User manual
Table Of Contents
- Important Safety Instructions
- 1.0 Installation Instructions
- 1.1 Unpacking and Installation
- 1.2 Additional Distribution Mounting and Wiring
- 1.3 Power and Control Wiring
- 1.3.1 Input Power Connections
- Figure 5 Electrical connection location for 23" (584mm) cabinet
- Figure 6 Electrical connection location for 47" (1194mm) cabinet
- Figure 7 Electrical connection location for 47" cabinet with Square D I-Line panelboard
- Table 4 Suggested minimum input wire size data
- Table 5 Main input circuit breaker interrupting rating
- 1.3.2 Junction Box Installation
- Table 6 Main input junction box electrical connections (4 wire)
- Table 7 Main input junction box without transformer electrical connections (5 wire)
- Table 8 Low-voltage (control) junction box dimensions, typical
- Table 9 Main input (power) junction box dimensions, typical
- Figure 8 Low-voltage control junction box connections, typical
- Figure 9 Main input junction box connections, typical
- 1.3.3 System Grounding
- 1.3.4 Grounding Electrode Conductor for Liebert® FPCs With Transformer
- 1.3.5 Output Power Connections
- 1.3.6 Control Wiring Connections
- 1.3.7 Adapter Board
- 1.3.1 Input Power Connections
- 2.0 Equipment Inspection and Startup
- 3.0 Inspection and Startup Checklist
- 4.0 Operating Instructions
- 5.0 Maintenance
Installation Instructions
8
1.2 Additional Distribution Mounting and Wiring
For Liebert
®
FPC
™
s with more than four panelboards, the additional panelboards are furnished in
Liebert FDC
™
enclosures, which are shipped separately from the Liebert FPC.
1.2.1 Liebert FDC Distribution Mounting
The Liebert FDC distribution cabinet has the same base dimensions as a 23" (584mm) Liebert
FPC cabinet (23-1/2" wide x 38" deep [597 x 965mm]) and may be mounted on either the left or right
side of the Liebert FPC.
1. Provide a floor cutout for exit of output cables, as shown in Figure 1.
2. Remove the side panel, internal panel and the lower panel bracket from the Liebert FPC.
3. Remove the Liebert FDC side panel and internal panel, if supplied, and align the Liebert FDC
with the Liebert FPC and bolt the units’ frames together (hardware provided by others).
If floor pedestals are used for the Liebert FPC, two additional floor pedestals are required for the
outside corners of the Liebert FDC. See Figure 1.
4. Install the lower panel bracket on the opposite side of the Liebert FDC cabinet.
5. Make electrical connections. For details, see “Electrical Field Connections” drawings supplied
with the unit.
6. Install the Liebert FPC side panel on the Liebert FDC cabinet.
1.2.2 Distribution Cabinet Electrical Connections
Five field-supplied conductors (3-phase conductors, neutral and ground) are needed to connect the
Liebert FDC cabinet to the Liebert FPC cabinet in the field.
For Liebert FPCs with transformers, the distribution cabinet phase conductors are connected directly
to the transformer terminals:
Phase A to X1
Phase B to X2
Phase C to X3
The Liebert FDC’s neutral and ground conductors are connected to the Liebert FPC’s neutral busbar
and main ground busbar (see unit wiring diagram for location).
For Liebert FPCs without transformers, the distribution cabinet phase and neutral conductors are
connected to the corresponding output power distribution terminal blocks inside the Liebert FPC. The
distribution cabinet ground conductor is connected to the main ground busbar.
For Liebert FPCs with VPMP monitoring, route each distribution cabinet conductor through the
appropriate current transformer (CT) in the Liebert FPC.
NOTE
Distribution cabinet conductors must pass through the current transformers in the same
direction as the Liebert FPC panelboard conductors. Use the existing Liebert FPC panelboard
wiring for reference.