Nidec Leroy-Somer Powerdrive MD Smart, Руководство по интеграции

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CONNECTIONS - CABLING
Powerdrive MD Smart Integration Guide
5751 en - 2021.10 / e
CONNECTIONS
CABLING
4.1.2 - Ground connections
Metal masses must be mechanically interconnected with the largest possible electrical contact surface. In any case, the ground
links intended to ensure the protection of people, by connecting the metal masses to the ground by a cable, can not replace the
ground connections (see IEC 61000-5-2).
The immunity and the level of radio frequency emission are directly related to the quality of the ground connections.
4.1.2.1 - Equipotential protection or EP circuit
The EP terminal shall be located close to the terminals of the phase conductors. It must be marked with the letters EP. The minimum
section is given by the table below, it cannot be less than 10 mm².
Phase conductor
section (mm²)
Minimum conductor protection
section (mm²)
S ≤ 16 S
16 <S ≤ 35 16
S > 35 S / 2
The minimum section is given for copper protection conductors.
It is recommended that shielding be carried out by collar, flange or calliper.
Here is an example of the connection of the equipotential protection circuit:
V
U
W
PE
L1 L2 L3 PE
L1 L2 L3 PE
U V W
PE
DC + DC -
PE
* * *
PE
24 Vdc
PE
See section 2.7.7
Control module
for power supply
Shielding clamp