Electrical engineering runs through the entire process of construction projects, and its construction quality directly affects the overall construction quality of the project. Therefore, effective control of the construction quality of electrical engineering is a very necessary work. After rigorous construction is completed, in order to implement the project quality and avoid unnecessary legal disputes in the later stage, building electrical engineering quality inspection is also an essential link
Firstly, there are some vague understandings in the current testing work.
&Nbsp 1. Only spot check whether the insulation value of the circuit is greater than or equal to 0.5M Ω, while ignoring the detection of the installation of the circuit in the socket (such as whether the left zero and right phases are correct, whether the connection is firm, and whether there is a lack of dedicated protective wire) When conducting electrical insulation testing, only attention is paid to the detection of insulation resistance values between phase line zero line and phase line protection line, while ignoring the detection of insulation values between branch circuit zero line protection line When conducting grounding resistance testing, only the testing points and lightning strips are tested, and the detection of repeated grounding resistance values is ignored2. Corresponding improvement detection measures:
1. Currently, in various building electrical installation projects, the quality level of installation electricians in construction units varies, and some do not even have a good understanding of the concept of "left zero and right phase". In addition, during testing, I often found that when the socket was removed, the wiring in the socket also came out, obviously due to the loose wiring. Thirdly, in many decoration projects, the construction party, for the sake of convenience or cutting corners, only connects the phase line and zero line in the socket without installing protective wires. This does not affect the use function, but there are safety hazards. Therefore, when testing insulation resistance, not only should the insulation value of the circuit be checked, but also the socket wiring should be checked to see if it meets the standard of "left zero and right phase", and the connection should be tightened to avoid heating due to poor contact and causing electrical fires. It is even more important to check whether the dedicated protective wire in the socket is in place. Although a leakage protection switch is installed, other protective measures for low-voltage power supply lines and electrical equipment cannot be removed
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