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Applications
The following chapter contains information on:
● Transfer control
● Controlling the switching devices
● Voltage measurement
3.1
Transfer control
Fundamental information on the topic of transfer control is provided below.
Transfer with switch disconnectors / transfer switching equipment with motor operator
Switching devices with motor operator are required for this application. These can make
short-circuit currents and conduct them to a limited extent (1 sec. current), but cannot break
them.
Transfer with circuit breakers with motor operator
The transfer in this case is performed by means of motor-driven circuit breakers. These can
make and conduct short-circuit currents, and also break them in the event of an overload.
The ATC6500 functions as transfer switching equipment in connection with two Siemens
3VA molded case circuit breakers with motor operators, and in connection with two 3WL or
3WT air circuit breakers.
3.1.1
Network/network application
In the network/network application the load is normally connected to the main supply source
and is switched to the secondary supply source if an anomaly occurs in the main supply or if
an external signal is issued. By means of various setting options (interlock time, etc.) the
transfer behavior can be defined on a customer-specific basis.
You can find more information on this in the chapter Parameterization (Page 155).
3KC ATC6500 transfer control device
Manual, 05/2019, L1V30538268002A-01
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