Megger MIT1025 10kV Insulation Tester

Offering CAT IV, the Megger MIT1025 is a compact, light 10 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 (MIT 1020), making it even easier to carry and store. As well as measuring insulation resitance to 20 TΩ, the Megger MIT1025 also offers various diagnostic tests such as Polarisation index, Dielectric Absorption Ratio, Step Voltage, Dielectric discharge and ramp testing. Advanced memory storage includes time/date stamping of results, logging of data and recall of results to screen. A fully isolated USB device interface is used for safe transfer of test records to all versions of Megger’s data management. The Megger MIT1025 can be powered from the mains supply or by it’s rechargeable battery, which provides for 4½ to 6 hours of continuous testing with a 100 MΩ load, depending on model. The battery pack contains Lithium-ion cells and should be replaced when it no longer holds a charge. A new battery is available as a spare part from Megger. The battery pack is housed within a grey moulded cover secured by four screws. On no account must the transparent inner case be opened. Hazardous voltages up to 10kV will be exposed. FEATURES Measures up to 35 TΩ. Safety rated up to CAT IV 1000 V to 3000 m. Unique dual-case design - additional user protection. Operates from battery or AC mains supply. Rapid charge Li-ion battery. Advanced memory with time/date stamp. MIT515, MIT525 & MIT1025 Intro and Demo Megger MIT1025 Specifications Voltage Input Range 85-265 V rms, 50/60 Hz, 60 VA. Battery 11.1 V, 5.2 A hour, meets IEC 62133:2003. Battery Life Typical capacity 4.5 hours continuous at 10 kV with a 100 MΩ load. Battery Charge Time 2.5 hours from deep discharge, 2 hours normal discharge. 30 Min. Quick Charge 1 hour operation at 5 kV, 100 MΩ. Test Voltages 500 V, 1000 V, 2500 V, 5000 V, 10000 V. User Defined Test Voltage 5 kV to 10 kV in 25 V steps. Accuracy (23 °C) +5% to 2 TΩ, +20% to 20 TΩ. Guard 2% error guarding 500 kΩ leakage with 100 MΩ load. Display Range Analogue 100 kΩ to 10 TΩ. Display Range Digital 10 kΩ to 20 TΩ. Short Circuit Current 3 mA nominal, max. power on all loads outperforming many 5 mA testers. Insulation Alarm 10 kΩ to 1 TΩ. Capacitor Charge <5 s/µF at 3 mA to 10 kV. Capacitance Range (above 500V) 10 nF to 25 µF (dependant on measurement voltage). Capacitance Accuracy +10% +5 nF. Voltage Output Accuracy (0 to 30°C) +4%, -0%, +10 V nominal test voltage at 1 GΩ. Current Measurement Range 0.01 nA to 6 mA. Current Measurement Accuracy (23°C) +5% +0.2 nA at all voltages. Interference (Noise) Rejection 1 mA per 600 V up a maximum of 3 mA. Voltmeter Range 30 V to 660 V ac or dc, 50/60 Hz. Voltmeter Accuracy +3%, +3 V. Timer Range Up to 99 minutes, 15 second minimum setting. Memory Capacity 5.5 hours continuous logging every 5 second intervals. Test Regimes 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). Environmental Altitude 3000 m, CAT rating maintained >2000 m* * Test leads connected. Operating Temperature -20 °C to 50 °C. Storage Temperature -25 °C to 65 °C. Humidity 90% RH non-condensing at 40 °C. Ingress Protection IP65 (lid closed), IP40 (lid open). General Specifications Safety Meets the requirements of IEC 61010-1, CATIV 600 V. EMC Meets the requirements of IEC61326-1 Dimensions 315 x 285 x 181mm. Weight 4.5kg. Megger MIT1025 Warranty 2 year. HV Lead Sets Accessory Order Code HV TEST LEAD SETS (MIT525 only) 5m lead set, large size insulated clips (3 x leads). 1005-259 10 m lead set, large size insulated clips (3 x leads). 1005-260 15 m lead set, large size insulated clips (3 x leads). 1005-261 3 m lead set, medium size insulated clips (3 x leads). 1005-262 10 m lead set, medium size insulated clips (3 x leads). 1005-263 HV TEST LEAD SETS (MIT525 only) 3 x 5 m with large insulated clips. 1002-645 3 x 8 m with large insulated clips. 1002-646 3 x 10 m with large insulated clips. 1002-647 3 x 15 m with large insulated clips. 1002-648 3 x 5 m with medium insulated clips. 1002-641 3 x 8 m with medium insulated clips. 1002-642 3 x 10 m with medium insulated clips. 1002-643 3 x 15 m with medium insulated clips. 1002-644 SCREENED HV TEST LEAD SETS (MIT515, MIT525, MIT1025 only) 3m, 15kV screened, large size insulated clips, supplied in carry holdall. 1005-266 10m, 15kV screened, large size insulated clips, supplied in carry holdall. 1005-267 15m, 15kV screened, large size insulated clips, supplied in carry holdall. 1005-268 20m, 15kV screened, large size insulated clips, supplied in carry holdall. 1005-269

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