GJR5252300R3101 07AC91F ABB distributed control system industrial DCS module card

Description

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The SOR control and monitoring Test Unit helps ensure that the
various versions of SACE Emax opening releases are running
smoothly, to guarantee a high level of reliability in controlling
circuit-breaker opening.
Under particularly severe operating conditions or simply for remote control of the circuit-breaker, the opening release is widely
used as an accessory for the SACE Emax series of air circuitbreakers.
Keeping all the functions of this accessory is a necessary condition to guarantee a high level of safety in the installation: it is
therefore necessary to have a device available which cyclically
checks correct operation of the release, signalling any malfunctions.
The SOR control and monitoring Test Unit ensures the continuity of opening releases with a rated operating voltage between
24 V and 250 V (AC and DC), as well as the functions of the
opening coil electronic circuit are verified.
Continuity is checked cyclically with an interval of 20s between
tests.
The unit has optic signals via LEDs on the front, which provide
the following information in particular:
– POWER ON: power supply present
– YO TESTING: test in progress
– TEST FAILED: signal following a failed test or lack of auxiliary
power supply
– ALARM: signal given following three failed tests.
Two relays with one change-over are also available on board
the unit, which allow remote signalling of the following two events:
– failure of a test – resetting takes place automatically when the
alarm stops )
– failure of three tests – resetting occurs only by pressing the
manual RESET on the front of the unit)
There is also a manual RESET button on the front of release.
The SOR Test Unit can not be used with SOR permanently powered.