Emerson SERIES 600T User Manual

The AC auxiliary power supply connections to the Liebert FS are made through the auxiliary power 

fused disconnect on the mounting plate above the inductor-capacitor module and to the right of the 

optional VIB and DCM modules (see Figure 30). See Appendix F.0 - Auxiliary Backup AC 

Power Supply for details on the purpose of the auxiliary AC power supply.

The Auxiliary Power Fused Disconnect (see Figure 31) accommodates the connection of an AC wire 

(Line, Neutral, Ground) and is rated for 110/230 VAC - 50/60 Hz. Open the circuit while wiring, check 

the fuses and then close it. The AC wire must be connected to the auxiliary power fused disconnect 

from the top to a dedicated AC circuit rated for 400VA with branch circuit protection. This AC outlet 

must be connected to a protected low-voltage (110VAC-230VAC, 400VA) source. A qualified electrical 

contractor should make this connection permanent.
The AC wire is field-supplied. It must conform to all applicable local, regional, national regulations, 

such as the National Electric Code for USA. An 18 AWG (0.82 mm

2

) cable is recommended for this 

connection.
Tighten the connections for the 18 AWG cable (0.82 mm

2

) to 15 inch-pounds (1.6N-m).

The AC power supply must remain connected at all times. Precautions must be taken to 

ensure that the connection is not broken. Disconnection may cause damage to the equipment.