AC-DC Power Supplies
CCL400 Series
Thermal Considerations
In order to ensure safe operation of the PSU in the end-use equipment, the temperature of the components listed in the table below must
not be exceeded. Temperature should be monitored using K type thermocouples placed on the hottest part of the component
(out of direct air flow). See below for component locations.
Temperature Measurements (At Ambient 50 °C)
Component
L2 Coil
TR28 Body
C64
Max Temperature °C
120 °C
120 °C
105 °C
C39
105 °C
Service Life
The estimated service life of the CCL400 Series is determined by the cooling arrangements and load conditions experienced in the end
application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of a
key capacitors with in the product when installed by the end application. The worst case of the two figures should be taken as the indicative
service life in 24/7 operation.
The graph below expresses the estimated lifetime of a given component temperature and assumes continuous operation at this temperature.
Estimated Service Life vs Component Temperature
350000
300000
250000
200000
150000
100000
50000
L2
0
105
95
85
75
65
55
C39Temperature (°C)
C64
180000
160000
140000
120000
100000
80000
60000
40000
20000
0
C39
TR28
105
95
85
75
65
55
C64Temperature (°C)
www.xppower.com
01 Feb 16
XPPOWER [ XP POWER LIMITED ]
