Rev. A

DCHF20W Series

20~36.5 Watts

Single, Dual, and Triple Outputs

DC/DC Chassis Mount Power Converters

Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833

12/03/2010

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

Page 2 of 4

SPECIFICATIONS: DCHF20W 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

Nom

Max

Unit

INPUT SPECIFICATIONS

Input Voltage Range

12VDC nominal input models

10

12

18

VDC

24VDC nominal input models

18

24

36

48VDC nominal input models

36

48

72

110VDC nominal input models

72

110

144

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Output Voltage Adjustment Range

Single Output Models

-10

+10

%

-5

+5

Line Regulation

Full load

≤ -0.5

≤ +0.5

%

Load Regulation

≤ -0.5

≤ +0.5

%

≤ -3

≤ +3

≤ -6

≤ +6

Output Current

See Table

Output Power

See Table

Ripple & Noise

See Table

PROTECTION

Over Load Protection

110

150

%

Short Circuit Protection

Yes

GENERAL SPECIFICATIONS

Efficiency

See Table

Withstand Voltage

Input to Output

All for 1 minute

1000

VDC

Input to FG

1000

Output to FG

500

Isolation Resistance

At 500VDC

> 100

MΩ

ENVIRONMENTAL SPECIFICATIONS

Operating Temperature

-10

+50

°C

Operating Humidity (non-condensing)

20

90

% RH

Storage Temperature

-20

+85

°C

Storage Humidity (non-condensing)

20

95

% RH

Cooling Method

Free air convection

PHYSICAL SPECIFICATIONS

Dimensions (L x W x H)

4.37 x 3.07 x 1.42 inches

(111 x 78 x 36 mm)

Weight

8.82oz (250g)

SAFETY & EMC CHARACTERISTICS

Safety Standards

Design refer to LVD

EMC Standards

Design refer to EN55022, EN61000-4

Due to advances in technology, specifications subject to change without notice.