8.2 Checking The DC Switch
DC switch does not require any maintenance
Though unnecessary, maintenance as below is still recommended:
• Check the DC switch regularly.
• Activate the DC switch 10 times in a row once a year.
Operating the switch will clean the switch and will extend the life of the DC switch.
Boot order:
1. Turn on the breaker on AC side.
2. Turn on the DC switch.
3. Turn on the breaker on DC side.
Note: If there's no switch, only need to do step 1 and step 3(please skip step 2).
Shutdown order:
1. Turn off the breaker on AC side.
2. Turn off the DC switch.
3. Turn off the breaker on DC side.
Note: If there's no switch, only need to do step 1 and step 3(please skip step 2).
8.3 Checking The Electrical Connection
1. Check if the AC or DC wire is loose.
2. Check if the earth wire is reliably grounded.
3. Check if the waterproof covers of RS485 and USB port are fasten.
Note: Maintenance cycle is once every half a year.
SDT17KW/20KW
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