The battery pack is an independent and reliable operating power source that is not affected by AC power, and can still ensure continuous and reliable operation even in the event of a power outage or bus short circuit in the entire factory. The battery voltage is stable and the capacity is large. It is not only suitable for various complex relay protection and automatic devices, but also for the transmission of various circuit breakers. Therefore, large enterprise substations commonly use battery packs as operating power sources. However, battery pack operating power requires many auxiliary equipment and dedicated rooms, with high investment, short service life, long construction time, complex operation, and high maintenance workload, Therefore, in small and medium-sized substations, battery packs are generally not used as operating power sources, and rectifier type DC operating power sources or AC operating power sources are often used
The working mode of a battery pack
There are charging, discharging and floating charging working modes for a battery pack, usually using floating charging working mode.
. Because the floating charge current not only compensates for the self discharge loss of the battery pack, but also carries a portion of the DC load, it can keep the battery pack in a fully charged state. Only at the moment of closing, can the battery pack provide large current. This working method is widely used because it does not require frequent charging and discharging, prolongs the service life of the battery, and reduces the workload of operation and maintenanceFunction 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