Liebert Hinet 10kVA, User Manual

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Hinet UPS User Manual
(12/01)
Page 7
3 Installation (Electrical)
The UPS requires «power» cabling once it has been mechanically installed. All «auxiliary» cables, whether screened or
not, should be run separate from the power cables in metal conduits or metal ducts which are electrically bonded to the
metalwork of the cabinets to which they are connected.
3.1 Power Cabling
WARNING
BEFORE CABLING-UP THE UPS, ENSURE THAT YOU ARE AWARE OF THE LOCATION AND OPERATION
OF THE EXTERNAL ISOLATORS THAT CONNECT THE UPS INPUT/BYPASS SUPPLY TO THE MAINS
DISTRIBUTION PANEL.
CHECK THAT THESE SUPPLIES ARE ELECTRICALLY ISOLATED, AND POST ANY NECESSARY WARNING
SIGNS TO PREVENT THEIR INADVERTENT OPERATION.
3.1.1 Power Cable connections
The terminal block is at the rear of the cabinet.
The bar near the terminals blocks can be used to fasten the cable to the UPS through cable clamps.
3.1.2 Safety earth
The safety earth bus-bar is located near the UPS output terminals. The safety earth cable must be connected to the earth
terminal and bonded to each cabinet in the system.
All cabinets and cable trunking must be earthed in accordance with local regulations.
WARNING
FAILURE TO FOLLOW ADEQUATE EARTHING PROCEDURES CAN RESULT IN ELECTRIC SHOCK
HAZARD TO PERSONNEL, OR THE RISK OF FIRE, SHOULD AN EARTH FAULT OCCUR.
BEFORE ANY OTHER CABLE CONNECTION THE PE SAFETY CONDUCTOR SHALL BE CONNECTED
3.1.3 Protective devices
Input supply protection:
All supplies to the UPS must be provided with three phase power breakers or fuses, a split bypass system will require
two devices. To avoid random tripping on start up due to initial inrush current, a circuit Breaker type C (or slower) is
recommended. Refer to the following table in order to choose site supply fuses, circuit breakers and power isolators
appropriate to the UPS current rating.
Protection against earth faults (RCD devices):
In the event of a differential (RCD) device being installed upstream of the input supply, one must take into account the
transient and steady state earth leakage currents that are produced during start-up of the UPS.
The presence of an RFI suppression filter inside the UPS, determines a residual earth current no greater than 500 mA.
Only RCD delayed device Type A must be used (suited to unidirectional current).
Model Rating 10kVA 15kVA 20kVA 30kVA
Max input current at Nominal Input
Voltage (including battery charger) 16.7A 25.3A 33.5A 50.5A