HNC Electric HV480 Series, Руководство пользователя

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139
HV610-132G3
315 400
HV610-160G3
350 400
HV610-185G3
400 500
HV610-200G3
400 500
HV610-220G3
500 500
HV610-250G3
500 630
HV610-280G3
630 630
HV610-315G3
750 750
HV610-355G3
800 800
HV610-400G3
800 800
HV610-450G3
1000 1000
HV610-500G3
1250 1250
HV610-560G3
1600 1600
8.2.3 AC input reactor
The device aims to change the voltage waveform distortion caused by the capacitive characteristics of the input
end of the frequency inverter, validly eliminate the high-order harmonic wave on the input side and suppress the
surge on the power supply side, thus improving the power factor, preventing other devices from being damaged due
to the voltage waveform distortion, and eliminating the input current imbalance caused by the unbalance between the
power supply phases. In addition, the higher harmonics of the power supply will cause damage to the frequency
inverter.
8.2.4 AC output reactor
When the connection between the frequency inverter and the motor is too long, the distributed capacitance
between the cables will increase, which is easy to generate capacitive high harmonic current, which will directly
cause the output over current accident of the frequency inverter. It will also cause electromagnetic interference to
other devices. Therefore, adding output reactors can reduce these impacts. As for the distributed capacitance
between the output wiring of the frequency inverter, if the high harmonic current content in the wiring is high, it may
cause resonance and generate leakage current. Leakage currents exceeding 100 m in length of motor cables may
also be large. The solution is to reduce carrier frequency operation, and a more valid measure is to install output
reactors.
It is recommended to use AC reactors under the following circumstances:
1) The power supply capacity of the frequency inverter is more than ten times that of the frequency inverter.
2) The same power supply as the frequency inverter is connected with a thyristor load or a power factor
compensation device controlled by a switch, etc. where the quality of the power grid is relatively poor.
3) The three-phase unbalance degree of the power supply is greater than 3 %.
The recommended reactor parameters are shown in the following table.
Frequency inverter power ( kw )
(Rated voltage 380V)
Inlet wire reactor
Current ( a )
Inlet wire electricity
Inductance ( MH )
Output reactor electricity
Stream ( a )
Output reactor inductance ( μ
H)
0.75 3.4 8.0 2.1 2100
1.5 4.8 4.0 3.8 2100
2.2 6.2 3.2 5.1 1450
4.0 9.6 2.0 9 1100
5.5 14 1.5 13 800
7.5 18 1.2 17 650
11 26 0.8 25 330
15 35 0.6 32 250
18.5 41 0.5 37 200
22 50 0.42 45 180
30 62 0.32 60 90
37 80 0.26 75 80
45 96 0.21 91 60