When inserting the plug, the grounding pin should be connected to the grounding sleeve first, and then the current carrying pin can be energized. When the plug is unplugged, the current carrying pin should be disconnected before the grounding pin is disconnected 4.2- The size of the grounding terminal should be the same as the corresponding size of the power wire terminal The grounding terminal of detachable electrical accessories with grounding contacts should be internal The grounding terminal of a fixed socket should be fixed to the base or to a component firmly fixed to the base The grounding sleeve of a fixed socket should be fixed to the base or cover. If fixed to the cover, the grounding plug should be able to automatically and reliably connect to the grounding terminal when the cover is in its normal position. The contacts should be silver plated or have anti-corrosion and wear resistance no less than that of silver plating 4.3 In fixed sockets with grounding sleeves, easily accessible metal parts that become live when insulation fails should be permanently and securely connected to the grounding terminal
4.4 Sockets with IP codes higher than IPXO and insulated enclosures with more than one cable population, unless the grounding terminal of the socket itself is designed to connect the grounding incoming and outgoing lines together, should be equipped with an internal fixed grounding terminal or provide sufficient space for floating terminals to allow for the connection of incoming and outgoing lines to ensure the continuity of the grounding circuit The connection between the grounding terminal and easily accessible metal parts should be low resistance, and the resistance should not exceed 0.05 Ω Fixed sockets used in the connected equipment that wish to provide anti electrical interference circuits should be equipped with grounding sockets, and their terminals should be electrically isolated from any metal installation facility or other exposed conductive components that can be connected to the protective grounding circuit of the system
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