1productOverview：
The DC resistance of transformers is a necessary measurement item for semi-finished and finished products in transformer manufacturing, factory testing, installation, major repairs, changes to tap changers, handover testing, and preventive testing by power departments. It is possible to check the welding quality of the winding joints and whether there is a turn to turn short circuit in the winding. It can also detect whether the contact of the voltage tap changer at various positions is good and whether the lead wire is broken. It can also check whether there are broken wires when multiple wires are wound together. This instrument adopts a new power technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and complete protection function. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and automatic discharge and discharge alarm functions, ensuring safety and reliability. The instrument has high testing accuracy, easy operation, and can achieve rapid measurement of transformer DC resistance.
IIproductFeatures：
1、The whole machine is composed ofhigh-speedSingle chip microcontroller control, automaticHigh degree of transformation,Easy to operate.
2, submit/Both DC working modes can be used on site with or without mains power.
3、Adopting new power technology,Multiple current levelsWide measurement rangeThe test current can be automatically selected based on the load.
4ProtectingComplete protective functions and more reliable performance.
5It has a discharge sound alarm, clear discharge indication, and reduces misoperation.
6、Fast response speed,Stable measurement data, during the testing processAuto Refreshdata.
7、Intelligent power management technology effectively reduces internal heating of instrumentsSave energy.
8A non power down clock and non power down memory that can permanently store data.
9Thermal printer, high-speed and silent.
three、producttechnical indicators：
1、Output current: automatic10AThe5AThe1AThe200mAThe40mAThe<5mA
2、Resolution:0.1μ Omega
3、Range: 100Oh!100KΩ (<5mA档）
1Oh!250Ω （40mA档）
100mOh!50Ω (200mA档)
5mOh!10Ω (1A档)
1mOh!2Ω (5A档)
0～1Ω (10A档）
0～100KΩ (automatic transmission)
4、Accuracy: 0.2%
5Working power supply:AC：220VOr the instrument comes with an internal power supply (rechargeable battery)
6、Operating Temperature-10～40℃
7、Working humidity:<80%RHNo condensation
