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Dc resistancetest around group is an indispensable test project of transformer after the submission of pick up overhaul and change of subpick up switch. In general using traditional methods (bridge method and pressure drop method) measurement transformer winding group and dc resistance of large power inductance equipment is a time-consuming and time-consuming work. In order to change this situation shorten measurement time and reduce work burden of test personnel our company developed Dc resistance rapid test instrument (hereinafter referred to as direct resistance instrument). It adopts new power supply technology featuring stable performance rapid measurement small size easy to use high measurement precision and good data repeatability. Measurement transformer is around the group and large power inductor dc resistance ideal equipment
| project | Technical indicators and parameters | note |
| Test current | 1mA，10mA，1A，5A，10A | |
| Measuring range | 1mA： 10Ω~20KΩ | |
| 10mA： 1Ω~2KΩ | ||
| 1A： 10mΩ~20Ω | ||
| 5A： 1mΩ~4Ω | ||
| 10A： 1mΩ~2Ω | ||
| measurement accuracy | ±0.2%(full range± Two digital) | |
| data storage | 255 | |
| Display | LCD | Resistance is 4 1/2 bits |
| Maximum resolution | 0.1μΩ | |
| power supply | AC220V±22V，50Hz±2Hz | insurance tube5A |
| Maximum power | 300W | Testcurrent for 10A |
| work environment | environment temperature：0℃～40℃；Relative humidity ：≤80%RH | |
| volume | 400x200x280(mm) | |
| Weight | 9kg | Without accessories |
1、Dc resistancetest adopts new power supply technology measurement is rapid volume is small and convenient to use
2、Bulk storage can storage255 groupdata
3、The typical four-line measurement method is adopted to improve the accuracy of measurement resistance(especially low resistance)
4、Built-in panel miniature printer can print measurement results in Chinese
5、 Storage results can be read and printed
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