I.Overview

Transformer DC resistance is the required test item of semi-finished products, finished products factory test, installation, overhaul, change after the tap switch, handover test and power department preventive test in transformer manufacturing.It  can check the welding quality of the winding joint and whether the winding has an inter-turn short circuit, which can detect whether the each position contact of the voltage tap switch is good, whether the actual position of the tap switch is consistent with the indicated position, whether the lead line is broken, whether the multiple wire and winding is broken, etc.In order to meet the needs of the rapid measurement of the transformer DC resistance. The XX50A DC resistance tester is developed by our company.The instrument uses a brand-new power supply technology, with a small volume, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and other characteristics.The whole machine is controlled by a high-speed micro controller, with a high degree of automation, with automatic discharge and discharge alarm function.With high accuracy and simple operation.It can rapidly measure the direct resistance of transformer.

II.Technical indicators

III.Features

(1)The whole machine is controlled by a high-speed micro controller, with a high degree of automation and simple operation.

(2) The instrument adopts a new power supply technology, many current gears, wide measurement range, suitable for large and medium-sized transformer DC resistance measurement.

(3) Perfect protection function, can reliably protect the impact of the reverse potential on the instrument, the performance is more reliable。

(4) Have sound and discharge alarm, with clear discharge indication, and reduce misoperation.

(5) Intelligent power management technology, the instrument total work in the minimum power state, effective energy saving, reduce heat.

(6) Seven inches of high brightness touch color LCD, clear display under strong light, full touch screen operation, free switch in Chinese and English.

(7) The instrument comes with its own lunar calendar clock and power loss storage, which can store 1,000 sets of test data and can be consulted at any time.

(8) The instrument has Bluetooth communication, RS232 communication and USB interface, used for computer communication and U disk data storage.

(9) With a panel micro printer, can print measurement results.

(10) The instrument can use Android phones or tablets, follow the wechat official account, download the special APP, control the whole process through the special software, test data storage and upload, convenient access.