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Accepted loads as below:
• Inductive load: The maximum starting power of the load should be less than the inverter power.
• Capacitive load: Total power <= 0.6 x nominal power of model. (Any load with high startup
current at start-up is not accepted.)
• For complicated application, please contact after-sales.
Note:
For convenient maintenance, please install a "4Pole3Throw" on back-up and on-grid
side. Then it is adjustable to support load by back-up or by grid or default settings.
1. Back-up load is supplied from back-up
side.
2. Back-up load is isolated.
3. Back-up load is supplied from grid side.
Back-Up
1
2
3
On-Grid
Grid
Load
Special adjustable setting
The inverter has a eld where the user could set functions, such as trip points, trip time, time of
reconnection, active and invalid of QU curve and PU curve. Fuctions can be adjusted through special
software. If insterested, please contact with our department of server.
Declaration for back-up function
The back-up output of ETC hybrid inverters have over load ability.
And the inverter has self-protection derating at high ambient temperature.
Under normal circumstances, the back-up switching time is less than 10 ms (the minimal condition
to be considered as the UPS level). However, some external factors may cause the system to fail
on Back-Up mode. As such, we recommend the users to be aware of conditions and follow the
instructions as below:
• Do not connect loads if they are dependent on a stable energy supply for a reliable operation
• Do not connect the loads which may in total exceed the maximum back-up capacity
• Try to avoid those loads which may create very high start-up current surges such as inverter
air-conditioner, high-power pump etc.
• Due to the condition of the battery itself, battery current might be limited by some factors
including but not limited to the temperature, weather etc.
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