Megger MIT1525 15 kV Diagnostic Insulation Resistance Tester

The latest in the range of megger HV insulation testers, the Megger MIT1525 15kV insulation tester has a top end specification. It has a full suite of test modes, advanced memory with time/date stamp and the ability to record temperature (measured with independent thermometer) and on-board storage with a capacity to log up to 5.5 hours of data saved every 5 seconds. Downloading of saved results, logs and real-time streaming of results is possible via a USB cable interface. The Megger MIT1525 15kV DC insulation testers are equally well suited for motor / generator production and repair as they are for low and medium voltage substation use. Transformer OEMs and repairers will benefit from the 15 kV test voltage and the extensive capabilities of the MIT1525. As well as measuring insulation resistance to 30 TΩ, the Megger MIT1525 also offers various diagnostic tests such as Polarisation index, Dielectric Absorption Ratio, Step Voltage, Dielectric discharge and ramp testing. It benefits from the Megger dual case construction, tough on the outside and fire retardant on the inside. 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. FEATURES Measures up to 30 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. CATIV 600 V safety rating. Megger MIT1525 Specifications AC Voltage 5 kV, 10 kV: 90 to 264 V rms, 47 to 63 Hz, 100 VA 15 kV: 90 to 264 V rms, 47 to 63 Hz, 200 VA. Battery Charge Time 2.5 hours deep discharge 2 hours normal discharge. Battery Life 4.5 hours typical continuous testing at 15kV with a 100 MΩ load. Test Voltages 1000 V, 2500 V, 5000 V, 10000 V, 150000 V. Lock Test Voltage 100 V to 1 kV in 10 V steps 1 kV to 5 kV in 25 V steps 5 kV to 15 kV in 25 V steps. Test Voltage Accuracy +4%, -0%, +10 V nominal test voltage at 1 GΩ load (0 to 30 degrees C). Resistance Range 10 kΩ to 15 TΩ @ 5 kV, 10 kΩ to 20 TΩ @ 10 kV, 10 kΩ to 30 TΩ @ 15 kV. Guard Terminal Performance Guards out parallel leakage resistance down to 250 kΩ with a maximum additional resistance error of 1% with a 100 MΩ load. Display Analogue: 100 kΩ to 10 TΩ Digital: 10 kΩ to max a above. Short Circuit/Charge Current 3 mA@5 kV, 10 kV, 15 kV. Insulation Test Alarm: 100 kΩ to 10 GΩ. Capacitor Charge <3500 ms/µF to discharge from 15000 V to 50 V. Capacitance Range 10 nF to 50 µF. Capacitance Measurement Accuracy +10% +5 nF. Current Range 0.01 nA to 6 mA. Current Accuracy +5% +0.2 nA at all voltages. Voltmeter range 30 V to 660 V a.c. or d.c., 45 Hz - 65 Hz. Voltmeter accuracy +3%, +3 V. Timer range Up to 99 minutes 59 seconds, 15 second minimum setting. Memory capacity 5.5 hours logging @ 5 sec intervals. Test modes IR, IR(t), DAR, PI, SV, DD, Ramp test. Interface USB type B (device). Real time output 1 Hz output readings (V, I, R). Operating temperature -20 °C to 50 °C. Storage temperature -25 °C to 65 °C. IP rating IP65 (lid closed), IP40 (lid open). Dimensions (L)360 mm x (W)305 mm x (H)194 mm. Weight 6.5 kg. Megger MIT1525 warranty 2 years.

For more information on Megger MIT1525 15 kV Diagnostic Insulation Resistance Tester talk to Cuthbertson Laird Group