Delta IED-S Series User Manual page 110

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 wire gauge when installing zero phase reactor:
Zero Phase Reactor
Model No.
RF008X00A
RF004X00A
RF002X00A
RF300X00A
RF008X00N
RF004X00N
RF410X00N
RF300X00N
Max. Wire Gauge AWG (1 C*3)
Max. Wire Gauge or
LUG width
13MM
16MM
36MM
73MM
11MM
16MM
36MM
57MM
75 C 90 C
3 AWG 1 AWG
1 AWG 2/0 AWG
600 MCM 600 MCM
650 MCM 650 MCM
9 AWG 4 AWG
1 AWG 2/0 AWG
600 MCM 600 MCM
600 MCM 600 MCM
6-37
Chapter 6 Optional Accessories | IED-S
Max. Wire Gauge AWG (4 C*1)
75 C
3 AWG
1 AWG
1 AWG
300 MCM
6 AWG
1 AWG
1 AWG
300 MCM
90 C
1 AWG
1/0 AWG
1/0 AWG
300 MCM
6 AWG
1/0 AWG
1/0 AWG
300 MCM