Vertiv
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eSure™ Rectifier Module User Manual (UM1R482000e3)
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Rev. M
14
4.
At input voltage of 176V and output >48V, max output power is 2000W.
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Output Protection:
a)
Overload / Reverse Current: The rectifier has a 63A fuse in the negative output DC bus. This fuse is
not customer replaceable. The rectifier can be plugged into or pulled out of a shelf while operating,
without damage or opening the fuse.
b)
Current Limiting: The rectifier has a current limit function. The current limit point can be set
between the range of 4 to 41.7 A, adjustable via the controller. The current limit accuracy is ±1.5A
when the output voltage ranges from 42 to 58 V. Below 42 V the current will fold back to a lower
value.
c)
Advanced Current Limit Function: The rectifier has an advanced Current Limit Function. When a
short circuit occurs at the rectifier output terminals, the rectifier will keep its output current at a
value below the maximum current limit set point. This function effectively protects the rectifier and
the equipment connected to the rectifier. When the short circuit fault is cleared, the rectifier will
automatically restore back to normal operation.
d)
High Voltage Shutdown:
1.
Adjustable Control: If rectifier output voltage exceeds an adjustable preset value and the
rectifier is delivering more than 10% of its rated current, the rectifier shuts down. (Adjustable
from 56 VDC to 59 VDC via the controller. The restart hysteresis is 0.5 V ±0.2 V.)
The rectifier then restarts and a HVSD restart timer starts (time value configurable via the
controller, factory default is 5 minutes). If output voltage again exceeds the high voltage
shutdown value before the HVSD restart timer expires, the rectifier shuts down and locks out.
Manual restart is then required (by turning power to the rectifier off or by removing the rectifier,
waiting until the LEDs on the rectifier extinguish, then turning power to the rectifier on or re-
inserting the rectifier). If the rectifier does not experience a high voltage condition before the
HVSD restart timer expires, the restart circuit is reset.
If two or more rectifiers are paralleled, only the rectifier causing the high voltage condition shuts
down.
2.
Backup: If rectifier output voltage exceeds 59.5 V ±0.5 V (non-adjustable) and the rectifier is
delivering more than 10% of its rated current, the rectifier shuts down. The rectifier then
restarts and a HVSD restart timer starts (time value configurable via the controller, factory
default is 5 minutes). If output voltage again exceeds the high voltage shutdown value before
the HVSD restart timer expires, the rectifier shuts down and locks out. Manual restart is then
required (by turning power to the rectifier off or by removing the rectifier, waiting until the LEDs
on the rectifier extinguish, then turning power to the rectifier on or re-inserting the rectifier).
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Over-Temperature Protection: The rectifier provides over temperature protection by derating output
power and recovers automatically.
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Active Load Sharing: The rectifier uses advanced digital active load sharing technology that maintains
balancing to within 3% of rated current.
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Hot Swappable: The rectifier is designed to be plug-and-play. The rectifier can be inserted or removed
from a live DC power system with no damage. When the rectifier is plugged into the system, the system
output voltage will not be affected.
