DocumentCode :
2882412
Title :
Design of Large Rack-Mounted Rectifiers
Author :
Witt, E.F. ; Pohl, L.A. ; Myers, H.S.
Author_Institution :
Bell Telephone Laboratories, Whippany, New Jersey
fYear :
1982
fDate :
3-6 Oct. 1982
Firstpage :
145
Lastpage :
151
Abstract :
Natural convective cooling of the 100-ampere 48-volt rack-mounted rectifier (J87437A) depends upon good ventilation. Fourteen ventilation configurations of a prototype rectifier were constructed and power-train component temperatures measured. The selected design with top, lower front and upper rear open, provides good cooling while utilizing a solid bottom for safety. Obstructions over the top of the rectifier increase average component temperatures 0.9° to 3.8°C (1.6° to 6.8°F). Six mounting arrangements of four rectifiers mounted in a framework (4 pack) were evaluated in tests at the Morristown, N.J., central office. Average power-train component temperatures were reduced as much as 9.3°C (16.7°F) by mounting the rectifiers in a 4-pack cabinet without doors and with the rectifiers moved forward 5.1 cm (2 inches) so that the rectifier front doors were in the same plane as the removed 4-pack doors. Statistical evaluations of component temperatures demonstrate that the prototype and Morristown test data are comparable and that all power-train components operate within acceptable temperature limits with an ambient air temperature of 50°C (122°F).
Keywords :
Central office; Cooling; Prototypes; Rectifiers; Safety; Solids; Temperature distribution; Temperature measurement; Testing; Ventilation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Telecommunications Energy Conference, 1982. INTELEC 1982. International
Conference_Location :
Washington, DC, USA
Type :
conf
DOI :
10.1109/INTLEC.1982.4793721
Filename :
4793721
Link To Document :
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