Adjustment To Different Types Of Networks - HEIDENHAIN TNC 410 M Technical Manual

4.7.3 Adjustment to Different Types of Networks

4 – 32
The following basic circuit diagrams illustrate the connection of non-
regenerative inverter systems. The same procedure also applies for adjusting
regenerative inverter systems to different types of networks (also with
respect to the circuit of the isolating transformer where necessary). See also
the information provided in "Connection to Different Types of Networks" on
page4 – 6 and "Adjusting the Line Voltage by Means of a Transformer" on
page4 – 8.
The HEIDENHAIN inverter systems can be directly connected to TN networks,
without need for an isolating transformer.
Danger
All other networks (e.g. with grounded external line, asymmetrical
networks) require an isolating transformer for adjusting the line voltage,
even if these networks are not explicitly mentioned here. The star point
must then be connected to ground via a central grounding point outside the
machine.
HEIDENHAIN Technical Manual for Inverter Systems and Motors