PST21A Datasheet, PDF (11/13 Pages) Power System Technology – AC-DC 1200W Conduction cooled

Safety & Installa�on
Cleaning Agents and Process
These converters are components, intended exclusively for integra�on The converters are not herme�cally sealed. In order to avoid possible
into other equipment by an industrial assembly process or by a profes- damage, any penetra�on of liquids shall be avoided.
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 male connector
Wurth.
The AC/L 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 may be necessary to ensure compliance with local
Isola�on
requirements.
Do not open the PSU, or the warranty will be invalidated. Make sure ^{The electric strength test is performed in the factory in accordance with}
that there is sufficient thermal baseplate dissipa�on (max. temperature ^{IEC/EN 60950.}
: 100°C). This should be verified by measuring the case of temperature
at the specified measuring point, when the converter is operated in the
end-use applica�on.
Standards and Approvals
The converters are built to meet the safety standards IEC 60950-1, EN
60950-1.
‘Built to meet’ men�onned in the different paragraphs of the datasheet
means that Power System Technology has designed the product to
meet the standard but not cer�fied it in a laboratory.
‘Qualified’ means that the test has been made in a cer�fied laboratory.
Electric Strength
Characteristic
Input to Earth
Electric
Design strength
strength
Factory test for production
units (>10s)
Insulation resistance
1500
2000
Input to
Output
3000
2000
Temperatures
Output to
Earth
500
500
> 100
Output to
Output
>100
Unit
Vrms
Vdc
Mohms
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In opera�on, there is no power dera�ng as long as the baseplate temperature is in the below indacated range.
Reliability
MIL-HDBK-217F, notice 2
Model
MTBF ( Hours)
PST21A 3 outputs
Heatsink Temp.
40°C
70°C
100°C
MTBF calcula�on for a specific part number has to be ordered.
GB
285000
139500
86600
GF
165000
82300
51000
PST21A
Page 11 of 13
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