Wuhan Wugao Electric Measurement Co., Ltd

WD3025 Digital Insulation Resistance Meter (Digital Megohmmeter 2500V)

Digital insulation resistance tester, also known as megohmmeter, high-voltage insulation resistance meter, is used for insulation resistance testing.

This instrument has a shock-proof, dust-proof and moisture-proof structure, and is suitable for harsh working environments. It is a common and indispensable instrument for telecommunications, electric power, meteorology, computer rooms, oil fields, electromechanical installation and maintenance, and industrial enterprises that use electric power as industrial power or energy. . It is suitable for measuring the insulation resistance value of various insulating materials and transformers, motors, cables and electrical equipment, etc.

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Product Details


The digital insulation resistance meter consists of medium and large scale integrated circuits. The instrument has large output power and many output voltage levels (5 voltage levels). 

Rated insulation test voltage range:100 ~2500V.  

Insulation resistance measurement range:0.01MΩ~2000GΩ. 

DC voltage measurement range: 0~1000V

AC voltage measurement range: 0~750V. 


Insulation resistance test, voltage test

Baseline conditions

23℃±5℃, below 75%rh

Rated voltage (V)

100: 250: 500: 1000: 2500 Accuracy ±3%rdg±5dgt

Measuring voltage (V)

Rated voltage × (1±10%)

Insulation resistance range (GΩ)

0.01MΩ200GΩ Accuracy ±3%rdg±5dgt

Insulation Resistance Resolution


DC voltage range


DC voltage resolution


AC voltage range


AC Voltage Resolution


output short circuit current


Absorption Ratio and Polarization Index Measurements


power supply

1.5V (LR14) alkaline batteries 6


Controllable gray and white screen backlight, suitable for use in dark places

display mode

4-digit large LCD display, gray and white screen backlight

LCD display size


Meter size

240mm (L)×188mm (W)×85mm (H)

test line

High voltage test line red 1 meter, black 1 meter, green line 1 meter

data storage

500 groups, flashing "FULL" symbol indicates that the storage is full

Data access

Data access function: "MR" symbol display

overflow display

Overrange overflow function: "OL" symbol display

Alarm function

When the measured value exceeds the alarm setting value, an alarm prompt will be issued

Power consumption



Standby: 40mA Max (backlight off)

Turn on the backlight: 43mA Max

Measurement: 80mA Max (backlight off)


1230g (including battery)

battery voltage

The battery voltage is insufficient, and the low battery symbol " " is displayed

Automatic shut-down

The meter shuts down after about 15 minutes of inactivity

Insulation resistance

≥50MΩ (1000V)

Pressure resistance

AC3kV/50Hz 1min

Operating temperature and humidity


Storage temperature and humidity


Suitable for safety regulations

IEC61010-1, IEC1010-2-31, IEC61557-1, 5, IEC60529 (IP54), pollution, etc. 2, CAT Ⅲ 300V




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Adress:13 / F, Building 2, Hangang Science and Technology Industrial Park, Jintan Road, Wuhan, Hubei, China.