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IEEE 1628-2009 pdf free

IEEE 1628-2009 pdf free.IEEE Recommended Practice for Maintenance of DC Overhead Contact Systems for Transit Systems.
Requirements of federal, state, provincial, or local regulations should be observed. If any conflict exists between this recommended practice and the rules established by the owner of the transit systeni. the owner should determine and confirm which rules should take precedence.
2. Normative references
The following referenced documents are indispensable for the application of this document (i.e.. they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
Accredited Standards Committee C2-2007. National Electrical Safety Code’ (NESC”)i2 ASTM Dl20-09, Standard Specification for Rubber Insulating Gloves’
3. Definitions
For the purposes of this document, the following terms and definitions apply. The IEEE Siandards
Dictiouw: Glossart of T’rntc & Dflniiion.c should be referenced for terms not defined in this clause.4
contact wire: The conductor that is in “cornact” with the pantograph collector head or trolley pole collector shoe through which the vehicle draws current. Trolley wire is synonymous with contact wire, but is the term used mainly by streetcar systems and rubber-tired ETH systems using trolley poles.
niessenger wire: Used in many applications as a supporting wire, e.g., utility insulated cable distribution systems frequently usc an uninsulated, galvanized, stranded steel wire to support the cable. The messenger wire in catenary styles supports the contact wire both mechanically and electrically, since it is part of the current-carrying conductor system.
pantograph: A spring-loaded, linked framework mounted on top of the rail vehicle or streetcar, which moves in a vertical plane to accommodate changes in the height of the contact wire and is the mechanism through which power for the vehicle is collected from the contact wire distribution system.
trolle pole: A hinged, spring-loaded pole, mounted on top of ETB cars and streetcars, with either a collector shoe or wheel collector at the upper. outer end, through which power for the vehicle is collected from the contact wire distribution system.
3.1 Qualified person
A person who, by reason of instruction, training, and experience, is familiar with high voltage circuits and OCS equipment and has demonstrated familiarity with the work to be performed and the hazards involved.IEEE 1628 pdf download.

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