What are the general testing items for DC circuit breaker testing? What are the testing standards? What is the cost? The Baijian laboratory can develop test plans based on relevant standards. Conduct testing and analysis on rated voltage, maximum working voltage, rated ultimate breaking capacity, inherent working time, and other items. And provide a rigorous and fair DC circuit breaker testing report 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. Scope of application: 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 - Overcurrent Protection Circuit Breakers for Household and Similar Places - Part 2: Circuit Breakers for AC and DC Applications GB/T 10963.1-2020 Electrical Accessories - Overcurrent Protection Circuit Breakers for 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 -Common Technical Requirements for High Voltage DC Circuit Breakers for Flexible DC Systems in 2019 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 Standards GB/T 37751.31-2019 Residual Current Operated Circuit Breakers for Household and Similar Purposes Part 3-1: Special Requirements for RCD with Unthreaded Terminal Blocks for External Copper Conductors GB/T 4473-2018 High Voltage AC Breakers Synthetic Testing of Circuit Breakers GB/T 24838-2018 1100kV High Voltage AC Circuit Breakers
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
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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