Main switchboard

The main switchboard (rchit) is a switchgear that is responsible for receiving and the further distribution of energy in the building. Great shields can also be connected to networks with a deaf-free neutral ground type:

• TN-C;
• TN-S;
• TN-C-S.

Main switchboard

It can also be used to protect lines from overload, current leakage and short circuits. The device may contain anti-emergency automation, as well as electricity metering. To purchase high-quality shield equipment, follow the link Elektrika.ru. Low prices and high-quality equipment are expected in this store.

Design

The shield design must include the following parts: input, sectional, linear panels. In the water panel, introductory automata that are responsible for receiving electricity from transformers and other metering devices will be installed. In the section panel, experts usually install a circuit breaker that allows you to power several sections of one input. Also here can place ABR. This device is used for backup power supply.

Automatic input reserve

The grip circuit may be diverse, as it depends on the number of incoming and outgoing lines. Most shields may have a circuit for two inputs and two outputs. When using this scheme, the input will be carried out from 2 transformers, and the output goes through the section panel to the distribution tires. To the main advantage of grebs, many electricians refer to the fact that all sections are collapsible.

The main characteristics for which you need to pay attention during the acquisition include:

1. Nominal points of introductory and exhaust lines.
2. Rated network voltage.
3. Grounding system.
4. The degree of protection according to GOST.

Article on the topic: Metric for newborn cross-strokes Schemes: download free child, Boy Boy and Girls, Date

Each distribution shield can be equipped with the following accounting devices:

• automatic switches;
• control and measuring devices;
• accounting devices;
• load switches;
• Automatic introduction of reserve.

If you set the right devices in the rchit, then it can be replaced with it with hand. The main difference between rchitis from the village is the strength of the maximum input current.

Circuit breakers in the city

Marking of electrical panels

Wires of all internal chains must necessarily have a color marking. It must necessarily have a sharp contrast and be resistant to abrasion. Clamps for PE and N conductors who depart from distribution and group chains should be marked with sequence numbers. If the joining of the wires to the terminals of the devices is difficult, then it is necessary to provide intermediate clamps. Clips should also be marked with sequence numbers.

From the outside of the Greg on the door it is necessary to post a sign with information. Typically, the nameplate contains the following data:

1. The name of the manufacturer.
2. Designation of type.
3. Degree of protection of the device.
4. Rated current lying.
5. Weight.
6. Designation of all technical conditions.
7. Date manufacturer.
8. Additional Information.

Marking in the city

Montaja technology

Greach food today is carried out through the main busbar and produced with a low side of the transformer. Also, the electrical installation should be remembered that the feeding of the Greg sections should be carried out mutually reserved lines.

Before installing, you must first place the circuit breakers on the mounting panel. Then it is necessary to adjust the placement of copper tires in the bus holders of the machine. The easiest way to perform equipment is installed when the rchit is located on the table. All elements of automatic input must be placed on a din rail. When the powerful circuit breakers arrange, they should be placed in each other. Thanks to this placement, the volume of maintenance of tires will significantly decrease.

Montage scheme

PE and N tires are usually installed on insulators and further fasten over the entire length. In the future, holes are made in them for the disclosure of cable lines. To exclude the possibility of further damage to the current, plastons are installed, which are made of non-combustible material. If it is interesting to read about the distribution panel assembly scheme.

Article on the topic: Weave the rug with your own hands: 3 ways - from threads, braids and pompons

Safety requirement when making mounting

General Requirements for labor protection

• Only persons who were 18 years old are allowed to work in the distribution panel. Also before working in the city, they must pass a medical examination, introductory instruction, primary briefing, as well as training and internship. The electrical safety level should be not lower than 3 groups.
• The work of the specialist must be defined by a working or job description.
• It is necessary to perform the rules of the internal labor regulation.
• It is necessary to apply individual or collective protection tools.
• If a situation occurs, which threatens people's lives, you must inform your higher-level leader. A specialist who works with a shield must undergo a regular medical examination.
• During work in the closet, the actions of hazardous or harmful production factors are possible.
• An employee must provide special clothing, shoes and other personal protective equipment.
• As a result of injury, work should be urgently terminated and report this to the manager.

Requirements before work

• You should choose the necessary tool to start performing work. Tools need to visually inspect and make sure.
• Jump special clothes.
• Before working, inspect your workplace.

Emergency Requirements

• In the event of faulty equipment, the employee must prevent his superiors about it.
• When the smell of gas is found, it is necessary to stop urgently.
• Gas elimination work must perform professionals.
• Upon receipt of injury, work should be discontinued and contact the medical institution.
• If an accident occurred, then the victim need to provide first aid.

Requirements during work

• Before the start of the work, the employee must be convinced of the absence of foreign stress.
• Warning signs should be applied on the outdoor side of the inner door.
• The introductory opening, which is located in the closet should be hermetically closed.
• Before using a soldering lamp, make sure that there is no gas in the closet well.
• Smoking in the distribution cabinet during the work is prohibited.

Article on the topic: Flizelin wallpaper Painting: Flashing technology and painting

Requirements at the end of work

• The workplace should be put in order.
• Close the cabinet.
• Collect all the tools.
• Notify the management of all the shortcomings that found in the shield.

Plates for grachics

conclusions

As you can see, the main distribution shield is a central point where electrical energy from sources will flow. Groze is most often performed in the form of a panel with mounted start-up, as well as adjusting reinforcement. The starting reinforcement includes:

1. Reostats;
2. regulators;
3. protective reinforcement;
4. automata;
5. circuit breakers;
6. relay;
7. Signal devices.

Each type of rchitch can be equipped with different devices. Their choice depends on the further purpose of the main distribution shield. We hope that this information was useful and interesting.

Distribution shield.