Shenzhen Hpmont Technology Co., Ltd.
Chapter 4 Electrical Installation
HD09 Series User Manual V1.1
-11-
4.1.3
Power Cable
•
Do not connect the input power cord to the output U / V / W terminal.
•
Do not connect the phase-shifting capacitor to the output circuit.
•
Make sure that the AC input source voltage matches the rated input voltage of the inverter.
For the selection of the power cable, refer to Section 5.1 Peripheral Accessories Selection, page 19.
4.1.4
Motor Cable
Selection of motor cables, see Section 5.1 Peripheral Accessories Selection, page 19.
The longer the motor cable, the higher the carrier frequency, the higher the harmonic leakage current
on the cable. Leakage current can adversely affect the frequency converter and nearby equipment.
When the motor cable exceeds 100 meters, it is recommended to install the AC output reactor, and
refer to the following table to set the carrier frequency (F23.00).
Motor cable length
< 30 m
30 - 50 m
50 - 100 m
> 100 m
Carrier frequency setting
Below 15 kHz
Below 10 kHz
Below 5 kHz
Below 2 kHz
When the motor cable is too long or the cable cross-section is too large, the derating is reduced by
about 5% for each additional stroke in the recommended cross-sectional area.
Because the larger the cross-sectional area of the cable, the greater the capacitance to ground, the
greater the leakage current.
4.1.5
Control Cable
To reduce the interference and attenuation of the control signal, the length of the control cable should
be limited to 50 meters.
The control cable must be a shielded cable, and the analog signal cable should be twisted shielded.
Shielded cables should use high-frequency low-impedance shielded cables, such as braided copper
mesh, aluminum wire mesh or barbed wire.
Warning