Installation of power cable connector precautions?What are the precautions for installing power cable glands?First of all, let's talk about what is a cable joint, cable joints, also known as cable head.After the cable is laid, in order to make it a continuous line, each section of the line must be connected as a whole, these connections are called cable joints.The cable joints in the middle part of the cable line are called intermediate joints, while the cable joints at the two ends of the line are called terminal heads.Cable glands are used to lock and fix the incoming and outgoing wires and play the role of waterproof, dustproof and vibration-proof.Well, next we continue to talk about the "device power cable connector precautions" it.

Installation of power cable connector method:

1.Intermediate joints for power cables

Due to the limited length of power cable manufacturing, there are always a number of joints in the middle of a power cable line, only to connect the power cables to work properly, this accessory used to connect the power cable is called the power cable intermediate joints, commonly known as the power cable intermediate joints or referred to as joints.Power cable intermediate connector shell called power cable intermediate connector box.

2.Power cable terminals

In the electric power cable line to connect other electrical equipment, and is located in a section of power cable at the end of the terminal head, known as the power cable terminal connector box, commonly known as the power cable end or referred to as the terminal.Power cable lines in the power cable, only the configuration of the power cable terminal to connect with other power transmission and transformation equipment (such as overhead lines, transformers, etc.).

Oil-filled power cable lines, in addition to intermediate joints and power cable terminals, usually have to install plug-stop connection boxes and pressure tanks.

Installation of power cable connector considerations?

1、Connection of conductors

The conductor connection requires low resistance and sufficient mechanical strength, and the connection must not show sharp corners.Medium and low voltage cable conductor connection is commonly used crimping, crimping should pay attention to:

　　(1)Selection of suitable conductivity and mechanical strength of the conductor connected to the receiving;

　　(2)The clearance between the inner diameter of the crimp tube and the outer diameter of the connected core is 0.8～1.4mm;

　　(3)The resistance value of the joint after crimping should not be more than 1.2 times of the equal cross-section conductor, and the tensile strength of the copper conductor joint should not be less than 60N/mm2;

　　(4)Before crimping, the conductor outside the nominal and connecting tube inner surface coated with conductive adhesive, and use a wire brush to damage the oxidized film;

　　(5)Sharp corners, burrs, etc. on connecting tubes and core conductors are smoothed with a file or sandpaper.

2、Internal Semiconductor Shielding Disposition

Where the cable body with internal shielding layer, in the production of joints must be restored to take over the joints of the conductor sector of the joints within the shielding layer, the cable's internal semiconductor shielding are to leave a part of the connecting tube on the connectors may be connected to each other, to ensure that the internal semiconductor continuity, so as to enable the joints to take over the field strength of the proportional distribution.

3、Handling of external semiconductor shielding

The outer semiconductor shield is a semi-conducting material that equalizes the electric field outside the insulation of cables and joints, and like the inner semiconductor shield, it plays a very important role in cables and joints.The outer semiconductor port must be neat and even also requires a smooth transition with the insulation, and in the joints around the semiconductor tape and the cable body of the outer semiconductor shielding lap connection.

4、Handling of cable reflective force cones

Construction of the shape, as far as the correct inch of the reaction force cone, in all the cone on the potential dispersion is equal, in the manufacture of cross-linked cable reaction cone, individual to take special cutting tools, can also be slightly heated with a micro-fire, cutting with a fast knife, the basis of the molding, and then scrape the 2mm thick glass, and finally sandpaper from coarse to fine sanding until lubrication for to.

5、Metal shielding and grounding

Metal shielding in the cable and the role of the joints is important to conduct the cable fault short-circuit current, as well as shielding electromagnetic fields on the neighboring communications equipment electromagnetic annoyance, the operating state of the metal shielding in a good grounding condition is at zero potential, when the cable faults, it exists in a very short period of time to conduct the short-circuit current can be.Grounding wire should be reliably welded, the two end boxes cable body on the metal shielding and armored tape solid welding, the grounding of the terminal head should be secure.

6、Sealing and mechanical maintenance of joints

The sealing and mechanical cover of the joint is to ensure the insurance and reliable operation of the joint.It should avoid penetration of water and moisture in the joints, and in addition, the joints should be equipped with joint protection grooves or cement protection boxes.

Well, the device power cable connector precautions are introduced here, I hope to help you!

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