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CEI UNEL 35011
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Symbols on the nature and degree of flexibility of the conductors
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- |
no symbol: copper conductor
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A |
aluminum conductor
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EF |
extra flexible wire, stranded or special construction
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F |
stranded round conductor
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FF |
highly flexible wire round rope
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R |
stranded round conductor normal or compact
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S |
sector-stranded
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SU |
sector-single conductor wire
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U |
single conductor wire round
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Symbols for insulation
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C |
paper impregnated with a mixture of normal
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C1 |
paper impregnated with a mixture of non-migrant
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C2 |
paper impregnated with a special blend of gas and
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C3 |
paper impregnated with oil-filled
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C4 |
paper impregnated with a mixture stabilized
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E |
blends based on polyethylene thermoplastic
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E4 |
compound based on cross-linked polyethylene having a characteristic temperature of 85 °C suitable for protective coatings
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G |
mixture based on natural rubber and / or synthetic with characteristic temperature of 60 ° C, quality EI1 |
G4 |
silicone rubber compound with characteristic temperature of 180 °C, quality EI2 |
G7 |
mixture based on ethylene-propylene rubber having a high modulus characteristic temperature of 90 °C |
G8 |
mixture based on ethylene-propylene rubber is also suitable for cables without having rivestimentoprotettivo characteristic temperature of 85 °C |
G9 |
elastomeric reticulated low smoke and toxic and corrosive gases suitable for cables without protective coating having the characteristic temperature of 90 °C |
G10 |
crosslinked rubber compound with low smoke and toxic and corrosive gases with ambient temperatures of 90 °C |
G19 |
crosslinked rubber compound with low smoke and toxic and corrosive gases with ambient temperatures of 90 °C |
G20 |
crosslinked insulating compound for low smoke and toxic and corrosive gases with ambient temperatures of 90 °C |
M |
mineral insulation |
M9 |
thermoplastic compound with low emission of smoke and corrosive gastossici and with characteristic temperature of 70 °C |
R |
polyvinyl chloride compound with characteristic temperature of 70 °C, quality TI1 and TI2 |
R2 |
polyvinyl chloride compound with characteristic temperature of 70 °C, as R2 |
R4 |
compound based on polyamide resin
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R5 |
mixture based on fluorocarbon resins
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R5F |
mixture based on fluorocarbon copolymer resins - tetrafluoroethylene - hexafluoropropylene (FEP)
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R5M |
mixture based on fluorocarbon resins - perfluorometilviniletere-tetrafluoroethylene copolymer (MFA)
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R5P |
mixture based on fluorocarbon resins - perfluorpropilviniletere-tetrafluoroethylene copolymer (PFA) |
R7 |
polyvinyl chloride compound with characteristic temperature of 90 ° C as TI3 |
T4 |
Sterling canvas (oil-based paints and resins)
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V |
glass cloth may be impregnated
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T |
one or more strips of glass or mica glass braid closed
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Markings indicating the concentric conductors and screens on single core cables or the individual core of multicore cables
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AC |
concentric aluminum conductor, if is not a metal sheath
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C |
concentric copper conductor, if is not a metal sheath
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H |
screen metallic paper or paper-carbon or aluminum strip
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H1 |
screen or flat ribbons or wires of copper
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H2 |
braid or braided copper screen
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H3 |
screen double braid or double braid copper
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H4 |
screen of corrugated steel tape longitudinal
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H5 |
screen coated aluminum tape longitudinally
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Q |
copper sheath
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Symbols related to protective coatings on single core cables or the individual core of multicore cables
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Non-metallic coatings:
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E |
EZ-quality plastic sheath
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E4 |
sheath of polyethylene quality E4M
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G |
sheath of natural rubber and / or synthetic quality Gy
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G6 |
sheath made of polyethylene or chlorinated clorusulforato, quality G6M
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K |
sheath-based polychloroprene or equivalent products, quality Ky, Kn, Kz
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R |
sheathed in polyvinyl chloride, as TM1, TM2, RZ
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R4 |
sheath made of polyamide resin
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M1 |
plastic sheath with low smoke and toxic gases and corrosive
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M2 |
elastomeric sheath low smoke and toxic gases and corrosive quality M2
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M3 |
elastomeric sheath, with low toxic and corrosive gases, quality M3
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M4 |
elastomeric sheath, with low toxic and corrosive gases, quality M4
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T |
textile braid (possibly saturated) normal type
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T1 |
bandage tape glass
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T2 |
textile braid of special type (eg glass braid) may be impregnated
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Metallic coatings:
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A |
smooth aluminum sheath, or armor braid (shield) wire
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A1 |
corrugated aluminum sheath
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EL |
sheath of lead alloy, with an underlying continuity conductor
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EP |
sheath of lead alloy with no underlying continuity conductor
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F |
cylindrical wire armouring, usually steel
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FJ |
wire armouring as above, with outer jute impregnated, or equivalent
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H4 |
screen of corrugated steel tape longitudinal
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H5 |
screen coated aluminum tape longitudinally
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L |
lead alloy sheath
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N |
normally steel tape armouring
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NJ |
weave strips as above, with outer jute impregnated or equivalent
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P |
not lead alloy sheath
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Q |
copper sheath
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Z |
weave strips of steel normally
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ZJ |
weave strips as above, with outer jute impregnated or equivalent
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Symbols on the composition and shape of the cables: |
- |
no symbol: single core cables
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O |
cores, possibly with its own cover, together with or without fillers to form a virtually round cable
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D |
cores as above, side by side parallel cable (external form flattened)
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X |
cores as above, combined with propeller visible (eg cable precordium)
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W |
cores united parallel with a groove intermediate (divisible flat cable, sharp-edged or rounded)
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W1 |
parallel souls united with intermediate insulating bars |
Any particular organs:
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S |
bearing organ, usually metal, built-in non-metallic sheath
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Y |
bearing organ, textile or metal, including between cores or externally attached a wire embedded in the non-metallic sheath. |