Seg WI Series User Manual

4.1.4
Control of a Switchgear
The trip impulse output of the WIC1 (see ╚═▷ “3.7 Outputs (Trip Coil, Flag Indicator, Relay
Output)”) needs to be connected to a switchgear that is responsible for clearing a fault that
is detected by the WIC1. This is usually a circuit breaker, but depending on the particular
application, other types of switchgear are in common.
DANGER!
Miscon󰊟guration of switchgear could result in death or serious injury. This e. g. is the case
when opening a disconnector under load or when switching a ground connector to live
parts of a system.
The commissioning engineer is responsible for the correct con󰊟guration and wiring of the
switchgear, including documentation of all these aspects.
A correct con󰊟guration of all switchgear is an indispensable precondition for the proper
functioning of the protective device.
4.1.4.1 Switchgear Con󰈛guration
Criteria for Determining the Switchgear Position
The position indication is needed by the WIC1 to get (evaluate) the information about the
current status /position of the breaker. This information is essential for the modules »Switch
Onto Fault« (╚═▷ “4.10 SOTF - Switch Onto Fault”) or the »Circuit Breaker Monitoring« (╚═▷
“4.12 CBF – Circuit Breaker Failure [50BF, 62BF]”).
It is possible to select for the switchgear states CLOSE (“ON”) and OPEN (“OFF”),
independent of each other, whether these states shall be detected based on phase currents
or based on positioning indicator signals (or both). For WIC1 variants without con󰊟gurable
Digital Inputs, of course, only the current-based detection is applicable.
•
Setting of the detection criterion for the CLOSE (“ON”) and OPEN (“OFF”) states:
•
[Protection Para / Breaker & Trip] »Meth.Detect.Bkr.Pos.« =
Options:
◦ “Aux-Based” — Signal-based detection.◦
(This option is available only with a WIC1‑4 featuring con󰊟gurable Digital
Inputs.)
◦ “Current-Based” — Current-based detection.◦
◦ “Current and Aux” — Both criteria are used.◦
(Of course, this option, too, is available only with a WIC1‑4 featuring
con󰊟gurable Digital Inputs.)
Wiring (only WIC1‑4 with con󰃰gurable Digital Inputs)
In case the position indication is based on signal inputs (╚═▷ “Wiring (only WIC1‑4 with
con󰊟gurable Digital Inputs)”), the particular signals have to be assigned:
• The signal for the switchgear state CLOSE (“ON”) – if wired/required – can be•
assigned to:
131WIC1WIC1-1.0-EN-MAN
4 Protective Elements
4.1.4 Control of a Switchgear

Seg WI Series Specifications

General

Brand	Seg
Model	WI Series
Category	Relays
Language	English