LEGRAND KEOR HPE 60 kVA Operating Manual page 1049

Installation and start-up of KEOR HPE UPS 60÷80 kVA
Installation et démarrage de l'ASI KEOR HPE 60÷80 kVA
Installazione e avviamento KEOR HPE UPS 60÷80 kVA
Mains connection
The input port of the UPS must be protected either by fuse or by circuit breaker with
termal and magnetic protection.
The use of differential protection devices in the line supplying the UPS is
unadvisable. The leakage current to ground due to the RFI filters is rather high
and it can cause spurious tripping of the protection device.
According to CEI EN62040-1 standard, in order to take into account the UPS'
leakage current, residual current devices having adjustable threshold can be used.
Mains connection
Include an appropriate and readily accessible disconnecting device in the
electrical line connecting the UPS to the mains.
4.1 CONNECTION OF THE POWER CABLES
For the electric connection of the KEOR HPE UPS 60÷80 kVA, connect the following cables following
the below indications:
 AC power supply rectifier input;
 AC power supply bypass input;
 UPS output
 DC power supply from battery
Injury hazard due to electric shock!
Very high voltages are present at the ends of the cables coming from the battery:
 Isolate the battery via DC circuit breakers before connecting it to the UPS;
 Connect the ground cable to the relevant bar before carrying out any other
connection inside the device.
Risk of damages to the device due to insufficient insulation
 The cables must be protected from short-circuits and leakage currents to earth;
 The connection points must be hermetically sealed to prevent the air from
being sucked through the cable passage.
Risk of damages to the device due to incorrect wiring
To connect the device, follow the electrical drawing scrupulously and respect the
polarity of cables.
OMW07096 REV. E 33