Siemens SIRIUS 3RT Series System Manual page 351

General data
Permissible mounting position
Insulation strength at 50/60 Hz
(main/control circuit to floor)
These products are Class A products. Their use in residential areas can cause radio frequency interference. In this
1)
case, the user can be held liable for taking additional measures to attenuate such interference.
Running star-connected three-phase motors (particularly < 1 kW) with electromechanical contactors can cause
2)
significant electromagnetic interference. Such interference can cause solid-state reversing contactors being used in the
vicinity to malfunction. Provision should be made for appropriate EMC surge suppressors on the sources of interference.
Suitable surge suppressors are described in Chapter 3 of Catalog LV1.
For solid-state reversing contactors, the following applies: To maintain the values a 3TX7 462-3L surge suppressor (see
3)
Catalog LV1) should be used between phases L1 and L3, as close as possible to the reversing contactor.
Reference
More information ...
About the environments in which solid-state
switching devices are used
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
SIRIUS 3RF34 solid-state switching devices
V rms 4000
Can be found in the chapter titled ...
Application environment (Page 319)
3.11 Technical data
351