30
8
Powering On and Starting the UPS
Do not start loads before the parallel system is started.
Check that the UPS has passed all check items described in
chapter 6 "
."
Switch on the external battery circuit breaker if any.
Switch on the general UPS mains and bypass mains input circuit
breakers (K, K
m
, and K
b
), and the branch mains and bypass input
circuit breakers (K1, K
m
1, K
b
1, K2, K
m
2, K
b
2) based on site
requirements.
Check that the input voltage is normal.
Check that the initialization screen is displayed, as
shown in section 8.2.
Powering On and Starting the UPS
8.1
Switch on output circuit breaker Q1 and keep output circuit
breaker Q2 open. Check that the voltage difference between the
two ends of output circuit breaker Q2 is within 2 V.
Start the UPS inverter and then shut down the inverter so that
the output PL terminal has voltage output.
Switch on output circuit breaker Q2.
Check that the software version used by the UPS is the same.
Set parallel parameters. For details, see section 8.3.
Start inverters for each UPS in sequence.
