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21
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Power Supply PS1000-A6-24.5
Output
8
Output
The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input
voltage.
The output is designed to supply any kind of loads, including capacitive and inductive loads.
If extreme large capacitors, such as EDLCs (electric double layer capacitors or "UltraCaps")
with a capacitance > 0.3F are connected to the output, the unit might charge the capacitor
in an intermittent mode.
The output is electronically protected against overload, no-load and short-circuits.
In case of a protection event, audible noise may occur.
Output voltage
Nom. 24V
Adjustment range
Min.
24-28V
Guaranteed value
Max. 30.0V
This is the maximum output voltage which can
occur at the clockwise end position of
the potentiometer due to tolerances. It is not
a guaranteed value which can be achieved.
Factory settings
Typ.
24.1V
±0.2%, at full load and cold unit
Line regulation
Max. 10mV
Between 85 and 300Vac
Load regulation
Max. 50mV
Between 0A and 6A, static value, see Figure 8.1
Ripple and noise voltage Max. 50mVpp
Load >0.2A, Bandwidth 20Hz to 20MHz, 50Ohm
Max. 200mVpp
Load <0.2A, Bandwidth 20Hz to 20MHz, 50Ohm
Output current
Nom. 6A
1
At 24V and an ambient temperatures below 45°C
Nom. 5A
At 24V and 60°C ambient temperature
Nom. 3.8A
At 24V and 70°C ambient temperature
Nom. 5.1A
1
At 28V and an ambient temperatures below 45°C
Nom. 4.3A
At 28V and 60°C ambient temperature
Nom. 3.2A
At 28V and 70°C ambient temperature
Derate linearely b45°C and +70°
Fuse breaking current
Typ.
15A
Up to 12ms once every five seconds,
see Figure 8.2.
The fuse braking current is an enhanced transient
current which helps to trip fuses on faulty output
branches. The output voltage stays above 20V.
Overload behaviour
Continuous current
For output voltage above 13Vdc, see Figure 8.1
Intermittent current
2
For output voltage below 13Vdc, see Figure 8.1
Overload/ short-circuit
current
Max. 7.2A
Continuous current, see Figure 8.1
Typ.
9A
Intermitted current peak value for typ. 1s
Load impedance 50mOhm, see Figure 8.3
Discharge current of output capacitors is not included.
Max. 3.5A
Intermitted current average value (R.M.S.)
Load impedance 50mOhm, see Figure 8.3
Output capacitance
Typ.
2 000µF
Included inside the power supply
Back-feeding loads
Max. 35V
The unit is resistant and does not show
malfunctioning when a load feeds back voltage
to the power supply. It does not matter whether
the power supply is on or off. The absorbing
energy can be calculated according to the built-in
large sized output capacitor.
1
This current is also available for temperatures up to +70°C with a duty cycle of 10% and/ or not longer than 1 minute every 10 minutes.
2
At heavy overloads (when output voltage falls below 13V), the power supply delivers continuous output current for 1s. After this,
the output is switched off for approx. 9s before a new start attempt is automatically performed. This cycle is repeated as long
as the overload exists. If the overload has been cleared, the device will operate normally. See Figure 8.3.
