How to test the isolation discharge of the UPS battery pack?

UPS battery pack isolation discharge test method 1. First check the UPS battery pack body and the data of the switches on the power side and load side, and then proceed to the next step after there is no abnormality; 2. Place the dummy load in the corridor with good ventilation and safe evacuation Connect the standby cable to the dummy load (a DC 4P400A circuit breaker is set in the middle of the wiring cable, and the switch is in the off position) for standby; 3. Connect the dummy load control power supply to the standby switch of the corresponding voltage level for standby; 4. Confirm with the monitoring personnel through the intercom, disconnect the UPS battery pack switch, and prepare for wiring; the battery pack side shall be wired according to the planned wiring method and voltage level. Wiring personnel wear insulated gloves and use insulating tools to remove the 96 and 97 battery connecting copper bars in the battery pack, and connect the cable (120mm) connected to the dummy load phase line to the positive terminal of the UPS battery pack firmly, and to the dummy load neutral line Connect the temporary wire to the negative pole of the battery pack for backup. 5. Turn on the UPS battery pack monitoring equipment and start monitoring the data of each battery to be tested; 6. Turn on the dummy load control loop power supply and turn on the dummy load; close the middle switch of the battery test temporary line and use a multimeter to test whether the voltage at both ends of the switch is the same The battery pack voltage is the same (216V); 7. Open the dummy load test mode: select the load switch test of the corresponding power level (lower power should be selected at the beginning), and use the clamp ammeter to detect the test current carried by the cable in real time (cannot overload test) . 8. Through the test, observe the voltage drop of each battery in the UPS battery pack, whether there is a large voltage drop of individual batteries, and check the appearance of each battery. The test current should not exceed the discharge current of the battery pack C10, and the test time should be combined with the on-site battery pack voltage drop. The voltage of the single battery should not be lower than 1.85V. 9. After the test, restore the UPS battery pack wiring and switch status. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What types of anode materials for lithium batteries?