Rockwell-automation 1395 Digital DC Drive User Manual Page 25

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Publication 2361-5.01 July 1998
Product Overview 1-13
Control and Field Power
The first (L1) and third (L3) phase of the incoming power are tapped
off and fused to provide single-phase AC power to the primary of
control power transformer (115V AC), field supply circuit (460V AC
maximum), and 24V DC power supply.
Note: For drives using a 575 or 660V AC input, a step-down
transformer will be required for the field supply circuit (see
Figure 1.12).
AC Line RC Suppressor (Optional)
The optional AC line RC suppressor is a device used for limiting line
voltage spikes in drives when the medium voltage source to the
primary of the distribution transformer is switched. The option is
offered for a distribution transformer primary voltage of 2300V or
greater.
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