CCL400 Series
Thermal Considerations
AC-DC Power Supplies
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
Max Temperature °C
L2 Coil
TR28 Body
C64
C39
120 ° C
120 ° C
105 ° C
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
0
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
C
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
Lifetime (Hrs)
250000
200000
150000
100000
50000
0
L2
105
95
85
75
65
55
C39 Temperature (°C)
C64
180000
160000
140000
Lifetime (Hrs)
120000
100000
80000
60000
40000
20000
0
105
95
85
75
65
55
TR28
C39
C64 Temperature (°C)
www.xppower.com
16 May 19
XPPOWER [ XP POWER LIMITED ]
