Vertiv | Liebert EXS 80kVA UPS | User Manual
27
Electrical Installation
•
The switch of UPS module is an isolation switch by default. To prevent UPS fault from spreading to
the upstream of customers, it is recommended to input a separate switch to the UPS according to the
current value in
•
We recommend configuring Vertiv BCB box for the UPS with external batteries. If BCB is not selected,
please select battery switch according to BCB parameters shown in
.
3.1.5.
Power Cable Connecting Terminal
The rectifier input, bypass input, output and battery power cables are connected to the corresponding terminals
3.1.6.
Protection Ground
The protective earth cable is reliably connected to the PE input terminal (see
The PE terminal provides several holes for connecting input PE cable, output PE cable, and external battery PE
cable.
All the cabinets and cable troughs shall be grounded in accordance with local regulations. The grounding wires
shall be securely tied to prevent the loosening of the grounding wire tightening screws when the grounding
wires are pulled.
Warning
Failure to ground as required may cause EMI, electric shock or fire risk.
3.1.7.
Notes
The following points are only for general guidance. If there are relevant local regulations, the local regulations
shall prevail.
1.
The cable size of the protective earth cable shall be selected according to the AC power failure level, cable
length and protection type. The grounding wire connection must use the shortest connection route.
2. For the cables with large current, small cables can be connected in parallel to facilitate installation.
3. When selecting the battery cable size, the current value in
shall be referred to, and a maximum
voltage drop of 4 Vdc is allowed.
4.
Do not form coils, so that the EMI formation is minimized.
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