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ES9020 Intelligent Surge Protection Device Tester

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Varistor, discharge tube discharge voltage and leakage current measurement, insulation resistance test

Ambient temperature and humidity

23℃±5℃,below 75%rh


DC 7.2V 6 LR14 rechargeable batteries for continuous standby for more than 3 hours

Measure method

DC voltage drop method


Automatic shifting



Display mode

Color screen

Measurement indication

Text prompt in the lower right corner of the measurement (automatic mode only)

LCD size


Instrument size


Test line

Red 1 meter, black 1 meter , each 1PC

Overvoltage protection


Data storage

500 groups, “H” storage indication, “storage array” display “500” indicates that the storage is full

Data review

MR” symbol indication when viewing data

Overflow display

OL” symbol indication when overrange overflow

Qualification judgment function

The measured value has an audible indication within the range of the judgment value, and one sounds is qualified , and the unqualified sounds three times.

Battery voltage

The low battery voltage symbol indicates that the battery is promptly replaced when the battery voltage is low.

Automatic shut-down

The splash screen indicates that it will automatically shut down after 15 minutes of booting.

Power consumption

Standby: about 140mA(Lowest brightness)


Maximum brightness:about 300mA


Measure:about 830mA(Lowest brightness)


Instrument:1230g (including battery)

Working temperature and humidity

-10℃~40℃;below 80%rh

Storage temperature and humidity

-20℃~60℃;below 70%rh

Insulation resistance

More than 200MΩ(between the circuit and the housing 500V)

Pressure resistance

AC 3000V/rms(between the circuit and the housing)

Electromagnetic properties


Suitable for safety regulations

IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution level 2);

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