Puls CS10.241-S1, Manual

Page: 23 / 27

CS10.241, CS10.241-S1
CS-Series
24V, 10A, 240W S
INGLE
P
HASE
I
NPUT
Aug. 2022 / Rev. 2.1 DS-CS10.241-EN
All parameters are specified at 24V, 10A, 230Vac, 50Hz, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
23/27
22. A
PPLICATION
N
OTES
22.1. P
EAK
C
URRENT
C
APABILITY
The unit can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents.
This helps to start current demanding loads. Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up
coil. The inrush current demand of the pick-up coil is several times higher than the steady-state current and usually exceeds the nominal
output current (including the PowerBoost). The same situation applies when starting a capacitive load.
The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load branches are often
individually protected with circuit breakers or fuses. In case of a short or an overload in one branch circuit, the fuse or circuit breaker
need a certain amount of over-current to open in a timely manner. This avoids voltage loss in adjacent circuits.
The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of the power supply.
The capacitors get discharged during such an event, which causes a voltage dip on the output. The following two examples show typical
voltage dips:
Fig. 22-1 Peak load with 2x the nominal current for 50ms,
typ.
Fig. 22-2 Peak load with 5x the nominal current for 5ms,
typ.
10ms/DIV
Output
Voltage
Output
Current
24V
0A
20A
18.5V
1ms/DIV
Output
Voltage
Output
Current
24V
0A
50A
12V
20A Peak load (resistive) for 50ms
Output voltage dips from 24V to 18.5V. 50A Peak load (resistive) for 5ms
Output voltage dips from 24V to 12V.
Peak current voltage dips typ. from 24V to 18.5V at 20A for 50ms, resistive load
typ. from 24V to 17V at 50A for 2ms, resistive load
typ. from 24V to 12V at 50A for 5ms, resistive load