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Once these maintenance operations have been completed, perform the following operations to restart the TRI
POWER X33 HE:
Close the input and output isolators and the battery fuse holders. The signal panel is reactivated. Turn the
TRI POWER X33 HE on again from the “SYSTEM ON” menu. Wait for the sequence to be completed.
Open the maintenance bypass: The TRI POWER X33 HE resumes normal operation.
*
The rms value of the output voltage is set by the precise control of the DSP, regardless of the input voltage, while the output voltage frequency
is synchronised (within a tolerance range which can be set by the user) with the input voltage, in order to allow use of the bypass. Outside this
tolerance range, the TRI POWER X33 HE desynchronises adopting the nominal frequency and the bypass can no longer be used (free
running mode).
Redundant auxiliary power supply for automatic bypass
This TRI POWER X33 HE is provided with a redundant auxiliary power supply which allows the TRI POWER X33 HE
to run on an automatic bypass, even in the event of faults on the main auxiliary power supply. If a fault occurs in the
TRI POWER X33 HE, shutting off the main auxiliary power supply, the load will be powered anyway by the automatic
bypass. The multiprocessor board and the control panel are not powered; therefore the LEDs and the display are off.
Auxiliary “power share” and “power out” sockets (optionals)
The "Power share" socket
is a programmable output socket which enables, under certain operating circumstances,
the automatic disconnection of the load applied to it. The events that determine this automatic disconnection of the
“power share” socket can be selected by the user through the TRI POWER X33 HE Tools configuration software
(see "Configuration software” and “Configuring the TRI POWER X33 HE" paragraphs). For example, the
disconnection could be selected after a given time of battery operation, or when the end-of-battery-charging pre-
alarm threshold is reached, or when an overload occurs.
The "Power out" socket
is connected directly to the TRI POWER X33 HE output and it is useful to power
accessories such as modems, for example.
Safety notes:
when the TRI POWER X33 HE is switched on, if the output isolator (SWOUT) is opened, the
sockets will remain powered.
If the manual bypass isolator (SWMB) is inserted, the output isolator (SWOUT) is opened and once the TRI
POWER X33 HE is turned off, the sockets are no longer powered.
Power walk-in
This TRI POWER X33 HE is equipped in series with a Power Walk-In mode, which can be activated and configured
through the TRI POWER X33 HE Tools software. When the mode is active, and mains power is restored (after an
autonomy period) the TRI POWER X33 HE resumes absorbing progressively from it, in order to prevent stress (due
to the peak) on any generator set installed Tri Power X33 HEtream. The transient time can be set from 1 to 30
seconds. The default value is 10 seconds. During the transient, the necessary power is drawn partially from the
batteries and partially from the mains, maintaining a sinusoidal absorption. Once the transient is over, the battery
charger is turned on again.
