trunking.
1. Protective Earth Conductor.
Conductor size for enclosure &
Back plate must comply with the local electrical
standards. minimum 10mm².
2. Back plate. Galvanized steel (unpainted).
3. Ferrite core / Output reactor.
Ferrite cores can be used to reduce
radiated noise due to long motor cables.
If ferrite core is used loop motor wires, 3times
round the core. Install core as close to the
inverter as possible
Output reactors provide additional
benefit of reducing dv/dt for protection of motor
windings.
4. Metal Cable clamp no more than 150mm from
the inverter.
Note: If no enclosure & back plate is used then
connect the cable shield by a good 360 º
termination to the Inverter output terminal E.
5. Screened (Shielded four core cable).
6. Separate Protective Earth wire, routed outside
motor cable separated by at least 100mm.
Note: - this is the preferred method
especially for large output cables and long
length.
Multi-core screened (3 core & protective
earth) can be used for small power and short
length.
7. Connect the cable shield by a good
360º termination and connect to themotor
protective earth terminal.
This link must be as short as possible.
8. Motor Earth terminal (Protective Earth).
