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CONNECTING THE REMOTE MAINTENANCE BYPASS
An additional maintenance bypass may be installed on a peripheral switchboard, for example, to enable the TRIPOWER X31 HE
to be replaced without interrupting the power supply to the load.
It is absolutely essential to connect the "SERVICE BYPASS" terminal (see "View of TRIPOWER X31 HE
connections" ref. 17) to the auxiliary contact of the SERVICE BYPASS switch. Closing the SERVICE BYPASS
switch (4) opens this auxiliary contact which informs the UPS that the maintenance bypass has been
activated. If this connection is not present, the power supply to the load may be shut off and the UPS
damaged.
NOTES: Use cables with a cross section that conforms to the indications given in "Cross Section of the Cables ".
Use a double insulated cable with a cross section of 1mm2 to connect the "SERVICE BYPASS" terminal to the auxiliary
contact of the remote maintenance bypass isolator.
Whenever the TRIPOWER X31 HE is equipped with internal isolation transformer, check the compatibility
between the “remote maintenance bypass” and the neutral arrangement in the electrical plant.
DIAGRAM SHOWING REMOTE INSTALLATION OF THE MAINTENANCE BYPASS ON THE THREE PHASE – SINGLE
PHASE MODEL
Peripheral electric control panel
UPS internal connections
LINE switch: magneto-thermal switch compliant with the indications given in the “External Protection
Devices” section.
NOTE: For installation with single phase input, use a bi-polar magneto-thermal switch.
INPUT switch: disconnecting switch compliant with the indications given in the “TRIPOWER X31 HE Internal Protections”
section.
NOTE: For installation with single phase input, use a bi-polar disconnecting switch.
OUTPUT switch: disconnecting switch compliant with the indications given in the “TRIPOWER X31 HE Internal Protections”
section.
SERVICE BYPASS switch: disconnecting switch compliant with the indications given in the “TRIPOWER X31 HE
Internal Protections” section, complete with auxiliary contact that is normally closed.
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