Nowadays, floor panels are installed in literally every modern residential building. It is inside them that electricity is received and distributed, and current leaks to the ground are allowed (if a grounding system is provided). In addition, floor lines reliably protect apartment lines from overloads and short circuits (at a frequency of 50 Hz and alternating current of 380/220V).
The main reliability parameters of floor panels include the operational life (at least 25 years) and the mean time between failures (at least 9 thousand hours).
About floor panels
Structurally, the shield is a welded metal structure with a partition that forms three compartments:
- subscriber;
- distribution;
- low current
Each compartment has a door, and inspection windows are provided on the front side.
There are three types of shields:
- distribution - for connecting apartment registration and group panels;
- accounting and distribution – for connecting apartment group panels and apartment electricity metering;
- accounting-distribution-group – for connecting group circuits of apartments and apartment-by-apartment electricity metering.
Shields are classified according to the following criteria:
1. Design related to the type of installation
1.1. Wall mounted.
1.2. Built into a niche.
2. The presence of a low-current compartment
2.1. With compartment.
2.2. No compartment.
3. Method of protection against electric shock according to GOST 12.2.007.0-75
3.1. Class I.
3.2. Class II.
4. The presence of a device at the input panel
4.1. With the device.
4.2. Without a device.
5. Number of input phases into the panel
5.1. Single-phase with estimated power at the apartment input <=11 kW.
5.2. Three-phase with a calculated power at the apartment input >11 kW.
6. Number of phases of distribution circuits
6.1. Single-phase.
6.2. Three-phase.
7. Number of phases of group circuits
7.1. Single-phase with estimated power at the apartment input <=11 kW;
7.2. Three-phase with a calculated power at the apartment input >11 kW.
8. Availability of a device for protecting and disconnecting the supply circuit (riser)
8.1. With the device (or a designated place for its subsequent installation by the consumer);
8.2. Without a device.
9. Availability of instruments and devices for remote data acquisition and/or remote control and/or remote (automatic) control of power consumption mode
9.1. With instruments;
9.2. No instruments.
At the first stage, when installing floor panels and creating an installation diagram, it is necessary to adhere to the plan for the location of the circuit elements. This will help make the device compact and less expensive.
Create a schema
It is best to entrust it to an electrical engineer or a specialized organization
The unit of measurement is one module. The module is equal to the area occupied by a single-pole circuit breaker. The width of one module is 17.5 millimeters. This standard is international.
Floor boards ShchE
Floor board ShchE produced by MZEMI plant
The consumed electrical energy is taken into account, as is known, using the readings of an electric meter, which is placed on the apartment panel for the purpose of convenience and protection. In addition to the apartment panel, there is also a floor switchboard, the purpose of which is to unify reception and apartment distribution, and to account for electricity for residential high-rise buildings. Its functions also include protection in the event of a possible short circuit and overload of outgoing electrical lines.
For a city dweller, a floor-to-floor switchboard is a familiar electrical device, without which it is difficult today to imagine a system of floor-to-floor and apartment-to-apartment electricity distribution. For a standard switchgear, the normal electrical load is 220 volts. It has special departments in which various low-current networks are located. Another advantage is considered to be protection against electric shock.
It is customary to build the panel housing of a floor switchboard into a specially designated niche. Externally, the housing looks like a convenient, compact and aesthetically attractive panel, which is used to mount special devices in it that control high-voltage currents coming from a common high-voltage main line, and for their subsequent distribution throughout the intra-house network.
The design of the ShchE electrical panel consists of three compartments:
1. housing low-current devices and equipment (the compartment has perforated profiles, thanks to which radio and TV networks, security and fire alarm lines, telephone lines, intercom networks, lines of video surveillance systems networks, etc., are carried out, as well as branching/connection boxes for each of the listed systems);
2. distributing and controlling electricity (the compartment has DIN rails for mounting RCDs and circuit breakers, ensuring reliable protection of common lines at the level of each individual apartment). Maximum electrical safety of this compartment is ensured by a false panel (operational panel), which can only be dismantled (removed) by maintenance personnel using special tools;
3. inputting and accounting for electrical energy (it is equipped with panels for electric meters associated with the presence of apartments on the landing of a high-rise building - usually 2-4 panels. There is also a place to mount a circuit breaker needed to de-energize the central power line, if the need arises.
Preparation of tools
To properly connect modular equipment, you will need the following tools:
- Multimeter (tool for checking the functionality of the circuit before and after connection)
- Phillips and flathead screwdrivers (for working with screw connections)
- Knife or special tool (for stripping insulation)
- Set of pliers, round nose pliers
- Side cutters
- Hacksaw for metal
- Hammer
- Screwdriver with different attachments
Floor boards of ABC-Energy company
ABC-energy floor boards comply with the norms and standards of technical documentation. Advantages of ordering panel products from ABC-energy:
- High level of professionalism of the company's employees;
- modern production equipment;
- guarantee for manufactured products;
- mutually beneficial terms of cooperation.
ABC-energy has been manufacturing, assembling and installing electrical equipment for more than 6 years. The company's specialists have developed a large number of types and models of floor panels presented on the website. You can order floor panels for 2 apartments on the website https://abc-energy.ru/ Delivery and installation is carried out to all regions of Russia.
Installation of floor board
The installation of the electrical panel should be carried out by a specialized electrical installation organization. In some cases, it is possible to carry out work using an economic method, but at the same time it is necessary to allocate additional human and material resources.
Stages of installation of floor panels:
- Mounting the housing on a wall or in a prepared niche
- Installing Electrical Wiring into the Housing
- Wiring stripping
- Installation of mounting rail (DIN rail)
- Fastening all components to the tire
- Installation of ground and zero buses
- Cutting wires for jumpers
- Connection of installed equipment according to the diagram
- Inspection of the shield and visual quality control of connections
- Sealing and connecting the electricity meter in the presence of a regulatory organization
- Test run.
Table No. 1. Approximate list and cost of floor panel equipment for 4 apartments
№ | Name | Quantity, pcs. | PRICE, (₽) |
1 | Residual current switch (RCD) VD1-63S 2P 50A 300 mA (Electromechanical) | 4 | 2047 |
2 | Three-pole automatic switch 100A C VA47-100 C 10 kA | 1 | 1797 |
3 | Electricity meter CE102 R5.1 145-J single-phase multi-tariff 5(60) accuracy class 1.0 | 4 | 1416 |
4 | Single-pole automatic switch 20A C BA47-29 GENERICA 4.5 kA | 4 | 102 |
5 | PE earth bus on DIN insulators ShNI-6x9-10-D-Zh | 4 | 76 |
6 | Zero bus on DIN insulator ShNI-6x9-10-D-S | 4 | 72 |
7 | Single-pole automatic switch 16A C VA47-29 4.5 kA | 8 | 109 |
8 | Residual current switch (RCD) 2p 50A 30mA VD1-63 AS (Electromechanical) | 4 | 1277 |
9 | Four-apartment floor panel ShchE.4 IP31 metal UHL3 | 1 | 7214 |
Download the table in .pdf format:
List and cost of floor board equipment for 4 apartments
Application and features of floor panels
Devices of this type are necessary in order to perform several tasks at once:
- distribution and metering of three-phase alternating current electricity in networks with a solidly grounded neutral;
- providing protection to outgoing lines during short circuits and overloads;
- placement of low-current equipment;
- implementation of operational switching on/off.
These structures are installed in multi-apartment residential buildings, where they are located in a special niche on all floors. The introduction of power lines is carried out without cutting the main line. Doors are installed on the floor panel for 2 apartments, which are locked with a key. If the design does not provide a hole for a key, then a locking device is installed on them.
Inside the niche covered by the floor shield there is an operational panel with control devices. Thanks to the shield, they are reliably protected from unauthorized access to the live part.
The cost of devices varies depending on the configuration, manufacturer and a number of other factors.
Selecting a contracting company
When planning any work, people need cooperation with a company that they can trust to resolve issues that arise during the work.
When choosing a contractor company, you need to follow some rules.
1. Conclude an agreement
Companies operating legally must themselves offer to draw up an official document that confirms the existence of an agreement on the scope of work, delivery dates, cost, guarantee and other conditions. Having an agreement will help avoid protracted and complex resolution of problems that arise.
2. Study information about the timing of work in the market and the experience of the organization. Companies with extensive experience in the same field probably have a large portfolio, which means that you can safely trust this organization.
Information about completed work is posted on the official website, in the company’s office, and you can also communicate directly with the organization’s employees.
You can also check a company by TIN. Just enter the TIN number in the search engine.
Example from our organization: TIN: 18311693 82
3. Read customer reviews
It is important to remember that people can be mistaken in good faith or deliberately distort reality. Try to remain neutral and evaluate information objectively.
4. Prepare your costing/budget carefully
The estimate describes in detail the work that is expected to be performed, as well as their sequence. Based on the calculation/estimate, the final settlement between the customer and the contractor will be made.
5. Ask what guarantees the contractor is willing to provide
When a company provides a guarantee of work, it means that the contractor is confident in the quality of the result, and is also ready to eliminate defects that arise after completion of the work.
Warranty obligations protect the customer by providing a chance to legitimately contact the contractor in situations requiring the elimination of deficiencies. The legislation establishes that the period given to the client to exercise his rights is at least a year (from 12 months).
6. Cost of work
When considering company offers, consider the market price. The price conditions specified in the document must be clear and the cost fixed.
In this article, we briefly talked about the functional purpose, structure, types, classification, stages of installation and connection of the floor panel. An approximate list and cost of equipment for a floor panel for 4 apartments is given. Some rules are also highlighted when choosing a contractor company.
Construction of floor panels
As a rule, shield 2 has the following compartments:
- Subscriber compartment where circuit breakers are located, as well as devices that disconnect outgoing lines and inputs if necessary. Also, a false panel is usually provided here to protect live parts;
- Accounting compartment. There are several single-phase meters, terminal blocks, and a stair riser auto-switch located here. The zero bus is protected from accidental touches by electrically insulating cardboard. The doors have windows, which make it easier to take meter readings;
- The low-current compartment contains devices for telephone, television and other low-current networks. The compartment is located independently of the high-current part of the switchboard and has a separate door. With this arrangement, it is possible to shield radio devices, telephones, IP telephony, as well as television equipment.
Depending on the purpose, the panel for 2 meters is equipped with a device that serves to protect inputs and group lines. The meters themselves are mounted on a DIN rail.