DC Power Technologies FS3 Version 3 - Technical Hardware Manual - Manual (Page 30)

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6. Hardware Configuration – FS5,
FS9
The FS5 and FS9 require connection to a three phase 480V AC
supply.
AC supply wiring should meet or exceed the current draw
requirements of the specific charger model. See the rating label on
the charger for the input current requirements.
Field Wiring Connections
Field wiring connections should be made by a qualified
electrician.
A field wiring terminal strip on the input side of the AC Filter PCB
allows the connection of AC supply wiring to the unit. Access into
the frame should be gained through one of the two knockouts in the
rear panel.
Provision for securing the input cable jacket to the chassis with a
cable tie is located near the cable entry point.
Wiring color should conform to standard practice for the region of
installation.
FS5: Copper conductors required.
FS9: Copper conductors rated 75°C minimum required.
AC Input Configuration
Configuration No. 4 – 480V Three Phase
Note: It is common in the US that a fourth wire (neutral) be used in
a three phase circuit. If present, it should be attached to the “E”
(ground) terminal.