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Problems During Operation
ETC does not start up with only battery
High power uctuation on battery charge or discharge:
Battery does not charge:
Q: Why does the battery SOC suddenly jump to 95% on the Portal?
Q: How to activate Output Power Limit function?
Q: Why is there still power exporting to grid after I set power limit as 0W?
Q: Why battery switch always trip when it starts up (Lithium battery)?
Solution:
Make sure the voltage of battery is higher than 200V, otherwise battery cannot start ETC up.
Solution:
Check if there is a uctuation on load power.
Solution:
1. Make sure BMS communication is OK on the LCD screen.
2. Make sure the CT is connected in the right position and to right direction.
3. Make sure the total load power is much higher than PV power.
Questions & Answers (Q & A)
About Battery Operation
About Smart Meter and Power Limit Function
This normally happens on when BMS communication fail on lithium. If battery enter oat charge,
SOC will be reset to 95% automatically.
A:
For ETC system, the function could be realized by:
1. Make sure Smart Meter connection and communication are well.
2. Turn on Export Power Limit function and set the max output power to grid on App.
A:
Export limit could theoretically be 0W, but there will be a deviation of around 0-500W for ETC
system.
A:
Note: Even if output power limit is set to 0W, there might still be a deviation of a max of 500W
exporting to grid.
The switch of lithium battery normally trips for following reasons:
1. BMS communication fails.
2. Battery SOC is too low, battery trips to protect itself.
3. An electrical short-cut happened on battery connection side. Or other reasons please contact
with our department of server for details.
A:
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