Designing of electric systems

What for to you to waste time on searches of the separate executor for separately taken area of engineering system, to correct and mate in a single whole results of their work? The company " Proxima" incurs the decision of a complex of engineering problems with which you collide at the organization of the business, gives confidence and exempts additional time and forces which can be used there where it is more necessary. Firm " PROXIMA" carries out projectes electrosupply (internal electric equipments) any complexity on the following directions:

• offices ;
• apartments;
• cottages ;
• apartment houses;
• office buildings ;
• trading complexes ;
• establishments financings and crediting ;
• the enterprises of health services ;
• other

Works are carried out by the qualified experts with use of modern technics and the equipment. It is carried out guarantee and after guarantee service of the executed works. Insurance of the executed works is possible. By preparation and discussion of projects we give the customers of the description of the executed projects and  responses about our work other companies , and also an opportunity of visiting of objects where our employees already worked. Our company has the license for designing and carrying out of installation works.

We carry out installation works , starting from the project (or checks of an existing electric network) before delivery in operation of electric systems:

• Development of the design documentation on a network and systems: electrosupply up to 35кВ inclusive.
• the Lining of networks of electrosupply: up to 35 kilovolt, inclusive.
• Works on the device of external engineering networks and communications: a lining of communication lines, radio, TV (main cable connecting; local cables of communication lines, electric, optical fibre, air-lines of connection)
• Works on the device of internal engineering systems and the equipment: the device of electrosupply up to 1000 In, the device of an electric lighting.
• Installation of the process equipment: linear - cable constructions of connection.

The project of electrosupply is subject to the coordination with power supply the organization which was giving out specifications, and with local body of Gosenergonadzor. Operation of electroinstallations should be carried out according to requirements of Instructions for use the electric power, Service regulations of electroinstallations of consumers, Safety precautions regulations at operation of consumers. The responsibility for a technical condition and safe operation of electroinstallations, electric posting, an electric equipment (devices, devices, etc.) Objects of a private property it is assigned to the consumer (subscriber) of an electric network. The electrosecurity of people as inside object, and outside should be provided with a complex of electroprotective technical actions. Connection of electroinstallations of object to an electric network is made by the personnel power supply the organization which were giving out specifications. The consumer should provide serviceability of the electroinstallations. And nbsp;   the Consumer is not authorized to connect electric loading over resolved in specifications, and also to increase rating values of currents of fuses and other accident protection devices determined by the project. All electric equipment should meet the requirements of GOST and to be industrial manufacturing.

In projects the equipment of conducting world manufacturers is used. Materials and to technology for manufacture of works meet the newest requirements of normative documents and recommendations in the field of wiring, an electrosecurity, power supply and automation. Before us always there is a problem of reduction in price of any system. Supervising the prices for materials, we always offer optimum decisions for specific targets at observance of all specifications on the project. Due to all aforesaid we constantly win tenders . We hope, that our prices of you will pleasantly surprise.

we sincerely hope, that any customer, irrespective of amounts of executed works will estimate not only competence and professionalism of our employees, but also the attentive attitude to him.

Analyses of the market of electrotechnical armature

Analyses, ideas, advice at the choice of an electric equipment

Ideas, practical advice, analyses on energy-saving, to maintenance, independence

Comfort - a trick

Electric networks

Construction of electric networks includes the following stages:

• Inspection of object and development of the technical project on on basis of  requirements of the customer.
   
• Designing   
• the Complete set, direct deliveries from leading manufacturers of the equipment for creation of systems of power supplies.
   
• Installation and starting-up and adjustment works.
   
• Release of the complete set of the documentation.
   
• Guarantee and after-sales service and service support of all elements of system.

Definition of necessary electric capacity in view of characteristics of electric loadings

By development of an electrotechnical part of the project it is necessary to determine electric capacity which transfer it is required to provide for normal work of object. Depending on this value named settlement loading, all electric equipment of an electric network providing transfer of required capacity gets out. Discrepancy of definition of settlement loading entails unreliability of electrosupply. The maximal capacity consumed by group of electroreceivers with variable loading, always is less than sum of rated power of these receivers. It speaks that receivers are not always loaded on full capacity, and their greatest loadings do not coincide on time. It is necessary for taking into account at a choice of elements of system of electrosupply.

Creation of the circuit of a distributive network inside a building

The structure of the circuit of a distributive network inside a building is defined by type of electric loadings, according to the technical project.

The circuit should provide:

• reliability of electrosupply (protection of a network against an overload and currents of short circuit);
• performance of requirements of PUE and other normative documents working in territory of Ukraine;
• the minimal resulted expenses;
• to provide safe operation of object.

  Creation of group networks

The electroreceivers attached to force distributive points by means of group floor dashboardes, unite in groups in view of their technological purpose. For switching single-phase group lines bipolar switches can be used both unipolar, and. Are if necessary established the device of protective switching-off, providing protection against defeat by an electric current.

Distribution of loadings between phases of a network should be, as a rule, uniform.

System engineering of internal illumination

In inhabited and public buildings, the system of the common illumination, in some cases where visual work is carried out as a rule is applied, the system of the combined illumination is carried out.

The system of illumination inside a building shares on two kinds: working illumination and emergency (illumination of safety and evacuation illumination). Emergency lighting and indexes "Exit" join, as a rule to a network of emergency illumination.

Taking into account, that networks of illumination are characterized by the big extent and a branching, is settled an invoice lighting networks on loss of a voltage and on conditions of allowable heating conductors.

Necessary calculation is made for accommodation of fixtures inside premises in view of parameters of artificial illumination or on presented design - to the project.

the Device of internal electric networks

Internal electric networks should be not distributing burning and to be carried out by cables and wires with copper veins according to requirements of PUE. Connecting and branch boxes, lingering boxes and others branch devices should be made of nonflammable materials. Metal elements electric wiring (designs, boxes, trays, pipes, boxes, crampes) should be protected from corrosion.

The type and a way of a lining of a cable depends on a material from which building designs of a building and such as the electroreceiver are executed.

  the Organization of the account of electric energy

Settlement counters of electric energy are established in points of balance differentiation according to requirements of PUE.

Counters get out in view of their allowable reloading ability.

At a lining of introduction cables presence of a reserve cable for receivers of II category which should be used in emergency operation (at switching-off of the first section of transformer substation) is provided.

The type of having cables should correspond to conditions of operation in the given climatic zone.

Mark and the way of a lining of a power cable inside a building is determined by type of electroreceivers, architectural decisions, a degree of fire danger of premises in which works are carried spent.

That it is necessary to know before the beginning of designing and installation of an electric network of inhabited and public buildings?

The electric equipment again builded or reconstructed object should correspond to requirements of Ukrainian building norms working in territory, state standards and rules of designing.

The basic normative and technical document are « Rules of the device of electroinstallations » (PUE-6,7editiones), and also the arch made on their basis corrected « Designing and installation of electroinstallations of inhabited and public buildings », agrees which it is necessary to carry out the following requirements:

For reception of the sanction to using the electric power the consumer should submit the application in power supply the organization to which networks it is planned connection  new object or change of power consumption of reconstructed object.

In the application for the conclusion of the contract should be specified:

• the name of object;
• the location;
• settlement loading in watts (kw);
• a level of a voltage (0,4) in KV , i.e. standard voltage
• categoring electrosupply;
• a mode of consumption;
• the obligation under the admission for check of means of the account, a condition of an electric equipment and electrical installationes the consumer.
• necessity of application of the electric power on the thermal purposes.

Conditions of the conclusion of the contract between the consumer (subscriber) and energy-efficient the organization:

• Specifications on connection to electric networks;
• the document of borders of a balance accessory and the responsibility of the parties;
• Presence of means of the account of a current consumption and their readiness for operation
• Presence of the project executed by the organization, having the license for designing.

In the project should be reflected:

• the circuit of external and intraobjective electrosupply with the instruction of types and settinges protective devices, sections and marks of wires, settlement currents, devices of the account of the electric power, connection to a power line;
• the plan of an arrangement of an electric equipment, a lining of cables, wires, ground conductors;
• the specification of an electric equipment of products and materials;