Digital Megger

GM-15kV Megohmmeter

151/5000 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's power industry, electrical preventive test is an important link to ensure the safe operation and maintenance of power system, and insulation diagnosis is an important means to detect insulation or fault of electrical equipment.

At present, electrical equipment (such as transformers, generators, etc.) toward large capacity, high voltage, structure diversification and sealing trend of development. Therefore, the insulation resistance tester is required to have such characteristics as large capacity, strong anti-interference ability and easy to carry. For this reason, our company specially designed and developed a digital Megabyte meter for testing the characteristics of large high voltage transformers, electrical appliances, remote power cables, buried cables and other electrical insulation resistance in the high-voltage substation, power plant and other strong interference sites.

Combining the advantages of analog circuit, digital circuit and mechanical operation, the digital mew has achieved a leading position in China in output voltage, output current, measurement range, measurement accuracy and anti-interference ability.

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Product Parameters

1.product specifications

model test current Voltage accuracy short-circuit current
GM-5kV 0.1、0.25、0.5、1、2.5、5kV ±(5%+10V) 10mA
GM-10kV 0.25、0.5、1、2.5、5、10kV ±(5%+10V) 10mA
GM-15kV 0.5、1、2.5、5、10、15kV ±(5%+10V) 10mA
GM-20kV 0.5、1、2.5、5、10、20kV ±(5%+10V) 10mA

2.Range and accuracy

Range Effective range of resistance measurement Accuracy
20MΩ 0.01~19.99MΩ ±(5%+3d)
200MΩ 5.0~199.9MΩ ±(5%+3d)
2GΩ 0.05~1.999GΩ ±(5%+3d)
20GΩ 0.5~19.99GΩ ±(5%+3d)
200GΩ 5.0~199.9GΩ ±(10%+3d)
2000GΩ 50~1999GΩ ±(20%+10d)
M Ω range calibration voltage is 0.5 kV, G Ω range calibration voltage is 2.5 kV
Test current range to ensure the accuracy of the resistance measurement: above 20% voltage range nominal value
When the test current is higher than 8 kv, for accurately measuring above 20 g Ω resistance, exposed in the air of high voltage electrode conductor should be shielded, avoid air ionization effects
2000GΩthe measurement range is the reference range and is used for relative humidity less than 70% in a dry environment

3.Basic parameters

test current level 0.5kV、1kV、2.5kV、5kV、10kV、15kV
test current precision ±(5%+10V)
Short circuit current typical value10mA
anti-electric field interference ability 2mA(50/60Hz)
alarm function

The maximum value of the stopwatch is 19 minutes and 59 seconds, 20 minutes a cycle, sound alarm point for 15 seconds, 60 seconds, per minute, short sound.

Keep the resistance reading for 5 seconds, and the measured resistance is lower than the lower limit of the range. When the reading is invalid, alarm will be sounded continuously.

display table 3 1/2 LCD digital first three, respectively display test current, resistance, time.
Power supply 1.2v /2000mAh nickel metal hydride rechargeable battery 10, DC12V power supply. With an ac (50/60hz)220V connector to charge or float the battery
Working environment temperature:-20℃~+40℃ ; relative humidity:20%~90%
external dimension 315×240×180mm3
instrumentweight 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.

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Product Characteristics Product Characteristics

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/T28001-2011 occupational health and safety management system requirements.

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