Siemens SIPROTEC 4 7VK61 - Function Description; Information List

Function Description
The test programs shown in Table 2-7 are available. The single-pole tests are of course only possible if the
device you are using is capable of single-pole tripping.
The output alarms mentioned must be allocated to the relevant command relays that are used for controlling
the circuit breaker coils.
The test is started using the operator panel on the front of the device or using the PC with DIGSI. The proce-
dure is described in detail in the SIPROTEC 4 System Description. Figure 2-72 shows the progression over time
of an open-close test cycle. The set times are those stated in Section 2.1.3.1 Setting Notes for “Trip Command
Duration” and “Circuit Breaker Test”.
Where the circuit breaker auxiliary contacts indicate the status of the circuit breaker or of its poles to the
device via binary inputs, the test cycle can only be initiated if the circuit breaker is closed.
The information regarding the position of the circuit breakers is not automatically derived from the position
logic according to the above section. For the circuit breaker test function (auto recloser) there are separate
binary inputs for the switching status feedback of the circuit breaker position. These must be taken into
consideration when allocating the binary inputs as mentioned in the previous section.
The alarms of the device show the respective state of the test sequence.
Table 2-7 Circuit breaker test programs
Serial No. Test Programs Circuit Breaker Output Indications (No.)
1 1-pole TRIP/CLOSE-cycle
phase L1
CB 1
CB1-TESTtrip L1 (7325)
2 1-pole TRIP/CLOSE-cycle
phase L2
CB1-TESTtrip L2 (7326)
3 1-pole TRIP/CLOSE-cycle
phase L3
CB1-TESTtrip L3 (7327)
4 3-pole TRIP/CLOSE-cycle CB1-TESTtrip 123 (7328)
Associated close
command
CB1-TEST CLOSE (7329)
[ein-aus-pruefzyklus-wlk-170902, 1, en_GB]
Figure 2-72 TRIP-CLOSE test cycle
Information List
No.
Information Type of
Informa-
tion
Comments
- CB1tst L1 - CB1-TEST trip/close - Only L1
- CB1tst L2 - CB1-TEST trip/close - Only L2
- CB1tst L3 - CB1-TEST trip/close - Only L3
- CB1tst 123 - CB1-TEST trip/close Phases L123
7325 CB1-TESTtrip L1 OUT CB1-TEST TRIP command - Only L1
7326 CB1-TESTtrip L2 OUT CB1-TEST TRIP command - Only L2
7327 CB1-TESTtrip L3 OUT CB1-TEST TRIP command - Only L3
7328 CB1-TESTtrip123 OUT CB1-TEST TRIP command L123
7329 CB1-TEST close OUT CB1-TEST CLOSE command
7345 CB-TEST running OUT CB-TEST is in progress
2.8.2.1
2.8.2.2
Functions
2.8 Function Control and Circuit Breaker Test
SIPROTEC 4, 7VK61, Manual 159
C53000-G1176-C159-5, Edition 05.2018