In this article to review the standard Power cables we will pay. Abbreviations in English letters are defined according to the global standard 0276/0271 DIN VDE in power cables.. Standard power cables
What do each of the abbreviations in the cables mean?
Now let's define each of the abbreviation codes in the DIN VDE 0271/0276 standard.:
First, we assume that power cables are defined in the following several parts, which can be generally categorized into the following 4 general parts.:
one thousand) The first part: Characteristics of the main layers of the power cable - (۱، ۲، ۳، ۴، ۵، ۶)
B) Part II: protective conductor (If you have) – (۷) - Number of fields - (۸)
C) third part: Cross section of each string (in square millimeters) – (۹) - Conductor type (in terms of shape) – (۱۰)
of the) The fourth section: Nominal cable voltage - (۱۱)
In the following, we will define each of the sections and their corresponding short codes:
۱- Identifications of designation (Design identity or standard)
N DIN VDE standard according to the standard (DIN VDE)
(N) Similar to DIN VDE standard (DIN VDE (Same as standard
۲- Conductor material (Conductor material)
A Aluminium conductor (Aluminum conductor)
– Copper conductor (copper conductor)
۳- Insulating material (insulating material)
The PVC (PVC)
۲Y Polyethylene (PE) (PE)
۲X Cross-linked polyethylene (XLPE) (Strong polyethylene or crosslink)
– Impregnated paper (without designation) (Saturated paper)
۴- (Concentric conductor (screen (Concentrated conductor or screen)
C Concentric conductor of copper (Hadi is the center of copper)
CW Concentric conductor of copper in waveconal formation (Corrugated copper center conductor)
CE Concentric conductor of copper over each individual core (Copper core conductor on each core)
S Screen of copper wires (Shielding includes copper wires)
SE Screen of copper wires over each individual core (Shielding includes copper wires on each core)
H Conductive layers (Conductive layers)
(F) Longitudinally water-proof screen (Longitudinal protection against water)
۵- Armouring ( armor)
B Steel tape armouring (Steel strip armor)
F Armour of galvanized flat steel wires (Armor of flat galvanized steel wires)
G Counter helix of galvanized steel tape (Spiral galvanized steel strips)
R Armour of galvanized round steel wires (Armor of galvanized steel wires with round cross-section)
۶- Sheath material ( The type of sheath or sheet)
A Oversheath made of fibrous material (Hemp yarn cover)
K Lead sheath (lead sheath)
KL Aluminium sheath (Thin aluminum sheath)
The PVC (PVC sheet)
۲Y Polyethylene (PE) (Polyethylene sheet)
A cable can have an inner sheath (inner sheath) و outer sheath (outer sheath) be at the same time. Outer sheath or cable jacket (jacket)In fact, it is the final layer of the cable (For example, the last Y in the letters NYY indicates the sheet or jacket of PVC type in the final layer of the cable). The inner sheath can also be added to the cable for different applications (Lead sheath, aluminum sheath and... ).
If a cable has any of the mentioned two layers, both codes will be used to show the two layers of the sheet in the coding of the cable.. (For example, NYKY-O is a copper wire cable (Nothing is written next to the N, which indicates the DIN standard; Therefore, the cable is copper. Also, the cable is not shown in the letters, so it is a wire cable.) With PVC insulation (Y) is. Internal sheet (casing) that lead (K) and foreign sheet (Outer sheath or jacket ) It is PVC (Y). In addition, the mentioned cable has a separate thread for earth (yellow/green) Is not (O).)
۷- Protective conductor ( protective conductor)
J With protective conductor (with green/yellow conductor) (Includes protective conductor - copper yellow/green conductor)
O Without protective conductor (without yellow/green conductor) (No shielding conductor – No copper yellow/green conductor)
These short codes are usually seen in multi-core or multi-core cables and it means that one of the desired cables is green/yellow. (Art) is. For example, the 2.5x4 NYY-J cable is a 4-core cable, one of which is earth. (green/yellow) is. The code O in the cable is usually given to emphasize that none of the strings are green/yellow, and it is seen most of the time, a cable with specifications like NYY-O is also sold with the name NYY.. Standard power cables
۸- Number of cores (The number of strings)
۹- Conductor cross-section in mm2 (Conductor cross section in square millimeters)
۱۰- Conductor type (Conductor type)
Circular conductor (r (Conductor with round cross-section)
Sector conductor (s (Conductor with a cross section)
Oval conductor (o (A conductor with an oval cross-section)
Circular, solid conductor (e (Wire conductor with round section)
Stranded conductor (m (Discharged filament conductor)
Hallow circular conductor (h (A conductor with a hollow round section)
Compact conductor (v (compact conductor)
For example, cable se is a sector that every sector (Sector) It is wired, in the same way, re cable is a wired and round cable, sm cable is a stranded and segmented cable, and rm is a stranded and round cable..
۱۱- Rating Voltage (Rated voltage range)
۱/۰ , ۶kV
۶/۳ , ۶kV
۱۰/۶ kV
۲۰/۱۲ kV
۳۰/۱۸ kV
۳۵/۲۰ kV
۶۹/۴۰ kV
۱۱۰/۶۴ kV
۱۳۲/۷۶ kV
Of course, some cables are also introduced with other special abbreviations:
۱۲- Specials (special letters)
Z- Numbered control cable (Numbered control cable)
A- Single core (single string)
F- Flexible (flexible)
(E) – Intrinsically safe (blue) (Of the type of innate immunity, which are usually blue in color)
TR) – Transparent outer sheath) (The transparent outer shell that is usually used in control cables)
B) – Drain wire) (With discharge wire)
