Open Pole Detektor - Siemens SIPROTEC 4 7VK61 Manual

•
>CB1 3p Closed (No. 410) for the series connection of the NO auxiliary contacts of the CB,
•
>CB1 3p Open (No. 411) for the series connection of the NC auxiliary contacts of the CB,
•
>CB1 Pole L1 (No. 366) for the auxiliary contact of pole L1,
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>CB1 Pole L2 (No. 367) for the auxiliary contact of pole L2,
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>CB1 Pole L3 (No. 368) for the auxiliary contact of pole L3,
2.8.1.3

Open Pole Detektor

Besides the evaluation of the CB auxiliary contacts, single-pole dead times can be detected and reported via
the Open Pole Detector. This, however, requires the three-pole connection of currents and voltages. The corre-
sponding protection and monitoring function can respond. The following figure shows the logic structure of
an Open Pole Detector.
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
2.8 Function Control and Circuit Breaker Test
Functions
153