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 MIT320 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.


   MEGGER MIT320   Description / Specification:    
MEGGER MIT320 250, 500, 1000 V Insulation Tester

The Megger MIT320 features the popular Megger digital/analogue display. Large 20mm high characters provide very clear readout, combined with an analogue arc for the feel of an analogue instrument, with a true analogue response.

Insulation ranges
Nominal Test Voltage: 1000 V, 500 V, 250 V (d.c.).
Measuring Range: 10 kΩ - 999 MΩ on all ranges.
Short Circuit Current: 1.5 mA nominal.
Test Current on Load: 1 mA at min. pass values of insulation (as specified in BS7671, HD 384 and IEC 364).
Accuracy (at 20 °C): ±3%, ±2 digits up to 10 MΩ, ±5% up to 100 MΩ, ±30% up to full scale

Continuity ranges
Measuring Range: 0,01 Ω - 99,9 Ω (0 -50 Ω on analogue scale).
Open Circuit Voltage: 5 V ±1 V.
Short Circuit Current: 205 mA +10 mA -5 mA.
Accuracy (at 20 °C): ±3% ±2 digits.
Measuring range: 0 - 2/20/200/2 kΩ.
Open circuit voltage: 1.5 V +/-0.5 V.
Zero Offset Adjust: 0 - 9 Ω.
Continuity Buzzer: Adjustable 1 Ω to 20 Ω.

Resistance range
Measuring Range: 10 Ω - 1 MΩ.
Open Circuit Voltage: 5 V.
Short Circuit Current: 1.5 mA.
Accuracy (at 20° C): ±5% ±2 digits up to 100 kΩ.

Default voltmeter all modes except off: >25 V a.c. or d.c. is applied display will operate as a voltmeter.
Test inhibit: If more than 50 volts is detected, testing will be inhibited.


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

dBm (sometimes dBmW) is an abbreviation for the power ratio in decibels (dB) of the measured power referenced to one milliwatt (mW). Zero dBm equals one milliwatt. A 3 dB increase represents roughly doubling the power, a 3 dB decrease, the power is reduced by about one half.

Millimeter-wave is a term that generally refers to frequencies of 26.5 GHz and above. That is where signal wavelengths fall below approximately 10 mm, and thus the terminology changes from centimeters to millimeters.

Power Repeatability
Power Repeatability is the random uncertainty in reproducing the power level after changing and re-setting the power level. The power repeatability is ± half the span (in dB) between the highest and lowest actual power. Note: - The long-term power repeatability can be obtained by taken the power repeatability and power stability into account.

Stability is the extent to which a specified property, characteristic, or parameter of a substance, device, or apparatus, remains fixed with the passage of time or with varying environmental conditions.

Please contact us for your MEGGER MIT320 CALIBRATION and/or MEGGER MIT320 250, 500, 1000 V Insulation Tester REPAIR

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