EPL225 Series

AC-DC Power Supplies

www.xppower.com

04­August­15

Figure 4

Estimated Service Life vs Component Temperature

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 thermocouples placed on the hottest part of the component

(out of direct air flow). See Mechanical Details for component locations.

The estimated service life of the EPL225 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

key capacitors with in the product when installed by the end application,

The graph below expresses the estimated lifetime based on the temperature of these key components based on the average temperature

over the lifetime of the equipment.

Temperature Measurements (At Maximum Ambient)

Component

Max Temperature °C

TR1 Coil

120°C

L4 Coil

120°C

C2

105°C

C52

105°C

0

10000

20000

30000

40000

50000

C2 + C52 Temperature (ºC)

C52

C2

60000

70000

80000

105

95

85

75

65

55

45

Thermal Considerations

Service Life