1kV low voltage power heat shrinkable cable terminal head heat shrinkable branch 23 45 finger gloves

  Cable accessories - concept of cable accessories power cable accessories refer to the intermediate connection and terminal connection of various cables in the cable line, which together with cables constitute power transmission Network; Cable accessories are mainly based on the characteristics of cable structure, which can not only restore the performance of cable, but also ensure the extension and termination of cable length End connection
According to its purpose, it is generally divided into terminal connection and intermediate connection
Terminal connection is divided into indoor terminal and outdoor terminal
Generally, outdoor terminal It refers to the open-air cable joint, and indoor terminal refers to the connection between cable and electrical equipment; The intermediate connection is divided into straight through type and transition type
The mutual connection of two cables with the same insulation structure type is straight through type, and the mutual connection of two cables with different insulation structure types is transition Style Cable accessories - types of cable accessories there are many kinds of cable accessories, which have different types of characteristics and limitations, and generally can not replace each other
Common are as follows Types: (1) wrapped type: the cable accessories made by on-site wrapping with rubber strip (self-adhesive) are called wrapped cable accessories, which are easy to loose, poor weather resistance and short service life; (2) Pouring type: it is poured on site with thermosetting resin as the main material
The selected materials include epoxy resin, polyurethane and propylene The fatal disadvantage of these accessories is that they are easy to produce bubbles during curing; (3) Molded type: it is mainly used for the intermediate connection of cables
It is molded and heated on site and integrated with the cable
The manufacturing process of this accessory Complex and long time, and it is not suitable for terminal connector; (4) Cold shrinkage type: it is formed by pre expansion of elastomers such as silicone rubber and EPDM in the factory and adding plastic support strips
During on-site construction, draw out the support strip to make the pipe shrink on the cable under the inherent elastic effect of rubber and make the cable accessory; Accessories are suitable for construction sites that cannot be heated by open fire, such as mines, petrochemical industry, etc; (5) Heat shrinkable: made of rubber and plastic alloy with & ldquo; Accessories made of different component products with shape memory effect by heating and shrinking on the cable in the field
The accessory has the advantages of light weight, simple and convenient construction, reliable operation and low price Low cost and other characteristics; (6) : it is made by injecting silicone rubber into different components, vulcanizing and molding at one time, only retaining the contact interface, and inserting cables during on-site construction Become a new accessory
The construction process reduces the degree of unfavourable adverse factors in the environment, so the accessory has great potential use value and is crosslinked The development direction of cable accessories, but the manufacturing technology is difficult, involving a variety of disciplines and industries
The installation materials of accessories below the Trident and * ports of the cable still use heat shrinkable materials, so they are actually a combination of heat shrinkable materials