TECHNICAL DATASHEET
PJB Open Frame Power Supply
24V 100W 1 Phase / PJB-24V100W
□□
A
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (October 2020, Rev. 03)
9
Forced Cooling
(Air Velocity > 0.7m/s)
Output Load De-rating VS Surrounding Air Temperature
Air Flow Direction
Open Frame / L Frame
Enclosed
Fig.1.3 De-rating for Mounting Orientation A to F
> 60°C de-rate power by 2% / °C
Fig.1.4 De-rating for Mounting Orientation A to F
> 50°C de-rate power by 2% / °C
Notes
1. Power supply components may degrade, or be damaged, when the power supply is continuously used outside the shaded region,
refer to the graphs shown above.
2. If the output capacity is not reduced when the surrounding air temperature is more than the upper limit temperature, 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. Depending on the surrounding air temperature and output load delivered by the power supply, the device housing can be very hot!
4. If the device has to be mounted in any other orientation, please contact
for more details.
