Grounding downlink conduction tester is a kind of convenient tester with high degree of automation, which is specially used for testing the electrical integrity of grounding devices. Its technical indexes are up to or better than the relevant standards. This instrument has a simple and convenient operation, high precision; Fast test speed, good retest; Intuitive reading and many other advantages. Because of these advantages, power workers often take the instrument out for testing.
There are four test methods of grounding lead-off conduction tester:
The first: multimeter measurement method: use a multimeter to measure whether there is resistance value between grounding lead and grounding network or adjacent equipment. If there is resistance value, we should subtract the lead resistance, and then it is the measurement value. This method of measurement is relatively simple and easy, but the data is not very accurate.
Second: ground shake meter measurement method: this method and multimeter measurement method is more similar, but more effective.
Third: measurement grounding network grounding impedance method: everyone from all the power equipment should be connected to lead out, after access respectively tested out the corresponding measurement grounding impedance value, measurement comparison, among which the impedance value is large is poor contact. Generally, we do not choose to use this measurement method, because this method generally consumes manpower and time, the accuracy of the calculated data is not too high, and it is not easy to realize the possibility, so it is seldom used for measurement.
Fourth: special instrument measurement method: The use of double bridge principle specially made conduction measuring instrument, with this instrument can eliminate the influence of lead and contact resistance, the measured data is accurate and effective, and because the method is simple, the loss of manpower is relatively small, is currently widely used measurement method, YTC2886 grounding downline conduction tester is currently being used with high accuracy and resolution, and the effectiveness of detection is also good.
Wuhan Xinshengneng Technology Co., Ltd. specializes in the production of grounding/insulation series of test equipment, the production of a variety of products, complete models, cost-effective products, welcome to call 0312-3188565 consultation!
