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Global Solutions Personal Focus
CONNECTION FOR PARALLEL REDUNDANCY
Two or more SRxxx A series power supplies may be connected in parallel for increased power (with or without di-
odes). It is essential that the wiring from each unit to the load is kept identical for equal power sharing particularly
when diodes are not used.
Two or more SRxxx D series power supplies (standard PSU with alarms), may be connected in parallel for N+1 redun-
dancy using output diodes shown.
Diodes can be fitted inside some power supplies (see models listed below).
The SRxxx P series identifies when an internal diode is fitted in the power supply.
SRxxxP
ALARMS
SRxxxP
ALARMS
INTERNAL diodes can be fitted to the following
models only (diode is fitted in negative line):
100W:
SR100P24, SR100P36,
SR100P48
250W:
SR250P24, SR250P30,
SR250P36, SR250P48, SR250P60
All other models have diodes external to the
power supply, eg fitted into a 2U rack as shown
in the photo to the right.
Specifications are subject to change without notice. No liability accepted for errors or omissions.
SRxxxD
+
-
SRxxxD
2U rack with 2 x SR250D12 power
supplies and decoupling diodes on
heatsink plus V/I meter
ALARMS
ALARMS
+
-
6
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