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User Instructions UM1R483500E
Spec. No. 1R483200 (Model R48-3200) Issue AG, November 20, 2012
Spec. No. 1R483200E (Model R48-3200E)
Spec. No. 1R483500E (Model R48-3500E)
Page 5
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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Power Derating Based on Temperature: The Rectifier delivers full power when
operating at an ambient temperature of +45 C (+113 F) or below. Each Rectifier
continuously monitors the ambient temperature surrounding the power conversion
circuit. If this temperature for any reason (such as a high ambient temperature or
failed fan) increases above approximately +45 C (+113 F), the Rectifier will not shut
down. Rather, the Rectifier limits its maximum output power to maintain the
temperature of the power conversion circuit within design parameters. Operation
between +45 C (+113 F) and +75 C (+158°F) will result in output power being
decreased. Full power capability is restored when the temperature decreases to
below approximately +45 C (+113 F). Refer to Figure 7, Figure 8, and Figure 9 to
view the relationship between the output power and the ambient temperature.
1) Rectifiers 1R483200 and 1R483200E provide a minimum of 2320 watts at 65°C
and from 48.0 to 58.0VDC.
2) Rectifier 1R483500E provides a minimum of 2700 watts at 65°C and from 48.0 to
58.0VDC.
Warning: The module is rated for continuous operation at full output power up
to +45°C (+113°F). Operation between +45°C (+113°F) and +75°C
(158°F) will result in output power decrease. Operation above +75°C
(+158°F) is considered abnormal and should be used on a temporary
1
basis only.
1
Temporary Operation at Abnormal Temperature: Temporary operation is
defined as a period of not more than eight consecutive hours per day, and a total of
not more than 15 days in a year. (This refers to a total of 120 hours in any given
year, but no more than 15 occurrences in that one-year period.)
Figure 7
Typical Thermal Power Limit Curve (R48-3200 [1R483200])