Portable Single Three Phase 20A Transformer DC Winding Resistance Meter
Portable single three phase 20A transformer DC winding resistance meter
Description
For the power system, the transformer is the core equipment in the system, so the long-term and reliable operation of the transformer is related to the stability and reliability of the entire system.
The DC resistance of the transformer is a must-test item for semi-finished products, finished products factory testing, installation, handover testing and preventive testing of the power department in transformer manufacturing. It can effectively detect the material selection, welding, loose connection parts, missing strands, broken wires, etc. of the transformer coil. Defects and hidden dangers after operation. In order to meet the need for rapid measurement of transformer DC resistance, our company used its own technical advantages to develop a transformer DC resistance tester. This instrument is a new generation of fast tester that integrates three-phase test (Yn, Y, △) and demagnetization function. It is an ideal device for measuring the DC resistance of large power transformers. The screen adopts true color high-resolution industrial display screen, full touch operation, Chinese menu prompt function, simple and intuitive operation, fast test speed, high accuracy and wide range.
Panel introduction
Connect to transformer high voltage side bushing . |
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Display size 7.0 inches; |
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The instrument must be reliably grounded. There may be paint or rust on the on-site grounding point, which must be removed. |
Turn on the power switch for about 2 seconds to start up. |
Print test results. |
An external USB flash drive is used to store test data; please use a USB flash drive in FAT or FAT32 format; during the storage process, it is strictly prohibited to remove the USB flash drive. |
Technical specification
| Output current | Single phase | 20A,10A,5A,1A,0.1A |
| Three phase | 10A+10A,5A+5A,1A+1A,0.1A+0.1A | |
| Measuring range | Single phase |
20 A level 0.5mΩ～1 Ω 10 A level 1.0mΩ～2 Ω 5 A level 10 mΩ～4 Ω 1 A level 0.1Ω～20Ω 0.1A level 2.0Ω～200Ω |
| Three phase |
10A + 10A gear 0.5mΩ ~ 0.8 Ω 5 A + 5 A level 10 mΩ ~ 1.6 Ω 1 A + 1 A level 0.1 Ω ~ 8.0 Ω 0.1A+0.1A gear 2.0 Ω ~ 80 Ω |
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| Accuracy | ±(reading×0.2%+2 words) | |
| Power supply | AC220V±10%, 50/60Hz | |
| Operating temperature | -10℃～50℃ | |
| Relative humidity | <90%, no condensation | |
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