© ALSTOM 2010. All rights reserved. Informat
this document is indicative only. No
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
change without notice. Reproduction, use or disclosure to
third parties, without express writt
breaker maintenance operations
TOR HAS BEEN DISCHARGED AND EARTHED IN A DURABLE WAY.
Check condition of capacitors as follows :
clean capacitor insulating surfaces using a dry cloth,
ng torque of capacitor mountin
sure, if need be, change sealing washers,
make sure that there are no traces of oil or moisture on the capacitors,
Check condition of transformers as follows :
clean transformer insulating surfaces using a dry cloth,
check electrical connections on CT terminal blocks and cubicle,
check attachment of CT to the enclosure, tightening to supporting stud
for CT with an electrostatic shield.
Check condition of potential transformers as follows :
clean potential transformer insulating surfaces using a dry cloth,
check electrical connections on PT terminal blocks and cubicle,
check attachment of potential transformer, tightening torque,
inspect, the attachments of the braid connection of potential transformer.
Check condition of lighting arrester as follows :
clean lightning arrester insulating surfaces using a dry cloth,
check attachments of lightning arrester to the pole, tightening torque.
If the enclosure is under pressure, check the tightness of cover seals by ap-
plying a soap solution around the entire periphery of the cover.
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