The plinth is the main element of the telephone cross. The plinths are intended for switching subscriber or connecting lines of telephone networks. Each plinth is an element of a cable terminal device. It is installed in telephone boxes, boxes, and cabinets using mounting clamps. The world's leading manufacturer of plinths is German company ADC KRONE, engaged in the development and production of network communication equipment for high-speed transmission of digital, voice or visual data for corporate and private clients. ADC KRONE products are supplied to more than 150 various countries peace. ADC KRONE's customers include operators of fixed and mobile telephone networks, as well as all those enterprises and organizations that wish to implement high-tech intradepartmental telecommunications solutions.
According to the type of contact, Krone plinths are divided into open and non-open. Krone openable plinth intended not only for connecting, but also for protecting low-frequency cables of communication networks. It has 10 pairs of nests. The cables are connected with outside using special single-pair forks, while with inside The plinth separates telephone pairs according to subscriber numbers. The design of the Krone disconnectable plinth provides the option of installing lightning protection. Buy Krone plinths It is possible not only in many specialized stores, but also on the Internet.
To potential clients those who wish buy Krone plinths, a wide range of products is offered, the most popular types:
Breakable plinth 2 10 Krone with normally closed contacts - plinth with normally closed contacts for 10 telephone pairs. It contains circuit breaking contact elements electrical connection. It is possible to monitor circuits in both directions, as well as the ability to install integrated protection elements;
The 2 10 Krone universal release strip is similar to the previous model. Differs in installation versatility: can be installed on mounting rods and mounting clamps;
Breakable plinth 2 10 Krone category 5e - with normally closed contacts. Designed for 10 pairs. Designed for a center-to-center distance between mounting rods of 95mm;
Boxing BCTO. Kronovsky plinths (for insertion)
Installation of Kronovsky plinths (for insertion)
Installation of Kronovsky plinths (for insertion)
Installation of plinths “for insertion” is carried out with a special tool, one of the varieties of which is shown in the following photo
Retractable hook at the bottom of the photo for pulling out the pressed wire
When creating the page, I came across the lack of a good popular name for this tool. Crossroads workers and installers in our area (Vitebsk region of the Republic of Belarus) use the words “gun, scissors and knife” to refer to this thing. In my opinion, this tool could just as well be called a “stapler.”
Official names vary greatly depending on the model and manufacturer. Here is a small list of names that mean, in principle, the same thing: touch-sensitive universal mounting tool; mortise universal tool; mortise tool for cross; percussion instrument, etc.
The main working part of the tool is arranged in a rather complex way. The head largely follows the shape of the slots in the plinth and also contains scissors for cutting off excess wire (see photo).
Pressing and trimming cross-connections using a mortise tool
Pressing and cutting of cross-connects is carried out by pressing the working part of the tool into the groove of the plinth with the embedded wire. When pressing, a characteristic click is heard, which comes from the operation of the mini-scissors. The trimming function can be disabled on the tool handle.
The technology significantly speeds up the installation process of plinths. It takes more time to disassemble the cable wires than to press them in. In essence, pressing 10 pairs is 20 smooth presses into the required points on the plinth.
Currently, several varieties of such instruments are produced. Some of this variety differ only in the shape of the handle, others in the shape of the head. When choosing, you need to make sure that it fits the installed plinths. Since there are often cases when on a large cross-country there are two types of tools for plinths installed in different time or from different manufacturers
There are similar tools in nature and more complex design and even with electric drive and battery. Some products add the ability to press in not a single wire, but a pair or even five pairs at once.
The plinth is the main switching unit of the telephone distribution network. It is used for the purpose of switching connecting/subscriber telephone lines. IN constructively it is a housing made of non-flammable plastic, into which so-called “mortise contacts” are integrated, forming groups. Their peculiarity is as follows: to create a contact there is no need to remove and solder copper wires from the wire. Actually, thanks to these contacts, a high-quality connection is ensured.
Openable plinth and non-breakable - the most common types of cross-connect equipment of this type. The first one is designed in such a way that a cable is connected on one side, and on the other its copper pairs are distributed to subscribers. The design of the second provides for the possibility of installing an additional element (for example, lightning protection).
Regardless of the type of plinth, its main characteristics include the number of pairs, installation method, and type of contacts.
Types of plinths
Depending on the characteristics of the contacts, which are determined functional purpose, plinths are distinguished:
There are also rod plinths and a clamp. This means that when installing the first device, a rod is used, and for the second, accordingly, a clamp is used.
Installation and Application
The plinths are installed in telephone boxes, cabinets and boxes, after which they are used for their intended purpose. This may involve additional accessories, For example, frames 19 for plinths. To secure the conductor in the plinth, it is first placed opposite the contact group, after which a mechanical impact is exerted on it with a special shock-spring tool. As a result, the wire is pressed between the contact blades, which simultaneously cut through the insulation. Thus, a reliable connection to the core is obtained. The excess part of the conductor is removed using the scissors of the tool used or the same contact blades.
Dismantling works are greatly simplified if you use a hook hidden in the handle of the tool. IN Lately The following trend is observed: telephone lines are increasingly being assigned the function of high-speed data transmission, which explains the growing requirements for the quality of the lines themselves and cross-connect equipment. In this case, the choice of plinths should be approached with all responsibility.
One of the main elements of a telephone crossover is a plinth. This device performs the function of switching subscriber and connecting telephone lines. Externally, the plinth is a plastic case, on the front of which there are two rows of mortise contacts. There are 10 contacts in each row. Depending on the model and your preferences, you can choose plinths whose contacts are numbered from 0 to 9 or numbered from 1 to 10. This does not in any way affect the actual functionality of the device, and is intended only for the convenience of installers.
A specialist from the network equipment company https://e-server.com.ua will tell you about plinths.
10-pair plinth, non-opening, universal, num. 1...0
The specificity of contacts on plinths is that in order to terminate the conductor cores, it is not necessary to strip the insulation. Using a special tool, the conductors are simply pressed deep into the contacts, and the sharp knives of these contacts cut through the insulation in the right places and ensure reliable fixation of the conductors.
EServer plinths are presented mainly in two types: openable and non-openable plinths. Openables work as follows. A cable is connected to it from behind, and its cores are distributed among the contacts along the subscriber lines. In non-opening versions, it is possible to install additional element– in particular, lightning protection.
The plinths differ, first of all, in the types of contacts. The 10 normally open plinth allows you to quickly connect linear circuits to terminal equipment. In the normal state, the conductors in such plinths are open, and special cords or plugs are used to switch them.
Normally closed plinths make it possible to obtain detachable connections. IN this type the contacts between the pairs are in a switched state. But their connection can be easily broken using a special plug installed between the junction of the contacts. Plinths with normally closed contacts have a number of design features: The guide lugs make the termination of conductors much easier, and thanks to the labyrinth-shaped plastic protrusions, the conductor can be pre-fixed in them even without termination.
Plinth 10 pairs, openable, universal, num. 1...0
The 10-pair non-breaking plinth differs from others in that it provides a permanent connection that cannot be broken. In plinths with non-breaking contacts there is an additional branch contact. This contact is placed between each contact pair. It is designed for parallel connection a control cord or arrester magazine, which allows you to protect the connection from overvoltage. To connect the grounding conductors, grounding strips are used. A ground wire is permanently connected to them, connecting it to the ground terminal.
To install telephone plinths, special boxes, cabinets or telephone boxes are used. Installation is carried out using special metal brackets (or, as they are commonly called, clamps). Depending on the capacity of the bracket, the most different quantities plinths. But besides installing it on a bracket, there is another option - attaching the plinth both to the bracket and to special vertical rods with a leg diameter of 12 millimeters. After installing the plinth on the bracket, it can be fixed in the box for plinths. The box is a protected box equipped with cable entries and exits, as well as a lock.
The EServer telephone plinth is a quality product, allowing you to reliably switch connections in networks. Along with plinths, all the accessories necessary for stable operation of the network are also available for sale.
plinths- these are the most important connecting elements of the telephone cross-country. The purpose of plinths is to connect subscriber or telephone lines, which are installed in telephone boxes, cabinets and boxes on mounting clamps.
The main characteristics of the plinth are: the type of contacts, the number of pairs, and the method of fastening in the cross. According to the working purpose, there are four types of plinths: plinth with normally closed contacts, plinth with normally open contacts, plinth with non-breaking contacts, and grounding plinth. Disconnectable plinths are specialized for both connecting and shielding low-frequency cables of the telephone network. The opening plinth looks like, plastic construction and has 10 pairs of nests. On the inside of the plinth, telephone pairs are distributed according to subscriber numbers, and cable switching is implemented on the outside using specialized single-pair plugs. The design of the disconnectable plinth provides for the possibility of installing lightning protection.
The contact group is numbered, switching with the cable occurs through a special percussion instrument. IN telephone plinths It is possible to install a comprehensive protection module. This complex makes it possible to reduce electromagnetic, electrostatic and galvanic influences to an acceptable value established for telephone network equipment. Reusable use allowed. A plinth with non-opening contacts for 8 or 10 pairs allows parallel connection for control purposes or for installation of overvoltage protection elements.
Telephone plinths for 8 and 10 pairs of contacts are widely used. The marking of plinths by number of pairs is 2/8 and 2/10, respectively. There are telephone plinths marked 2/8x3. Most often, plinths are installed on rails or brackets in distribution cabinets and boxes. Several standard plinth fastening systems are used. This makes it possible, if necessary, to replace or add plinths without any problems.
On plinth price varies depending on the functional purpose of the plinths, also on the number of contacts and on the manufacturer’s brand. The country of manufacture also affects the price of the plinth. If you have firmly decided " I'll buy a plinth", it is better to choose equipment from the German company KRONE. Purchasing a reliable plinth will provide highly reliable contact that meets the strict electrical and mechanical requirements of the Ministry of Communications for operation in any conditions environment. This reliability is possible through the use of unique IDC technology (mortise contact technology).
