PMT Panel Mount Power Supply
4.2V 252W 1 Phase / PMT-4V350W1A
□
TECHNICAL DATASHEET
All parameters are specified at 25°C ambient unless otherwise indicated.
www.DeltaPSU.com (October 2014, Rev. 02)
8
Engineering Data
De-rating
Output De-rating VS. Input Voltage
Note
1. Power supply components may degrade, or
be damaged, when the power supply is
continuously used outside the shaded region,
refer to the graph shown in Fig. 1.
2. If the output capacity is not reduced when the
surrounding air temperature >70°C, the
device will run into Over Temperature
Protection. When activated, the output
voltage will go into bouncing mode and will
recover
when
the
surrounding
air
temperature is lowered or the load is reduced
as far as necessary to keep the device in
working condition.
3. To ensure sufficient convection cooling,
always maintain a distance of ≥ 20mm from
fan ventilated surfaces while the device is in
operation.
4. Depending
on
the surrounding
air
temperature and output load delivered by the
power supply, the device housing can be
very hot!
5. If the device has to be mounted in any other
orientation, please do not hesitate to contact
for more details.
Fig. 1
De-rating for Vertical and Horizontal Mounting Orientation
> 50
°C de-rate power by 4% / °C
> 60
°C de-rate power by 1% / °C
No output power de-rating for the input
voltage from 100Vac to 132Vac & 200Vac to
264Vac
