Installa�ons Instruc�ons

PST22 Rev. 01

Page 9 of 11

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These converters are components, intended exclusively for integra�on

into other equipment by an industrial assembly process or by a profes-

sionally competent person. Installa�on must strictly follow the safety

regula�ons in respect of the enclosure, moun�ng, creepage and clea-

rance distances, markings of the end-use applica�on.

Connec�on to the system shall be made via the female connector H15.

Pin 26 (Earth) is a leading pin and is connected to the case. For safety

reasons it is essen�al to connect this pin to the protec�ve earth of the

supply system.

The +Vin is internally fused. This fuse is designed to protect the con-

verter against overcurrent caused by a failure, but may not be able to

sa�sfy all requirements. External fuses in the wiring circuit to one or

both input pins (30 or 32) may be necessary to ensure compliance with

local requirements.

Do not open the converters, or the warranty will be invalidated. Make

sure that there is sufficient airflow available for convec�on cooling. This

should be verified by measuring the case of temperature at the speci-

Cleaning Agents and Process

The converters are not herme�cally sealed. In order to avoid possible

damage, any penetra�on of liquids shall be avoided.

Railway Applica�on

The converters have been designed observing the railway standards

EN 50155 and EN 50121. All boards can be protected by a conformal

coa�ng as an op�on ( -V).

Isola�on

The electric strength test is performed in the factory in accordance with

IEC/EN 60950.

Standards and Approvals

The converters are built to meet the safety standards IEC 60950-1, EN

60950-1, UL 60950-1 and CSA 60950-1.

Electric Strength

Design strength

1500

3000

500

Vrms

> 100

>100

Mohms

Insulation resistance

Characteristic

Output to

Output

Unit

Electric

strength

Factory test for production

units (>10s)

2000

2000

500

Vdc

Input to Earth

Input to

Output

Output to

Earth

Temperatures

Min.

Typ.

Max.

Min.

Typ.

Max.

-20

+71

-40

+71

-20

+100

-48

+100

Not operating

-40

+125

-40

+125

Ambiant

Operating (see derating)

°C

Heatsink

Storage

Standard

T option

Unit

Conditions

Reliability

MIL-HDBK-217F, notice 2

Model

Heatsink Temp.

GB

GF

40°C

335000

195000

70°C

165000

97500

100°C

103500

61500

MTBF ( Hours)

PST2272 3 outputs