Dc low resistance test instrument

HTZZ-2A 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

Transformer's dc resistance test around group is an indispensable test project for transformer after handing in pick up, overhaul and change sub-pick up switch. Through measurement transformer to coil the dc resistance of the group, the quality of the outgoing line's pick up or connected pick up can be checked, whether there is a short-circuit or an open circuit between turns when winding the group, and whether the 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 accuracy is low. In order to change this situation, shorten measurement time and reduce the work burden of test personnel, our company developed Dc low resistance test instrument.

Dc low resistance test instrument is a high-precision replacement product of Dc single-arm and double-arm electric bridge. Instrument adopts advanced switch power supply technology, and its measurement speed is more than 100 times faster than the electric bridge. The measurement result is displayed in the display part by four-and-a-half LCD liquid crystal, and the environment temperature or testcurrent value is displayed in three-and-a-half LCD liquid crystal. The instrument overcomes the disadvantage of other similar products that are inconvenient to readin sunlight by LED display value, and has the automatic arc extinction function. Dc low resistance test instrument has the advantages of fast measurement speed, high precision, intuitive display, strong anti-interference ability, small size, power saving, stable and reliable testdata, free from human factors and other advantages. Instrument contains rechargeable battery group (14.8v), both ac and dc, convenient for scene and field test.

Dc low resistance test instrument meets the requirements of DL/T 845.3-2004, general technical conditions of resistance measurement device, part 3, Dc resistance test instrument.

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 low resistance test 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 2A(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 low resistance test instrument Dc low resistance test instrument Dc low resistance test instrument Dc low resistance test instrument Dc low resistance test instrument Dc low resistance test 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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