Vertiv™ NetSure™ DC/DC Converter Module User Manual
6
1.2.5
Standard Features
•
Type of Power Conversion Circuit: High Frequency.
•
Input Voltage Protection:
a)
Fusing: A non-user replaceable fuse is located in the negative input lead of each DC-DC converter.
b)
High and Low Input Voltage Inhibit: The converter shuts down at low or high input voltage.
1.
Low Voltage Disable Point: -40.0 VDC ±0.5 VDC; hysteretic at least 3 VDC for restart.
2.
High Voltage Disable Point: 59.5 VDC ±0.5 VDC; hysteretic at least 2 VDC for start.
•
Output Protection:
a)
Fusing: A non-user replaceable fuse is located in the negative and positive output lead of each DC-DC converter.
b)
Overvoltage Protection: When output voltage goes above a preset value (59.5±0.5V, not to exceed 60V for more than
150ms), the converter shuts down. Software settable HVSD level (from controller) 56V-59V.
c)
Power Limit: The output instantaneous peak power is not more than 2000W, and the average power within 100ms is not
more than 1600W.
d)
Over Temperature Protection: The operation of a DC-DC converter will automatically shut down if the internal
temperature of the module exceeds a predetermined value. Operation will automatically resume after the over-
temperature condition is corrected.
•
Series Paralleling Output FET: A series paralleling output FET is provided in each DC-DC converter. This allows the modules
to be paralleled for redundancy.
•
Hot Swappable: The converter is designed to be plug-and-play. The converter can be inserted or removed from a live DC
power system with no damage. When the converter is plugged into the system, the sub-system output voltage will not be
affected.
•
Cooling: Each converter contains a fan for forced convection cooling.
a)
Fan Fault Protection: The converter shuts down and its alarm indicator (red) flashes if the fan fails. Fan failure is
detected and reported to controller. The fan is not field replaceable.
b)
Fan Control: Fan speed is continuously variable. When input voltage is within normal range, the built-in processor
adjusts fan speed according to the converter’s output power. For example, a higher output power increases the fan
speed.
•
Communication Failure: The protection indicator (yellow) will flash should communication between the converter and
associated system controller fail. The failure information will be reported to the associated system controller and the
controller will process the failure accordingly. During a communication failure, the converter output voltage will automatically
adjust to 57.00 VDC. The converter will revert to normal operation once normal communication is restored.
•
Monitoring Function: The converter has a built-in advanced DSP (Digital Signal Processor) that monitors and controls the
operation of the converter. The DSP also communicates with the associated system controller in real time through the CAN
bus. Table 1.2 lists the different commands and information exchanged between the converter and the controller.
•
External Alarm: Provided via the associated controller. Refer to the separate Power System documentation for a description
of available external alarms.
