GSP500 Series

AC-DC Power Supplies

www.xppower.com

08-Sept-15

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 K type thermocouples placed on the hottest part of the component

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

--

The estimated service life of the GSP500PSxx 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.

Temperature Measurements (At Ambient 50 °C)

Component

Max Temperature °C

T1 Coil

120 ° C

L3 Coil

120 ° C

Q7 Body

120 ° C

Q102 Body

120 ° C

C20

105 ° C

C102

105 ° C

Thermal Considerations - GSP500PSxx Models Only

Service Life

0

50000

100000

150000

200000

250000

300000

350000

105

95

85

C102 Temperature (°C)

75

65

55

C20

L3

T1

Q7

Q102

C102

0

10000

20000

30000

40000

50000

60000

70000

105

95

85

75

65

55

C6 Temperature (°C)