Design, installation, maintenance of low-current systems

The low-voltage network (SCS) is an important part of the engineering communications of any construction project. It differs from the power supply network by its technical characteristics and purpose: low-voltage systems are designed to organize not power, but information support. In the "age of information" the reliability of such systems comes to the forefront; the financial well-being and even safety of the enterprise, institution, organization - the owner of the object - may depend on the stability of their functioning.
The process of designing low-current systems should be given special attention; installation of SCS should be carried out with special care.
Definition and types of low-current networks
To low-current systems can be attributed to all networks, the supply voltage in which does not exceed 60 volts, and the current strength - a few tens of milliamperes. In addition, a defining characteristic is the use of the network for the transmission of modulated information signals.
Both of these factors should be considered together. For example, the voltage in the telephone line can be briefly increased to 120 volts (when making a call), and 220 volt power networks can also be used to transmit modulated signals. However, the former are low-current systems, while the latter are not.
According to the purpose of low-current networks are divided into
telephone networks - external and internal;
television networks - transmitting terrestrial, satellite or cable, analog or digital video signals;
connection to the global information network Internet;
local area networks - linking all computer facilities of the facility into a single system;
general security networks - security systems, access control systems, video surveillance;
networks ensuring the operation of fire alarm systems;
networks controlling the ventilation system, lighting, metering devices, etc.
A separate category includes the so-called SCS systems, they are also structured cabling systems. SCS, in fact - a set of all the above networks, united by a single technical solution and logic of construction.
Requirements to low-current networks
General requirements for low-current systems are as follows:
reliability, i.e. - the ability of the network to perform all functions without exception, without interruption, under normal and even increased load;
ease of maintenance - all key nodes of the network should be easily accessible for routine preventive and unscheduled maintenance;
scalability - i.e. initial adaptability to expand network capabilities when such a need arises.
For SCS structured cabling networks the following are also important
universality - ability to transmit any type of information through the cable channel: audio-visual, digital, any other data;
compatibility - any external receiving devices should be connected to the SCS network without any additional modifications.
Network design
Designing of low-current systems is performed by the contractor on the basis of the technical specification (TS) received from the customer. TOR includes general and floor plan of the object, all technical requirements for the future network, instructions on the placement points of the so-called installation equipment (sockets, connectors, etc.) necessary for the connection of consumer devices - telephones, computers, information panels, etc.
When developing the project, the requirements of the ToR, all the above-mentioned general requirements, as well as special requirements depending on the purpose of a particular network are taken into account.
Separately, the existing design of the premises of the object is taken into account - in addition to the technical compliance of the network, its equipment must comply with aesthetic standards.
Installation of networks
Installation of low-current networks is carried out, first of all, in accordance with legally established technical norms. For each type of network there are its own rules concerning the placement of passive and active equipment - cables, distribution nodes, sockets, switches, indicators, signal amplifiers, etc. During installation, the location of wiring and cables of other networks is taken into account.
An important aspect of professional installation is the absence of the so-called "twists" - cable connections outside the switchgear. The presence of "twists" has a significant negative impact on the quality of the transmitted signal.
Installation low-voltage network is also performed taking into account the mutual location of information cables in the common channel to avoid cross "interference" - i.e., induced electrical noise.

What we offer
Elektrocity performs design and installation of low-current cable systems, including SCS systems, at the facilities of Nizhny Novgorod, Moscow, Vladimir, Ivanovo regions and neighboring regions. The company's in-house specialists with extensive practical experience of working with SCS are involved in the works. High quality materials and equipment available in the company's own warehouse are used during installation, which significantly speeds up the installation process. At the customer's request, materials and equipment are purchased from manufacturers specified by the customer.