PowerMagic 400V C&I Energy Storage System User Manual
Non-grid-connected but
trouble-free operation
Abnormalities in grid
phase, frequency,
amplitude; phase loss,
unbalance
DC-side faults, grid-
side faults, and alarms
generated by the PCS
itself
Table 6.3 High voltage box indicator status information
Main contactor closed, manual switch QB2
disconnected
BMS system powered, main contactor not closed
The BMS system is powered, the main contactor
is closed, the manual switch QB2 is closed, and
the prompt can disconnect the manual switch
QB2
System malfunction shutdown, relays are
disconnected
No auxiliary power on the DC side of the system
6.2 Power-on operation
The prerequisite for this part of the operation is that the storage cabinet is in a normal un-started
state, specifically all switches of the high voltage box, auxiliary power module, and system
convergence module are in the off state, the positive and negative buses of the battery clusters have
not yet been connected to the battery PACKs (this step is for the first time when the power is turned
on), and the three-phase AC input power cables are connected and have a normal voltage input.
6.2.1 Check before powering on
Before powering up the equipment, check the following items carefully.