Engineering Guide CDA3000
DE
EN
FR
6
Selection of supplementary components
6.1
Line choke ...............................................................6-2
6.1.1
Effect of the line choke ........................................6-2
6.1.2
Operation with reactive current compensation
system .................................................................6-4
6.1.3
Technical data of line chokes LR3x.xxx ................6-6
6.1.4
Assignment of line choke to inverter module ........6-7
6.2
Motor choke ............................................................6-8
6.2.1
Technical data of the motor chokes .....................6-8
6.2.2
Assignment to the inverter modules ...................6-10
6.3
Braking resistors ...................................................6-12
6.3.1
Technical data of series BRxxx, xx-xx ................6-12
6.3.2
Assignment to inverter modules CDA3000 .........6-13
6.4
Radio interference suppression filter ...................6-14
6.4.1
Technical data of RFI filters EMC34.xxx ..............6-14
6.4.2
Permissible motor cable length with internal
RFI filter .............................................................6-15
6.4.3
Permissible motor cable length with internal
and external RFI filter .........................................6-16
6.4.4
Permissible motor cable length with external
RFI filter .............................................................6-16
7
System installation
7.1
Heat discharge from the switch cabinet ................7-2
7.1.1
Basic terms for calculation ...................................7-2
7.1.2
Effective switch cabinet surface ...........................7-3
7.1.3
Calculation of filter fans .......................................7-4
7.1.4
Calculation of heat exchangers ............................7-5
7.2
Heat transfer by heat conductance ........................7-7
A
Formula bank
A.1
Mathematical symbols ........................................... A-2
A.1.1
SI units ................................................................A-2