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 3150A 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