Rev. E

PSM250 Series

250 Watts, Single Outputs

Open Frame & U-Chassis Packages

Medical AC/DC Switching Power Supplies

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

04/05/2012

603-778-2300 www.wallindustries.com Fax 603-778-9797

Page 2 of 6

SPECIFICATIONS: PSM250 Series

All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.

We reserve the right to change specifications based on technological advances.

SPECIFICATION

TEST CONDITIONS

Min

Typ

Max

Unit

INPUT SPECIFICATIONS

Input Voltage Range

90

264

VAC

Input Frequency

47

63

Hz

At 115VAC

4

Input Current (rms)

At 230VAC

2

A

At 115VAC, cold start at 25°C

50

Inrush Current

At 230VAC, cold start at 25°C

100

A peak

At 115VAC and full load

0.95

Power Factor

At 230VAC and full load

0.90

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Output Regulation

At 25°C including initial tolerance, line voltage, load

currents, and output voltages adjusted to factory settings

-5

+5

%

Output Current

See Table

Minimum Load

0

%

Output Power

See Table

Ripple & Noise

At 20MHz limited bandwidth and 0.1µF ceramic and

10µF electrolytic capacitors in parallel on the output

-1

+1

%

Hold-up Time

115VAC and full load

16

ms

Temperature Coefficient

-0.04

+0.04

%/°C

PROTECTION

Over Load Protection

Automatic recovery

110

160

%

Short Circuit Protection

Automatic recovery

Over Voltage Protection

Automatic recovery

GENERAL SPECIFICATIONS

Efficiency (typical)

115VAC and full load

85

%

Primary to Secondary

5656

VDC

Isolation Voltage

Primary to Frame Ground

2121

VDC

Earth Leakage Current

At 264VAC

300

µA

ENVIRONMENTAL SPECIFICATIONS

Operating Temperature

Derate linearly 2.5% per °C from 41°C to 60°C

0

60

°C

Storage Temperature

-40

85

°C

Humidity (non-condensing)

5

95

%

MTBF

Full load and 25°C

> 100,000 hours

PHYSICAL SPECIFICATIONS

Open Frame Type (Suffix “O”)

5 x 3 x 1.28 inches (127 x 76.2 x 32.5 mm)

Dimensions (L x W x H)

U-Chassis Type (Suffix “U”)

5 x 3.2 x 1.52 inches (127 x 81 x 38.6 mm)

Open Frame Type (Suffix “O”)

0.88 lbs (400g)

Weight

U-Chassis Type (Suffix “U”)

1.11 lbs (500g)

SAFETY & EMC

Safety Standards

UL/cUL UL60601-1, TUV EN60601-1, IEC 60601-1:2005 (3

EMC Standards

EN60601-1-2, FCC Part 18 Class B, EN55011 Class B, CE