Rectifier Installation And Removal; To Remove A Rectifier From The Magazine; Inserting A Rectifier Into The Magazine - Rectifier RT9- 24V Installation, Operation And Technical Manual

Installation, Operation and Technical Manual Rectifier Technologies

4.2 Rectifier Installation and Removal

In the system, the rectifiers are designed to operate in parallel in a N+1 redundant mode.
Therefore, there is never a situation in which it is necessary to set individual rectifier
parameters.
The rectifiers are designed to be "hot pluggable" in that they can be plugged into and out
of a "live" magazine. Due to the small size of energy storage elements in the rectifier
output, there is no significant disturbance to the DC bus when a rectifier is plugged into the
magazine.
An inrush limiting circuit in the AC input circuit that utilises a relay and an inrush current
limiting resistor limits the disturbance to the AC source to an acceptable level when a unit
is plugged in with AC voltage present on the AC bus.

4.2.1 To Remove a Rectifier from the Magazine

Although the connectors are designed to be "hot pluggable" it is advisable to first switch off
power to the unit by means of the circuit breaker in the AC distribution module before
unplugging the unit. This is done to prolong the life of the rear "hot pluggable" connector.
Each rectifier 1U shelf has a spring clip that secures the rectifiers in place once it is
plugged into its magazine. First lift the clip, then, using the finger recess in the front, pull
the rectifier from the magazine.
WARNING !!
Take care when removing the rectifier as it may be uncomfortably hot to hold especially if
the ambient temperature is high and the unit has been operating at maximum load.

4.2.2 Inserting a Rectifier into the Magazine

Although the connectors in the unit are designed for "hot pluggability" it is advisable to turn
off the AC power to the input connector by means of the related circuit breaker in the AC
distribution module before plugging in the unit.
Carefully slide the rectifier into the magazine. Press the unit into the magazine until it is
flush and the spring retaining clip clicks down. This ensures that it will not fall out in the
event of severe shaking as might occur in the event of an earthquake.
Switch on the relevant AC circuit breaker in the AC distribution module. The rectifier will
start automatically and connect itself to the DC bus at the appropriate time.
158-1872-01 11 19-Feb-14