Test & Measurement


Insulation test meter and multimeter combined

13 July 2005 Test & Measurement

Comtest has introduced what it claims is the first 'true insulation multimeter'. Fluke has combined the capabilities of two frequently-used test tools - insulation test and multimeter - into one compact new tool.

The Fluke 1587 and 1577 Insulation Multimeters combine a 1 kV digital insulation tester with a full-featured true-rms digital multimeter in a single, compact, handheld device that fits easily in a toolbox or on a tool belt.

With a simple interface, the 1587 provides insulation resistance testing up to 2 GΩ, with five output voltages ranging from 50 V to 1000 V, while the 1577 tests up to 600 MΩ of resistance with either 500 V or 1000 V. A new remote test probe enables one-handed insulation testing via a trigger on the probe handle. Insulation testing is disabled if the meters are connected to a live circuit with more than 30 V. Following testing, the meters automatically discharge all capacitive voltage from the equipment under test to help prevent accidental shocks.

In addition, Fluke says the advanced circuitry of the 1587 is capable of accurately measuring voltage and frequency on variable frequency motor drive systems through a low pass filter. Such systems are increasingly common in industry, but create electrical 'noise' that baffles ordinary DMMs. Both models feature large display digits and a bright white backlight to make work easier in low-light environments.

The Fluke Insulation Multimeters are built for safety with 600 V Cat IV and 1000 V Cat III ratings and are engineered to withstand voltage spikes of 8 kV.

For more information contact Comtest, +27 (0)11 695 9162.



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