RT9 Powershelf
Rectifier Technologies
158-1806-01.doc
12
2-Mar-06
3.3.1 Factory Supplied Configurations
Powershelves without internal AC distribution (eg. PSLF-1115), unless specially ordered,
are configured with each rectifier active line being terminated in an individual DIN rail
terminal block (beige) and the remaining AC line is connected to a common neutral bar
(blue terminal blocks). The system is shipped with a shorting link installed that connects
all the active terminals together, thereby making the system a single supply, single phase
load.
For Powershelves with AC distribution (eg. PSLF-1110), unless specially ordered, the AC
active feeds to the circuit breakers are connected to one of three terminal blocks (beige).
The unswitched AC lines to the rectifiers are tied together on a common neutral bar (blue
blocks). The wiring is arranged this way to allow the system to be configured easily for
single phase or three phase “star-connection” supply. The system is shipped with a
shorting link joining the three active terminations, thereby making the system a single
supply, single phase load by default.
The shorting link/s must be removed before connecting a 3 phase supply. The label over
the AC terminations indicates the L1, L2, L3 (equivalent to R, S, T phases), N, PE
connections to indicate how the Powershelf with AC distribution is wired. AC feed wiring
should be sized appropriately for the number of rectifiers being powered (allow for 10A per
unit as maximum AC load).
3.3.2 Single phase – individual protected external feeds
Connect each of the circuit breaker protected active wires to the individual terminal blocks
that feed each rectifier. Remove the shorting link from the active terminal blocks (“A”
block). Connect the neutral wire/s to the common neutral terminals.
Figure 3.5