• built-in cooling with temperature-controlled fan
• +70°C
operation
•
•
•
•
•
•
output trim
current/voltage/temperature protections
screw terminal interface
switch-selectable AC input range
low standby power consumption
30 mm height
MODEL
VGS-250B-12
VGS-250B-24
VGS-250B-48
Notes:
output
voltage
(Vdc)
output
current
max
(A)
output
power
max
(W)
ripple
and noise
1
max
(mVp-p)
efficiency
2
typ
(%)
12
24
48
20.8
10.5
5.2
249.6
252
249.6
150
150
200
86.5
89
89.5
1. 20 MHz bandwidth oscilloscope, 12” of twisted load cables paralleled with 0.1 µF ceramic and 47 µF electrolytic capacitors placed across the terminals at the load.
2. At 230 Vac, 50 Hz, full load.
3. All specifications are measured at Ta=25°C, nominal input voltage, and rated output load unless otherwise specified.
PART NUMBER KEY
VGS-250B
-
XX
Base Number
Output Voltage
cui.com
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VGS-250B
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
06/20/2018
│
page
2 of 5
INPUT
parameter
voltage
frequency
current
inrush current
leakage current
no load power consumption
Notes:
conditions/description
via input selector switch
1
min
90
180
47
typ
115
230
max
132
264
63
5
3
60
2
0.75
units
Vac
Vac
Hz
A
A
A
mA
W
at 115 Vac, full load
at 230 Vac, full load
at 230 Vac, cold start, full load
at 240 Vac
at 230 Vac
1. Input selector must be set to match input voltage or damage could occur.
OUTPUT
parameter
line regulation
load regulation
adjustability
start-up time
rise time
hold-up time
switching frequency
12 Vdc output model
all other models
built in trim pot
at 115/230 Vac, full load
at 115/230 Vac, full load
at 115 Vac, full load
at 230 Vac, full load
12
16
65
±10
1.5
30
conditions/description
min
typ
max
±0.5
±1
±0.5
units
%
%
%
%
s
ms
ms
ms
kHz
PROTECTIONS
parameter
over voltage protection
over current protection
short circuit protection
over temperture protection
conditions/description
output shutdown, auto recovery
output shutdown, auto recovery
output shutdown, auto recovery
output shutdown, auto recovery
min
115
105
typ
max
150
150
units
%
%
SAFETY & COMPLIANCE
parameter
isolation voltage
conditions/description
input to output for 1 minute, 10 mA
input to ground for 1 minute, 10 mA
output to ground for 1 minute, 10 mA
input to output at 500 Vdc
input to ground at 500 Vdc
output to ground 500 Vdc
IEC/EN 60950-1, UL 60950-1
class I
EN 55032:2015, Class A
EN 55032:2015, Class A
EN 61000-3-3:2013, Class A
IEC 61000-4-2, air: ±8 kV; contact: ±4 kV, Class A
IEC 61000-4-3, 3 V/m, Class A
IEC 61000-4-4, Ac power port: 1 kV;
signal & telecommunication ports: 0.5 kV, Class B
100
100
100
min
typ
1,500
1,500
500
max
units
Vac
Vac
Vac
MΩ
MΩ
MΩ
isolation resistance
safety approvals
safety class
conducted emissions
radiated emissions
voltage fluctuation and flicker
ESD immunity
radiated field immunity
electrical fast transient
immunity
Notes:
2. The power supply is considered a component which will be installed into final equipment. The final equipment still must be tested to meet the necessary EMC directives.
cui.com
For more information, please visit the
product page.
CUI Inc
│
SERIES:
VGS-250B
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
06/20/2018
│
page
3 of 5
SAFETY & COMPLIANCE (CONTINUED)
parameter
surge immunity
conducted immunity
magnetic field immunity
voltage dips, interruptions
MTBF
RoHS
Notes:
conditions/description
IEC 61000-4-5, input L to input N: 1 kV;
input L to FG: 2 kV; input N to FG: 2 kV, Class C
IEC 61000-4-6, frequency range: 0.15~80 MHz;
field strength: 3 Vms, Class A
IEC 61000-4-8, 1 A/m, Class A
IEC 61000-4-11:
voltage dips >95% reduction, 0.5 period, Class A
voltage dips 30% reduction, 25 period, Class B
voltage dips >95% reduction, 250 period, Class C
as per MIL-HDBK-217F, 25°C
yes
min
typ
max
units
200,000
hours
1. The power supply is considered a component which will be installed into final equipment. The final equipment still must be tested to meet the necessary EMC directives.
The revision history provided is for informational purposes only and is believed to be accurate.
date
06/20/2018
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
Fax 503.612.2383
cui.com
techsupport@cui.com
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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