HT Instruments M74

HT-INSTRUMENTS M74 MULTIFUNCTION INSTALLATION TESTER


HT-INSTRUMENTS M74 MULTIFUNCTION INSTALLATION TESTER
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Primo number :HTM74
Brand :HT Instruments
Brand number :M74




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HT-INSTRUMENTS M74 Multifunction installation tester for safety test on electrical plants and TRMS integrated multimeter M74 is one of the four multifunction installation testers belonging to MULTITEST family of portable multifunction installation testers, including M72, M73 and M75 meters designed to perform Global Earth Resistance measurements, trip out time test on AC type RCDs, Insulation and Continuity of earth conductors according to VDE and IEC standards on civil electrical installations. Powerful AUTOTEST feature permits M74 to quickly perform an automatic sequence of the above tests directly to the plugs of electrical plants with OK or NOT OK response results. M74 multifunction installation tester also includes other features as phase sequence with 1 terminal, leakage current with optional transducer clamp and a powerful DMM function for TRMS measurements of voltage and current ideal for troubleshooting both in civil and industrial environments. Voltage and current peak measurement in 1ms is also useful for inrush current evaluation of electrical motor devices. Like all models of MULTITEST family M74 has a large LCD display for easy readings, a modern and ergonomic external case, an innovative friendly-use electronic range selector as well as a protective rubber holder to prevent accidental damage. Function • Continuity test of protective conductors with 200mA • Insulation Resistance measurement with 250, 500VDC • Trip-out time of RCDs type A, AC Standard • Selectable test current; 30mA, 30x5mA, 100mA, 300mA • RCD Ramp test • Global Earth Resistance without RCD tripping • Global Earth Resistance with 0.1? resolution • Automatic test of global earth resistance + RDC test + insulation test • DC Voltage • AC TRMS Voltage • Automatic detection of AC/DC signals • AC TRMS Current with optional external clamp • AC TRMS Leakage current with optional external clamp • Resistance • Continuity test with buzzer • Frequency with test leads • Frequency with optional external clamp • Phase sequence indication with 1 or 2 terminals • Phase coincidence indication with 1 or 2 terminals • MIN/MAX/AVG functions • PEAK function with response time 1ms • HOLD function • Auto Power OFF


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