The Megger MIT1525/2 is an Advanced 15 kV insulation resistance testers is ideal for engineers and technicians performing insulation testing on transformers, motors, switchgear, and cables in environments up to 230 kV. These instruments support IR, DAR, PI, DD, SV, ramp, and PDC (with software), providing the diagnostic depth needed for condition assessment and maintenance planning.
Each model includes PI Predictor™ to speed up testing, internal memory for storing results, and optional Bluetooth® for exporting data to PowerDB or CertSuite — no manual recording required.
The new innovative patent applied Re>Act test mode allows the user to make accurate measurements by monitoring reabsorption current. This groundbreaking test mode can ensure reabsorption current does not result in incorrectly passing or failing insulation, helping to maintain safety. In addition, the test mode can be used to ensure dangerous return voltages to not occur.
The MIT1525/2 has a 15 kV test voltage. With 6 mA noise immunity and high-performance guard terminals, the Advanced range delivers reliable results where remote control and substation-level noise handling are not required.
Model Comparison Chart
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MEGGER 5 kV, 10 kV, 15kV INSULATION RESISTANCE TESTERS:
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MIT515/2
MIT1015/2
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MIT525/2
MIT1025/2
MIT1525/2
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S1-568/2
S1-1068/2
S1-1568/2
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FEATURE
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ESSENTIAL
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ADVANCED
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EXPERT
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Test capability
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High Guard Terminal performance
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IR
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IR(t)
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PI Polarisation Index
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PI Predictor
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DAR Dielectric Absorption Ratio
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DD Dielectric Discharge
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Ramp test
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RE>Act mode
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PDC test
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Test voltage
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Max. voltages available
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5 kV or 10 kV
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5 kV, 10 kV or 15 kV
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5 kV, 10 kV or 15 kV
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Charging and burn mode current
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Default maximum current
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3 mA
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3 mA
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6 mA
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User selectable max. current values
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N/A
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1 mA, 3 mA, 6 mA
(6 mA only from mains supply)
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1 mA, 2 mA, 3 mA
4 mA, 5 mA, 6 mA
(6 mA from internal battery and mains suppy)
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Noise immunity
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Max. noise current with measurement within
accuracy spec.
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3 mA
(LV and MV <45 kV)
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6 mA
(HV <230 kV)
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8 mA
(EHV <1000 kV)
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Adaptive filter
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Negative current handling
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Averaging filter
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Safety
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CAT IV 1000 V
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15 kV
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15 kV
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CAT IV 600 V
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Hazardous peak voltage detection during IR
measurement
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Data storage / features
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On board - time stamped
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Temperature value stored
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Humidity value stored
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Communications
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Test result transfer via wired USB
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Test results transfer via wireless Bluetooth LE
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Test result live streaming via wired USB
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Test result live streaming via wireless
Bluetooth LE
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Remote control via wired USB
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Display
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New custom colour display
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Accessories
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Carry all holdall
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Deeper lid pouch
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Software support
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CertSuite Asset Lite FREE
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CertSuite Asset compatible
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Power DB Lite FREE
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Power DB Advance or Pro support
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