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Load Forced On Bypass
Press the “Menu” icon
and select the “Command
launcher” icon
.
Press the “Bypass command” (1) icon to switch the system
into static bypass. A confirmation is required.
Check that the UPS status changes to “LOAD FORCED
ON BYPASS” and that the output voltage is still present
and stable by checking the system output page.
The buzzer should start to inform the user that the UPS is in
Load Forced on Bypass mode.
Press “Bypass command” (0) icon to switch the system back to ON LINE mode. A confirmation is required.
Switching the System from On-Line to Manual Bypass
The following operations have to be performed in order to switch the UPS load to “Manual Bypass”.
NOTE:
if the Bypass line is not present, the manual bypass operation will cut off power to the load.
With the SWMB closed, the load is supplied directly from the bypass line.
The switching of the System to manual bypass can be done following this procedure:
VIA STATIC BYPASS (to ensure the best protection to the load):
Verify that no anomalies are present on the system status bar.
Verify that the bypass voltages are correct on the “System measurements” page (no presence of the
message “Bypass not available”).
Verify that the inverter is synchronised to the bypass line (no presence of the message “Inverter
asynchronous”).
From the “Command Panel” page, tap the icon “Bypass command” button to switch the system to static
bypass.
Confirm “BYPASS ON Command”.
Verify that the system switches to “LOAD FORCED ON BYPASS”.
Close the SWMB switch.
The load is now supplied directly by the bypass line through the manual bypass switch.
From the “Command Panel” page, press the “System OFF” icon to switch the system off.
NOTE:
1.
In case of an installation with external SWMB switch, verify first the proper connection of the respective
Auxiliary Contact.
2.
If the UPS is in battery mode, activating the maintenance bypass will shut off the power supply to the load.
3.
During this phase, with a load powered via the maintenance bypass, any disturbances on the mains power
supply line of the UPS will directly affect the connected load (The load is connected directly to the incoming
mains. The UPS is no longer active).
Below is a list of the operations to be performed in order to carry out maintenance work on the equipment without
shutting off the power supply to the connected load:
WARNING: Maintenance works inside the UPS are to be performed exclusively by qualified staff.
