6.6.2. SD700 compliance
SD700 variable speed drives are designed for industrial (second environment) use. The use of radio
frequency interference filters (RFI filters) and dV/dt filters as standard, and the correct installation
following the recommendations within this manual, permits to achieve compliance with C3 category
defined in IEC/EN 61800-3.
Optionally the SD700 non-floating earth variable speed drive could be installed in residential areas
(first environment) by employing optional RFI filters that permits to achieve compliance with C2
category.
SD700 is not a retail unit, which is neither a plug in device nor a movable device and it is intended
to be installed and commissioned by qualified personnel. Therefore, C1 category will not be
required.
SD700 with floating earth configuration can be installed in Industrial (Second Environment) IT grids.
Although they do not integrate normal RFI filters, following the installation recommendation within
this manual and its dV/dt filter as standard, permits to achieve compliance with C3 category defined
in IEC/EN61800-3.
6.6.3. Connection
SD700 do not require the use of shielded motor cable to achieve compliance with C3 category,
when a correct installation is made. Wiring and Installation recommendations are included in
sections “6.3 Power Connection and wiring” and “6.4 Ground connection”.
It is recommended to implement a 360º contact that creates an effective shield bonding in both the
SD700 cabinet and the motor terminal box. As an example, it could be installed EMC cable glands
as shown in the next figure.
Figure 6.16 Correct output motor cables shield bonding
It is recommended for control signals to use shielded cable and to follow recommendations included
in section ”7.1 Wiring recommendations”.
CAUTION
Select communication and control system according to the drive EMC environment. Otherwise,
systems could suffer from interferences due to a low EMS level.
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