HV100 Series High Performance Current Vector Inverter
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● When the wiring between the inverter and the motor exceeds 50m (220V series) and 100m (380V class), high dv/dt
will be generated in the coil of the motor, which will damage the interlayer insulation of the motor. Please use the AC motor
dedicated to the inverter or install a reactor on the inverter side.
● When the distance between the inverter and the motor is long, please reduce the carrier frequency, because the
larger the carrier, the greater the leakage current of higher harmonic on the cable, which will have adverse effects on the
inverter and other equipment.
4.4.2 Control circuit wiring (signal line)
The signal line should not be placed in the same slot as the main circuit wiring, otherwise interference may occur.
Please use shielded wires for signal wires, and ground them at one end. The wire diameter is 0.5-2mm² 1 shielded wire is
recommended for the control line. Use the control terminals on the control keypadcorrectly as required.
4.4.3 Grounding wire
Please use the third grounding method (below 100Ω) to ground the grounding wire terminal E; Please use the
grounding wire according to the technical basic length and size of electrical equipment; Never share the grounding
electrode with large power equipment such as electric welding machine and power machinery, and the grounding wire
should be as far away from the power line of large power equipment as possible; Please use the grounding wiring mode of
multiple inverters in the following figure (a) to avoid the loop of (b) or (c).
● Grounding wiring must be as short as possible.
●Please properly ground the grounding terminal E, and never connect to the zero line.
(a) Correct
(b) Error
(c) Error
4.5 Matters needing attention for specific application
4.5.1 Type selection
(1) Installation of reactor
When the inverter is connected to a large-capacity power transformer (above 600kVA) or the phase-advancing
capacitor is switched, the power input circuit will produce excessive peak current, which may damage the components of
the converter. To prevent this, please install DC reactor or AC reactor. This also helps to improve the power factor on the
power supply side. In addition, when thyristor converters such as DC drivers are connected to the same power supply
system, DC reactors or AC reactors must be set regardless of power supply conditions.
Inverter Capacity (KVA)
Installation conditions of reactor
(2) Inverter capacity
When running a special motor, please make sure that the rated current of the motor is not higher than the rated output
current of the inverter. In addition, when running multiple induction motors in parallel with a inverter, the capacity of the
inverter should be selected so that 1.1 times of the total rated current of the motors is less than the rated output current of
the inverter.
(3) Starting torque
The starting and accelerating characteristics of the motor driven by inverter are limited by the overload rated current of
the combined inverter. Compared with the starting of general commercial power supply, the torque characteristic is smaller.
If a large starting torque is required, please increase the capacity of the inverter by one level or increase the capacity of the
motor and inverter at the same time.
(4) Emergency stop
Although the protection function will act and the output will stop when the inverter fails, the motor cannot be stopped
suddenly at this time. Therefore, please set mechanical stop and hold structure on the mechanical equipment that needs
emergency stop.
Po
w
er
su
pp
ly
ca
pa
city
Power - tuned reactor is
required
No reactor required
