R
EMOTE MAINTENANCE BYPASS CONNECTION
An additional maintenance bypass may be installed on a peripheral switchboard (see diagram below), for example, o allow
replacing the UPS without interrupting the power supply to the load.
Note
: The Company provides this accessory already pre-assembled in an IP65 plastic box.
It is essential to connect the "SERVICE BYPASS" terminal (see "Views of the UPS connections") to the
auxiliary contact of the SERVICE BYPASS switch. The closure of the SERVICE BYPASS switch will open this
auxiliary contact which informs the UPS that the maintenance bypass has been inserted. The absence of this
connection may interrupt the power supply to the load and damage the UPS.
-
Use cables with cross sections in compliance with the indications given in the "Cross section of the cables" paragraph.
-
In order to connect the "SERVICE BYPASS" terminal to the auxiliary contact of the remote maintenance bypass isolator, use
1mm
2
double isolation cables.
-
If the UPS is connected to an isolation transformer, check the compatibility between the
“remote maintenance bypass”
and
the neutral regime of the installation.
REMOTE MAINTENANCE BYPASS INSTALLATION DIAGRAM
Peripheral switchboard
UPS internal connections
INPUT switch: isolator compliant with the indications given in the "UPS internal protections" section
OUTPUT switch: isolator compliant with the indications given in the "UPS internal protections" section
SERVICE BYPASS switch: isolator compliant with the indications given in the "UPS internal protections" section,
equipped with a normally closed auxiliary contact
