Positron Teleline 751109/15, Description And Installation

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53
Temperature Considerations
Table 10: Temperature Calculation Example
Slot No. Model Power Consumption
Power
Dissipation Max. Operating
Temperature
1
751339SP 10 W at -48 Vdc 5 W
65°C (149 °F)
2
751339R2 0 W 4 W
65°C (149 °F)
3
7501-24 0 W 0 W
65°C (149 °F)
4
7501-24 0 W 0 W
65°C (149 °F)
5
7501-16C 6 W at -48 Vdc 6 W
50°C (122 °F )
6
7501-16B 8.4 W at -24 Vdc 8.4 W
50°C (122 °F )
7
751322 2.4 W at -48 Vdc 2 W
65°C (149 °F)
8
751322/2 3.6 W at -48 Vdc 3.5 W
65°C (149 °F)
-24 Vdc
Internal
Power
Supply
751313MC N/A 25% of Total
power cons-
umption at
-24 Vdc =
2.1 W
65°C (149 °F)
-48 Vdc
Internal
Power
Supply
751318MC N/A 25% of Total
power cons-
umption at
-48 Vdc =
5.5 W
65°C (149
°F)
Total power
consumption:
8.4 W at -24 Vdc
22 W at -48 Vdc
Total power
dissipation:
36.5W
Highest
allowable
temperature:
50°C (122
°F
)
Temperature inside the shelf
=(total power dissipation x shelf thermal resistance) + room temp.