Low voltage electrical appliances usually refer to electrical appliances that operate at an AC voltage of 1200V or a DC voltage of 1500V or below. Common low-voltage devices include switches, fuses, contactors, leakage protectors, and relays. When installing electrical circuits, low-voltage electrical appliances are used to connect the power supply and load (such as motors) through wires, which can achieve control functions such as load connection, disconnection, and protection
Classification
There are various types and classification methods for low-voltage electrical appliances
1. According to the action mode, it can be divided into:
(1) Manual electrical appliances - electrical appliances that rely on external force to switch directly, such as knife switches, button switches, etc (2) Automatic electrical appliances - Electrical appliances that automatically operate based on commands or changes in physical quantities, such as contactors, relays, etc
2. It can be divided into:
(1) Low voltage control appliances - mainly used in low-voltage distribution systems and power equipment, such as knife switches, low-voltage circuit breakers, etc (2) Low voltage protective appliances - mainly used for protection in low-voltage distribution systems and power equipment, such as fuses, thermal relays, etc
3. It can be divided into:
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