10
S&C Instruction Sheet 659-520
Ac and Dc Circuit
Breakers
The PCS has two circuit breakers located in the lower-middle section of the unit. See
Figure 8 for the location of the circuit breakers. The two circuit breakers are:
Ac Circuit Breaker (CB1)
−
The ac circuit breaker can automatically isolate the PCS
from the utility feeder in the event of a
Trip Offline
alarm. The circuit breaker is
rated at 400 A. See Figure 8 for the location of the ac circuit breaker.
Dc Circuit Breaker (CB2)
−
The dc circuit breaker can automatically isolate the PCS
from the battery in the event of a
Trip Offline
alarm or inverter stop. The circuit
breaker is rated at 400 A. See Figure 8 for the location of the dc circuit breaker.
NOTICE
A few operating controls on the ac and dc circuit breakers are located inside the
PCS . However, unless otherwise specified, these controls should only be operated by
authorized personnel . Indicators for circuit-breaker status are present not only on the
circuit breakers, but also on the Human Machine Interface (HMI) .
Ac circuit breaker
Dc circuit breaker
Figure 8. Ac and dc circuit breakers.
Components and Controls
