Vertiv Liebert APS series User Manual

Configuring the Neutral/Earth Jumper
The UPS contains an isolation transformer that generates a neutral conductor for the connected load.
The UPS is a separately-derived source and contains a neutral/earth jumper. You may need to remove a
factory-installed neutral/earth-jumper copper bar to comply with local codes and regulations.
Figure 3.19 Configuring the neutral/earth jumper
Connecting the Cables
NOTE: Input and output cables must be run in separate conduit before cable connection.
1. Remove the knockouts at the junction box, see Figure 3.20 below and pull the cables through
them, leaving some slack for installation.
Figure 3.20 Knockouts in units without a transformer
ITEM DESCRIPTION ITEM DESCRIPTION
1 16-bay, with transformer 3 Output-cable knockout
2 12-bay, with transformer 4 Input-cable knockout
Vertiv | Liebert® APS™ Installer/User Guide | 39

Vertiv Liebert APS series Specifications

General

Brand	Vertiv
Model	Liebert APS series
Category	UPS
Language	English