Siemens siprotec 7SD5 User Manual

2 Functions
402
7SD5 Manual
C53000-G1176-C169-1
• „>CB1 3p Closed“ (No. 410) for the series connection of the NO auxiliary con-
tacts 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,
• „>CB1 Pole L2“ (No. 367) for the auxiliary contact of pole L2,
• „>CB1 Pole L3“ (No. 368) for the auxiliary contact of pole L3.
2.23.1.3 Open Pole Detector
Single-pole dead times can be detected and reported via the Open Pole Detector. The
corresponding protection and monitoring functions can respond. The following figure
shows the logic structure of an Open Pole Detector.
Figure 2-177 Logic diagram of the Open Pole Detector
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Siemens siprotec 7SD5 Specifications

General

Brand	Siemens
Model	siprotec 7SD5
Category	Relays
Language	English