43
Item Name
A1/A2
DC input
B AC output
C External communication port
#1 / #2 PCS1/PCS2
TR Transformer
The auxiliary power supply is reserved to power the battery container, and the
power does not exceed 100kVA.
PCS1/PCS2 are connected to the low-voltage winding in MV respectively, and re-
quire attention when running in parallel.
• It is recommended that the input voltage difference of the DC battery of two
PCS units sharing a transformer in the MV system be controlled within 100V,
and excessive voltage difference will affect the performance of the parallel
system.
• It is recommended that the power dispatching mode of two PCS units sharing a
transformer in the MV system should be consistent, the charge and discharge
modes should be consistent, and the active mode or reactive mode should be
consistent. Mixing of charging and discharging, active and reactive power is
prohibited.
6.6 Ground Connection
6.6.1 Brief Introduction
The country-specific regulations and standards must be observed at all times!
6.6.2 Equipotential Connection of Internal Devices
All electrical devices inside the PCS should be connected equipotentially through the total
equipotential connection copper bar inside the PCS room, i.e. the grounding terminal of all
the main electrical devices should be connected to the total equipotential connection copper
bar. The total equipotential connection copper bar is located near the underneath of the DC
cabinet.
The connection of the internal main electrical devices to the ground copper bar has been fin-
ished before delivery. Please perform the following operations on-site:
System Manual 6 Electrical Connection
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