Test method for grounding continuity resistance tester
(1) The method for measuring the grounding impedance of the grounding grid. In theory, as long as the grounding impedance of the same grounding device is constant, it can be measured offline from any equipment grounding. Measure the grounding resistance values of all power equipment grounding down conductors separately for comparison and judgment. The larger one has poor contact. This method is too labor-intensive and time-consuming to implement, and its accuracy is not high, so it is rarely used now (2) Multimeter measurement method. The multimeter measures the resistance between the grounding down lead and the grounding grid, or between the grounding down leads of adjacent equipment, subtracting the wire resistance to obtain the measured value. The advantage of this measurement method is simplicity, but the disadvantage is that it is not very accurate
(3) Measurement method using a ground sway meter. This method is similar to the multimeter measurement method, but more effective than that (4) Special instrument measurement method. The conductivity measuring instrument specially manufactured using the double bridge principle can eliminate the influence of wires and contact resistance, and conduct measurements more accurately and effectively. Currently, a grounding continuity resistance tester is used, with an accuracy of level 1 and a resolution of 1m2. This method is currently widely adopted. The effectiveness of the detection is very high
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China