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Yellow handheld insulation tester MS5205 with digital display, test leads and clips

MASTECH

MASTECH MS5205 insulation resistance tester 2500V

SKU CH-WXED-PQZM9

Tests insulation at 250, 500, 1000 and 2500 V up to 100.0 GΩ with polarisation index, absorption ratio, storage and comparison functions

  • TypeDigital Multimeters
  • Tests insulation at four voltages up to 2500 V for versatile cable checks
  • Measures resistance from 0.01 MΩ to 100.0 GΩ covering wide range
  • Calculates polarisation index and absorption ratio automatically for trend analysis
  • Stores readings and compares them to preset limits for quick pass/fail
  • Detects live voltage and sounds alarm before test starts for operator safety

2500 V insulation tester for electricians

The MASTECH MS5205 is a digital megohmmeter built for insulation resistance testing up to 2500 V. It offers four selectable test voltages of 250 V, 500 V, 1000 V and 2500 V with a measurement range from 0.01 M to 100.0 G ohm. Automatic calculation of polarisation index and absorption ratio speeds up preventive maintenance on motors, cables and switchgear.

Suited for high-voltage commissioning.

Technicians who need timed measurements, data storage and comparison functions for pass-or-fail decisions will benefit from the built-in storage and comparison features. Voltage detection with alarm and automatic discharge add safety during live-circuit verification. Users focused on low-voltage electronics, continuity-only checks or battery-powered portability without external cells should consider other instruments.

Verify test-lead rating and power source before use

Confirm that the supplied test leads and clips are rated for the maximum 2500 V test voltage your application requires. The unit ships without batteries for aviation safety, so procure the correct cells before field deployment. Ensure the automatic shutdown and low-voltage indication match your workflow expectations for unattended testing sessions.

Highlights

  • Tests insulation at four voltages up to 2500 V for versatile cable checks
  • Measures resistance from 0.01 MΩ to 100.0 GΩ covering wide range
  • Calculates polarisation index and absorption ratio automatically for trend analysis
  • Stores readings and compares them to preset limits for quick pass/fail
  • Detects live voltage and sounds alarm before test starts for operator safety

Specifications

TypeDigital Multimeters

Questions about this item

What test leads and clips are included with the MS5205 so I can start insulation testing right away?

The package includes two test leads and two test clips for connecting to the device under test.

Can the MS5205 safely test circuits that might still carry live AC voltage up to 750 V?

Yes, it features voltage detection and alarm plus line voltage detection up to AC 750 V to warn you before testing.

How do I verify the MS5205 is giving correct insulation readings after I connect the leads?

The automatic discharge function releases stored charge after each test, and the comparison function lets you check measured values against a preset limit.

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