Table of Contents
Advertisement
AC Power Supplies
M
-
ULTI
Multiple modules can be connected in a multi-phase configuration. Wye or
delta load configurations are supported. The AC power supply modules may be
connected in only a wye configuration; they must never be connected in a delta
configuration. The supplies are interconnected with the output return terminals
as common ("wye" connected source).
CAUTION
Do not connect the AC modules in a delta configuration.
The multi-phase group utilizes the analog control signals of the backplane;
therefore, it is restricted by contiguous physical location, as in a parallel group.
The outputs of the modules must be hardwired externally, while all internal
control signal connections are configured automatically when the multi-phase
group is set up through software. In order not to compromise the load
regulation of the output voltages, the connection of the remote sense leads
must be made to every load, and must not have any intervening load wiring.
Figure 4-12 shows the multi-phase connection of three units with remote
sensing on a Wye type load. Figure 4-13 shows the multi-phase connection of
three units with remote sensing on a "delta" type load.
Fault shutdown is coordinated across all modules: a fault within any module of
the group will result in shutdown of all modules.
CAUTION
To prevent damage to a supply, do not exceed the float voltage
specification limit for either of the output terminals to chassis.
4-36
C
PHASE
ONFIGURATION
ReFlex Power™
M380056-01 Rev L
Advertisement
Table of Contents
