You can directly connect the 1394 to a three-phase, AC power line.

However, if certain power line conditions exist, the input power component can malfunction. If either of the following is true, you can use a line reactor or isolation-type transformer to reduce the possibility of this type of malfunction:

• The AC line supplying the drive has power factor correction capacitors.

• The AC line frequently experiences transient power interruptions or significant voltage spikes.

Important: Line conditioning is not typically required. If you have experienced power problems in the past on a power distribution line, you may need to consider input power conditioning.