Connectors are essential components in electronic devices, and when observed along the path of current flow, you will always find one or more connectors. The form and structure of connectors are ever-changing, and there are various forms of connectors depending on the application object, frequency, power, application environment, etc.
The purpose of several different types of connectors:
Concentric connector
A concentric connector is a small plug socket type connector that has a small size and functions as a switch. Concentric connectors are suitable for low-frequency circuits and are often used in the wiring of headphones, microphones, and external power supplies.
Strip connector
The number of leads in a strip connector is generally less than tens, which is suitable for the circuit connection between printed circuits and devices.
Printed circuit connectors
Printed circuit connectors are mainly used to connect printed circuits in electrical or electronic equipment.
Ribbon cable connector
The socket of the ribbon cable connector is directly welded to the printed circuit, and the plug and ribbon cable are connected through piercing and pressing, which can be completed in one go, with reliable contact and convenient use. It is suitable for connecting instrument circuits.
Circular connector
The plugs and sockets of circular connectors mostly use threaded connections, with wiring terminals ranging from two to hundreds. They have the characteristics of small size and high reliability, and can meet the needs of cable connections between electronic devices.
Rectangular connector
The plugs and sockets in rectangular connectors are connected with threaded guide rods and have locking devices, mainly used for electrical connections of electronic devices, intelligent instruments and electronic control equipment.
Water pressure resistant sealing connector
This type of connector is mostly circular and suitable for circuit connections working in water or harsh environmental conditions.
RF Connector
RF coaxial connector is a small threaded locking connector with the characteristics of small size, light weight, and convenient use. It is suitable for connecting RF cables in high-frequency circuits of radio equipment and electronic instruments. Its operating frequency is generally as high as 500MHz.
Maintenance recommendations for high-voltage connectors
1. Before installation, check whether the model and specifications of the cable match the installed junction box, and prepare all kinds of equipment. Various equipment must be kept clean, especially insulation parts.
2. Insert the pressure plate, sealing ring, sealing ring, and connecting joint into the cable in sequence. Peel off the cable sheath and the semiconductor layer inside and outside the monitoring line on the 380mm length of the cable end.
Loosen the remaining monitoring wire, braid the strands, and then cover it with insulating tubing. Try to cover the insulation pipe to the root of the braid strand as much as possible, and the other end of the insulation pipe should expose a 30mm long wire.
3. Use a wooden file, sand, and carbon tetrachloride flux to remove the residual semiconductor adhesive with a length of 22mm from the root surface of the inner sheath below the monitoring line, and remove the residual semiconductor adhesive from the root surface of the inner sheath beyond 22mm
Residual semiconductor adhesive with a length of 22mm shall be removed from the inner sheath beyond 22mm and wrapped in two layers with J-20 butyl self-adhesive tape (hereinafter referred to as self-adhesive tape) on the inner sheath with a length of 22mm.
4. Loosen and braid the grounding wire under the inner sheath, then cover it with an insulating tube and expose the 30mm long wire.
5. Peel off the insulation layer of three main core wires, with a length of 30 mm, expose the wires and clean them with sandcloth and sand
6. Peel off the semiconductor layer outside the insulation layer of the three main core wires and carefully wipe off the residual semiconductor adhesive with a wooden file, sand, and carbon tetrachloride.
7. Use a 2500V.500V ohmmeter to measure the resistance of the main core and the insulation resistance between the grounding wire and the monitoring wire, which should comply with the MT818 standard
8. After completing the above process at the end of the other cable, connect the main core wires of the two cables to the connection posts of the three connection porcelain bases, and press the grounding wire onto the internal grounding bolt and tighten it.
9. The pressure plate is installed on the connecting joint, the connecting joint is installed on the shell, and the pressure plate is installed on the pressure plate and compresses the cable.
10. The external grounding should be reliably connected to the underground grounding network. During installation, the rubber seal of the outlet part should not be too tight to prevent deformation of the core wire and affect insulation. The inspection of the junction box should be carried out simultaneously with the cable. If the temperature exceeds 80 ℃, the cause should be immediately studied and resolved in a timely manner. When checking, check whether the fasteners, warning signs, etc. are complete.
