Application planning
5.9 Use in transfer control system
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
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Use in transfer control system
The 3KC ATC5300 transfer control device (automatic transfer control device) together with
two 3VL molded case circuit breakers with motorized operating mechanism (MO), forms the
transfer control system that can be used to switch automatically or manually between two
low-voltage power distribution systems.
Overview of the 3KC ATC5300 transfer control device
The ATC5300 controls the transfer between two power supplies fully automatically, while
taking account of set limit values and delay times. It detects fluctuations occurring in the
main power supply quickly and switches to the standby power supply. The control device
only switches to the standby power supply after it has ensured that the standby supply is
providing the required quality. The devices switch back to the main power supply, taking into
consideration the set parameters, once the required quality has been restored. If the standby
power supply and/or the main power supply is fed by a generator, the control device also
offers a wide range of settings, such as a generator lead time, generator delay time, and
generator start test at specified times.
The ATC5300 can be used for the following applications:
● Supply of UPS (uninterruptible power supply) systems
● Emergency supply of public buildings, hotels and airports
● Supply of data centers and communication systems
● Supply of industrial processes requiring a high level of operational continuity.
Note
You can find more detailed information on the 3KC ATC5300 transfer control device in
the Industry Mall (www.siemens.com/industrymall).
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