Siemens 6MD86 - Page 242

By routing the Trip/open cmd. 3-pole signals to 1 or 2 binary outputs, you can carry out 1, 1.5, and 2-
pole activations of the circuit breaker. You can find a detailed description of this in chapter 6.2.2.3 Connection
Variants of the Circuit Breaker.
i
i
NOTE
Do not confuse these 1-pole, 1.5-pole, and 2-pole activations of the circuit breaker with 1-pole or 3-pole
tripping of the circuit breaker.
Routing for Analysis of the Circuit-Breaker Switch Position
For certain functions of the device, it is useful to detect the circuit-breaker switch position via its auxiliary
contacts. These are for example:
•
Circuit-breaker position recognition function block
•
Circuit-breaker failure protection function
•
Control function block
The operating principle of the auxiliary contacts is described in the individual functions.
Depending on the application, Siemens recommends the following different interfaces for the auxiliary
contacts:
•
The device performs protection and automatic reclosing functions without any control functionality.
For optimal performance of the protection and automatic reclosing functions, the Pole closed informa-
tion should be acquired selectively via the auxiliary contacts.
[loauswer-081210-01.tif, 1, en_US]
Figure 5-44 Recommended Analysis of the Circuit-Breaker Switch Position when Used as a Protection
Device
Make the routing to the binary input as G_ (closed). In the following figure, routing is executed as CH, in
which H stands for active with voltage.
[scpolges-081210-01.tif, 1, en_US]
Figure 5-45 Pole Closed: Routing for the Acquisition of Pole Closed Information
Function-Group Types
5.6 Function-Group Type Circuit Breaker, 1-/3-Pole
242 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017