Classification of wires and cables for electrical equipment
Commonly usedWire and cable for electrical equipmentClassification description of specifications and models.
Wire and cable for electrical equipment: wire products used to realize the conversion of power transmission (magnetic) energy, information and electromagnetic energy.
The difference between wires and cables for electrical equipment,Yanggu cable factory, cable factoryAnswer for you.
There is no strict conceptual boundary between "wire" and "wire and cable for electrical equipment. Narrowly divided into "wire" and "cable", broadly referred to as "cable". It is generally considered as follows.
1) A multi-book called "Line" is called "Cable".
2) The small diameter is called "wire", and the large diameter is called "cable".
3) The simple structure is called "line", and the complex structure is called "cable".
However, with the expansion of the scope of use, many varieties of "line in the line", "line in the line". There is no need for a strict distinction. In daily habits, household cloth wires are called wires, and power cables are referred to as cables.
Wire and cable mainly includes bare wire, winding, power cable, communication cable and optical cable, electrical equipment.
Because the full naming of wires and cables for electrical equipment is often complex, you can combine simple names (usually category names) with model specifications instead of full names. For example, "low voltage cable" means all plastic insulated power cables of class 0.6/1kV.
The type spectrum of wires and cables for electrical equipment is relatively complete. If you write down the standard format specifications of wires and cables, the specific products can be said to be clear, but what is the complete name?
The naming of wire and cable products for electrical equipment has the following principles.
1. Content contained in the product name
1) Product application or size class name
2) Product structure material or style;
3) Important features or additional features of the product
Nomenclature is basically in the above order. In order to emphasize important features and additional features, features are sometimes written before the front or corresponding structural description.
2. order of structure description
Product structure description According to the principle from the inside to the outside, the conductor --- is greater than the insulation --- is greater than the inner protective layer --- is greater than the outer protective layer --- is greater than the sheath type.
In the absence of confusion, the code and code of the car cannot use aluminum conductors, so some structural descriptions are omitted or simplified, such as not describing the conductor material.
Rated voltage 8.7/15kV flame retardant copper core XLPE insulated steel sheathed PVC sheathed power cable (too long!)
Use "Rated voltage 8.7/15kv"-Hour/voltage level
"Flame Retardant"-Characteristics of Emphasis
"Copper core"-conductor material
"Cross-linked polyethylene insulation"-insulation materials
Steel belt sheath-sheath material and type (double steel belt gap winding).
The principle of omission in the model: copper in wire and cable products for electrical equipment is the main conductor material used, so the copper core symbol t is omitted. However, bare wire and bare conductor products are excluded. Bare wire and bare conductor products, power cables and magnetic cables are not marked with large classification numbers, wires and cables for electrical equipment and communication cables, but with small classification or series numbers. Item 7 is a mark for various special uses or additional special use requirements. In order to emphasize this item, this item is sometimes written at the beginning. For example, flame retardant, fire resistant, low smoke and halogen free, enterprise benchmark, TH, hot and humid areas, FY, termite countermeasures, enterprise benchmark), etc.
What are the main points of purchasing wires and cables? Let's take a look. As the main carrier of power transmission, wire and cable are widely used in electrical equipment, lighting circuits, household appliances, etc. Its quality directly affects the quality of the project and the safety of consumers' lives and property. There are many wire varieties on the market, and appropriate wires should be used according to their own power load.
What are the precautions for wires and cables? Let's take a look. Common cable faults: wire surface markings-according to national standards, the wire surface should have continuous markings of the manufacturer's name, product model and rated voltage. This helps to find the manufacturing plant in time when there is a problem during the use of the wire, and consumers should pay attention to this when buying the wire.
There are many kinds of wire and cable products for electrical equipment on the market, which are difficult for ordinary consumers to distinguish. So what are the main categories of wire and cable products? What are the product naming principles of wire and cable? The editor brings you a brief understanding of relevant content knowledge.
The wires and cables for electrical equipment are mainly used for internal or external connection of electrical equipment, low-voltage transmission lines and various electrical signal transmission lines. Generally speaking, except for power cables, communication cables and magnet wires, most insulated wires and cables are classified as wires and cables for electrical equipment.
Electrical equipment with wire and cable is a large class of wire and cable products, a wide range of applications, many varieties, many series, large output, process type complex. The rated voltage of wires and cables for electrical equipment is low, and the working voltage is 450/750v and below, which is not more than 0.6/1kv. The working voltage of signal and instrument cables is usually 300/500v and below. The ampacity of the cable is determined according to the requirements of the cable.
Low voltage power cable winter pay attention to matters? As the weather gets colder and colder, manufacturers of low-voltage power cables usually become more difficult, which brings inconvenience to construction. Here are some precautions for winter construction. Let us take a brief look.