PIC480.241C Datasheet, PDF (19/21 Pages) PULS GmbH – 24V, 20A, SINGLE PHASE INPUT

PIANO-Series
PRELIMINARY
PIC480.241C
24V, 20A, SINGLE PHASE INPUT
23.3. EXTERNAL INPUT PROTECTION
The unit is tested and approved for branch circuits up to 30A (UL) and 32A (IEC). An external protection is only
required if the supplying branch has an ampacity greater than this. Check also local codes and local requirements. In
some countries local regulations might apply.
If an external fuse is necessary or utilized, minimum requirements need to be considered to avoid nuisance tripping of
the circuit breaker. A minimum value of 10A B- or 6A C-Characteristic breaker should be used.
23.4. PARALLEL USE TO INCREASE OUTPUT POWER
Do not use the power supply in parallel to increase the output power.
23.5. PARALLEL USE FOR 1+1 REDUNDANCY
Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a
certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any
interruption.
Please note: This simple way to build a redundant system does not
cover failures such as an internal short circuit in the secondary side of
the power supply. In such a case, the defect unit becomes a load for
the other power supplies and the output voltage can not be
maintained any more. This can only be avoided by utilizing
decoupling diodes which are included in the redundancy module
YR40.241.
Recommendations for building redundant power systems:
++- -
24-28V
DC-OK
DC-
OK
PIC480.241C
Power Supply
L N PE
+-+-
Input Input
12
YR40.242
Redundancy
Module
Output
+-
++- -
24-28V
DC-OK
DC-
OK
PIC480.241C
Power Supply
L N PE
Failure
Monitor
a) Monitor the individual power supply units. Therefore, use the
DC-OK relay contact of the PIC480.241C power supply.
I
b) Use separate input fuses for each power supply.
L
c) Use separate mains systems for each power supply whenever it is
N
PE
possible.
I
24V,20A
Load
d) It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.
Jun. 2016 / Rev. 0.2 DS-PIC480.241C-EN
All parameters are specified at 24V, 20A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
19/21