
Powersolve Electronics Ltd. Units 8A, Arnhem Road, Newbury, RG14 5RU. England
www.powersolve.co.uk
Medical Desk Top Power Supplies
PSEM50 Series
26 to 50 Watts Switch Mode
Universal AC Input
Features
• Single, dual or triple output versions
• Optional output connectors
• 100% Burn-in
• Wide input voltage range 90 to 264 VAC
• Input surge current protection
• Overvoltage protection
• Overcurrent protection
INPUT
Input voltage 90-264 VAC
Input frequency 47-63 Hz
Input current 1.3A 115 VAC, 0.7A (rms) 230 VAC
Earth leakage current 0.1mA Max
OUTPUT
Output voltage See table
Output current See table
Output power range See table
Ripple & noise
2% max pk-pk
Overvoltage protection 112-132% nominal output
Over
cur
r
ent protection 110-150% nominal current
T
emperatur
e coef
ficient
All outputs
±0.04% / °C maximum
Transient response 4mS 50-100% load change
ENVIRONMENT
AL
Operating temperature 0°C to +70°C, derate linearly from 100% at 40°C to 50% at 70°C
Storage temperature -40°C to +85°C
Relative humidity 5% to 95%
GENERAL
Ef
ficiency 75-88% depending on model
Hold-up time
16mS at 100V
AC input and full load
Line r
egulation
±
0.5% typical, 1% max
Load regulation 3% typical, 5% max
EMC
Confor
m to EN550022’B’, Fcc Par
t 15’B’ and CISPR 22 class ‘B’
Safety UL/cUL2601-1, TUV (EN60601-1)
Electrical Specification
The PSEM50 series are a range of medically approved power
supplies with output power up to 50 Watts. All supplies are UL94V-1
compliant and include an IEC320-C14 3 pin inlet connector. They are
ideally suited for use in hospital instrumentation and many other
applications where medical safety approvals are required. All models
are approved to UL, cUL2601-1 and TUV (EN60601-1). EMC
conforms to FCC Part-18 Class B and CISPR-11 EN55011 class B.
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