Tips for wire crimp how Connection cable

Tips for wire crimp provide a reliable and tight connection of cables, which is one of the conditions for a secure connection of home appliances to the mains. In this article, you can learn in detail about all the features of these products, including their types, dimensions and marking. The text provides an overview of the technology and the single double crimping ferrules, as well as products intended for the power cable connection.

Tips for wire crimp: basic characteristics

Lugs (terminations) of wires - universal parts used for the contact cable connection. The use of such products has a positive effect on the operation of the circuit as a whole. In the market represented a huge range of different types of tips, so the user is not difficult to choose the appropriate option to carry out certain work on the wiring.

Tips for stranded wire allow you to create a secure connection with the various components of the electrical circuit:

• screw terminals;
• terminal block;
• household appliance;
• another cable.

Tips perfectly manifest themselves in chains, where often there are strong vibrations. They can also be used in cases where the standard connection methods are not suitable. For example, if the wires are not long enough, it will be impossible to use a soldering or welding method. For crimping the wires in such a situation on the bare end of a ferrule or sleeve mounted, after which the crimped portion.

The advantages of using lugs:

1. Beam lived remains intact, it is not flattened and does not fall apart.
2. Connection area does not burns and is not heated.
3. It preserves the integrity of the wires.
4. Metal wires are protected from moisture and air.
5. All bundle wires are involved in the current transmission.
6. Terminals have a large contact area.

Compound cables crimping method is used in manufacturing (power connection lines) and in the domestic environment. The popularity of this method, in contrast to the use of conventional terminals is due to high reliability. In addition, to connect the wires with the nib is much easier than using a soldering or welding.

Note!Size lugs wire crimp and carefully selected liner with the main wire characteristics. Such parameters include the diameter of the cable and the type of metal of which it is made.

How to decode the marking tip for wires

To consumers it easier to navigate in the proposed range of tips, there is a special system of markings. It allows you to define the material of construction of the detail as well as its purpose.

Deciphering the lettering:

1. A - products made of brass.
2. T - is used for manufacturing parts of the tubular metal section.
3. A - Aluminum sleeve.
4. M - copper products.
5. Y - angle handpiece forms.

Explanation tip TML 70-10-11,5 as follows:

1. T - for the manufacture of the coupling piece used in the form of semi-finished tube.
2. M - producing material served as copper.
3. A - third letter display processing method of the material from which the manufactured item. In this case, the tip is made of tinned copper.
4. 70 - section size (measured in mm).
5. 10 - aperture size intended for fastening a bolt (diameter in mm).
6. 11.5 - shank size, inserted into the wire. This refers to the inner diameter, which is measured in millimeters.

A table containing information about common options markings:

lettering	transcript
TML	Universal product made of tinned copper, which has a high degree of protection from external influences
THERE	Tip for connecting wires of aluminum. It has copper-colored contacts
NSHVI	Sleeve pin type insulation products used in household conditions
TA	Part made of aluminum, which is used solely for the connection of wires of the same material
CIP	Aluminum insulated tip of the tube and the plug made of copper

Note!Sometimes the marking tip on the wire contains the letter "O". This indicates that the product has a viewing window. It is used to monitor the connection zone and makes sure that the wires are placed inside the sleeve correctly.

Connectors for wire crimp: types of tips, sleeves and terminals

There are a variety of tips used for crimping. Be sure to take into account the way in which will be executed in the wiring. If it is assumed that the cables are clamped in the circuit breaker, then the connection is better to use pin bushing products. On sale you can find tips with or without insulation. This same embodiment is applied to manufacturing cables that are clamped by means of contact pads.

If the wiring is secured by a nut-screw, then the need for special connectors. These include the following types of terminations: U, J and O. After installation of the clamp to the contact pad using the same screw. There is another class of compounds - a tip of the "male-female". They are a quick-release products that are very easy to use.

The shape of the design the following types of tips for swage of wires:

• ring;
• power;
• forklifts;
• tube (sleeve);
• in the form of sockets (used for rapid connection);
• pin.

Furthermore, handpieces are classified by the type of material from which they are made.

Tips for cables: types of products, their purpose

The connecting member is selected considering the type of conductors to which it will be installed. The most common and popular are the following tips:

• copper;
• aluminum;
• aluminum-copper;
• bolted.

Copper product variants designed for crimping cables, made of the same material. For the production of these parts are used weldless tube. On one side of the tip is pressing portion. On the other hand a tubular connector located hole, where a wire will be introduced. Appointment copper tips:

• connection to the circuit input and switchgear;
• installation of electrical appliances;
• ground.

Aluminum products, as well as copper, used for wires made of the same material. On the one hand, they also have a tubular opening, but on the other hand they are the contact blade.

Important!Before you connect the wire crimping tool for the ferrules, aluminum products should be treated with quartz-vaseline. It protects the contact area from oxidation.

Sometimes the distributors used copper bars. In this case, the aluminum-copper connectors. These elements landing tube made of aluminum, and the contact blade - copper. In the production of these products is used frictional diffusion. technology may also be used gasdynamic copper deposition method in which a metal is deposited on top of the tip, providing a stable contact.

The bolt type fixing lugs by means of the clamping bolt. To tighten it, need a wrench. This method does not require crimp because the bolt itself performs the contact connection.

Main types of crimp terminals to the wires of copper

During manufacture of the tube are cut copper connectors accordingly. Thereafter, on the one hand formed by flattening the contact blade. It is performed by fixing hole, whose size depends on the diameter of the bolt.

Copper lugs for cables come in two types:

• without a protective layer;
• with solder coating.

Contacts with solder coating is much more practical, since they are protected against corrosion. Due to this, this type of products has a long operational life. Connectors with solder coated are resistant to the aggressive action of various acids:

• sulfuric;
• nitric;
• hydrochloric acid.

They do not break down under the influence of moisture, air, and other negative environmental factors. Due to the presence of the protective coating layer conductivity terminals is reduced, but this does not prevent them to maintain optimal performance.

As for copper connectors without the protective coating, the oxidation of these products is much faster. current conduction Indicator they have very low, due to which resistance is enhanced. As a result, the joining zone is heated.

Scope of copper lugs extend:

• to establish communication between devices (possible use case on a group of devices);
• forming the connection between the device and the electric grid;
• increase in length of the cable splice method.

Experts advise to use to install the copper connectors on wires press crimping pliers. In spite of the extensive range of products offered by the manufacturers is not always possible to choose an element of the desired size. In this case you should make your own tip. To do this, selected copper pipe of the correct size, and then is flattened at one end. For fixing bolt hole therein is performed corresponding diameter.

Important!Tips manufactured in makeshift conditions, its characteristics are inferior products factory. It is very difficult to calculate what level of load they can withstand, so it is not recommended to use home-made connectors on the critical areas of the circuit.

The use of sleeves for wire crimp

In some cases, the connectors may be used instead of the tip of the sleeve to the wires. If required splicing cables in which the conductors are made of copper, for use with a mark GML products. This marking indicates that the sleeve is made of copper and coated tinned protected. To connect aluminum conductors are products labeled GAO. They are aluminum sleeve with a closed design. In addition, there are liners made from alloys. They are used in cases when it is necessary to combine aluminum and copper elements.

Compound of wires by crimping lugs or sleeves is a more qualitative than splice soldering method. Stranded cable is composed of several conductors, each of which is hidden in its own insulating sheath. For a reliable contact, they all have to be naked, that creates some difficulties when using soldering. With crimping such problems do not arise, since the compression process is destroyed insulative layer on each core. Due to this strong connection is obtained, but also provide better contact.

If the pressure test will be carried out sleeves, it is important to pay special attention to the selection of products, in particular their manufacturing material. Typically, they are written current characteristics. The main difficulties in the process of purchasing products arise when you need to select the appropriate size. Manufacturers in this area offer a limited range. In addition, a person without special education is difficult to decipher the markings.

wire crimping sleeves is performed using exactly the same as when using the tips, however, will require more crimps.

The main varieties of crimp terminals for wiring

The connection terminals can be divided into two categories: electrical and electrical. The difference between these products is only in the magnitude of the current load they can withstand. This option must be considered, selecting terminals for crimping wires during installation or repair chains.

Related article:

Pliers for crimping wire: types of tools and methods of use

Functional purpose. Professional and household tools. Hydraulic tongs. Crimper Crimping Internet wirelessly.

The most popular types of crimp terminals with simple design:

• forklifts;
• cutlery;
• pin;
• ring.

Blade-type terminals - the most common variant. They are found mainly in appliances for domestic use, e.g., refrigerators, irons or heating devices. Cutlery terminals mounted on stranded wire, the size of the cross section of which is in the range 0,26-6 mm².

On sale there are isolated and non-isolated versions. The coloring of the insulating material depends on the rated power. It can be yellow, blue or red. Such products are used in pairs ( "male-female").

Important!The maximum voltage that can withstand such a compound is 5 kW. Therefore cutlery terminals can not be installed in power plants of large size with high power output. It is also not allowed to install them in residential electrical shields.

Fork terminals are used in the secondary or power circuits. After their installation is supposed to screw fastening to the tires or power equipment. This manufacturing variant is considered a temporary one. You can use a fork-type terminals in areas where reconnection is often performed contacts. Externally, these terminals look like a fork with two prongs. They are used for crimping wires, cross-sectional dimension of less than 6 mm². Available in two versions - with or without insulation.

Terminals annular shape provide a very reliable contact. Like the fork, they subsequently fastened with screws. Due to the fact that the contact portion has a circular shape, increased bond area. Additionally, reducing the likelihood that the tip will pop up. Suitable for low-voltage and power networks. cable cross-sections may be different. Ring terminals are aluminum, brass, copper, aluminum and copper.

Pin terminals have a split structure consisting of a plug and a socket. Blue products are designed for cables with a small cross section - up to 2 mm², and yellow - from 2 to 6.64 mm².

Features of use NSHVI tips

Electrolytic copper is used for the manufacture of interdigital core tips. On the back side of the product is insulation. To prevent damage to the corrosion of metal, copper plating is processed by tinning. The size of these tips varies between 0,25-150 mm.

When crimping NSHVI saves time, simplifying the process of connecting electrical devices. Tips are suitable for domestic use. They are designed for crimping of stranded wires of any kind. NSHVI manufacturers produce two types. Some tips are used to crimp a wire, while others are designed for two.

Products labeled as follows:

1. Single - marking the first digit represents the cross-section size, and the second shows the contact portion of the length.
2. Double - digit "2" in parentheses indicates that the tip is designed to splice two wires and the next number indicates what the size of the cross section of each of them.

Desirably, the size of the shank of the tip was slightly larger than the cross section of the wire, r. F. his bare living. Thus, the cable must acquire 1.25 mm NSHVI section of 1.5 mm.

Note! NSHVI intended only for multicore cables. We do not recommend the use of sleeve pin crimp terminals for wires with a living because they these products are bad stay.

The basic rules of the wires are crimped sleeve-type tips

Qualitatively connect the wires using the tip and can be at home without professional skills and knowledge. To do this, you need to stick to the basic rules:

1. To choose the right type and size of the tip of wire crimp.
2. Thoroughly clean and wires correctly.
3. Use only the dedicated tool.
4. Exactly observe crimping technology.

Typically, the wire insulation is removed based on the size of the contact portion of the tip. After stripping the core end must coincide with the edge of the sleeve. To achieve this, to the cleaned portion of the length necessary to add 2-3 mm. It is very important to choose the correct tip size. To avoid mistakes, we must be guided by color coding, in which colored insulating sleeve.

There are some subtleties in the work with insulated connectors. Be sure to make sure that the insulation on the wire to the stop sign inside the cuff, and completely covers it.

Preliminary work carried out in the following order:

1. The cores are cut exactly perpendicular.
2. To remove the insulation layer with the veins, it is necessary to consider the size of the shank and allowances.
3. If the copper wires, their surface must be removed oxide film. For this purpose the exposed portion is degreased and then lubricated with Vaseline technical purposes.
4. If the form is lived pie, have them rounded.
5. If the wire strands are made of aluminum, the metal need to clean to a shine. Thereafter, the exposed portion is processed quartz-Vaseline grease which will prevent the oxide film.

The crimp terminals for wiring: a list of suitable tools

To install the metal connectors on the cables are not allowed to use the tools that are not designed for this purpose. There are special tips for obzhimniki wires. Each of them has unique abilities, so it can be used in certain conditions. The scope of the use of different kinds of tools for crimping wires tips:

1. Press ticks PK2M and PC2 - designed for crimping wires, cross-sectional dimension of less than 10 mm².
2. Press ticks PK1M and PC1 - manual tongs, which are much more powerful than the previous version.
3. Hydraulic tongs - are designed for crimp cables having a cross section up to 10 mm².
4. Manual press - used in industrial production on wires up to 240 mm².
5. Electrically driven hydraulic press - is designed for crimping conductors up to 300 mm².

Tool, complete with hinges, has an increased pressing force. In this case the person does not have to exert much effort to establish a tip. The most convenient in tools considered ratchet.

Important! Before you get started, make sure that the diameter of the hole (the matrix) on the instrument is set correctly. Otherwise, it can damage during crimping tip.

Tech tips for swage of wires: single, double and power

If splicing is carried out using the tip for the first time, it is advisable to practice before you get to work. You can use an unnecessary piece of cable. Otherwise, the wizard runs the risk of ruin not only the connector, but the whole wire.

Recommendations for the use of single pin terminals for wires:

1. To prevent the loss of live from the slot when placing the wires in the instrument it is necessary to fix the hole.
2. Crimping with pliers is performed before the moment when connected ratchet mechanism that locks the tool, preventing its unclamping.
3. If you are installing the connector is made by hand, the degree of its quality can be determined by pulling the tip of your fingertips. If done correctly, the item will be to sit tight and will not move.
4. You can use a bypass crimping tool. In this case compressed and the sleeve insulator in the nests having different diameters.

a phase two wire connection can be established via single contact. If you are installing modular machines for the connection need to use special jumper. As a result, one terminal attached two cables. In this case, the wire crimping ferrules desirable to use NSHVI.

Such a procedure has its own characteristics:

• the cuff two cables are inserted simultaneously;
• Crimping is preferable to use press jaws having a size of matrix 6 mm².

Otherwise double connector installation process is the same as the single.

recommended tinned copper articles with a protective coating crimping power cable lugs. Sometimes after pigtails raspushivaetsya its edge and increases in size. If this happens, you need to remove the excess on the edges with the help of the winepress. Wire should be deployed so that the grinding wheel cut off the excess along the veins, but in any case not bend them.

Regardless of the type of tip alignment method is not allowed to soldering crimping. It is impossible, so that the contact portion on the wires was made of pure tin. Terminals are usually crimped 1-2 times at a distance of 1-2 mm, liner - from 2 to 4 times.

Before installing the tip, make sure that the wires are cut to the same length. Otherwise, the connection will be of poor quality. Sometimes the veins are damaged or broken, so you can not twist the wires to the tip assembly. If this requirement is ignored in the process of crimping they will be squashed by, disrupting power transfer.

In general, by pressuring the cables in the home can handle any. The main reason for the error is a discrepancy between the size of the wire and tip. Not recommended for use in home-made connecting parts. Also, do not cut the liner into two parts in order to save.