cui.com
date 08/16/2012 │ page 2 of 4CUI Inc │ SERIES: VSUU-120-D │ DESCRIPTION: AC-DC POWER SUPPLY
INPUT
parameter conditions/description min typ max units
voltage
90
130
260
370
Vac
Vdc
frequency 47 63 Hz
current
at 115 Vac, full load
at 230 Vac, full load
1.7
1.0
A
A
inrush current
at 115 Vac, 25°C, full load, cold start
at 230 Vac, 25°C, full load, cold start
12
26
15
30
A
A
power factor full load at 90 ~ 260 Vac 0.95 0.97 1.0
OUTPUT
parameter conditions/description min typ max units
line regulation full load 0.5 1 %
load regulation at 230 Vac 3 5 %
temperature coeffi cient all output ± 0.04 %/°C
transient response full load to half load at 100 Vac 4 ms
start-up full load at 100 Vac 0.3 1 2 s
hold-up full load at 110 Vac 16 ms
PROTECTIONS
parameter conditions/description min typ max units
over voltage protection 112 132 %
over current protection 110 150 %
SAFETY & COMPLIANCE
parameter conditions/description min typ max units
isolation voltage
primary to secondary
primary to earth ground
4,242
2,121
Vdc
Vdc
isolation resistance test voltage of 500 Vdc 50 MΩ
safety approvals UL 60950-1 2nd edition, EN 60950-1 2nd edition
EMI/EMC CISPR 22 class B, FCC part-15 class B
leakage current full load at 240 Vac 0.4 0.75 mA
RoHS compliant yes
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature 070°C
storage temperature -40 85 °C
operating humidity non-condensing 5 95 %
storage humidity 595%
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