Classification of wires and cables for electrical equipment
Wire and cable for electrical equipmentOne of the five main types, how to understand the basics of wire and cable for this type of electrical equipment is also important to our technicians and medium and high voltage cables.
Wires and cables for electrical equipment, electrical appliances, electrical installation lines and control signals that directly transmit electrical energy from the distribution points of the power system to various types of equipment used in industry, agriculture, industry and mining. Wires and cables for electrical equipment in enterprises belong to this category. This type of product has a wide range of uses and many types, most of which must be combined with the characteristics of the equipment used and environmental conditions to determine the structure and performance of the product. Therefore, in addition to a large number of general products, there are many special and special products.
Wire and cable for electrical equipmentProduct classification: usually divided into eight categories according to the use of the product. Each type of product contains a variety of cables, so this kind of electrical equipment wire and cable is relatively complex. It is hoped that through learning, our craftsmen will have a comprehensive understanding and support for it, and pay attention to its structural characteristics, performance indicators, environmental conditions, use requirements, etc. in the work process, formulate reasonable technical specifications, process flow, inspection and testing, and produce high-quality products to serve users. Eight categories of products are as follows:
1 Low-voltage power distribution electrical equipment with wires and cables mainly refers to fixed laying and mobile power wires and cables.
2 Signal and control cables mainly refer to electrical equipment wires and cables used to transmit signals or perform control operations, such as ordinary rubber, plastic insulated wires, rubber, plastic insulated flexible wires, shielded insulated wires, rubber sheathed flexible cables, etc. Between the control center and the system. For example, control cables composed of various insulating materials and sheaths, control cables for intrinsic safety circuits, low-smoke halogen-free electronic computer control cables, etc.
3 The connecting line of the instrument and equipment mainly refers to the internal installation line of the instrument and equipment. and external leads. Such as: nuclear power plant IE grade K3 instrument installation wiring cable, water conservancy project observation signal and power equipment cable, flame retardant instrumentation, fluorine insulation computer cable, etc.
4 Wires and cables mainly used for transportation refer to the supporting wires and cables of automobiles, locomotives, ships and airplanes.
5 geological resources exploration and development of wire and cable mainly refers to the use of coal, ore, and oil field exploration. Such as: oil platform cable, geological exploration cable, coal mine with flame retardant cable, mining wire and cable, etc.
6 DC high voltage cable
Mainly refers to the X-ray machine and electrostatic equipment. Such as: mainly refers to the high temperature, fire, nuclear power plant wire and cable. Such as nuclear power plant photographic light source cable, DC high voltage flexible cable, high voltage electric furnace cable, electron microscope high voltage cable.
7 Special wire and cable
High temperature cables, fluoroplastic or silicone rubber insulated and sheathed cables, mineral insulated cables, thermocouple cables and cables, high temperature sensor control cables, etc.
8 Heating cables mainly refer to wires and cables used for household heating, plant cultivation and pipeline insulation. For example: automatic control heating cable, mineral insulated heating cable, 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.