N700E INSTRUCTION MANUAL
2-15
2.1.2.10
N700E Accessory Wiring
For better system performance enhancement, optional accessories may be used with N700E inverters.
Note1: The applied equipment for this analysis was a HYUNDAI standard
4 pole squirrel cage motor.
Note2: Be sure to consider the capacity of the circuit breaker to be used.
Note3: Be sure to use larger wire for power lines if the distance exceeds 20m.
Note4: Be sure to use a grounding wire same size of power line or similar.
Note5: Use 0.75
㎟
for AL relay and RN relay.
Separate by the sum wiring distance from inverter to power supply, from
inverter to motor for the sensitive current of leakage breaker (ELB)
Wiring distance
Sensitive Current(mA)
100m and less
50
300m and less
100
Table 2-9: Sensitive Current per Wiring Distance
Note6: When using CV line and wiring by rigid metal conduit, leak flows.
Note7: IV line is high dielectric constant. SO the current increase 8 times. Therefore,
use the sensitive current 8 times as large as that of the left list.
And if the distance of wire is over 100m, use CV line.
Name
Function
(1)
Input AC Reactor
Recommended to use when the unbalance voltage rate is 3% or
more and power supply is 500 kVA or more, and there is a rapid
change in the power supply. It also reduces harmonics and
improves the power factor.
(2)
Noise filter for
Inverter
Reduces common noise generated between the power supply
and the ground, as well as normal noise. Put it in the primary
side of inverter.
(3)
Radio Noise Filter
(zero-phase reactor)
Helps to reduce noise on a peripheral radio when an inverter is
running.
(4)
Input Radio Noise
Filter
(capacitor filter)
Reduces radiation noise emitted from wire at the input.
(5)
DC Reactor
Helps to improve power factor for the
VFD.
(6)
Breaking Resistor /
Regenerative
Breaking Unit
Used for applications that need to increase the brake torque of
the inverter or to frequently start/stop and to run high inertia
load.
(7)
Output Noise Filter
Reduces noise emitted from the VFD motor leads. This helps to
minimize interference with sensitive equipment (ie: sensors or
weight scale).
(8)
Radio Noise Filter
(Zero-phase reactor)
Reduces noise generated at the output of the VFD.
(It is possible to use for both input and output.)
(9)
Output AC Reactor
Recommended to use if motor lead length is greater than 65
feet to help prevent reflective wave.
LCR filter
Sine-wave filter to prevent reflective wave if motor lead length is
greater than 65 feet
Table 2-10: Optional Accessories for Improved Performance
Figure 2-4: Accessories Connection View
MCCB
Fuse
3-ph Input
T1
U
In
ve
rte
r
PD
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
P
RB
T2
V
T3
W
R
L1
S
L2
T
L3
Motor