Applicable for transformer to submit the dc resistance testproject around group in pick up and overhaul project
Dc resistance around the group of measurement transformer is a very important test project. In the "test regulations of electric power equipment", its order ranks the second in the transformer test project. The "regulations" stipulates that pick up, overhaul, minor repair, change sub-pick up head position, fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group, whose purpose is:
(1) check the welding of line and lead line around the group;
(2) check if the pick up touch is good;
(3) check whether there is a broken place around the group or leading line;
(4) check the correctness of the parallel branch, whether there is a few parallel guide lines winding into the winding group or a few broken line situation;
(5) check whether there is a short circuit between layers and turns.
The interface design of Dc resistance rapid test instrument adopts microcomputer control, big screen backlit Chinese liquid crystal screen show, operation is simple, show clear man-machine interaction interface friendly, measurement process and instrument work state prompt is clear and sufficient, no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology, with stable test, high measurement precision and fast speed, improving measurement efficiency and reducing work intensity of operation personnel. Technically, "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function, can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size, light weight, easy to carry.
Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer, transformer winding group and other perceptual low resistance.
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 rapid test instrument
|Measuring range||0～2000Ω(A total of six gears)|
|work temperature with humidity||0℃～40℃；≤85%RH|
|Working power supply||AC220V 50Hz (±10 %)|
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.
1、Test fast: Dc to hold rapid test instrument maximum charging current can be up to 5 a, when the measurement is effective to compensate large inductance equipment current inertia, It accelerates the core saturation, thus shortening the charging time and improving the test speed, It is hundreds of times faster than traditional instrument single and double arm bridge
2、High accuracy: Dc resistance rapid test instrument not only adopts the advanced four-terminal measurement method, but also adopts the advanced constant current power supply technology, so that the current of inductive load charging is kept at a relatively stable value, with stable sensitivity resistance and strong anti-interference ability, thereby ensuring the measurement accuracy. Besides, high-quality components imported from abroad are adopted, with high measurement result accuracy and good repeatability
3、Measuring range wide： resistance measuring range为1μΩ～20kΩ， range wide
4、Deliver dc dual-use: dc resistance rapid test instrument is attached with rechargeable battery group, deliver dc power supply, portable design, easy to use and carry
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.