Uninterruptible Power Supplies PowerWAVE 8000DPA RI, Руководство пользователя, Страница: 29 / 76

UPS338-01-00 PowerWAVE 8000-RI DPA User Manual Dated 5 April 2013
3-13
3: Installation
3.8 UPS Power Cabling (preparation and planning)
3.8.1 General requirements
It is the customer’s responsibility to provide all external fuses, isolators and cables used to connect the UPS
input and output power supplies. The information provided in this section of the manual should assist in the
planning and preparation of the UPS power cabling.
The UPS input supply and bypass supply should be connected to the utility mains through a LV-Distribution
board, and protected by a circuit breaker or fuse. This provides overload protection and also a means of
isolating the UPS from the mains supply when required. Similarly, the UPS output supply should be
connected to the load equipment via a suitably fused output distribution panel.
The UPS can be wired with a ‘single feed’ input (standard), whereby the UPS input supply is connected
internally to the UPS bypass circuit; or it can be wired with a ‘dual feed’ input – where the UPS bypass circuit
is connected to a dedicated ‘bypass’ supply
(See Figure 3.11)
.
Figure 3.11 identifies the UPS input/output cabling requirements and provides information regarding the
necessary fuse and cable ratings and cable sizing.
Figure 3.12 shows details of the UPS power terminals’ location and sizing and illustrates that the UPS unit
requires the following power cables:
Input neutral grounding
Figure 3.10 Input neutral grounding
Key Point:
This information is given for guidance only and all fuses, isolators and power cables
must be rated and installed in accordance with the prescribed IEC standards or local regulation –
e.g. BS7671:2008.
Rectifier (In):
• three-phase (1L1, 1L2, 1L3)
• neutral (1N)
• protective earth (PE) connection for the rectifier input
Bypass (In):
• three-phase (2L1, 2L2, 2L3)
• neutral (2N)
• protective earth (PE) connection for the bypass if used as ‘Dual Feed’ input
Load (Out):
• three-phase (3L1, 3L2, 3L3)
• neutral (3N)
• protective earth (PE) connection for the load output
Battery:
• Plus (+)
• Common (N)
• Minus (-)
• protective earth (PE) connection for external batteries (where used)
Key Point:
Input neutral is required to operate the rectifier.
In TN-S systems, no 4-pole input switches or circuit breakers should be used.
During battery operation the neutral must always be grounded.
0V
230V
UPS