Creating a project of electricians at home is a time-consuming process, requiring marginal care to detail and related professional skills. Only our company can implement a qualitative project with all your wishes.
Electricity supply of an apartment building
In order for the project of the power supply of the village, apartment building, cottage or other platform for many years, trust this thing to us.
For you, we will be happy to provide the following services:
- Error-free definition of the right location of sockets, switches, lighting devices;
- Drawing up an equipment layout plan;
- Carrying out equipment specifications;
The compilation of single-line electrical circuits for the project of the power supply of an apartment building or a small cottage can only possess solid experience master.
Electrical work Price PRICE -LIST 2016 Moscow
The price list for electrical work includes a whole range of works, including the maintenance of a project of any complexity "turnkey". The price list on electrical work in Moscow and other cities includes:
- Installation and dismantling of wiring;
- Pad cable;
- Connection to the general network;
- Laying television and internet cable;
- Installation of ventilation;
- Installation of electrical panel;
- Connecting lighting devices;
- Installation of insulated floors and others.
Our highly qualified wizards will come to you at any population and perform work even with the most complex tasks.
Our advantages in the work on the project of electricians at home:
With us you will forget about the problem of finding high-quality materials and a responsible contractor. The range of our distinguishing features includes provision:
- Only quality materials
- Verified tools
- Highly qualified professional masters
- Optional access to the point
- Installed democratic pricing policy.
Our turnkey services imply a comprehensive trip to the implementation of the projects of the population of the village, an apartment building, cottage or any other population.
Electrical work Prices list 2016
As part of the implementation of an individual approach, we carefully approach the compilation of the price list for each client separately, in which you will additionally receive:
- Preparation of the necessary documentation for state bodies;
- Connecting complex household appliances;
- Electronics setting;
- Testing the work of equipment and electronics;
- Quality guarantee for several years.
We best know that every project is strictly individual, each project of power supply to the village or country house separately, an apartment building or a separate room has its strengths and weaknesses, each designer solution in the house is unique.
Power supply project at home
In our power to check, install or disassembling any electricity supply scheme of apartment buildings, including:
- Multi-storey house with a transformer substation;
- Multi-storey house with two transformer substation cables;
- Multi-storey house with two cables transformer substation and ABR.
We make the electrician project accurately and promptly, calculating every detail and, if necessary, discussing it with you. Therefore, the cost of the project electricians at home you should not worry. After all, you will not only control our work, but also you can clearly designate the budget of the electrical wiring project, beyond which we will not go out.
Power supply\u003e Power supply concept
Power supply of residential buildings
For objects of new construction recommended, in particular, the TN-C-S system. It implies grounding of metal electrical equipment housings and connecting outlets with three-wire wires. Uzo in this case should protect the maximum number of lines and equipment.
When combining group lines for protection, one UZO should take into account the possibility of their simultaneous shutdown. In addition, in multistage schemes, it is necessary to perform the conditions of selectivity, that is, the disconnection functions with the delay in order to exclude the operation of the introductory RCO after group.
At modern facilities of individual construction (cottages, cottages, houses, etc.) requires the use of increased electrical safety measures. This is due to the high energy saturation, the branchedness of electrical networks and the specifics of operation of both the objects themselves and electrical equipment. When choosing a power supply scheme of the Type of Uzo and distribution panels, you should pay attention to the need to use overvoltage limiters (thunderstorm arresters), which should be installed before the UZO (after the introductory diff-automaton, in front of the meter). This is especially true to use in residential power houses with power lines.
In individual houses it is recommended to use the RCM with a rated current not exceeding 30 mA for group lines that feed bathrooms, showers and saunas, as well as plug sockets (inside the house, in cellars, built-in and attached garages). For lines providing an outer installation of plug sockets, the use of the RCD with a rated current not exceeding 30 mA, be sure to.
Power supply schemes for residential buildings.
Typical project of 17-storey residential buildings
EOM - power electrical equipment, electric power networks and electrical lighting of an apartment building.
This section of the project discusses power electrical equipment, electric power networks and electrical lighting of an apartment building.
The power supply of the main equipment according to the degree of reliability refers to the category II in accordance with the PUE classification and the requirements of the joint venture 31.110-2003 and is carried out in two cable I / 220V of the outer power supply of ~ 380 / 220V of the AC with a frequency of 50 Hz. Grounding system on hand type TN-S-S.
The electrical supply of the object is provided on the RU-0,4KV of the designed separately standing RTP.
The introductory-switching device is manpowdered by two interviewed cable lines of the APVZBBSP-1 2x (4x120) brand. The cables are laid in the trench, in the ground at a depth of 0.7m.
For the distribution of power supply to power electrical equipment, lamps of the main and emergency lighting project are provided for distributing electrical panels, pcs, ppn.
To carry out the power of electrical receivers of the I project category I, an automatic reserve entry is provided.
To electrical acceptors I, the category of power reliability category, according to SP 31.110-2003 Tab. 5.1, belong:
Reference lights;
Elevator equipment;
Emergency lighting;
CCTV;
Fire alert system;
Equipment dispatching system (ACS);
Security and communication systems;
Pumping stations;
Fireproof devices (subjunction and smoke systems, smoke removal valves, fire extinguishing systems);
The uninterruptible power source carries out autonomous power supply for at least 1 hour.
Power equipment.
The power supply network is performed by cables of the VVGNGLS 3x [S] brand, in PVC corrugated pipes on the ceiling, in the preparation of the floor and in metal trays, in the wall of the strokes and cable channels, in accordance with the technological plan for the placement of technological and other equipment.
If the fire occurs, it is planned to disconnect the exhaust air ventilation by disconnecting the B1 system distribution shield.
Power supply of the ventilation unit is produced by an independent line from the combustion shield B1. Control fans of smoke removal is carried out using the I5000 control boxes (or similar).
Passenger elevator control shield, comes complete with equipment.
The operation of pumps, is carried out from the control stations that are part of the pumping installations supplied complete with the equipment.
Managing the work of light-finishing lights (s) is carried out from the control board included in the installation supplied complete with the equipment.
Electricity of the net
The network of domestic and technological sockets is performed by the Vagngls 3x2.5 brand cable in PVC pipes with a diameter of 20 mm.
The sockets are installed on the wall in accordance with the high-altitude marks indicated on the plan.
Blue - zero working conductor (N);
Green - yellow - zero protective conductor (PE);
Black or other colors - phase conductor.
In accordance with clause 7.1.49 of the Pue, with a three-wire network, install plug sockets at a current of at least 10a with a protective contact that must have a protective device that automatically closes the sockets when the fork is removed.
The reinforcement connection of the RE conductor is not allowed (Pue 1.7.144).
PVC tube must have a fire safety certificate (NPB 246-97).
Electrical equipment and materials applied during installation must have a certificate of compliance with the RF standards.
Electric lighting
Electric lighting of the premises is performed in accordance with the SP 52.13330.2011 "Natural and Artificial Lighting".
Group networks of workers and evacuation lighting are performed by the VOGng-LS 3x1.5 brand cable, in PVC pipes on the ceiling.
Group networks of emergency lighting are performed by the Vggling-FRLS 3x1.5 brand cable, in PVC pipes on the ceiling.
The project provides for a combined lighting system and the following types of artificial lighting: working, emergency (reserve and evacuation) and repair. The voltage of the working and emergency lighting network is 220V, repair - 36B.
To accommodate automation and means of protecting the electrical displacement, the project provides for the installation of the shield of illumination and emergency lighting scho.
The project uses lamps with LED and fluorescent lamps.
The selection of lamps was produced in accordance with the purpose of the room and the characteristic of the medium, as well as in accordance with the terms of reference.
In public premises, emergency lighting lamps are used for duty lighting at night.
Switches and switches are installed on the wall from the door handle at an altitude of 1000 mm from the floor level.
The project provides manual (local) lighting control, as well as remote from the dispatching room. To save electrical energy, automatic lighting control is provided using motion sensors (on evacuation staircase) and presence sensors (elevator hall and corridor).
The project provides for the installation of a system of barrier lights (s) on the roof.
Electric shock protection
To ensure the safety of people, working documentation provides all types of protection required by GOST R 50571.1-93 (IEC 364-1-72, IEC 364-2-70) "electrical installations of buildings. Basic position." Protection against direct touch is provided with the use of wires and cables with double insulation, electrical equipment, devices and lamps with a degree of protection not lower than IP20.
All metal parts of electrical equipment, not normally under stress, metal structures for the installation of electrical equipment, metal pipes of wiring are subject to protective grounding in accordance with the requirements of PUE for networks with a deaf-free neutral n. 1.7.76 PUE ed. 7.
The protection against indirect touch is made automatically disconnecting the damaged section of the network of protection devices from superhowers and the performance of the potential equalization system. To protect against low closure currents, reducing the insulation level, as well as when the zero protective conductor is broken, a protective shutdown device (UZO) is used.
Accounting for electricity
Commercial electricity accounting is carried out on the border of the balance sheet in the village.
As sensors of input control of electricity, use three-phase electronic meters, transformer inclusion of Mercury type230 ART02-CN 5-10A, having a telemetry output to connect to the AUCEE (counter type of counter additionally with services).
System of lightning protection
Classification of an object.
The type of object is a multi-apartment apartment building. The height 45 m. The project is adopted by III category of lightning protection in accordance with from 153-34.21.122-2003.
III level of protection against direct lightning strikes (PUM) - reliability of protection against PUM 0.90. The complex of the projected means includes a protection device for direct lightning strikes (external lightning protection system - MZS) and devices for protection against secondary influences of lightning (internal MS).
External lightning protection system
As a lightning game, use a metal grid made of steel galvanized wire with a diameter of 8 mm (cross-section of 50 square meters). Use the fittings of Art. F8 GOST 5781-82. The grid is laying on the layer of insulation, over the roof screed. The cell is not more than 15x15m. Grid nodes connect welding. All metal structures located on the roof (ventilation devices, fire stairs, drain funnels, fence, etc.), connect with a weld with a weld with a rod 8 mm; The length of the welds is at least 60 mm. All protruding non-metallic designs also protect the wire, laid on top of the perimeter of the structure and combine with a lightning grid.
Clamps are located around the perimeter of the protected object. As a current, apply the steel galvanized lane 25x4. The location of the currents is presented on the plans. Clamps are connected by horizontal belts at +12.00, +27.00 and + 39.00m.
As a grounding person, the project is adopted by reinforced concrete foundation, connected by the welding of the steel strip 50x4 according to GOST 103-76. The grounding band of lightning protection is laid around the task, at a depth of at least 0.7 m from the surface of the Earth. Soil loam with a resistivity of 100 ohms * m. The length of the horizontal earthing d \u003d 115.6 m.
Estimated resistance to spreading current no more than R \u003d 4.0 OM;
System material - steel.
All connections to weld. Provide an anti-corrosion coating of all open elements of the lightning protection system. To protect the grounding contour from the soil corrosion, cover its elements of the Bituminous Mastics of the MBR-65 (GOST 15836-79), a thickness of no more than 0.5 mm.
Grounding grinding grounds to combine with GZSH at SER.
Protection against secondary influences of lightning.
To protect against high-capacity driving on external metal communications, they are necessary at the commissioning of communications to the building to connect the lightning protection system to the entrance. Compound Perform with steel strip with a cross section of 40x4 (GOST 103-76).
To protect people in the elevator mines from stepper stresses and tensions, which can arise on the floor and lifting equipment, in mines around said equipment to lay the contour. Contour from steel strip 40x4. Contour run on the horizon +12.00 +27.00 and + 39.00m. To equalize the potentials, metal parts of the framework of lifting mechanisms to connect with contours. Connect the protection circuit of elevators with GZSH.
All connections to weld.
Provide anti-corrosion coating of all elements of the lightning protection system. To protect the elements of the system from soil corrosion, cover its elements of the MBR-65 bitumen mastic (GOST 15836-79).
Indication on the installation of grounding of pipelines:
Grounding metal pipelines Perform on the entry from the side of the building in the locations available for service. All external metal pipelines connect with an artificial earthing system of external lightning protection system. To connect to use the steel strip 40x4.
For cast-iron sewage pipes, use clamping from steel 08x13. Clamps install on cleaned to metal. Brilliance pipe with subsequent processing of the connection site by technical vaseline.
Mounting nodes are performed in accordance with the instructions of the U-ET-06-89.
Transient connection resistance not more than 0.03 ohms per contact.
To coordinate with Mosvodokanal grounding of the water supply system in accordance with UDC 696.6,066356 P.542.2.1, P.542.2.5.
System of grounding and equalization of potentials.
As a re-earthing man, use the circuit of grounding of lightning protection.
As a tire of the GZSH to use the bus line.
External ground circuit connect with GZSH. To connect to use the steel strip of Article.50x4.
Connecting welding. For strip steel conductors, the length of the welds is 100 mm, the height is 4 mm. Connections with pipes Perform in accordance with the nodes given in the drawing or according to the requirements of the standard album of the 5.407-11 series ("grounding and reinforcing electrical installations). Places of external connections and external steel connecting conductors to paint the MBR-65 bitumen mastic.
Adjust the potential equalization according to the scheme (see page 41 and 40).
Conductors of the equalization of potentials that are not part of the cable are open open, with an attachment to the building structures using metal brackets. Distance between fasteners to determine when mounting. Packing through the walls to perform in sleeves with a diameter providing a free passage of the conductor. A hidden gasket is allowed in fire hazardous, hot, raw rooms.
The statement of the work drawings of the main kit of the brand of EOM:
- 1. General data
- 2. Scheme Electrical principled single-line input and distribution device
- 3. List of electrical consumers and the calculation of electrical loads
- 4. Typical nodes
- 5. Scheme Electrical Concept Single Camping Shield 1
- 6. Electrical scheme. Connection DC
- 7. Electrical scheme. Connectorship schsss scheme.
- 8. Scheme electric principal one-centenary shield of distribution schools2 and y5111
- 9. Scheme Electrical Concept Single Conducting Floor School Shield
- 10. Scheme Electrical Concept Single Captation Shield
- 11. Connection diagram of active electricity meters to current transformers
- 12. Scheme Electrical Concept Single Conducting Floor Floor AVR
- 13. Installation scheme. General view of AVR
- 14. Installation scheme. General view of Wurrm evacuation ladder
- 15. Scheme Electrical Lifting Control Lift Hall and Corridors
- 16. Group lighting network. Underground.
- 17. Group Lighting Network 1
- 18. Group lighting network 2 ... 17 floors
- 19. Power electrical equipment and group network lighting network
- 21. Power electrical equipment of those. Underground.
- 22. Power electrical equipment 1st floor
- 23. Power electrical equipment 2 ... 17 floors
- 24. Grounding and lightning protection of the building
- 26. Scheme of the main system of equalization of the building potentials
- 27. Plan of entering cables from a trench in the building of 0.4kV networks (cut)
- 28. Plan of entering cables from a trench to the building of the network 0.4kv
Electrical circuit diagram for monolayer distribution shield
Typical mounting nodes
Scheme Electrical Concept Single Cutting Shield Shchski2 and Ya5111
Connection Scheme of Active Electricity Counters to Current Transformers
General view of a floor distribution device (WERM)
Evacuation Staircase Lighting Control
Group lighting network. Plan those. Underground.
Grounding and lightning protection. Plan those. Underground.
Scheme of the main system for equalizing the potentials of the building
Grounding and lightning protection. Roof plan.
Plan of entering cables from trenches in the building of 0.4kv networks
Since the electric current represents a huge danger, the design and construction of multi-storey houses and industrial facilities should take place in compliance with all the requirements when installing electricians. Since all wiring of production and shopping buildings is paired by high-quality cables, it can only be performed by a qualified specialist. From the quality with which the design and performance was performed - not only the preservation of electrical appliances, which a large number has any apartment building, lighting, but also the lives of many people.
Wiring Installation Requirements
There are certain requirements that need to be observed when designing and electrical installation in a new building. They must be observed:
- During the installation of power cables.
- For the purpose of lighting and other chains, which have a voltage not higher than 1 kW of direct and alternating current and are made from the inside and outside objects in the installation wire, in which all sections are insulated, and more cables that do not have armor having plastic and rubber isolation up to 16 mm2 .
Laying unlarited cables, wires with protection and without protection Through non-flammable walls and overlaps. Through the walls and overlaps exposed to fire, the installation must be performed in the steel pipe. Outlets in the walls and purses in the floors in an apartment building are obliged to have a framing, which will prevent their destruction in the process of use. At points where the cable and wire pass through the walls, the ceilings, or goes outside, should not have holes of the cables, wires, boxes, openings and other designs. The gaps are easily close to the mixture, which has non-aggravated properties and is easily removed, in case of need. Close the gaps are needed on both sides of pipes, boxes and other things.
When the laying of metal pipes go outdoor, it is necessary to close the passage of the location through fire prevention obstacles after the electrical wiring in the new building was performed.
When an open laying of installation cables with a diameter is not higher than 4 mm 2, they can be fixed on the walls of the walls or plaster on the rollers. Brackets and hooks should be fixed only on the main material of the walls. When the rollers are fastened with muffluffs, under the heads of delay, the washers from metal and the elastic material should be placed if the rollers are attached to the metal - the washers should be elastic.
To ensure the reliability of the electromotion, the long and secure service life of the wiring, during installation it follows that:
- The open wiring is paved along the wall under the ceiling, directly on the ceiling, using the farm.
- The open electrical wiring of unprotected cables for construction grounds is paired by rollers and insulators, at an altitude of not lower than 2.5 m. You can reduce the distance to 2 m in places in which there is no enlarged danger, and when the voltage is 42 V in any room.
- In the production room, the supply to switches, starting machines, plug sockets protect against physical damage to a height of 1 meter from the floor level or the serving platform. For the household sector, residential, public buildings and electrical facilities of organizations, which have a commercial bias, all shutters electrician does not protect against physical impact.
- When placing wiring with the rest of the way, such as: in the pipe, box, cable, protected wire - there are no rates at the height of the gasket. The organization of their protection is made only where there is a high probability of mechanical damage, in particular, these are passages.
- In the open wires are laid in such a way that they are not very noticeable in the residential area over the rest. For this, if it is an apartment building, the wires are stacked at the level of the eaves, on the slope of the doors and windows.
- When crossing protected industrial and unprotected wires with water pipelines or heating, a distance should be observed at least 5 cm, with a hidden gasket. When the pipeline passes the flammable compositions - 10 cm and more. When it is not possible to comply with the required indent, it is required to provide additional posting protection against physical damage.
- During the laying of cables parallel to pipelines, it is required to keep a distance of at least 10 cm, and from the pipeline with a flammable composition - 400 and higher.
- The locations of the docks of the wires and their branching should be combined with welding, soldering, crimping in sleeves or using clamps in the branching boxes.
Competent design already includes all these requirements.
Electrical installation requirements in the production room
Since industrial electrical installation may include autonomous power supply devices, generators, high-voltage line laying, assembling transformer substation, etc., therefore, you should follow certain installation rules:
- In such buildings, in order for the electrical installation of industrial objects to be implemented in all the rules, it must be electrically equipped, which is equipped with a central switch.
- Power to illuminate each room should be separate.
- Each electrical appliance should have its own circuit breaker, in order to increase the overall safety of the production line.
- The cable wiring in the metal tube and special trays is considered a prerequisite condition.
- In any workshop, the installation of the grounding tire is required, and all machines must have grounding with a hard wire, which is connected to the bus.
- The work and maintenance of all electrical appliances should pass through all the standards of PUE, the rules of protection against static electricity and other things, including a lightning track. This should be taken into account when design is compiled.
Video about installation in a new building