7. Power cables

Power cables, applied for editing, must conform to the requirements GOST 16442-80, GOST 18410-73 and IEC 60227-1:2002. Current the conducting tendons of cables must be isolated a polyvinylchloride plasticate.

Cables must be expected for exploitation at the temperature of environment from minus of 40°С to plus 40 °С

An isolation and shell must be proof to deformation at a temperature 80 °С.

The isolated tendons of multicore cables must have the distinctive colouring.

The isolation of tendons of grounding must have the yellow-green colouring.

Cables must be tested in accordance with the requirements of SOU-N EE 20.302:2009 "Norms of test of cable lines of force tension to 500 kV".

Values of possible currents of short circuit for tendons, temperatures of heating lived, to durability on tension, relative lengthening at a break must be presented Customer on a concordance.

Term of service of cables, no less - 30 years.

8. Control cables

Control cables, laid on territory of substation must be with copper tendons by a section no less than 1,5 mm2, are if necessary screened, not comburent, and also must keep a reserve reserve on exploitation.

Cables control must correspond GOST 1508-78 "Cables control with a rubber and plastic isolation. Technical requirements", and also GOST 26411-85 "Cables control. General Technical requirements" and to the technological document, to ratified in accordance with established procedure.

For verification of conforming to of cables the requirements of standards, Technical requirements on the cables of concrete brands acceptance, periodic and model tests are set.

Packing, marking, portage and storage of cables must correspond GOST 18690-82.

Technical requirements to the construction of control cable:

• copper solid conductor of cables must be one wire and to correspond a class 1 for GOST 22483-77;

• the isolated tendons must be twisted up;

• the colour marking must be continuous or as longitudinal bars breadthways no less than 1 mm;

• marking numbers or bar must be non-erasible and distinct;

• on-the-spot isolation lived and a shell must not be dents, destroying the thickness of isolation or shell for a lower maximum rejection. Repair of isolation and shell is assumed by those materials, what were applied for their making;

• cables must not diffuse burning at the test of one standard of cable;

• cables must be bars to the assembling bends;

• the protective covers of cables must correspond GOST 7006-72.

A manufacturer must guarantee conforming to of cables the requirements of standards at the observance of external, storage and portage environments. Guarantee term of exploitation - three years from the day of putting of cables into an operation.

Term of service of cables on condition of observance of rules of editing, ratified in accordance with established procedure an user, external and storage environments must be no less than 15 years, and at a gasket in apartments, tunnels, ductings - 25 years.