Functions
2.8 Function Control
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
150
2.8
Function Control
2.8.1
General
The function control is the control centre of the device. It coordinates the sequence of the protection and ancil-
lary functions, processes their decisions and the information coming from the power system.
Applications
• Line energisation recognition,
• Processing of the circuit breaker position(s),
• Open Pole Detector,
• Fault detection logic,
• Tripping logic.
2.8.1.1
Line energisation recognition
During energisation of a protected object, several measures may be required or desirable. Following manual
closing onto a short-circuit, for instance, immediate re-opening of the circuit breaker is usually desired. For most
short-circuit protection functions, at least one stage can be selected to trip without delay following energisation
as described in the corresponding sections.
The manual closing command must be indicated to the device via a binary input. To be independent of the in-
idvidual manual closing operation, the command is set to a defined length in the device (adjustable with the
address
1150
SI Time Man.Cl
). This setting can only be changed in DIGSI at
Display Additional Settings
.
Figure 2-57 shows the logic diagram.
Figure 2-57
Logic diagram of the manual closing procedure
Summary of Contents for Siprotec 7VK61
Page 8: ...Preface SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 8 ...
Page 14: ...Contents SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 14 ...
Page 316: ...Literature SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 316 ...
Page 328: ...Glossary SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 328 ...