What is cable gland?
This article will introduce the cable glands from three aspects of function, application and classification.
Function
The main function of waterproof cable gland is to seal the cable.
When the cable leaves the factory, both ends are sealed, but when laying or connecting,
its ends must be cut open, which destroys its tightness.
If the end of the cable is not sealed during laying or the quality of the cable head is unqualified,
the cable head will leak oil, and finally the insulating oil will dry up, and the insulation performance
will be greatly reduced, affecting the safe operation of the cable.
The cable gland is also used to lock and fix the incoming and outgoing lines, which plays
the role of waterproof, dustproof and anti vibration.
Application
Waterproof cable gland is a kind of connecting device often used in power system.
It is mainly used in outdoor products, medium and large-scale remote control machinery,
and the equipment whose body is in the outdoor control system is not on the body.
For example, waterproof cable glands are used in chemical plants,lighting industry, oil industry,wire pole,
base stations of telecommunications networks,solar, wind, tide energy
and factories with a high degree of automation.
Classification
1. According to the installation site, it can be divided into indoor type and outdoor type.
2. According to the production and installation materials,
it can be divided into heat shrinkable type (the most commonly used one),
dry package type, epoxy resin pouring type and cold shrinkable type.
3. According to the core material, it can be divided into copper core power cable gland
and aluminum core power cable gland.
4. According to the cable gland material, it is divided into nylon cable gland and metal cable gland.
