VF-S250-48A-CF CUI Inc, VF-S250-48A-CF Datasheet - Page 2

• Manufacturer Part Number: VF-S250-48A-CF
• Description: POWER SUPPLY 250W 48V SCREW TRM
• Manufacturer: CUI Inc
• Series: V-Infinityr

Specifications of VF-S250-48A-CF

• Voltage - Output: 48V
• Number Of Outputs: 1
• Power (watts): 250W
• Applications: Commercial
• Power Supply Type: Switching (Closed Frame)
• Voltage - Input: 90 ~ 264VAC
• Mounting Type: Chassis Mount
• 1st Output: 48 VDC @ 5.21A
• Size / Dimension: 5.00" L x 3.20" W 2.00" H (127mm x 81.3mm x 50.8mm)
• Power (watts) - Rated: 250W
• Operating Temperature: 0°C ~ 70°C
• Efficiency: 83%
• Approvals: CB, CE, cUL, TUV, UL
• Line Regulation: ±1%
• Load Regulation: ±1%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Other names: 102-2145; VF-S250-48A-CF

PART NUMBER: VF-S250-XXA-CF
INPUT
parameter
input frequency
input voltage
input current
inrush current
power factor
OUTPUT
parameter
transient response
overshoot
turn on delay
hold up time
adjustability
LED display
power good
fan drive
PROTECTION CIRCUIT
parameter
Input fuse
overload
short circuit
output over-voltage
over temp.
20050 SW 112
th
conditions/description
Full Range
At 90-132 V ac
At 180-264 V ac
peak measured at 115 V ac at full load, cold start
peak measured at 230 V ac at full load, cold start
Passive Power Correction meets EN61000-3-2 class A
conditions/description
Output voltage returns to within 1% in less than
2.5 mS for a 50% load change. Peak
transient does not exceed 5%.
Turn-on and turn-off overshoot shall not exceed
5% over nominal voltage.
At 120 V ac
At 120 V ac and 80% of rated maximim load
Adjustable with built-in trim pot.
When green (LED1) is on the power supply is operating normally.
Designated as PG on the CN1. This signal
goes high 100-500 ms after the output reaches regulation.
It goes low at least 1 ms before loss of regulation.
12 V dc/300mA for external fan
conditions/description
Built-in ac fuse. A blown fuse usually indicates permanent
damage to the power supply serviceable by factory only.
Current limiting starts at 110-140% of the rated output current in foldback mode and
recovers automatically.
Short circuit can be continuous. Recovers automatically upon removal of short.
Output is protected agaist overvoltage. Unit shuts down and latches
when voltage at output terminals exceeds 130%. AC input needs to be
reset to restart the power supply.
Power supply shuts down when temperature is in excess of 95 º± 5°C. Auto recovery.
Ave. Tualatin, Oregon 97062
phone
phone [phone] fax
DESCRIPTION: switching power supply
fax [phone]
min
min
47
90
20
nom
nom
±5%
max
max
264
63
35
70
www.v-infinity.com
6
3
1
rev.
page
date
V ac
units
units
second
Hz
A
A
A
A
ms
01/2011
2 of 5