HYD 5-20KTL-3PH
User manual
Copyright ©Shenzhen SOFARSOLAR Co., Ltd
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There are two ways to get grid current information :
Plan A:CT
Plan B:Meter +CT(default)
The system with the current per phase less than 300A can be directly connected to
CT or electricity meter. Above 300A, only electricity meters can be used.
The default CT in the inverter packing case is used with an electricity meter. If plan
A is needed, please purchase it by yourself or contact the SOFARSOLAR technical
support personnel. In plan B, you can select different types of current transformers
based on actual conditions. You can modify the current to change ratio on the
ammeter to match, but the rated secondary current of the current transformer must
be 5A.
There are two situations when CT is installed. One is to connect in
the correct CT direction. The direction should refer to the figure
below, from the inverter to the power grid. The other one is the
random CT direction, and then the use of CT calibration function
for calibration. CT calibration procedures refer to this manual
7.3.2>>8.CT calibration.
Attention
The inverter output of HYD 5-20KTL-3PH series inverter has 4
sets of relays, which are electrically connected to the output end
R/S/T/N respectively to ensure the continuity of the electrical
connection of load R/S/T/N when the inverter is switched off the
grid.
Attention
If the Main Switch is used residual current protection device, it is
recommended to choose type A protector for RCD with leakage
current of 100mA or above (it is better to adjust according to the
size of the system).
Attention
The connected battery is in the following three situations. When a
short circuit occurs inside or outside the machine, the machine
cannot be effectively protected. Therefore, the battery connection in
the system must be connected to the fuse first and then to the input
terminal of the machine.
a.
When the battery is input, connect the lead acid battery;
b.
Lithium battery without BMS;
c.
One input is connected to multiple lithium batteries.
Caution
