Maintenance, Test & Measurement, Calibration

HellermannTyton’s TBM878 multimeter, insulation and earth continuity tester

March 2018 Maintenance, Test & Measurement, Calibration

The TBM878 Multimeter 3 in 1, is a true RMS digital multimeter with the added functionality of an insulation tester and earth continuity tester combined into a single, compact, handheld unit. This multipurpose CATIV 600VV unit provides maximum versatility for compliance testing, troubleshooting and preventative maintenance.

The TBM878 has the ability to determine the state of insulation material and earth continuity. Furthermore, it has a convenient remote probe that inhibits testing on live circuits and hands-free lock feature for continuous testing.

The instrument offers five test voltages: 50, 100, 250, 500 and 1000 V in order to measure resistance levels from 0Ω to 25 GΩ for insulation as well as 200 mA high current test for earth continuity. The true RMS of the TBM878 is ideal for non-sinusoidal waveforms of complex voltage or current signals and has an intelligent auto power off function to extend battery life. Additional features include:

• Beep-jack – beeps against improper terminal plug in (decreases risk of damage).

• VFD V & Hz (variable frequency drives) measures fundamental voltage and frequency of most variable frequency drives.

• Smooth mode – smooth out unstable insulation resistance readings.

• X-Speed capacitance – measures up to 30 mF in only a few seconds, 1 kV protection.

• LCD Display (counts) – 6000.

• Analog bar graph.

• REC – recording max, min, max/min and avg.

• Splash and dust proof..

• Certification – UL, IEC610010-1.

• Temperature -50 to 1000°C.

Applications include CoC testing, motors, generators, cables or switch gear.

For more information contact Ryan Burger, HellermannTyton, +27 (0)11 879 6658,,


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