The pin tip is made of electrolytic copper and is used for fixing on the ends of the wires. Fastening is carried out by crimping using a specialized tool.
Description
NShVI provides a universal connection at the ends of electrical cables, thereby maintaining the integrity of the wiring when using screw clamps, and improves contact at the connection point, forming greater reliability. The cables used must be made of copper and have a section within 35 mm2.
The pin end of the sleeve is based on a material that has been processed by galvanic tinning. It has many advantages, the main of which is a significant time saving in the process of connecting to electrical devices, connecting and further servicing copper wiring.
Design
Products are divided into two types: double and single. They are convenient foruse by the fact that it takes a few seconds to install them on the cable. This is ensured by the method of fixation, which is fast and practical. When using such a technique, there is no need for subsequent maintenance of the resulting connection, constant monitoring and periodic inspection. The tip of the pin NShVI has a primitive design and does not require special skills to use. It is made in the form of a copper tube, one side of which is flared to simplify the cable entry into its cavity. It also has a polyamide cuff that acts as an insulating element.
Application
When connecting stranded copper wiring with screw terminals, there is a possibility of them being crushed during the tightening process. In order to prevent this, a pin tip is used. Connecting without special products can lead to squeezing and breaking of cables when tightened, due to which the quality of contact deteriorates, there is a possibility of burning, sparking and other undesirable consequences. The main purpose of this method is to prevent damage to the strands of the wire.
Such difficulties do not arise due to obtaining high-quality and reliable contact when crimping the plane of the product and wiring, in which the mechanical load of the connection falls on the sleeve, and not on the cores. There are elements with different sizes of sleeves, each of which is suitable for wires with different sections. Color coding is used formore accurate diameter measurement. So you can determine the purpose of a particular product. The connection itself does not cause difficulties, the main thing is to carefully prepare all the components.
How to attach the pin end
First you need to strip the part of the wire designed to accommodate the sleeve. It is necessary to be careful when working, the task can be simplified by using a special tool - a stripper. It is used to remove insulation and looks like ordinary pliers. With the help of this device, the time spent on work is reduced, and the process itself is also simplified. It should be noted that the cable is stripped exactly to the length of the sleeve part of the product. After removing the insulation, it remains only to insert the wire into the insulated pin lug, the choice of which is carried out in accordance with the diameter of the cable.
Then the connected elements must be placed in the pressing tongs, the groove of which must also be pre-selected. The insulated side of the product must rest against the body of the tool. The connection is considered completed after pressing the handles of the device. The wiring can now be used to connect to electrical devices.
Single and double products
The use of NSHVI not only simplifies the preparation of cables, but also provides a solid structure that will remain high-quality and reliable throughout the entire period of operation in full compliance with all technological requirements and conditions.
As noted earlier, in addition to single, double products are also used, which are necessary for the simultaneous fixation of two cables. They are optimally suited for various situations, in particular for connecting double wiring in one place of an electronic device. The clamping method is the same as the crimping process for single-type products.
The NShVI-2 pin tip has a plastic wide cuff designed for two wires, while the NShVI-1 is equipped with a narrower cuff used for one wire. The choice of product in accordance with the cross-section of the wiring must be carried out in both cases. The main condition is to ensure the tightest connection of the two elements.
Use area
Insulated pin sleeve tip has become quite widespread when connecting sockets and circuit breakers, since such devices usually use a copper stranded cable, which is also necessary for wiring. At the same time, in some types of sockets, its use is not always rational due to the presence of screw clamps in them. In the process of connecting to the switch and tightening the fasteners in the terminal block, the quality of the connection and the reliability of the contacts are reduced.
Before the ferrules were created, the problem was solved by soldering the ends of the wiring until an unbreakable structure was obtained. But given the fact that wiring entails installing many switches and sockets, it took too much solderingtime.
Insulated pin sleeve tip NShVI has become the best way out of this situation. Its fixation on the wire and connection to the equipment, subject to a competent choice of products, is carried out in the shortest possible time.
Sizes
Manufacturers indicate in the accompanying instructions the required ratio of the cross-sectional dimensions of the sleeves and wiring, which must be observed under any conditions. Only in this way it is possible to ensure reliable operation during the entire specified period and to prevent the occurrence of difficulties during the installation process. It is worth noting that a tool is of particular importance, which not only increases the quality of crimping, but also simplifies all the actions taken. Since the guarantee of the quality of the connection is the observance of the rules of the technological process.
Wiring Diagram
The scheme should include a method of powering the lighting lines of cables and all sockets available in the apartment. A common mistake is to use one line for all elements. This was rational at a time when high-power appliances were practically not used in everyday life, and to reduce costs. The outlets were powered from junction boxes that were connected to the same cable.
Today, every home has a variety of household appliances that consume much more energy, so the wiring diagram used in the past is no longer suitable,as it is unreliable and does not provide protection against excessive loads on the line. In particular, a circuit breaker that supplies power to an entire house or several rooms is not able to prevent overload on individual sections of cables, since its selection is made in accordance with the total load of lighting fixtures and sockets connected to it.
Of course, several sockets can be fed by intermediate boxes, in case they carry a low load. It is worth paying attention to the fact that when using such boxes, the contact branches placed in them become the weakest point of the entire system.
What you need to know
If there is no quality connection of all elements in switchgears, there will be a possibility of their damage during the passage of current. Ensuring a reliable connection is possible by soldering or using special terminal blocks. An insulated pin tip NShVI also turns out to be useful.
Often, during the installation of intermediate boxes, they are hidden in special recesses, covered with a layer of plaster and decorative coating. Of course, visually the room only benefits from this, but if a malfunction occurs in the system or it is necessary to check the connections, it becomes difficult to find the installation site. In order to simplify the task, it is recommended to mark the location of the boxes.
