Megger MIT480 / MIT481 / MIT485 CAT IV Insulation Testers

The Megger MIT400 series insulation and continuity testers have been designed for electrical testing by power utilities, industrials, telecommunication companies, commercial/domestic electricians and anyone with unique test voltage requirements. The wide range of features also makes the MIT400 ideal for maintenance technicians and engineers. They replace the well-established BM400 insulation tester range, giving greater functionality with simplified operation, greater application range and increased safety.

Designed to cope with the additional requirements of the telecommunications industry, MIT Models 480, 481 and 485 include 50 V and 100 V range insulation testing as standard, plus higher voltages as required. In addition, the voltage detection test inhibit feature has been raised to 75 V (from 50 V), to allow testing of cables with coactivity coupled induced voltages, which would normally inhibit such testing with a 50 V protected instrument. Finally the MIT481 and MIT485 models include measurement of cable distance by capacitance, providing a convenient cable length without the need to use TDR technology, with adjustable cable capacitance from 40 nF/Km to 60 nF/Km (default is 50 nF/Km).

The MIT400 Series instruments are designed to meet all of the requirements of IEC1010-2 and EN61557 and meets the safety requirements for use on CAT IV 600 V. Also, fast detection circuitry prevents damage to the instruments if accidentally connected to live circuits or across phases.

Specific safety features include:

• Any live circuit detection inhibits any insulation testing on circuits above 50 V (75 volts on Telecom models)
• Any live circuit detection and test inhibit on continuity measurements
• Default display of live circuit voltage on all ranges
• Detection and inhibit features function even if the protections fuse has failed

The MIT480, MIT481, and MIT485 are designed for telecommunication testing.

Applications for the Megger MIT480, MIT5481, and MIT485:

• 75 V live circuit inhibitn Cable length by capacitance measurement (Models 481 & 485)
• Cable distance in feet or km (Model 481 & 485)
• Extensive results storage capability – store test date for later recall (models 481 & 485)
• Bluetooth download capability - wireless transferof stored results to a PC
• Building/Campus electrical maintenance
• Large and small scale electrical installations
• Periodic electrical systems inspection and testing
• Cable testing