A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the MEGGER MJ159 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.


   MEGGER MJ159 (212159)   Description / Specification:    
MEGGER MJ159 100/250/500/1000 V Insulation Tester

The Megger MJ159 insulation tester is designed to give rapid, accurate and direct measurement of continuity and insulation resistance of domestic and industrial wiring, cables, transformers, motors, generators electrical machinery and appliances.
It is self-powered, and is suitable for use during installation and commissioning work as well as for service and maintenance applications.

Insulation Range.
Insulation Resistance: 0.1Ω - 2000 MΩ.
Nominal Test Voltages dc: 100 V, 250 V, 500 V, 1000 V.
Accuracy: 250 V, 500 V, 1000 V +30%, -0% maximum; 100 V, +40%, -0% maximum.
Midscale: 4 MΩ.
Short Circuit Current: 1.9 mA.
Accuracy: ±1.25% of fsd on a 2.8 in. (71.1mm) arc length: [0.035 in. (0.9mm)].

Resistance Range.
Range: 0.1Ω - 5000Ω.
Open circuit Test voltage: 3 V ±0.2 V.
Short Circuit Current: 2 mA ±10%.
Accuracy: ±1.25% of fsd on a 2.8 in. (71.1mm) arc length: [0.035 in. (0.9mm)].
Maximum Load Capacitance: 1μF with less than ±0.1” pointer movement.
Discharge: Up to 1μF capacitance is discharged from 1000V to less than 42.4 V in less than 4 seconds.

Safety Voltage Check.
Voltage measurement: 0.1 V - 600 V ac; the meter is RMS calibrated and average responding.
Safety voltage indicator: Indicates the presence of dc voltages, scaling is not the same as the ac meter; true dc voltage equals scale reading divided by 2.22.
Accuracy: 2.5% of full scale.

Power Supply.
Low voltage brushless ac generator, cranking speed between 130 rpm and 170 rpm.


Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Average Power
Average power means that the energy transfer rate is to be averaged over many periods of the lowest frequency involved. For a CW signal, the lowest frequency and highest frequency are the same, so average power and power are the same. For an amplitude modulated wave, the power must be averaged over many periods of the modulation component of the signal as well.

Dynamic range
Dynamic range the ratio of a specified maximum level of a parameter, such as power, current, voltage or frequency, to the minimum detectable value of that parameter.

Modulation is the process by which the characteristic of one wave (the carrier) is modified by another.

Repeatability is the variation in a number of repeated measured quantities when measurement conditions are changed and restored. The value corresponds to half the spread between the minimum and maximum value measured.

Please contact us for your MEGGER MJ159 CALIBRATION and/or MEGGER MJ159 100/250/500/1000 V Insulation Tester REPAIR

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