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QUINT-PS/ 1AC/48DC/10
Parallel operation
Devices of the same type can be connected in parallel to
enable both redundancy and an increase in efficiency. No
other alignment is necessary when in the state of delivery.
If the output voltage is adjusted, a uniform distribution of
power is guaranteed by setting all parallel operated power
supply units to exactly the same output voltage.
To ensure symmetrical distribution of power, we recommend
designing all cable connections from the power supply unit to
a busbar of the same length and with the same conductor
cross section. The system makes it advisable to install a
protective circuit at the output of each device when more than
two power supply units are connected in parallel (e.g.
decoupling diode or DC fuse). This prevents high reverse
feed currents in the event of a secondary device fault.
Redundant operation
I N
+ ?
I N
+ ?
Redundant circuits are suitable for the supply of systems
which make especially high requirements on the operational
safety. If a fault occurs in the primary circuit of the first power
supply unit, the second device automatically takes over the
+
?
entire power supply, without interruption, and vice versa. For
this reason, the power supply units to be connected in parallel
are dimensioned in such a way that the total current
requirement of all consumers can be completely covered by
one power supply unit. 100% redundancy makes external
+ ?
Σ = I N
decoupling diodes necessary (QUINT-DIODE/40, Order No.
2938963)!
Increased performance
I N
+ ?
I N
+ ?
For n parallel connected devices, the output current can be
increased to n x I N . Parallel connection to increase efficiency
is used for the expansion of existing systems. It is advisable
to use parallel connection if the power supply unit does not
+
?
+ ?
Σ = 2 x I N
cover the current requirement of the most powerful
consumer. Otherwise the consumers should be spread
among individual devices independent of one another. A
maximum of five devices can be connected in parallel!
103381_en_02
PHOENIX CONTACT GmbH & Co. KG ? 32823 Blomberg ? Germany ? Phone: +49-(0) 5235-3-00
PHOENIX CONTACT ? P.O.Box 4100 ? Harrisburg ? PA 17111-0100 ? USA ? Phone: +717-944-1300
www.phoenixcontact.com
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2866705 PWR SUPPLY 10A 3X320-575AC 24DC
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