Power Supply; Cables; Power Cables - INVT Goodrive270 Series Operation Manual

Goodrive270 series VFD for fan and pump
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D.3 Power supply
See chapter 4 Installation guidelines.
 Ensure that the voltage class of the VFD is consistent with that of the grid.
D.4 Cables
D.4.1 Power cables
The sizes of the input power cables and motor cables must comply with local regulations.
 The input power cables and motor cables must be able to carry the corresponding load currents.
 The maximum temperature margin of the motor cables in continuous operation cannot be lower
than 70° C.
 The conductivity of the PE grounding conductor is the same as that of the phase conductor, that
is, the cross-sectional areas are the same.
 For details about the EMC requirements, see Appendix B Technical data.
To meet the EMC requirements stipulated in the CE standards, you must use symmetrical shielded
cables as motor cables (as shown in the following figure).
Four-core cables can be used as input cables, but symmetrical shielded cables are recommended.
Compared with four-core cables, symmetrical shielded cables can reduce electromagnetic radiation
as well as the current and loss of the motor cables.
Name
harmonics, and of which the rated sensitive current for
one VFD is larger than 30 mA.
Accessories used to improve the power factor on the
Input reactor input side of the VFD, and thus restrict high-order
harmonic currents.
Accessory that restricts the electromagnetic interference
generated by the VFD and transmitted to the public grid
Input filter
through the power cable. Try to install the input filter near
the input terminal side of the VFD.
Accessory used to restrict interference generated in the
Output filter wiring area on the output side of the VFD. Try to install
the output filter near the output terminal side of the VFD.
Accessory used to lengthen the valid transmission
Output distance of the inverter, which effectively restrict the
reactor transient high voltage generated during the switch-on
and switch-off of the IGBT module of the inverter.
Description
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Optional peripheral accessories