Special equipment for field high voltage switch maintenance and high voltage switch circuit resistance test in power supply department
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At present, the contact resistance measurements of the conventional type QJ44 arms widely used in electric power system dc bridge, and the Test of this kind of bridge current only mA level, it is difficult to find circuit conductor cross-sectional area to reduce defects, when measuring contact resistance high-voltage switch electric circuit, due to the contact between the oil film and the influence of the oxide layer, several times the measured value is big, can't reflect real contact resistance.Therefore, the standard sd301-88 ac 500kV power equipment handover and preventive test regulations and the new version of preventive test regulations for power equipment stipulate that the measuring current of circuit breaker and isolating switch contact resistance is not less than dc 100A to ensure the accuracy of test results.
The switchMicro Ohmmeter produced by Wuhan UHV is designed by combining high-frequency switch The Power supply technology and digital circuit technology in accordance with The implementation standard DL/ t845.4-2004 of new Electric Power of The People's Republic of China.The switchMicro Ohmmeter is suitable for the measurement of resistance in the circuit of switch control equipment.The instrument is accurate in measurement and stable in performance. It meets the requirements of high voltage switch maintenance and resistance test of high voltage switch factory circuit.
Product names：Contact resistance tester、 Switch Micro Ohmmeter、Contact Micro Ohmmeter, contact (circuit) resistance tester
| Measuring range | 1～1999μΩ |
| Resolution | 1μΩ |
| Test current | DC 50A、100A Two gears fixed output |
| Accuracy | 0.5%±1d |
| Way to work | continuous |
| Display | Three and a half LCD |
| Power supply | AC220V±10% 50Hz |
| Working environment | Temperature: -10℃ ~ 40℃, humidity: ≤80%RH |
| Diemension | 300×290×220 mm3 |
| Weight | 6kg(excluding attachments) |
1.The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice.In case of misappropriation or copying, legal liability will be investigated.
2.For more information about Wuhan UHV, please enter Product center . Service email：info@hvtest.cc
1、Switch Micro Ohmmeter adopts The new The power supply technology, which can continuously output large current for a long time. The switch contact oxidation film can be effectively broken through, and good test results are obtained
2、Strong anti-interference ability: under the condition of serious interference, the last bit data of LCD can be stable at ±1 word The scope of, stable reading, good repeatability
3、The switch Micro Ohmmeter has a long service life. All The switch Micro Ohmmeter adopts high precision resistance, which effectively eliminates The influence of The environment temperature on The measurement results. At The same time, The use of military connectors enhances The anti-vibration performance
4、Easy to carry: small volume、light weight
Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.
email： info@hvtest.cc
Skype： Tina Qiao
+8615172408058
