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Handheld insulation testers allow test voltage of 10V-1,000V

11 Apr 2016  | Susan Nordyk

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The MIT400/2 series from Megger are new-generation handheld insulation testers that replace the original MIT400 series. The instruments offer a user-variable range that allows any intermediate test voltage from 10V to 1,000V in 1-V steps. They also provide feedback-controlled test voltages that limit overvoltage to 2%, rather than the industry-standard 10% to 20%.

Megger MIT400

The CAT IV 600-V rated testers, with their tight control of test voltage, can be used for a wide range of electrical and industrial applications, including cable testing, electrical installations, motor testing, automotive, ESD, avionics, and maintenance. Four models—the MIT400/2, MIT410/2, MIT420/2 and MIT430/2—enable insulation testing from 2 GΩ to 200 GΩ, depending on the test voltage. In addition, a single resistance range offers fast continuity testing from 0.01 Ω to 1 MΩ.

Other features of the MIT400/2 series include true RMS voltage measurement to 600V AC or DC with resolution from 0.1mV, continuity test currents of 200mA or 20mA, and automatic bidirectional testing without reconnecting leads. Units operate on 6AA standard or rechargeable batteries with options for AC power and car charging. They feature a redesigned case, back-stand, and six-cell battery compartment with separate fuse access. All instruments are over-moulded for increased protection and achieve an IP54 weatherproof rating.

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