Siemens SIPROTEC 4 7VK61 Manual page 71

[logikdia-ip-stufe-amz-iec-wlk-310702, 1, en_GB]
Figure 2-17
1) The output indications associated with the pickup signals can be found in
2) The output indications associated with the trip signals can be found in
End fault stage
A further overcurrent stage is the stub protection. It can, however, also be used as a normal additional definite
time overcurrent stage, as it functions independently of the other stages.
A stub fault is a short-circuit located between the current transformer set and the line isolator. It is of partic-
ular importance with the 1
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
Logic diagram of the Ι stage (inverse time overcurrent protection), for example IEC character-
P
istics
1 / circuit breaker arrangements.
2
Functions
2.3 Overcurrent protection (optional)
Table 2-3
Table 2-4
71