in the EPR50A (5kV, 2TΩ) ?

General Information:

EPR50A Digital insulation resistance meter also known as megohmmeter,high voltage insulation resistance tester, etc., for the insulationresistance test. The instrument has a large LCD screen gray backlit display,data storage, data access, alarm, automatic shutdown and other functions. Atthe same time, it also has the function of measuring AC voltage absorptionratio and polarization index of DC voltage. The machine is beautiful andupscale, has a wide range, high resolution, convenient operation, easy tocarry, accurate, reliable, stable performance, strong anti-interference ability.

EPR50A has a shockproof, dustproof, moisture-proof structureand is a commonly used and indispensable instrument for telecommunications, electricity, meteorology, computer rooms, oil fields, electromechanical installationand maintenance, and industrial enterprises that use electricity as industrialpower or energy. It is suitable for measuring the resistance value of variousinsulating materials and the insulation resistance of transformers, motors,cables and electrical equipment.

EPR50A Digital insulation resistance meter consists of medium and large-scale integrated circuits. This meter has high output power and many output voltages levels (there are 6 voltage levels). The rated insulation testvoltage range is 250V 5kV, and the insulation resistance measurement range is 0.01MΩ 2000GΩ. DC voltage measurement range is 0 ~1000V, AC voltage measurement range is 0 ~ 750V.

Measuring Range and Accuracy:

Test Function

Insulation resistance test, voltage test


23°C±5°Cbelow 75%rh

Rated voltage (V)

100V, 250V, 500V, 1000V, 2500V, 5000V


Measuring voltage(V)

Rated voltage×1±10%

Insulation Resistance Range



Insulation Resistance Resolution


DC voltage range


Resolution 0.1V

AC voltage range


Resolution 0.1V

Output short circuit current


Absorption Ratio and Polarization Index Measurement


Power Supply

12V rechargeable battery


Controllable gray screen backlight, suitable for use in dim places

Display mode

4-bit large LCD display, gray screen backlight

LCD display size


Instrument size

227.2mm (L)×227.5mm (W)×153mm (H)

USB interface

With USB interface, software monitoring, storage data can be uploaded to the computer, save the print

Communication Line

USB communication line 1PC

Test Line

High voltage robs red 3meter, high voltage test line black 1.5meter, green 1.5meter

Data Storage

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

Data Review

Data review function: "READ" symbol display

Overflow Display

Exceed measurement range overflow function: “OL” symbol display

Alarm Function

Alarm when the measured value exceeds the alarm setting value

Power Consumption

Standby: 30mA Max (backlight off)

Turn on backlight: 42mA Max

Measure200mA Max (backlight off)

Instrument weight

2350g (including battery)

Battery voltage

When the battery voltage is low, low battery symbol “ ” will display

Automatic shut-down

automatic shutdown after 15 minutes boot

Insulation Resistance

≥50MΩ (between Measuring line and shell)

Pressure Resistance

AC3kV/50Hz 1min

Working Temperature and Humidity


Storage Temperature and Humidity


Suitable for Safety Regulations

IEC61010-1, IEC1010-2-31, IEC61557-1,5, IEC60529(IP54), Pollution grade 2, CAT III 300V