There are no strict boundaries between "wires" and "cables". In the narrow sense, it is divided into "wires" and "cables", which are collectively referred to as "cables" in a broad sense. usually think:
(1) The single root is called "line"; the multiple root is called "cable".
(2) The small diameter is called "line"; the large diameter is called "cable".
(3) The structure is simple called "line"; the structure is complicated by "cable".
However, with the expansion of the scope of use, many varieties "have cables in the line" and "cable in the cable". So there is no need to make a strict distinction. In daily habits, people call household wire as a wire and power cable as a cable.
Wire and cable mainly includes bare wires, winding wires, power cables, communication cables and optical cables, and electrical equipment.
Wire and cable naming
The complete naming of wires and cables is often complicated, so people sometimes use a simple name (usually the name of a category) in combination with the model specification instead of the full name. For example, "low-voltage cable" represents all plastic insulated power of 0.6/1kV class. cable.
The wire and cable type spectrum is relatively perfect. It can be said that as long as the standard model specifications of the wire and cable are written, the specific product can be specified, but what is its complete name?
The naming of wire and cable products has the following principles:
1. What is included in the product name
(1) Product application or size class name
(2) product structure materials or types;
(3) Important or additional features of the product
Basically named in the above order, sometimes in order to emphasize important or additional features, the features are written before or before the corresponding structure description.
2. The order of structure description
The product structure is described from the inside to the outside: conductor -> insulation -> inner sheath -> outer sheath -> armored type.
In the case of no confusion, some structural descriptions are written or abbreviated. For example, aluminum conductors are not allowed in automobile wires and cords, so conductor materials are not described.
Flame-retardant copper core XLPE insulated steel tape armored PVC sheathed power cable with rated voltage of 8.7/15kV (too long!)
"Rated voltage 8.7/15kV" - use occasion / voltage level
"Flame retardant"--emphasized features
"Copper core"--conductor material
"Crosslinked Polyethylene Insulation"--Insulation Material
"Steel belt armor"--armoring layer material and type (double steel belt gap wrapping)
"PVC sheath"--inside and outer sheath material (the inner and outer sheath materials are the same, save the inner sheath material) "Power cable"--the product category name
The corresponding model is written as Zr-YJV22-8.7/15. The model is written as described below.
The model and sequence of wire and cable are as follows:
[1: Category, use] [2: Conductor] [3: Insulation] [4: Inner sheath] [5: Structural features] [6: Outer sheath or derivative]-[7: Use characteristics]
Items 1-5 and 7 are indicated by pinyin letters, and polymer materials are indicated by the first letter of the English name, each item can be 1-2 letters; the sixth item is 1-3 numbers.
Omitted principle in the model: Copper is the main conductor material used in wire and cable products, so the copper core code is written in T province, except for bare wires and bare conductor products.
In short, the cable specification model fate is named according to product characteristics and related standards, of course, some are named by the cable factory according to their own standards, such as pre-branch cable: YFD-ZR-YJY-1x10 at the beginning of the YFD is the name of the self-named product.