Testing standards:
YD/T1235.1 Technical requirements for surge protectors for low-voltage distribution systems in communication bureaus (stations). YDT1235.2 Test method for surge protectors for low-voltage distribution systems in communication bureaus (stations) YD5098 Communication bureaus Design Specification for Lightning Protection and Grounding Engineering (YD/T1082) - Technical Conditions for Overvoltage and Overcurrent Protection and Environmental Adaptability of Connected Network Equipment GB/T 17626.5 Electromagnetic Compatibility Testing and Measurement Techniques - Surge (Impact) Immunity Test YD/T950 Telecommunications Switching Equipment - Technical Requirements and Test Methods for Overvoltage and Overcurrent Protection - Terminology and Definitions - The following terms and definitions are used in this standard. The lightning protection system is a complete set of devices for communication bureaus (stations) and their internal lightning protection and grounding systems. It consists of two parts: external lightning protection devices and internal lightning protection and grounding systems. The external lightning protection device is composed of lightning arrester, down lead, and grounding device, etc; The internal lightning protection grounding system is composed of all other additional lightning protection facilities except for external lightning protection devices. It mainly includes lightning protection devices and voltage equalization equipotential devices used for lightning protection of various operational equipment in communication bureaus (stations). Its main function is to effectively reduce lightning current of protected equipment and reduce the invasion of lightning magnetic pulses on protected equipment, Maximize the safety of personnel and equipment within the communication bureau (station). Earthing is an intentional or unintentional conductive connection that allows circuits or electrical equipment to be connected to the ground or to a larger conductive body that replaces the ground. Note: The purpose of grounding is: a. to make the conductor connected to the ground have a potential equal to or similar to that of the earth (or a conductive body that replaces the earth); b. Guiding the flow of human earth current into and out of the earth (or replacing the earth's conductive body with equipotential bonding), through reliable electrical connections, causes the potential difference between two separate conductors to approach zero
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