Functions
2.3 Overcurrent protection (optional)
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
72
Switching onto a fault
To achieve fast tripping of the circuit breaker in the event of an earth fault, the manual CLOSE detection function
can be used. The time overcurrent protection can then trip three-pole without delay or with a reduced delay. It
can be determined via parameter settings for which stage(s) the instantaneous tripping following energisation
applies (see also the logic diagrams Figure 2-12, 2-13 and 2-15).
Pickup logic and tripping logic
The pickup signals of the individual phases (or the ground) and of the stages are linked in such a way that both
the phase information and the stage which has picked up are output (Table 2-3).
Table 2-3
Pickup signals of the individual phases
For the tripping signals (table 2-4) the stage which caused the tripping is also output. If the device has the option
to trip single-pole and if this option has been activated, the pole which has been tripped is also indicated in case
of single-pole tripping (refer also to Section 2.8.1 „Tripping Logic of the Entire Device“).
Internal Annunciation
Figure
Output Annunciation
No
I
>> PU L1
I
> PU L1
I
p PU L1
I
>>> PU L1
„O/C Pickup L1“
7162
I
>> PU L2
I
> PU L2
I
p PU L2
I
>>> PU L2
„O/C Pickup L2“
7163
I
>> PU L3
I
> PU L3
I
p PU L3
I
>>> PU L3
„O/C Pickup L3“
7164
I
>> PU E
I
> PU E
I
p PU E
I
>>> PU E
„O/C Pickup E“
7165
I
>> PU L1
I
>> PU L2
I
>> PU L3
I
>> PU E
„O/C PICKUP I>>“
7191
I
> PU L1
I
> PU L2
I
> PU L3
I
> PU E
„O/C PICKUP I>“
7192
I
p PU L1
I
p PU L2
I
p PU L3
I
p PU E
„O/C PICKUP Ip“
7193
I
>>> PU L1
I
>>> PU L2
I
>>> PU L3
I
>>> PU E
„I-STUB PICKUP“
7201
(All pickups)
„O/C PICKUP“
7161
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 ...