Dc resistance measuring instrument

HTZZ-1A Transformer DC Winding Resistance Tester

Applicable for transformer to submit the dc resistance testproject around group in pick up and overhaul project

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Product Introduction

Dc resistance measuring instrument is an indispensable test project for transformer after handing in pick up, overhaul and change sub-pick up switch. Through measurement transformer, pick up or pick upquality of outgoing line can be checked by winding dc resistance of group, whether there is short-circuit or open circuit between turns of winding group, and whether pick up contact of sub-pick up switch is good, etc. QJ44 double-arm electric bridge was used to measure the direct resistance in the past, and the measurement rementcurrent of this type of electric bridge is milliamps, so the measurement time is very long and the precision is low. In order to change this situation, shorten measurement time and reduce work burden of test staff, our company developed Dc resistance measuring instrument.

Dc resistance measuring instrument is a high precision successor to Dc single - armed bridge. Instrument adopts advanced switch power supply technology, and its measurement speed is more than 100 times faster than the bridge. The show part consists of 4-1/2 LCD LCD showmeasurement results, 3-1/2 LCD LCD showenvironment temperature or testcurrent value. It overcomes the disadvantages of other similar products, such as LED show value inconvenient reading in sunlight, and has the automatic arc extinction function. Dc resistance measuring instrument has the advantages of fast measuring speed, high precision, direct show, strong anti-interference ability, small size, low power consumption, stable and reliable testdata, free from human factors and so on. Instrument contains rechargeable battery group (14.8v), crossover and dc dual-purpose, convenient for scene and field test.

Dc resistance measuring instruments conform to the requirements of D/LT 845.3-2004 general technical conditions for resistancetest devices - part 3.

product names:Dc resistance tachometer、 Transformer dc resistance test instrument、 Transformer direct resistance speed meter、 Transformer direct resistance quick test instrument、Inductive load Dc resistance tachometer、Inductive load dc resistance rapid test instrument、Inductive load dc resistance test instrument、Dc resistance measuring instrument

Product Parameters

Technical parameters

Conditions of use Environment temperature 0℃~40℃
Relative humidity ≤85%RH
Measuring range Seven gear range 1μΩ~20mΩ
Measurement accuracy ±(0.2%+2d)
Maximum resolution 1μΩ
Constant current source 1A(1μΩ~20mΩ、20mΩ~200mΩ、0.2Ω~2Ω)
work voltage DC 12V~16.8V
AC 220V
Power ≤15W
Dimensions 365×330×180mm3
Weight 5kg(Including test clamp and test line)

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Product Characteristics

Dc resistance measuring instrument Dc resistance measuring instrument Dc resistance measuring instrument Dc resistance measuring instrument Dc resistance measuring instrument Dc resistance measuring instrument

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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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