VRIOGS 010.3 RevA - Public Transport Victoria

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24 VRIOGS 010.3 Revision A8.8 HV AND 1500V DC SWITCHBOARDSGiven below are some general requirement for HV and 1500V DC Switchboards.More detailed requirements are provided in the electrical specifications that are listedin section SECTION 13.0.8.8.1Switchboards shall be of metal-clad construction and designed to comply with AS3000 and AS 3439.8.8.2Switchgear is to be fully operational from ground level, without the need to work offplatforms.8.8.3The switchgear in service status shall be unambiguous and should be possible to bedetermined with ease by an operator.8.8.4Interlocking of the operation of equipment shall be provided for in the design such asto prevent the accidental contact of personnel with live equipment. For example anyequipment that has switchgear on both sides of that equipment shall make provisionfor the interlocking of the operation of the switchgear on both sides to ensureelectrical isolation from both sides.8.8.5Access is required to visually inspect earth and short circuit connections andunambiguously determine the status. Also the connection shall be possible to beviewed in dark conditions using a photo luminescent strip or internal lighting.8.8.6The switchboard and all it components shall be type tested as per AS 2650.8.8.7The switchboard rating will be such as to be able to supply the rated load as well aswell as any future load that may be part of the station strategy as would be specifiedby the Department.8.8.8The switchboard fault rating shall be such as to withstand the maximum prospectivefault level at the switchboard.NOTE:This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.
VRIOGS 010.3 Revision A 258.8.9If required the switchboard shall have a transport split to enable manoeuvring to itsdesignated location.8.8.10Lifting lugs shall be provided to lift the switchboard using a crane if necessary.8.9 SWITCHBOARDS – 415V/240V AND 110V DC8.9.1Switchboards shall be of Form 4 construction as per AS 3439.8.9.2Cubicles shall be vermin and insect proof, and constructed to IP55 as per AS 19398.9.3Switchboards in areas of moisture and dust shall at minimum have an IP65 enclosureas per AS 1939.8.9.4The 415/240V switchboard shall be supplied from the substation auxiliary transformerduring normal operation.8.9.5Each switchboard shall include sufficient space to allow for 30 percent extra capacityfor future additions.8.9.6Protective devices on each switchboard shall be MCCBs.8.9.7Each fuse, link, MCCB, relays, switches, indications etc shall be identified by itscorrect label. The designer shall provide for self adhesive black lettering on whitetraffolyte labels.8.9.8The designer shall provide an Auxiliary Supplies Schematic showing the wiringrequirements for each switchboard.8.9.9A detailed layout or specification drawing shall be made of each switchboard toenable manufacture.NOTE:This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.
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