Narrow Profile (3-Day Power Supply)
Switching Regulated Power Supplies (to 288 watts)
Power Factor Correction and Universal Input

AC-DC single output
(accepts either AC or DC input)

• Shipped Within 3 Days
• UL60950, UL508, CE Certified
• Five Year Warranty
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SPECIFICATIONS

Input Voltage Range: 90-265 VAC, 49-420 Hz, single phase, or 110-350 Vdc. DC input may be connected without regard to polarity.

Inrush current: Cold start, (thermistor limiter) 20A peak @115 VAC; 40A peak @ 230 VAC.

Startup Time: 800 mS typical.

Input Undervoltage: An input of less than 90 VAC will not damage power supply.

Power Factor: 0.99 (typical) at 115 VAC, 60 Hz and full load. Complies with EN61000-3-2.

Load Regulation: ±0.05% or 5 mV, whichever is greater.
Line Regulation: ±0.05% or 5 mV, whichever is greater.

Output Voltage Remote Adjustment: The output voltage may be controlled by means of an external 1K potentiometer.

Polarity: Output is floating and may be used in either polarity.

Drift: ±0.1% maximum over 8 hours, after 30 minute warmup.

Temperature Coefficient: ±0.02%/°C (Typical).

Holdup Time: 16 mS minimum.

Transient Response: 3 ms to return to ±1% of output setting. Maximum of ±3% output excursion following a load step change from 50% to 100%.

Remote Sensing: Compensates up to 0.5 volt drop per output line, within the limits of the output voltage adjustment range.

Overload/Short Circuit Protection: Current limiting with automatic recovery.

Overvoltage Protection: Latches power supply OFF, reset by momentarily removing AC input power.

Output Inhibit: Applying between +3 and +25 Vdc to the inhibit terminal will disable the supply.

EMI: Complies with FCC Part 15 and EN55022, Class A.

Output Indicator (DC on): Green LED.

Thermal Protection: Thermostat, self-resetting.

Efficiency: See Output Specs. (Typical, at nominal input voltage, with full load.)

Ambient Operating Temperature: 0 to +71°C.

Storage Temperature: –40 to +85°C.

Cooling: Forced air cooled; air enters rear of power supply and exits from top.

Switching Frequency: 100 kHz (Typical).

Dielectric Withstand Voltage       Isolation
---------------------------------------------
Input to output:     4242 Vdc      300 Vdc 
Input to case:       2121 Vdc      300 Vdc 
Output to case:       750 Vdc      300 Vdc 

Internal Failure Protection: Provided by internal fuse.

Size and Weight:

Case   | Rough               |  Number of fans    |  Approx. 
Size   | Dimensions (inches) |  on rear panel     |  Weight 
-------|---------------------|--------------------|--------------
WN8        1.7 x 3.5 x 9.8             2             2 lb. 2 oz.
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WN8A       1.7 x 3.5 x 9.8             1             1 lb. 14 oz.
                               (centered on rear)
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See Drawing for exact dimensions.

Mounting: Threaded mounting holes permit mounting to a chassis, cabinet wall or bracket. To mount from the power supply side of the mounting surface or for DIN rail mounting, use accessory Mounting Kits.