Electrical connectors: short description

When laying or repairing the mains is inevitablewire connection required. Electrical connectors are used in devices, electronic equipment, computer, engineering, aviation and other equipment. Not only the work of the equipment itself, but also the safety of people depends on a quality connection.

Electricity grid

There are several popular ways to connect electrical circuits:

1. Twist.This is the easiest and most common option. Two strands are cleaned (about 5 cm) and twisted. Insulation is PVC tape or special caps for twisting. In no case can not use the twist when connecting the veins of dissimilar metals.

2. Soldering. It is usually used in devices. The laborious method is gradually being supplanted by special connectors. Circuit diagrams are assembled using miniature fixtures.

3. Clamp.It is an insulating plate with contacts. It allows you to connect aluminum wires with copper. Applied in the case of the connection of single-core and stranded wires of different sections. They can be detachable and one-piece. The latter require a detailed layout of the power grid.

• with a tightening screw, the disadvantage is the possibility of damage to the cores;
• spring (with a pressure plate), on the market offer a wide range of models;
• knife, for their use does not need stripping of wires, the contact is made through the plate-conductor, cutting through the braid of wires.

4. "Nutlet" (otvetitelny szhim).It is a construction of 3 metal plates, supplied with screws and embedded in an insulating box. Used to attach the wire to the trunk line without breaking it.

5. Bolt. A very effective way to connect the most common washers, bolts and nuts. Simple, cheap and reliable.

6. Crimping sleeves. Reliable tape, but requires special equipment and skills.

In many industries, used specificallydeveloped for specific tasks of the product. In addition to the above options, the industry offers rectangular and cylindrical connectors of the cut-in, threaded and bayonet joint. The Russian Ural Plant of Electrical Connectors "Iset" provides with its products several areas at once:

• railway transport;
• shipbuilding;
• autobuilding;
• all types of aircraft and other aircraft, up to the space;
• Computer Engineering;
• Oil and gas industry.

Special devices greatly facilitate the work of electricians and significantly save installation time.

Advantages and disadvantages

A variety of options allows you to select connectors for electrical wires for specific parameters. Each of them has its own advantages and disadvantages:

• twisting is not distinguished by reliability, stability and durability;
• caps (connecting insulating clamps, or PPE) require careful selection depending on the diameter of the cores, the voltage of the network and other things;
• screw terminals are able to connect no more than three wires, screws have a tendency to loosen and need periodic tightening;
• all-in-one knife terminals cannot be redone;
• "Nuts" are difficult to install, an amateur with careless work can get an electric shock.

Equipment

Соединители электрические, или разъемы для Applications in electromechanical devices consist of a plug and socket. It is customary to classify the product according to its intended purpose: the receiving side with pins is called “father”, “mother” - the power source, which looks like a hole containing contact plates.

Recently, USB connectors, the same on both sides, have become increasingly popular. Contact pads can have different configurations and differ:

• by the number of contacts;
• limit value of voltage;
• contact resistance and pressure;
• electrical strength;
• dimensions;
• operating frequency range;
• possible mechanical and climatic conditions of use.

Selection

In order for the electrical connectors to perform the function assigned to them reliably and for a long time, it is necessary to carefully consider their choice. First of all, consider the following factors:

• material lived (homogeneous or not);
• environmental conditions (room, street, water, land, etc.);
• the number of connected wires;
• cross section lived (different or the same);
• operating conditions (duration of operation and frequency of inclusion).

Primary requirements:

• ensuring reliable contact;
• mechanical strength;
• safety of people.