Vertiv | NetSure Rectifier Module User Manual (UM1R483500e) | Rev. R
• Power Derating Based on Input Voltage: The rectifier power varies with changes in input voltage and
output voltage. It uses an advanced power limitation method. The lower input threshold is 85 VAC. The
rectifier can provide its maximum rated power (4000 W, 3500 W, or 3200 W) as long as the input
voltage is within the range of 176 VAC to 290 VAC (R48-3200, R48-3200e) or 176 VAC to 305 VAC
(R48-3500e) or 185 VAC to 305 VAC (R48-4000e). Below 176 VAC (R48-3200, R48-3200e,
R48-3500e) or 185 VAC (R48-4000e), and down to 85 VAC, the rectifier will continue to operate
normally but will be in a power derating mode.
a) R48-4000e (1R484000e): See Figure 5.
b) R48-3500e (1R483500e): See Figure 6.
c) R48-3200e (1R483200e): See Figure 7.
a) R48-3200 (1R483200): See Figure 8.
• 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 9, Figure 10, Figure 11, and Figure
12 to view the relationship between the output power and the ambient temperature.
a) Rectifier 1R484000e provides a minimum of 3200 watts at 65 °C and from 48.0 VDC to 58.0 VDC.
b) Rectifier 1R483500e provides a minimum of 2700 watts at 65 °C and from 48.0 VDC to 58.0 VDC.
c) Rectifiers 1R483200 and 1R483200e provide a minimum of 2320 watts at 65 °C and from 48.0 VDC
to 58.0 VDC.
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.)
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