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English to Portuguese translations [PRO] Tech/Engineering - Electronics / Elect Eng
English term or phrase:Castell key
Castell key/Castell Solenoid switch
3.1.7 Functionality Test (Busbar Earthing)
Check operation of Castell Solenoid switch for each bus section with
relevant VCB’s open and racked out to the test position
Remove Castell key and check relevant VCB’s cannot close
Insert Castell key into earth switch lock and operate earth switch
Check Castell key cannot be removed with earth switch closed
3.1.7 Functionality Test (Thruster Cubicle Door Entry)
Check operation of Castell Solenoid switch for each Thruster Feeder section with VCB open and racked out to the test position and circuit earth switch closed
Remove Castell key and check VCB cannot close or racked in.
(N.B. This Castell key when removed ensures the supply to the Thruster drive cubicle is isolated and earthed. The key is then inserted into the Thruster drive cubicle door lock and turned allowing access to the drive and trapping the key until the door is closed again)