Vertiv NetSure 731 C62 Series User Manual page 69

2) Lock out at the second overvoltage (by default)
When the output voltage reaches the software protection point, the rectifier will shutdown, and restart automatically
after 5 seconds. If the overvoltage happens again within a set time (default: 5min. Configurable through controller), the
rectifier will shut down and hold that state. It requires manual resetting to restore the operation. If the output current
is less than 10 percent of the rated output current, the rectifier will not shut down.
Manual resetting: Resetting can be done manually through the controller, or by removing the rectifier from system
NOTE! If the output current is less than 10 percent of the rated output current, the rectifier will not shut down.
2. Overvoltage hardware protection: When the output voltage (unadjustable) reaches the hardware protection point
(58.5V ~ 60V), the rectifier will shutdown, and restart automatically after 5 seconds. If the overvoltage happens again
within a set time (default: 5min. configurable through controller), the rectifier will shut down and hold that state. It
requires manual resetting to restore the operation.
Overtemperature protection
Power limiting based on temperature
Each rectifier monitors the working temperature of the power-switching circuit. No matter in what reason (for instance,
high ambient temperature or fan fault) the temperature increase + 50C, the rectifier will not power off. But it will limit
the maximum power output, and then turn into the power limiting status to guarantee the power-switching circuit
temperature is in the setting range. The operation at temperature from +50C to +70C will minimize the output power.
When the temperature dropped to about +50C, the full power will restore.
WARNING! The continuous running rated full power output temperature of the rectifier reaches up to +50C
full power. The operation at the temperature from +50C to +70C will minimize the output power. The
operation at temperature above +70C is abnormal, the running is temporary1.
1Temporary running at abnormal temperature: The continuous running time for temporary running in one day
cannot exceed 8 hours, in one year cannot exceed 15 days (that is, it cannot exceed 120 hours in one year, the
frequency cannot exceed 15 days).
PFC over/under voltage
If the inner bus voltage value exceeds the over/under voltage threshold, the rectifier would be shut down, and the yellow indicator
would be on.
Communication failure
The yellow indicator on the rectifier panel will flash when the rectifier experiences a communication failure. To protect
the battery, the rectifier communication failure occurs, the rectifier output voltage will automatically adjust to
when
53.5V (according to actual need, different voltages can be preset). The yellow indicator on the rectifier panel will be
normal when the rectifier communication is restored. Auto-recovery is enabled upon the clearing of the corresponding
fault.
Fan fault protection
An will be generated upon a fan fault. In such cases, the red indicator on the rectifier panel will flash, the rectifier
alarm
will be off, no voltage output. Auto-recovery is enabled upon the clearing of the corresponding fault.
Imbalance output current
When are multiple rectifiers in the power system, the rectifier with high load sharing error will be recognized
there
automatically, and the yellow indicator on the panel will be on.
The failure information will be reported to the associated system controller and the controller will process the failure
accordingly.
Vertiv™ NetSure™ 731 C62 Series Power System User Manual
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