Input Wiring (Tb1); Output Wiring (Tb3) - Liebert Nfinity User Manual

Input Wiring (TB1)

To connect the input wiring, follow these steps:
Note: Input wiring must be installed using
conduit.
1. Locate the
input wiring
access,
remove the
knockout
and pull the
three input
wires
through it,
allowing
some slack
for
installation.
2. Secure the conduit to the rear panel of the
UPS.
3. Input Power cables connect to screw
terminals on the Input Terminal Block
located to the right of the Bypass Voltage
Terminal. First insert the earth wire through
the earth lug and tighten it to the proper
torque value (2.5 – 3 Nm). Then connect
the wires to the block connections as shown
below. Using a torque wrench, turn the
screws clockwise until tightened to the
proper torque value.

Output Wiring (TB3)

Without transformer
With transformer
Note the Neutral / Earth jumper on the terminal above.
Transformer Models
The Nfinity UPS contains an isolation
transformer that
conductor for the connected equipment.
The UPS is a separately derived source
and contains a neutral to earth bonding
jumper. Remove this earth/neutral link
when required by local electrical codes.
15
generates a neutral