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MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual Page 61
8.2. DC Output (with either 1MRF28H54BV Rectifiers and
1MRF28H54BV50 Rectifiers)
Nominal Output Voltage (factory set) 54.5 VDC
Operating Voltage Range 44 – 58 VDC
Rated Output Current (per Rectifier) 50 A
Rated Output Power (per Rectifier) 2800 W (45ºC)
Efficiency 91% Typical
8.3. Controls and Indicators
Rectifiers
Input Healthy LED AC power present.
Output Healthy LED DC output voltage within operating range (-39.5 to –59.5 VDC).
Output Current LED On when rectifier is supplying current.
Thermal Control LED On when one of three internal sensors is above 90ºC
Current Limit LED On when rectifier is in current limit.
Overvolts LED On when rectifier is above 57 Volts. (Must be powered down to reset)
Overtemp LED On when one of three internal sensors is above 130ºC. Power
Conversion is inhibited.
Fan fail LED On when Fan is running too slow.
Standby LED On when the unit is in the standby mode. No output power is
produced. Rectifier is still active
+V Test Point Rectifier Voltage can be measured with a voltmeter between COM
and +V.
COM Test Point Negative reference for both +V and +I
+I Test Point Rectifier Current can be measured with a voltmeter between COM
and +I.