Siemens SENTRON ATC6500 - Application B: 2 S - 1 T - PL

Applications
3.1 Transfer control
3KC ATC6500 transfer control device
22 Manual, 05/2019, L1V30538268002A-01
3.1.4.2 Application B: 2S - 1T - PL
SRC1 (kVA) > SRC2 (kVA)
In this application three motor-driven circuit breakers are used. A distinction is made
between prioritized load and non-prioritized load (NPL).
On failure of the prioritized sources (in this case, Source 1), only the prioritized load is
supplied by the secondary source (in this case, Source 2). In normal circumstances (Source
1 available) both sources are supplied by the main network.
The states can be obtained from the table:
Source 1 (SRC1)
Source 2 (SRC2)
Breaker 1 (BRK 1)
Breaker 2 (BRK 2)
Tie breaker (TB)
0
0
Open
Open
Open
0
1
Open
Closed
Open
1
1
Closed
Open
Closed
0 = Infeed source not available
1 = Infeed source available
Note
In this case Source 1 is regarded as the main source. The transfer can be influenced by
modifying the source priori
ty.
See also
Parameterization (Page 155)
Transfer (Page 227)