Vertiv Liebert PPC - Distribution Sidecar Mounting and Wiring; Sidecar Mounting; Sidecar Electrical Connections; Power and Control Wiring

Vertiv | Liebert
®
PPC
™
User Manual | Rev. 6 | 03/18 | 9
1.2 Distribution Sidecar Mounting and Wiring
For Liebert PPC units with more than two panelboards, the additional panelboards are furnished in side-mounted
enclosures that are shipped separate from the main unit.
1.2.1 Sidecar Mounting
The additional distribution sidecar is 18 in. x 30 in. (457x762mm) and can be mounted on either the left or right
side of the main unit, with left side mounting recommended.
1. Provide a floor cutout for exit of output cables, as shown in Figure 1.
2. Remove the side panel, the upper panel retainers and the lower panel hooks from the main unit.
3. Align the distribution sidecar with the main unit and bolt the two frames together using the four bolts and hardware
provided.
4. If floor pedestals are used for the main unit, two additional floor pedestals are required for the outside corners of the
sidecar. See Figure 1.
5. Install the upper panel retainers and lower panel hooks on the sidecar enclosure.
6. After electrical connections are completed, install the unit side panel on the sidecar.
1.2.2 Sidecar Electrical Connections
Five conductors (3-phase conductors, neutral and ground) are furnished with the distribution sidecar for
connection to the main unit in the field, along with an intercabinet frame ground conductor.
For Liebert PPC’s with transformers, the sidecar phase conductors are connected directly to the transformer
terminals:
• Phase A (wire 412) to X1
• Phase B (wire 422) to X2
• Phase C (wire 432) to X3
The sidecar neutral (Wire 442) and ground (Wire 452) conductors are connected to the Liebert PPC main
ground busbar (see unit wiring diagram).
For Liebert PPC’s without transformers, the sidecar phase and neutral conductors are connected to the
corresponding output power distribution terminal blocks inside the main unit. The sidecar ground conductor is
connected to the main ground busbar.
For all Liebert PPC’s with VPMP monitoring, route each sidecar conductor through the appropriate current
transformer (CT) in the main unit.
1.3 Power and Control Wiring
Power and control wiring should be installed by licensed electricians. All power and control wiring must comply
with the NEC and applicable local codes.
NOTE
Sidecar conductors must pass through the current transformers in the same direction as the main unit
panelboard conductors. Use the existing main unit panelboard wiring for reference.