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The auxiliary power supply of the system is divided into internal power supply and external
power supply:
• When the system adopts external power supply mode, the connection port is located in
the XK1 terminal block in the PCS cabinet.
• When the system adopts the internal power supply mode, the connection port is located
in the XK2 terminal block in the PCS cabinet.
step 1 Confirm that the circuit breakers of the front and rear equipment are all off.
step 2 Pass the cable into the PCS from the cable holes.
step 3 Make sure that the AC cables are connected in the correct order.
table 5-2 Port description
Mode Mark
Description
*Recommended
specification
External power
supply
XK1–1
Connect external power
supply A1 phase
6 mm
2
XK1–2
Connect external power
supply B1 phase
XK1–3
Connect external power
supply C1 phase
Internal power
supply
XK2–1 Connected to XK1-1
6 mm
2
XK2–2 Connected to XK1-2
XK2–3 Connected to XK1-3
*The noted cable specifications are recommended values. It can be adjusted according to
actual needs.
The system defaults to internal power supply mode, shorting XK1 to XK2.
If external power supply mode is used, the wiring between XK1 and XK2 needs to
be removed and the XK1 terminal connected to the external power supply.
step 4 Wiring according to the port identification and definition. Tighten with a screwdriver with a
torque of 0.7±0.1 N·m.
- - End
5.8 BESS Auxiliary Power Supply Connection
The power cable drawn from the PCS cabinet is connected to the BESS cabinet to supply
power to the BESS cabinet. The output ports are located in the XK4 and XK5 terminal
blocks of the PCS cabinet, and the input ports are located in the AUX POWER terminal
block of the BESS cabinet.
System Manual 5 Electrical Connection
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