Dual Switchmode Power Supply - PR Electronics 2223

The power supply is based on switch mode technology to achieve a high efficiency.
The outputs are adjustable by 2 front potentiometers in the ranges 5…24 VDC.

Supply for small measuring systems that demand 2 stabilized voltages.
Either as a combination of positive and negative voltages, or as 2 separate supplies as required.
The two supplies are galvanically separated with 500 VAC test voltage and can be connected in series or used as two independent supplies with or without common gnd.
Separation of circuits in safety installations according to PELV/SELV.
Galvanic isolation between the primary and the secondary voltage is achieved through the double-isolated safety transformer.

Two green LEDs, Power ON 1 and Power ON 2, indicate active outputs.
By connecting the two outputs in series, 10…48 VDC or ±5…24 VDC can be achieved.
The input circuit is protected with a bimetal thermal fuse.
DC output short circuit protection with current limiter.
Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature	-20°C to +60°C
Relative humidity	< 95% RH (non-cond.)
Protection degree	IP30
MECHANICAL SPECIFICATIONS
Dimensions (HxWxD)	80.5 x 35.5 x 84.5 mm (D is without pins)
Weight approx.	400 g
COMMON SPECIFICATIONS
Supply
Internal power dissipation	4 W
Isolation voltage
Isolation voltage, test / working	3.75 kVAC / 250 VAC
Isolation output 1 / 2, test / working	500 VAC / 50 VAC (75 VDC)
PELV/SELV	IEC 61140
Effect of supply voltage change	< ±30 mV (±10%)
Transformer	EN 60742
Transient stability (10%-max. load)	< 250 mV
Temperature coefficient	0.05% / °C
EMC immunity influence	< ±0.5%
INPUT SPECIFICATIONS
Supply voltage	21.6…26.4 VAC 103.5…126.5 VAC 207…253 VAC
Frequency	50…60 Hz
OUTPUT SPECIFICATIONS
Current output
Current limit	Typ. 100 mA (short circuit)
Output voltage	4.75…25.2 VDC
Output power	Max. 7.5 W (total)
Output current, per channel	0.5 A / 5 VDC (2.5 W) 0.37 A / 12 VDC (4.5 W) 0.30 A / 15 VDC (4.5 W) 0.18 A / 24 VDC (4.3 W)
Load effect (10%-max. load)	< 1.5% / A
Output ripple	< 20 mVRMS
OBSERVED AUTHORITY REQUIREMENTS
EMC	2014/30/EU
LVD	2014/35/EU
EAC	TR-CU 020/2011
EAC LVD	TR-CU 004/2011

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