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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 any direct air flow). See

mechanical drawings for component locations.

The service life of the power supply is largely determined by the temperature of the electrolytic capacitors during normal operation and therefore to

achieve the optimum lifetime, it is recommended to reduce the temperatures shown by approximately 30 °C.

Thermal Considerations

Thermal Considerations

Temperature Measurements (Ambient

≤ 50 °C)

Component

Max Temperature ºC

D5 case

110 °C

C5

105 °C

C3

105 °C

T1 coil

120 °C

Service Life (U Channel Versions)

The estimated service life of the EMH Dual 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 capacitor within the

product when installed in the end application.

The graph below expresses the estimated lifetime for a given component temperature and assumes continuous operation at this temperature.

Estimated Service Life vs Component Temperature

0

20000

40000

60000

80000

100000

120000

105

95

85

75

65

55

C6 Temperature (°C)

C5 Temperature (°C)

8 Sept 16