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Automatic transfer with the transfer control device 3KC ATC5300
The transfer control device 3KC ATC5300 is equipped with two motor-driven circuit breakers and serves as a transfer system that automatically or manually switches between two power supply systems in low-voltage power distribution applications.
In particular, the transfer control device 3KC ATC5300 is deployed where a power failure is especially critical, e. g. in hospitals, in conjunction with UPS systems, and for industrial processes.
Mode of operation
The transfer control device 3KC ATC5300 controls the transfer between the main and standby power supplies fully automatically, while incorporating 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 delivering the required power supply quality. The devices switches back to the main power supply taking into consideration the set parameters once the required power supply quality is available again. 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 transfer control device 3KC ATC5300 can control air circuit breakers, molded case circuit breakers, switch disconnectors or contactors. The circuit breakers are controlled via the related motorized operating mechanisms.
Setting parameters and monitoring with the SENTRON ATC software
In addition to operation and parameterization on-site, you can also monitor and set the parameters of the controller using the SENTRON ATC software. The software offers a high level of convenience and quick settings when connecting generators.
Measurement variables
The transfer control device 3KC ATC5300 gathers and monitors the following measured variables:
|
Measured variable |
Default setting |
Limit value setting |
Delay time |
Can be deactivated |
|
|---|---|---|---|---|---|
|
Rated system voltageUn |
V AC |
100 ... 690 |
70 % ... 98 % |
0.1 s ... 900 s |
-- |
|
102 % ... 120 % |
0.1 s ... 900 s |
||||
|
Voltage asymmetry |
% |
1 % ... 20 % |
0.1 s ... 900 s |
||
|
Phase failure |
% |
60 % ... 85 % |
0.1 s ... 30 s |
||
|
Direction of rotation |
Left, right |
-- |
-- |
||
|
Frequency |
Hz |
50/60 |
80 % ... 100 % |
0.1 s ... 900 s |
|
|
101 % ... 120 % |
0.1 s ... 900 s |
||||
|
Battery voltageUb |
V DC |
12/24/48 |
70 % ... 100 %2) |
0 ... 60 s |
|
|
110 % ... 140 %2) |
1) Hysteresis value for retransfer permission
2) Only warning, no switchover
Yes
-- No