Cable lines up to 220 kV. Scope, definitions

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Section 2. Sewerage of electricity

Cable lines up to 220 kV. Scope, definitions

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Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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2.3.1. real chapter ¹⁾ The Rules apply to cable power lines up to 220 kV, as well as lines carried out by control cables. Cable lines of higher voltages are made according to special projects. Additional requirements for cable lines are given in Ch. 7.3, 7.4 and 7.7.

1. Agreed with the Gosstroy of the USSR on June 10, 1975; approved by the Main Technical Administration of the USSR Ministry of Energy on August 18, 1975. Amended by the Decisions of the Main Technical Administration of the USSR Ministry of Energy e E-13/77 of December 19, 1977, e E-1/78 of January 11, 1978, eE-2/80 of January 28, 1980 g., e E-6/81 dated May 15, 1981, e E-10/81 dated August 20, 1981 and e E-3/83 dated February 28, 1983

2.3.2. A cable line is a line for the transmission of electricity or its individual impulses, consisting of one or more parallel cables with connecting, locking and end couplings (terminals) and fasteners, and for oil-filled lines, in addition, with floating devices and an oil pressure alarm system.

2.3.3. A cable structure is a structure specially designed to accommodate cables, cable boxes, as well as oil feeders and other equipment designed to ensure the normal operation of oil-filled cable lines. Cable structures include: cable tunnels, channels, boxes, blocks, shafts, floors, double floors, cable racks, galleries, chambers, feeding points.

A cable tunnel is a closed structure (corridor) with supporting structures located in it for placing cables and cable boxes on them, with free passage along the entire length, which allows cable laying, repairs and inspections of cable lines.

A cable channel is a closed and buried (partially or completely) in the ground, floor, ceiling, etc., an impassable structure designed to accommodate cables in it, laying, inspecting and repairing which can only be done with the ceiling removed.

A cable shaft is a vertical cable structure (usually of rectangular section), whose height is several times greater than the side of the section, equipped with brackets or a ladder for people to move along it (walk-through shafts) or a completely or partially removable wall (impassable mines).

A cable floor is a part of a building bounded by a floor and a floor or cover, with a distance between the floor and the protruding parts of the floor or cover of at least 1,8 m.

A double floor is a cavity bounded by the walls of the room, the interfloor overlap and the floor of the room with removable slabs (on the whole or part of the area).

A cable block is a cable structure with pipes (channels) for laying cables in them with wells related to it.

A cable chamber is an underground cable structure, closed with a deaf removable concrete slab, designed for laying cable boxes or for pulling cables into blocks. A chamber that has a hatch to enter it is called a cable well.

A cable overpass is an elevated or ground open horizontal or inclined extended cable structure. Cable overpass can be passable or non-passage.

A cable gallery is an overground or ground closed completely or partially (for example, without side walls) horizontal or inclined extended cable structure.

2.3.4. It is called a box - see 2.1.10.

2.3.5. It is called a tray - see 2.1.11.

2.3.6. A cable oil-filled line of low or high pressure is a line in which the long-term allowable overpressure is:

0,0245-0,294 MPa (0,25-3,0 kgf/cm2) for low-pressure lead-sheathed cables;
0,0245-0,49 MPa (0,25-5,0 kgf/cm2) for low pressure cables in aluminum sheath;
1,08-1,57 MPa (11-16 kgf/cm2) for high pressure cables.

2.3.7. A section of a low-pressure oil-filled cable line is the section of the line between the stop sleeves or the stop and end sleeves.

2.3.8. A feeding point is an above-ground, ground or underground structure with feeding devices and equipment (feed tanks, pressure tanks, feeding units, etc.).

2.3.9. A branching device is a part of a high-pressure cable line between the end of a steel pipeline and end single-phase couplings.

2.3.10. A feeding unit is an automatically operating device consisting of tanks, pumps, pipes, bypass valves, valves, an automation panel and other equipment designed to provide high-pressure cable line oil feeding.

See other articles Section Rules for the installation of electrical installations (PUE).

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