Siemens SENTRON ATC6500, Руководство пользователя

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Applications
3.1 Transfer control
3KC ATC6500 transfer control device
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Manual, 05/2019, L1V30538268002A-01
3.1.2 Network/generator application
For the network/generator application the load is normally connected to the main source
(Source 1). Following a deviation in the voltage or frequency, and after the defined delay
time, a start signal is sent to the generator (Source 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 ATC6500 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 155).
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.
3.1.4 Load management with the ATC6500
Apart from applications with two switching devices, the ATC6500 can additionally control one
tie breaker. The ATC6500 has five predefined application settings.
The application must be selected in accordance with with the requirement in menu P02
under the parameter P02.01 (see chapter P02 – General (Page 162)).
The following applications can be implemented: