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Chapter 4 Debug and operation
4.1 Startup and shutdown
Startup steps can be conducted after energy storage inverter is installed and debugged by
engineers, with the power switch closed.
4.1.1 Check before startup
Before startup, check the device according to the following steps:
(1) Visually inspect and ensure that there is no damage outside the module, and DC
breaker D1 and AC breakers S2 and D3 are in “OFF” state.
(2) According to the inspection items in the third chapter after installation, check the DC
input wiring of the energy storage device, whether the AC output wiring is normal and the
grounding is good.
(3) Check whether battery voltage is within normal voltage range.
(4) Check whether the phase voltage and line voltage of the grid side are within the normal
range and record the voltage value.
4.1.2 Startup steps
These startup steps are applicable to the circumstance that the energy storage inverter
system is in outage state and can be started. Operation steps are as follows:
(1) Close DC breaker D1 of battery cabinet, the inverter will be powered-on. And the LCD
is on and initializing. After about 10s, LCD will indicate such warning information as “Alarm:
0103”. (It represents AC undervoltage and AC underfrequency.)
(2) The inverter is defaulted to operate in grid-tied mode. Close AC breaker D3.
(3) Close AC isolator S2 in the inverter. After about 5s, such warning information
as“Alarm:0103” will be cleared automatically.
(4) Set up the system startup and on-grid operation mode.
(5) If the inverter is required to operate in off-grid mode, set monitoring parameter to control
the operation mode after Step (1). If it is set as off-grid mode, such information as
“Alarm:0103” will be cleared automatically.
6) After the AC voltage on LCD screen of the inverter is 400V, close AC isolator S2 of the
inverter to power a load.
CAUTION
If the inverter is required to operate in off-grid mode, please confirm
that the breaker to the grid has been disconnected. Otherwise, it might
damage the inverter, or cause personnel injury to the grid maintainers.
4.1.3 Shutdown steps
During normal operation of energy storage inverter, the following steps shall be conducted
