Output

The output provides an SELV/PELV/ES1 nominal voltage that is electrically isolated from the input voltage.

The device is designed to supply any type of load, including capacitive and inductive loads. If very large capacitors, such as EDLCs (electrical double-layer capacitors or "UltraCaps") with a capacitance > 0.25F are connected to the output, the device can charge the capacitor intermittently.

The output is electronically protected against overload, no-load and short circuit. In the event of a protection event, audible noises may occur

Output voltage	Nom.	48V
Adjustment range	Min.	48-56V	Guaranteed value
Adjustment range	Max.	60V	This is the maximum output voltage that can occur in the end position of the potentiometer in clockwise direction due to tolerances. It is not a guaranteed value that can be achieved.
Factory settings	Typ.	48.0V	±0.2%, single use at full load (cold device)
Factory settings	Typ.	47.0V	±0.2%, parallel use at 10A (cold device) (46.6V ±0.2% at 12A and 49.0V ±0.2% at zero load)
Line regulation	Max.	10 mV	Between 85 and 300Vac
Load regulation	Max.	150 mV	Between 0 and 10A, static value, "single use"
Load regulation	Typ.	2000 mV	Between 0 and 10A, static value, "parallel use", see Fig. Output voltage over output current (parallel use) typ.
Residual ripple and ripple voltage	Max.	50mV_SS	Bandwidth 20 Hz to 20 MHz, 50 Ohm
Output current	Nom.	12A¹⁾	At 48 V and ambient temperature below 45°C
	Nom.	10A	At 48 V and 60°C ambient temperature
	Nom.	7.5A	At 48 V and 70°C ambient temperature
	Nom.	10.3A¹⁾	At 56 V and ambient temperature below 45°C
	Nom.	8.6A	At 56 V and 60°C ambient temperature
	Nom.	6.5A	At 56 V and 70°C ambient temperature
	Linear derating between +45°C and +70°C
Safety switch-off current	Typ.	30A	Up to 12ms once every five seconds, see Fig. Dynamic output current capacity, typ. The fuse switch-off current is an increased transient current that contributes to the tripping of fuses on faulty output branches. The output voltage remains above 40V.
Overload behavior		Continuous current	Output voltage > 26Vdc, see Fig. Output voltage over output current, typ.
Overload behavior		Hiccup mode ²⁾	Output voltage < 26Vdc, see Fig. Output voltage over output current, typ.
Short circuit current	Max.	14.8A	Continuous current, see Fig. Output voltage over output current, typ.
	Typ.	15A	Intermittent current peak value for typ. 2s Load impedance 10mOhm, see Fig. Short circuit at the output, The discharge current of the output capacitors is not included.
	max	4.7A	RMS value of the current, Load impedance 10mOhm, see Fig. Short circuit at the output,
Output capacity	Typ.	2500μF	Included in the power supply
Load feedback	Max.	63V	The device is resistant to load feedback and will not indicate a malfunction if a load is feeding voltage back into the power supply. It does not matter whether the power supply is switched on or off. The absorbed energy can be determined by means of the built-in large-size output capacitor.

¹⁾ This current is also available for temperatures up to +70°C with a duty cycle of 10% and/or no more than 1 minute every 10 minutes.

²⁾ In the event of heavy overload (when the output voltage drops below 13V), the power supply provides continuous output current for 2s. The output is then switched off for about 18 seconds before a new switch-on attempt is automatically made. This cycle is repeated as long as the overload persists. After the overload has been rectified, the device will operate normally. See Fig. Short circuit at output, hiccup mode, typ.

Output 1: — Output voltage over output current (single use); output voltage over output current (parallel use)

Output 2: — Short circuit at output, hiccup mode, typ.; Dynamic output current capacity, typ.