Installation and Use Manual

Operation
15
4.0 OPERATION
4.1 Connecting Power to the Loads
To connect DC power to the load(s), operate the respective circuit breaker on the Rack PDU to the ON
position.
4.2 Removing Power from the Loads
To disconnect DC power from the load(s), operate the respective circuit breaker on the Rack PDU to
the OFF position.
4.3 Alarms
4.3.1 Local Alarm Indicator
Each Rack PDU contains a circuit breaker alarm indicator. This indicator illuminates Red if any cir-
cuit breaker on the Rack PDU is in the OFF position.
4.3.2 External Circuit Breaker Alarm
Negative 48Vdc is supplied to a set of terminals when any circuit breaker on the Rack PDU is in the
OFF position. These terminals may be connected to customer external alarm circuits.
!
WARNING
Improper operation may cause overheating and lead to increased fire hazard.
Improper operation may also destroy the device and damage other connected
systems.
Make sure that the total input current of the connected systems does not exceed the current
rating specified on the rating plate of the Rack PDU. Please refer to the operating instructions
or the rating plates of the connected systems or the circuit breaker for power specifications.