Woodward High PROTEC MRU4, Руководство пользователя

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Switchgear/Breaker – Manager
Assignment of Position Indications
The position indication is needed by the device to get (evaluate) the information about the current status /position of
the breaker. The switchgears' position is shown in the devices display. Each position change results in a change of
the switchgear symbol.
For the detection of a switchgear's position always two separate Aux contacts are
recommended! If only one Aux contact is used, no intermediate or disturbed
positions can be detected.
A reduced transition supervision (time between issue of the command and position
feedback indication of the switchgear) is also possible by one Aux contact.
In the menu [Control/Bkr/Pos Indicators wiring] the assignments for the position indications have to be set.
Detection of switchgear position with two Aux contacts – Aux ON and Aux OFF (recommended!)
For detection of position the switchgear is provided with Aux contacts (Aux ON and Aux OFF). It is recommended to
use both contacts to detect intermediate and disturbed positions too.
The protection device continuously supervises the status of the inputs
»Aux ON-I« and »Aux OFF-I«.
These signals are validated based on the supervision timers »
t-Move ON« and »t-Move OFF« validation functions.
As a result, the switchgear position will be detected by the following signals:
Pos ON
Pos OFF
Pos Indeterm
Pos Disturb.
Pos (State=0,1,.2 or 3)
344 MRU4 DOK-HB-MRU4-2E