What is the difference between cable core and quality?

A cable with multiple cores is called a multi-core cable. Common multi-core wires include: 10 core, 12 core, 16 core, 24 core, 32 core, etc. Multi core cable is an upgraded version of single core cable. Due to the increasing use of three-phase four wire power supply, three-phase five wire power supply, and multi circuit power supply in practical applications, the requirements for space occupation and installation are also becoming higher and higher. When multiple or multi-layer installations are required and space occupation and installation conditions are limited, single core cables cannot be easily used. Therefore, multi-core cables have been developed and quickly entered the field of power applications, and have been widely accepted and used by users. Due to the increasing use of three-phase four wire power supply, three-phase five wire power supply, and multi circuit power supply in practical applications, the requirements for space occupation and installation are also becoming higher and higher. When multiple or multi-layer installations are required and space occupation and installation conditions are limited, single core cables cannot be easily used.

Armored cable: A layer of metal or other material (depending on the environment in which the cable is laid) is added to the outer insulation layer of the cable to protect it from mechanical damage, chemical gas corrosion, and other external factors. This layer is called the armor layer, and such cables are called armored cables. The mechanical protective layer of armored cable can be added to any structure of cable to increase the mechanical strength of the cable and improve its corrosion resistance. It is designed for telephone cables in areas prone to mechanical damage and erosion. It can be laid in any way, which is more suitable for direct burial in rocky areas.

The definition of armored cable is to add a layer of metal protection on the outermost surface of the product to prevent damage to the internal utility layer during transportation and installation. In cable armor, a layer of insulation sheath is usually added on the outside. The materials for armored cables include steel strips, steel wires, copper strips, tinned steel wires, etc. Their selection is mainly based on the customer's usage environment and requirements.

The function of armored cables: electrical wire products used for transmitting electrical energy, information, and electromagnetic energy conversion.

How to distinguish the quality of cable wires

1. Look at the appearance and certificate: We look at the certification certificate of the quality system requested by the manufacturer to see if the certificate of conformity is standardized; Is there a factory name, address, inspection stamp, production date, etc. And it also depends on whether the cable itself has a trademark, specifications, voltage, etc. It also depends on the cross-section of the copper core of the wire. High quality purple copper has a bright and soft color.

2. Weighing: High quality wires are generally within the specified weight range. For example, the commonly used cross-sectional area is 1. 5 square meters of plastic insulated single stranded copper core wire, with a weight of 1 per 100 meters. 8~1. 9KG, 2. 5 square meters of plastic insulated single stranded copper core wire, with a weight of 3~3 per 100 meters. 1kg. Poor quality cables have insufficient weight, either insufficient length, or too many impurities in the copper core of the wire.

3. To try: Take a section of wire and bend it repeatedly. The wire that feels soft, has good strength, has a strong plastic or rubber feel, and has no cracks in the insulation is generally a national standard wire.

4. Judging by price: Because poor quality wires are usually produced using inferior materials to reduce costs, price is generally one of the important means of differentiation.

5. Check the copper quality: The qualified copper core wire has a purple red color, luster, and good hand feel. Poor quality copper cores are purple black or yellowish white, with many impurities, poor mechanical strength, insufficient flexibility, and can break with a little force. And there are often short wires inside the wires. We usually peel off the wire head and draw a copper core on a white paper. If there are black residues on the white paper, it means that there are more impurities in the copper core, which is a non-standard line.