DC panel debugging method:

1. First check whether the primary and secondary circuit wiring is correct - mainly to check fatal errors, such as the weak point interface is connected to strong power, the DC signal should be connected but the AC signal is connected, and there is a short circuit problem.

2. Avoid the above reasons, disconnect all circuit breakers and fuses, connect the AC power supply, test whether the AC dual power switching device works normally, and whether the lower port voltage of the dual power switching device is normal.

3. After the AC part is tested normally, close the AC switch of the charging module in turn, observe whether the module starts normally and measure the module output voltage and polarity.

4. After the charging module starts normally and the output voltage and polarity are correct, turn on the battery pack switch and each bus switch, measure the voltage and polarity of the battery pack switch bottom port, closing bus, and controlling bus, and observe whether the voltage meter is overturned.

5. Turn on the feed switch once, and measure the terminal voltage and voltage polarity corresponding to the feed switch respectively.

6. The above content is the debugging of the primary circuit. After the above steps are measured and debugged, turn on the monitoring power supply.

7. After the monitoring is powered on, observe whether the monitoring display is normal and whether each detection module is working normally.

8. After the monitoring device is powered on normally, first check the alarm information on the monitoring display. If there is an alarm message, find the relevant problem according to the alarm message. If not, check the voltage value displayed by the monitoring device, the current value with load, the switch quantity information, etc.

9. After checking and testing the main analog and switch information on the monitor, start testing the insulation alarm of the DC bus and the branch grounding resistance. Generally, the 220V system can be tested with a 25-100K resistor, and the 110V system can be tested with a 7-100K resistor.

10. Battery inspection test. It is best to connect all the batteries of the specified number of routes to the battery inspection to test the overall performance. If the on-site conditions are not enough, you can take a single battery and test it in turn.

So far, the debugging is complete. The rest is to check whether the components are installed and tightened, whether the wires and components are loose, and whether there are process problems.