Instruction and Operating Manual
TA-U1...U280
Misprints and technical changes reserved
34
4.1.3 Conditions for Grounding
All metal frames have to be connected to ground by their own. Make a well defined path for high ground currents.
For short-circuits to frame and leakage currents of filter components exists minimum cross-sections.
If one or two phases become disconnected the EMC filter can produce leakage currents up to 100mA. Filters and
devices with build in filters have to be connected to ground before mains.
To clamp high frequency currents it is required to take some care along to the advice made above about grounding:
All grounding leads should be as short as possible. Poor connections and loops of cable will act as aerials and pick
up stray radiated emissions. The screen should be connected to ground by removing the coat pressing the screen
with a clip to the backplate bonded ground. Do not use a "pig tail" to connect the screen of the cable. The screen
should lead into the device. On the motor it is possible to connect the screen with a EMC screwing. On the regulator
the screen will be surrounded by a metal clip pressing it on mounting plate or grounding bar.
Make ground connection of the regulator by a wide plain on the backplate of the wiring cabinet. It is preferable to use
a galvanized backplate not sealed with varnish. This concept does not replace the national safety codes for groun-
ding.
4.1.4 International Protection
Suit protection class IP20 for switch cabinet mounting.
screened motor cable
with clip
TAE-Drive