Wärtsilä JOVYSTAR COMPACT M
BAX 5480
- 24 -
Mains connection
The connection to the mains must be carried out with protection fuses between the mains and
the UPS.
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.
9.1 Connection of the Power Cables
For the electric connection of the UPS, connect the following cables:
DC supply from the battery (if the battery is external);
AC supply from the rectifier and bypass supply mains;
AC output to the loads.
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.
