System Manual V2 – MOVITRAC® B
133
6
Line chokes
Project Planning
6.12
Line chokes
6.12.1 1-phase
Use is required under the following circumstances:
•
Mains inductances of less than 100 μH per branch
•
Using line chokes is required when operating several units that are switched on
simultaneously. The line choke limits overvoltages caused by the switching.
Use is optional in the following instances:
•
Reduction in the supply system current harmonics
•
Support for overvoltage protection
6.12.2 3-phase
Using line chokes is required when operating more than 4 units that are switched on
simultaneously. The line choke limits overvoltages caused by the switching.
Use is optional for supporting overvoltage protection.
6.13
Electromagnetic compatibility EMC
MOVITRAC
®
B frequency inverters are components of machines and systems. They
comply with the EMC product standard EN 61800-3
Variable-speed electrical drives.
If you want to equip the machine / system with frequency inverters compliant with the
EMC directive 89/336/EEC: Adhere to the notes on EMC compliant installation.
Following the relationship between new and old limit classes:
New limit class according to EN 61800-3
Previous limit class according to EN 55011/55014
C2
A
C1
B
Summary of Contents for MOVITRAC MC07B0037-2A3-4-00
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