Ac And Dc Circuit Breakers - S&C PureWave SMS-250 Operation And Maintenance

Components and Controls
Ac and Dc Circuit
Breakers
10 S&C Instruction Sheet 659-520
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)
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)
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.
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
Figure 8. Ac and dc circuit breakers.
−The ac circuit breaker can automatically isolate the PCS
−The dc circuit breaker can automatically isolate the PCS
NOTICE
Dc circuit breaker