Delta EB3000 Series User Manual page 409

Chapter 11 Optional AccessoriesEB3000
Diagram A. Single turn wiring diagram for shielding wire with a zero phase reactor
Installation Precaution
Install the zero phase reactor at the drive's output terminal (U/T1, V/T2, W/T3). After the zero
phase reactor is installed, it reduces the electromagnetic radiation and load stress emitted by the
wiring of the frequency converter. The number of zero phase reactors required for the drive depends
on the wiring length and the drive voltage.
The normal operating temperature of the zero phase reactor should be lower than 85°C (176°F).
However, when the zero phase reactor is saturated, its temperature may exceed 85°C (176°F). In this
case, increase the number of zero phase reactors to avoid saturation. The following are reasons that
might cause saturation of the zero phase reactors: the drive wiring is too long; the drive has several
sets of loads; the wiring is in parallel; or the drive uses high capacitance wiring. If the temperature of
the zero phase reactor exceeds 85°C (176°F) during the operation of the drive, increase the number of
zero phase reactors.
Recommended maximum wiring gauge when installing zero phase reactor:
Zero Phase
Reactor Model
RF008X00N
Diagram B. Multi-turn zero phase reactor
Max. Wire Max. Wire Gauge AWG
Gauge or LUG
Width
13 MM 3 AWG
(1C*3)
75 C 90 C
1 AWG
11-20
Max. Wire Gauge AWG
(4C*1)
75 C 90 C
3 AWG 1 AWG