Classification of Wires and Cables for Electrical Equipment

"Wire" and "electrical equipment with wire and cable" in the concept of no strict boundaries. Narrowly divided into "wire" and "cable", in a broad sense, collectively referred to as "cable". Generally speaking, it is considered as follows.

1) One called "wire", and other one called "cable".

2) The small diameter is called "wire", and the large diameter is called "cable".

3) The simple structure is called "wire" and the complex structure is called "cable".

However, with the expansion of the scope of use, many varieties of "cable in the wire", "wire in the cable". So there is no need to strictly distinguish. Everyday habits, the home with the cloth wire called wire, power cable referred to as cable.

Wires and cables mainly include bare wire, winding, power cables, communication cables and fiber optic cables, electrical equipment with.

Naming of Cables:

Because the complete naming of electrical equipment with wire and cable is usually complex, so you can combine a simple name (usually a category name) and model specifications, rather than the full name. For example, "low voltage cable" means all plastic insulated power cables of 0.6/1kV class.

Electrical equipment with wire and cable model spectrum is relatively complete, if you write down the standard format specifications of wire and cable, the specific product can be said to be clear, but what is the complete naming?

Naming Principles:

Electrical equipment with wire and cable products have the following principles of naming.

1 . The content contained in the product name

1) Product application when or size class name

2)The product structure material or style.

3) Important features or additional features of the product

Basically named in the above order, in order to emphasize the important features and additional features, sometimes the features are written in front or before the corresponding structure description.

2 . Order of structure description

The product structure description is based on the principle of inside to outside, conductor - - greater than insulation - - greater than the inner protective layer - - greater than the outer protective layer - - greater than the sheathing type.

3 . Simplification

In the absence of confusion, the code of the car, the code can not use aluminum conductors, so omitted or simplified some structural descriptions, such as not describing the conductor material.

Situation:

Rated voltage 8.7/15kV flame-retardant copper core cross-linked polyethylene insulation steel belt sheath PVC sheathed power cable (too long! )

Use of "rated voltage 8.7/15kv" - when/at voltage level

"Flame retardant" - emphasis on characteristics

"Copper core" - conductor material

"Cross-linked polyethylene insulation" - insulation material

Steel strip sheathing - sheathing material and type (double steel strip gap winding).

Model Number Description:

Model omission principle: electrical equipment with wire and cable products in the copper is the main conductor material used, so the copper core symbol t omitted to write. However, the bare wire and bare conductor products are excluded. Bare wire and bare conductor products, power cables, magnetic cable products are not marked with a large classification number, but also not marked with electrical equipment with wire and cable class and communication cable class, but specify a small classification or series number, etc.. Item 7 is a variety of special use or additional special use requirements of the mark, in order to emphasize this item, sometimes write this item at the beginning. For example, flame retardant, fire resistant, low smoke and halogen free, enterprise standards, TH, hot and humid areas, FY, termite countermeasures, enterprise standards), etc.