Connecting Shielded Three-Phase Current Cables - Siemens SINAMICS G150 Operating Instructions Manual

Electrical installation
4.7 Power connections
Note
Shielded cables
The PROTOFLEX-EMV-3 PLUS shielded cable recommended by Siemens is the protective
conductor and comprises three symmetrically-arranged protective conductors. The individual
protective conductors must each be provided with cable eyes and be connected to ground.
The cable also has a concentric flexible braided copper shield. To comply with EN 61800-3
regarding radio interference suppression, the shield must be grounded at both ends with the
greatest possible surface area.
On the motor side, cable glands that contact the shield with the greatest possible surface
area are recommended for the terminal boxes.
4.7.3

Connecting shielded three-phase current cables

A good shield connection is achieved by connecting the shields in the converter cabinet
through a large surface area to the EMC shield rail using EMC shield clamps (PUK shield
clamps). EMC shield clamps (PUK shield clamps) are provided in the accessories pack to
connect to the shield rail.
Figure 4-10
Note
Detailed engineering information for connected shielded three-phase cables with
concentrically arranged shields is provided in the "SINAMICS Low Voltage Configuration
Manual" on the customer DVD supplied with the equipment.
84
Connecting shields in the converter at the EMC shield rail using EMC shield clamps
(PUK shield clamps)
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A