DC circuit breaker detection

Material Analysis 百检检测 2023-12-29

Test items

Rated voltage、 maximum working voltage、 rated limit breaking capacity、 inherent working time、 electrical life、 number of auxiliary contacts、 external dimensions、 operating voltage、 rated current、 rated insulation voltage、 breaking overvoltage、 current setting range、 mechanical life、 auxiliary contact capacity、 installation size、 etc Applicable scope: Neutral busbar circuit breaker、 neutral busbar grounding circuit breaker、 metal circuit conversion circuit breaker、 earth circuit conversion circuit breaker、 etc Relevant Testing Standards

GB/T 14824-2021 High Voltage AC Generator Circuit Breakers

GB/T 40777-2021 Household and Similar Purpose Circuit Breakers、 RCCBs RCBO automatic reclosing device (ARD) General Requirements

GB/T 39891-2021 Electrical Durability Test Methods for Circuit Breakers of 52kV and Above

GB/T 10963.2-2020 Electrical Accessories - Circuit Breakers for Overcurrent Protection in Household and Similar Places - Part 2: Circuit Breakers for AC and DC Applications

GB/T 10963.1-2020 Electrical Accessories - Circuit Breakers for Overcurrent Protection in Household and Similar Places - Part 1: Circuit Breakers for AC Applications

GB/T 14048.2-2020 Low Voltage Switchgear and Control Equipment Part 2: Circuit Breakers

GB/T 38328-2019 Common Technical Requirements for High Voltage DC Circuit Breakers for Flexible DC Systems

GB/T 37751.1-2019 Residual Current Operated Circuit Breakers for Household and Similar Purposes Part 1: Overview of Independent and Unit Modules for Residual Current Electrical Appliances Standards

GB/T 37751.31-2019 Residual Current Operated Circuit Breakers for Household and Similar Purposes Part 3-1: Unthreaded Type with Connection to External Copper Conductors Special Requirements for RCD of Wiring Terminals

GB/T 4473-2018 Synthetic Testing of High Voltage AC Circuit Breakers

GB/T 24838-2018 1100kV High Voltage AC Circuit Breakers

Precautions for Inspection Reports

1. Report No& Ldquo; Special seal for research and testing; Rdquo; Invalid official seal、 invalid report without anti-counterfeiting QR code 2. The copied report was not re stamped; Ldquo; Special seal for research and testing; Rdquo; Or the official seal is invalid 3. The report is invalid without the signature of the main inspector、 reviewer、 or approver 4. The report is invalid if altered 5. If there are any objections to the testing report、 they should be raised within 15 days from the date of receiving the report. If the report is overdue、 it will not be accepted

The above article is a partial list. For more testing needs and details、 please consult the online consultant of the free consulting agency: 18501763637

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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 problems

inspection 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 required

Testing and testing characteristics:

1. The testing industry is fully covered、 meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. 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

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