Network/Generator Application; Generator/Generator Application - Siemens SENTRON ATC6300 Manual

Applications
3.1 Transfer control
3.1.2

Network/generator application

For the network/generator application the load is normally connected to the main source
(Line 1). Following a deviation in the voltage or frequency, and after the defined delay time, a
start signal is sent to the generator (Line 2). If the generator supplies the desired voltage, the
load is transferred to the secondary source (generator) until the main source supplies the
desired supply quality.
The load is then transferred back to the main source and the generator is kept in operation
without load to allow it to cool (duration can be set by user). The ATC6300 sends a start /
stop command to the generator through a relay output and can receive digital signals from
the generator indicating its status (generator ready, OK to accept load, etc.) through
programmable inputs.
An automatic generator test can be programmed, i.e. the generator can be started at set
times to check its correct operation, even if the network is within the thresholds.
This is done by setting the execution interval, starting time, days of the week on which the
test is to be carried out, duration, etc. More information on the various setting options can be
found in chapter Parameterization (Page 115).
3.1.3

Generator/generator application

In this case two generators are controlled, each with a start-stop relay and feedback signals,
if available. In this application a rotation between generators can be programmed, i.e. the
load can be switched from one to the other at regular intervals, with the purpose of sharing
out the generator work equally. It is also possible to set the time of day when rotation is to
occur, so that the load supply is cut off at a specified time. In case of a problem in either
generator, the load is always transferred to the one in standby mode.
The following simplified diagram illustrates the possible applications:
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3KC ATC6300 transfer control device
Manual, 03/2018, L1V30535632002A-01