Digital Megger

GM-20kV Megohmmeter

It is suitable for testing the characteristics of electrical insulation resistance in substations, power plants, remote power cables or buried cables.

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Product Introduction

With the rapid development of China power industry, electrical preventive experiment is an important aspect of electrical power system safe operation and maintenance work. Insulation diagnosis is an important tool to detect the in sulation or fault of electrical equipment

Currently, electrical equipment (such as transformers, generators, etc.) toward the trend of large capacity, high voltage, structural diversification and sealing, this requires insulation resistance tester with advantages of large capacity, strong anti-interference ability, easy to carry and so on. So we designed and developed the series meter especially for strong interference field test for large high voltage transformers, electrical appliances, remote power cables or laying cables and other electrical insulation resistance properties for high-voltage substations, power plants and others.

The instrument system combines analog circuits, digital circuits, mechanically operated advantages, achieved a leading position at the output voltage, output current, measuring range, measurement accuracy, anti-interference ability.

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Product Parameters

Technical parameters

Measurement voltage range 0.5kV、1kV、2.5kV、5kV、10kV、20kV
Measurement voltage accuracy ±(5%+10V)
Short circuit current 10mA

Measurement range and accuracy

Measurement range

Resistance measurement


20MΩ 0.01~19.99MΩ ±(5%+3d)
200MΩ 5.0~199.9MΩ ±(5%+3d)
2000MΩ 50~1999MΩ ±(5%+3d)
20GΩ 0.5~19.99GΩ ±(5%+3d)
200GΩ 5.0~199.9GΩ ±(10%+3d)
2000GΩ 50~1999GΩ ±(20%+10d)

Basic parameters

Anti-electric field interference ability 2mA(50/60Hz)
Time and alarm functions

maximum value of stopwatch is 19 minutes and 59 seconds. 20 minutes for a cycle. The stopwatch will tell the time

at these time points: 15 seconds, 60 seconds and every 60 seconds.When telling time, resistance readings hold for 3

seconds.If the measured resistance is below the lower limit of range, the reading is invalid and the instrument will

continuously sound to give an alarm.

Display three and a half bits LCD digital meter (three), respectively show test voltage, test resistance, test time.
Power supply DC: rechargeable lithium battery, DC15V power supply. With AC (50 / 60Hz) special adapter access port to charge

the battery.

Operating Conditions Temperature:-20℃~+40℃;Relative humidity:20%~90%
Dimensions 315×240×180mm3
Weight 5.5kg

1.The appearance of the product shall be subject to the actual product,technical parameters with model if there are any changes,without notice.In case of misappropriation or copying, legal liability will be investigated.

2. For more information about Wuhan UHV, please enter product center . Service

Product Characteristics Product Characteristics

Adjustable HV Digital Megohmmeter Adjustable HV Digital Megohmmeter Adjustable HV Digital Megohmmeter Adjustable HV Digital Megohmmeter Adjustable HV Digital Megohmmeter Adjustable HV Digital Megohmmeter

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Product details

Product Certificate

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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