Inverter Connection - Riello RS 70/EV Installation, Use And Maintenance Instructions

4.9.1

Inverter connection

Following, it is reported an example how to con-
nect the Inverter.
For further information, please refer to the relevant
Inverter instruction manual.
WARNING
Typical installation
PE L1 L2/N
PE
Line
FILTER
Load
Cable length
as short as possible
Ground bonds
(remove any paint)
METAL PLATE
Installation
Ground bonds
(remove any paint)
INVERTER
PE L1 L2 U VWPE
S8203
Motor cable
screened
M
3~
Fig. 25
Treatment of cables
Countermeasures against cable noise
The treatment of cables is the most important countermeasure.
The machinery manufacturers are requested
to examine the current structure of the cable lead - in.
 Use cables with woven screen
 The screen of the cable should be earthed with a large area.
 It is desirable to earth the screen of the cable by clamping the
cable to the earth plate.
 The screen must be earthed on both side of the cable (take
care for good earthing system).
S8201
Ground clamp
Examples:
Number 1,2,3 show not proper ways to earth a cable screen.
S8202
27
Ground bonds
(remove any paint)
Grounding plate
Fig. 26
Fig. 27
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