Labelling of Power Cable Cores acc. to VDE 0293-308
Essential points of the norm
- introduction of the core colour “grey” for an outer conductor
- maintenance of the core colour “green-yellow” for the protective conductor and “blue” for the neutral conductor
- no other colour than “blue” is allowed to be used for the neutral conductor
Suspension information
Each builder of a plant has to determine already existing cables and wires and their function as well as their core colour (outer conductor, neutral etc.) during an initial examination. With the aid of these gained information further connections have to be made.
During the initial examination it has to be found out if the motors have the right rotating field and if there is a clockwise rotating field at the three-phase AC current socket.
- Recommendations / requirements regarding the determination of colours – as far as specifications are existing, contained in DIN VDE 0100-510.
Up to now there is no determination or recommendation of this norm regarding the correlation of colour and conductor marking (L1, L2, L3).
One recommendation may be the orientation to the frequently applied assignment: L1 = black / L2 = brown / L3 = grey. - Regardless of missing assignment, it is recommended to use a consistent assignment for the same object.
- When extending an already existing plant, the new norm has to be deployed from the point of extension.
This applies universally and not only for the colours of the cores. From the point of extension on, colours have to be combined if they are varying.
There is no demand which colour has to go with which other colour. - Problems can only occur if existing electrical plants with “mechanical readjustment/ electrocode zeroing” (PEN conductor < 10mm²) were put up and for the old plants two-core cables with grey PEN conductor were used as the “standard”.
Here it is allowed to combine the grey core of the new cable with the grey core (PEN conductor) of the existing old cable ! At such an extenstion point, depending on the connecting condition, the green-yellow core or the blue core of the new cable has to be connected with the grey PEN conductor.
Typical applications for three-core conductors with the colour code brown / black / grey
- connection toggle switch
- series switch
- SELV power circuits
- control circuits, with some reservations
Typical applications for four-core conductors with the colour code green-yellow / brown / black / grey
- connection three-phase motor
- circuits
- control circuits
Labelling of Power Cables acc. to VDE 0293-308
Only admissible in specific applications !!
See DIN VDE 0198:1999-10:
There it is determined that the blue core is allowed to be used as the outer conductor if no neutral conductor is needed in this circuit and if there is no danger of confusion.
Does not apply in Austria !!
Labelling of armoured power cables acc. HD 603 S1 part 8B
Further Technical Information, Tables and Data
Here you will find general information, technical tables for electrical and mechanical characteristics, material tables, cable designation codes and further details about cables and wires.
Drum Overview
Here you will find an overview of the rental cable drums …
Pictograms
Explanation of the pictograms used on Bayka products …
Type designation codes
Explanation of the type designation codes of cables and lines …
Identification of the fibers – FO cables
acc. to VDE 0888-3 table. 1 with the colors acc. to IEC 60304
Conductor Resistance
Classified acc. to IEC 60228 (DIN VDE 0295)
Current carrying capacity of cables and lines
Current carrying capacity
Flexible lines in general and cables / lines for fixed installation in/on buildings
acc. to VDE 0298-4
And in the case of these applications:
- Power cables fire class Fca to B2ca
- Use as a motor connection cable
- Use in high voltage systems
- Flexible lines general
- Cable with conductor temperature up to 90°C
Current carrying capacity
Cables with improved characteristics in case of fire
acc. to HD 604 S1 and HD 627, part 7H
(identical with DIN VDE 0276-604, or rather DIN VDE 0276-627)
- Power cables fire class Cca to B2ca
- Use as a classic power cable or feed in cable
- In air, cable support systems and earth
- Cable with conductor temperature 90°C
Current carrying capacity
XLPE-Insulated LV Cables
acc. to HD 603 S1, part 5G and HD 627 S1, part 4H
And in the case of these applications:
- Power cables fire classe Fca to Eca
- Use as a classic power cable or feed in cable
- In air, cable support systems and earth
- Cable with conductor temperature up to 90°C
Current carrying capacity
Rated current PVC-insulated low voltage cables
acc. to HD 603 S1, part 3G and HD 627 S1, part 4H
And in the case of these applications:
- Power cables fire classe Fca to Eca
- Use as a classic power cable or feed in cable
- In air, cable support systems and earth
- Cable with conductor temperature up to 70°C
Basic Conditions for the Determining
Current carrying capacity GKN-cables
Especially for these cable types:
- GKN 1-5-cores
- GKN Flex 1-5-cores
- GKN ALSM
- GKN ALSE
- GKN ALRM
Current carrying capacity
Medium voltage cables plastic-insulated
In the case of these applications:
- Cable with extruded insulation for nominal voltage from 3,6/6 to 20,8/36 kV
Current carrying capacity
Medium voltage cable with impregnated paper insulation – single core
acc. to HD 621 S1, part 3C
In the case of these applications:
- impregnated paper insulated
- 1-core
Current carrying capacity
Medium voltage cable with impregnated paper insulation – triple core
acc. to HD 621 S1, part 4C
In the case of these applications:
- impregnated paper insulated
- 3-cores
Technical properties of optical fibers
Technical data MM-fibres
Graded index fibre G50/125
Technical data SM-fibres