All these designations come from the DIN VDE 0888 standard, which has German roots (DIN and VDE - Deutsches Institut für Normung, Verband der Elektrotechnik). Therefore, do not be surprised that most of the notation is not taken by ordinary logic brought up in English abbreviations. First, we list a number of the most common alphabetic and alphanumeric designations, and then give a general template for constructing the coding applied to cables in accordance with the requirements of DIN VDE 0888.
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Common alphabetic and alphanumeric designations
LLK is a generally accepted German designation, stands for "inside the shell - fiber optics."
| Sequence number of the category | Designation | Decoding |
|---|---|---|
| First rank | BUT | The cable is designed for external use |
| I, J | The cable is intended for indoor use. Some manufacturers prefer the J, others prefer the I | |
| Second rank | V | Tight Buffered Fiber |
| IN | Single fiber in free buffer filled with gel | |
| D | Several fibers in a loose buffer filled with gel | |
| K | Fiber in a semi-dense buffer | |
| Third rank | S | Used when there are metal structural elements in the central part of the cable |
| Fourth grade | F | Used when filling the central part of the cable with a special gel |
| Fifth rank | (L) | One of the cable subshells is made of aluminum tape |
| (ZN) | As part of the cable, elements are used that take on tensile loads and are made of non-conductive materials | |
| B | The cable has armor | |
| AND | The cable sheath is made of polyvinyl chloride (PVC) | |
| 2Y | Sheath is made of polyethylene PE (usually high density polyethylene) | |
| 4Y | The casing is made of PA polyamide (one of the main methods of protection against rodents) | |
| 11Y | Sheath is made of polyurethane PUR (one of the outdoor cable sheath options) | |
| H | Low smoke and zero halogen LSZH casing | |
| Q | The cable includes a special tape that prevents water from entering under the sheath due to swelling | |
| Sixth rank | n | The number of fibers in the cable if there are only single fibers in each buffer |
| n x m | The number of elements n (common buffers), each of which contains m fibers |
Cable sheath:
Y - sheath made of polyvinyl chloride (PVC, PVC)
H - halogen free, flame retardant polymer jacket
2Y - polyethylene (PE) sheath
4Y - polyamide (PA) sheath
11Y - polyurethane sheath (PUR)
(L) 2Y - under the polyethylene sheath there is a layer (s) made of aluminum
(SR) 2Y - under the polyethylene sheath there is a corrugated steel tape winding
(ZN) 2Y - a non-metallic reinforcing element is used under the polyethylene sheath inside the cable
(ZN) B2Y - a non-metallic reinforcing element is used under the polyethylene sheath inside the cable, the cable is protected from rodents
(ZN) BH - a non-metallic reinforcing element is used under a halogen-free and flame-retardant sheath, cable is protected from rodents
(ZN) (L) 2Y - under the polyethylene sheath, under the layer made of aluminum, a non-metallic reinforcing element is used
(ZN) (SR) 2Y - under a polyethylene sheath, under a layer made of corrugated steel tape, a non-metallic reinforcing element is used
Many manufacturers (again, with German roots) use color-coded cable jackets:
- Orange Jacket Indoor Cable
- Green sheath - cable for universal use, outside and inside buildings
- Black jacket with orange stripes - external cable