrical equipment assessment
• Utility and service company testing
– Compatibility & Integration
Internal data logging enables trend analysis over time without external software dependency.
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