Choice of category of power supply. Power supply reliability, power supply categories

Complain

Section 1 General Rules

Chapter 1.2. Power supply and electrical networks

Categories of electrical receivers and ensuring the reliability of power supply

1.2.17. The categories of power receivers in terms of power supply reliability are determined in the process of designing the power supply system on the basis of regulatory documentation, as well as the technological part of the project.

1.2.18. With regard to ensuring the reliability of power supply, power receivers are divided into the following three categories.

Power receivers of the first category - power receivers, the interruption of power supply of which can lead to a danger to people's lives, a threat to the security of the state, significant material damage, disruption of a complex technological process, disruption of the functioning of especially important elements of public utilities, communications and television.

From the composition of power receivers of the first category, a special group of power receivers stands out, the uninterrupted operation of which is necessary for an accident-free shutdown of production in order to prevent a threat to people's lives, explosions and fires.

Electrical receivers of the second category are electrical receivers, the interruption of power supply of which leads to massive undersupply of products, massive downtime of workers, mechanisms and industrial transport, disruption of the normal activities of a significant number of urban and rural residents.

Power receivers of the third category - all other power receivers that do not fall under the definitions of the first and second categories.

1.2.19. Power receivers of the first category in normal modes must be provided with electricity from two independent mutually redundant power sources, and a break in their power supply in the event of a power failure from one of the power sources can only be allowed for the period of automatic power restoration.

For the power supply of a special group of power receivers of the first category, additional power must be provided from a third independent mutually redundant power source.

As a third independent power source for a special group of power receivers and as a second independent power source for the remaining power receivers of the first category, local power plants, power plants of power systems (in particular, generator voltage buses), uninterruptible power units designed for these purposes, batteries and etc.

If it is impossible to ensure the continuity of the technological process by redundant power supply or if redundant power supply is not economically feasible, technological redundancy should be carried out, for example, by installing mutually redundant technological units, special devices for trouble-free shutdown of the technological process, operating in the event of a power failure.

Power supply of power receivers of the first category with a particularly complex continuous technological process that requires a long time to restore the normal mode, in the presence of feasibility studies, it is recommended to carry out from two independent mutually redundant power sources, to which additional requirements are imposed, determined by the characteristics of the technological process.

1.2.20. Power receivers of the second category in normal modes must be provided with electricity from two independent mutually redundant power sources.

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The reliability of power supply to urban consumers must comply with the EMP, according to which power receivers are divided into three categories.
When considering the reliability of power supply to household consumers, both individual power receivers and a group of power receivers are included in the relevant category. A group of electrical receivers is understood as their totality, characterized by the same requirements for the reliability of power supply (for example, electrical receivers of operating rooms, maternity wards, etc.). In some cases, consumers as a whole are considered as a group of electrical receivers (for example, a water pumping station, a children's institution, etc.). The requirements for the reliability of power supply to individual electrical receivers of the highest category cannot be extended to all other electrical receivers of consumers.
The requirements for the reliability of power supply are determined in relation to the input device of the power receiver or the input device of the group of power receivers (consumer).
When designing urban electrical networks, it should be borne in mind that urban consumers do not include electrical receivers, which, according to the PUE, belong to a special group of category I electrical receivers.
Below is a list of power receivers belonging to I, II and III categories of power supply reliability. This list contains power receivers of the main consumers and does not apply to power receivers of unique buildings and structures (largest theaters, circuses, concert halls, sports palaces, etc.), as well as power receivers of buildings of central government agencies and especially important civil defense facilities, the power supply of which can be decided according to local conditions.
Category I includes power receivers, the interruption of power supply of which can lead to a danger to people's lives and disruption of the functioning of especially important elements of the urban economy. These include:
a) electrical receivers of medical institutions, on the uninterrupted operation of which the life of the patient depends (operating rooms, maternity wards, departments of anesthesiology and resuscitation, laparoscopy and bronchoscopy rooms);
b) electric motors and other electrical receivers of fire-fighting devices in hospitals and dispensaries for adults or their separate buildings with a capacity of more than 400 beds (for children more than 250 beds), in polyclinics with more than 600 visits per shift;
c) category I boiler houses, which are the only heat source of the heat supply system, supplying category I consumers who do not have individual backup heat sources;
d) electric motors of network and make-up pumps of category II boiler houses with hot water boilers with a unit capacity of more than 10 Gcal/h;
e) water pumping stations in cities with a population of more than 50 thousand people, sewage pumping stations that do not have an emergency outlet or with an emergency outlet with an agreed discharge duration of less than 2 hours; pumping artesian wells operating on a common water supply network belong to category III;
f) electric motors and other electrical receivers of fire-fighting devices, elevators, evacuation and emergency lighting, network fence lights in residential buildings and dormitories with a height of 17 floors or more;

g) electric motors and other electrical receivers of fire-fighting devices, elevators, burglar alarms of public buildings and hotels with a height of 17 floors or more, hotels with more than 1000 beds and institutions with more than 2000 employees. regardless of the number of storeys, institutions of financing, lending and state insurance of union and republican subordination; libraries, book chambers and archives with 100,000 items or more;
h) museums and exhibitions of national importance;
i) electrical receivers of fire-fighting devices and burglar alarms of museums and exhibitions of republican, regional and regional significance;
j) electric motors and other electrical receivers of fire-fighting devices of general education schools, vocational schools, secondary specialized and higher educational institutions with more than 1000 students; h
k) electric motors of fire pumps and other electric receivers of fire-fighting devices, evacuation and emergency lighting of indoor entertainment and sports facilities for more than 800 seats;
m) electric motors and other electric receivers of fire-fighting devices and burglar alarms of shops with a trading area of ​​more than 2000 m 2, as well as canteens, cafes and restaurants with more than 500 seats;
m) traction substations of the system of centralized power supply of urban electric transport; traction substations of the decentralized power supply system belong to category III;
o) computers of computer centers that solve a complex of national economic problems and the tasks of managing individual industries, as well as serving technological processes, the main electrical receivers of which belong to category I;
o) the central control room of the city electrical network, heating network, gas supply network, water supply and sewerage system and outdoor lighting network;
p) points of centralized protection (CCP);
c) central heating substations (CHPs) serving buildings with a height of 17 floors or more;
r) city CPUs (RP) with a total load of more than 10,000 kVA.
All other electrical receivers listed in paragraphs. "b", "d", "e", "g", "k", "l", "m", "o" consumers belong to category II.
Category II electrical receivers include electrical receivers, a break in the power supply of which leads to a disruption in the normal activity of a significant number of urban residents. They include:
a) residential buildings with electric stoves, with the exception of one-eight apartment buildings;
b) residential buildings with a height of 6 floors or more with gas or solid fuel stoves;
c) hostels for 50 people. and more;
d) buildings of institutions with the number of employees 50 - 2000 people;
e) children's institutions;
f) medical institutions, pharmacies;
g) indoor entertainment and sports enterprises with the number of seats in the hall 300-800;
h) outdoor sports facilities with artificial lighting in the presence of 20 rows or more;
i) catering establishments with 100 - 500 seats;
j) stores with a sales area of ​​250-2000 m 2 ;
k) urban transport service enterprises; m) baths;
m) consumer service complexes, household blocks and ateliers with more than 50 jobs, hairdressing salons with 10 or more jobs;
n) dry-cleaners and laundries (with a capacity of 400 kg of linen per shift or more);
o) water pumping stations in cities and towns with a population of 500 - 50 thousand people, sewer pumping stations with emergency discharge with an agreed discharge duration of less than one day, as well as water treatment and sewerage facilities;
p) educational institutions with 200-1000 students;
c) museums and exhibitions of local importance; r) hotels with 200-1000 beds;
s) libraries, book chambers and archives with a fund of 100,000-1,000,000 items;
t) computers of computing centers, departments and laboratories, except for those indicated above;
u) TsTP in microdistricts, except for those mentioned above;
v) dispatching centers of residential areas and microdistricts;
w) lighting installations for urban transport and pedestrian tunnels, lighting installations for category A streets, roads and squares in the capitals of the Union republics, in hero cities, port and major cities;
x) urban central heating centers (RP) and transformer substations with a total load of 400-10000 kV A in the absence of category I electrical receivers.
Category III electrical receivers include all other electrical receivers that do not fit the definition of categories I and II.
Electric receivers of category I provide electricity from two independent power sources, and a break in their power supply can only be allowed during the automatic input of backup power. Independent power sources are two sections or bus systems of one or two power plants and substations, subject to the requirements of § 1.2.10 PUE. As a second independent source, they can also use autonomous power sources (batteries, diesel power plants, etc.) and backup connections over a 0.4 kV network from the nearest transformer substations powered by a 10 (6) -20 kV network from another independent source.
The automatic transfer switch (ATS) is provided, as a rule, directly at the input to category I electrical receivers.
Category II electrical receivers are recommended to be supplied with electricity from two independent power sources. For these electrical receivers, interruptions in the power supply are allowed for the time necessary to turn on the backup power by the actions of the on-duty personnel or the mobile operational team.
When determining reserve elements in the power supply system of power receivers of category II, the admissibility of their power supply via overhead lines with a voltage of 0.4 - 20 kV is taken into account, if the possibility of carrying out emergency repair of the line for a period of not more than one day is devalued.
They allow the power supply of electrical receivers of category 11 through one cable line, consisting of at least two cables connected to a common device. The power supply of electrical receivers of category II, as a rule, is provided from single-transformer transformer substations, provided that a centralized reserve of transformers is organized and that it is possible to replace a damaged transformer in no more than one day.
For electrical receivers of category II, redundancy in the post-emergency mode is allowed by arranging temporary connections with a voltage of 0.4 kV with a hose wire.
Category III power receivers can be powered from one power source. Breaks in power supply are allowed for the time necessary to supply temporary power, repair or replace a damaged element of the power supply system, but not more than for one day.
In the absence of two independent power sources in the city (district), settlement, temporary power supply listed in paragraphs is allowed until the second power source appears. "b", "e" - "o", "r", "t" consumers of category I and consumers of category II from one power source.
The temporary absence of redundancy in an element of the power supply system does not exempt from fulfilling the requirements for redundancy in the remaining elements of the system, taking into account the requirements for reliability depending on the categories of power receivers.

The power supply reliability categories of the PUE in the Russian Federation in 2020 are used to guarantee the safety of the Russian population in the process of using electrical installations.

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As early as the middle of the last century, rules for electrical installations (abbreviated as PES) were developed. Since that period, the rules have been subject to repeated amendments and adjustments.

The main goal of the document remains unchanged - to guarantee the safety of the urban population who actively use electrical installations.

What you need to know

Before studying the main issue, it is initially recommended to familiarize yourself with the basic theoretical information and regulations.

This will significantly minimize the risks of various kinds of misunderstandings.

Required terms

Key requirements that are directly related to power consumers are reflected in the EMP.

Unfortunately, some of the nuances of the specified requirement are not displayed in full.

It is necessary to start with the fact that PES provides for categories of reliability of power supply. At the same time, only for 3 categories they are described with relative specificity.

Based on this, for the 3rd category of power supply, the following requirements were established:

For consumers of the first 2 categories, shutdown periods are set:

It is necessary to pay attention to the fact that Russian legislation also establishes liability for electricity suppliers for their actions or vice versa, inaction, due to which losses or damage were incurred.

In order to be eligible for compensation, several basic conditions must be met:

1. Draw up an act regarding technological or emergency armor.
2. Draw up and submit to the judicial authority in order to recover damages.

It must be remembered that it will be easier to obtain compensation if the contract for the supply of electricity includes a section on the disruption of supply. In other words, mutual will be provided.

How many of them are allocated by the rules of the EU device

• first;
• second;
• third.

For each individual category of power receivers in terms of power supply reliability, the PUE include its own features, which are extremely important to know about.

Normative base

It is considered to be the main regulatory legal document (together with the Electrical Installation Rules, 7 Edition, 1 section “General Rules”).

It contains all the necessary information, as well as all sorts of nuances on the issue under consideration.

Categories of power supply reliability according to PUE

Depending on which category of reliability we are talking about, it is necessary to pay attention to some important features. Let's consider them in more detail.

First

Consumers of the first category of reliability of power supply are considered to be power receivers, interruptions in the supply of which can lead to:

• direct threat to the lives of citizens:
• danger to the state itself;
• significant material damage;
• the so-called disorder of a complex technological process;
• violation in the activities of key elements of the public utilities sector;
• various objects of communication and television.

Directly for consumers from the first category of power supply reliability, it is necessary to ensure the supply of electricity from several power sources. Such sources must necessarily be independent.

A similar scheme is used to reduce the risks of a forced emergency power outage for power consumers from the 1st category of reliability.

In the event of an emergency on one of the special power sources, the power supply to consumers will occur through the second channel (meaning the second input).

Moreover, for power receivers from the 1st category of reliability, it is allowed the possibility of stopping the supply of electricity only for a time that does not exceed the automatic option of switching to the supply of end consumers via the second input (via the second power source).

In addition, among consumers of the first category of reliability, it is customary to single out a special category.

Electrical receivers of a special group from the 1st category are usually characterized by the fact that their uninterrupted supply is needed for:

• accident-free shutdown of production activities;
• prevention of fire situations;
• prevention of other emergencies.

It is necessary to pay attention to the fact that the power supply of a special group from the first reliability category should be from a third independent input channel (third power source), which may well be a diesel generator with batteries connected to it.

In the event of a possible lack of backup power for a special group of electrical receivers, it is possible to use the so-called technological redundancy and stage-by-stage stop of the production process.

Second

Based on the adopted Rules of the EU, it is customary to include only those power receivers in the second category of reliability of supplying electricity to consumers, interruptions in the operation of which can lead to a significant decrease in the supply of products manufactured by the consumer, which happened due to:

• unemployment of a wage earner;
• simple production equipment.
• and even the so-called lack of normal life for most of the citizens.

In particular, outdoor lighting also belongs to the second category. Similarly, as for the first category of reliability, the second one necessarily requires redundant power supplies.

In other words, the power supply of electrical receivers of the second category of reliability must be carried out without fail from several independent power sources.

In the event of a disruption in the supply of electricity from one power channel, the possibility of a temporary absence of electricity for the period of the process of switching to a backup source by an operational staff of specialists or a team of workers on duty is allowed. For example, if the automation is out of order.

Third

In particular, the third category of reliability includes:

• the shops;
• small production facilities;
• office buildings;
• other.

The period for which it is allowed to stop the supply of electricity for the time of switching category 3 - no more than a day in a row or up to 72 hours in total for a calendar year.

It is necessary to pay attention to the fact that all consumers without exception from the third category of reliability have the legal right to move to the 2nd or 1st group as needed.

Video: power supply

At the same time, for the transition, it is necessary to form an application for the so-called technological connection, which displays plans for adjusting the reliability category.

In addition, in such a situation, it becomes necessary to pay for technological connection at the expense of the grid organization as for a new connection to the electrical system to the closest free power channel for the third category.

What to do when changing a category

According to the adopted Rules for the technological connection of end-user power-receiving equipment to electrical systems, approved, the reliability category of consumers' electrical receivers is established during the period of technological connection of equipment to electrical systems.

At the same time, consumers have the legal right to independently choose for themselves the necessary category of reliability of electricity supply.

In particular:

“Technological connection of the energy receiving device in order to ensure their reliable supply and quality of energy can be carried out according to one of the accepted reliability categories.The assignment of the power receiving equipment of a potential applicant (end consumer of electricity) to a specific category of reliability can be carried out by the consumer himself.The possible assignment of power receiving equipment to the first category of reliability is carried out directly if there is a need for a continuous operating mode of the power receiving device. Moreover, a possible interruption of the electrical supply can entail not only a threat to the lives of surrounding citizens and the state itself, but also significant material damage.”

In addition, it is necessary to pay attention to the fact that in the process of choosing the first or second category of reliability, the cost of connecting electricity increases approximately several times in relation to connection according to the 3rd category of reliability.

This is due to the fact that the supply of electricity in the first or second group must have several independent power sources available. The actual connection to each of them will be identical in price.

After the need arises to change the reliability category, it is necessary to follow the generally accepted mechanism of action, namely:

There is a PUE (rules for the installation of electrical installations), where you can determine the classification of electrical consumers and get acquainted with their conditional division in terms of reliability. If we consider a multi-storey building and a hospital, then the reliability of the second should be higher. Since resuscitation and operating rooms are connected to the power supply here, therefore, an emergency shutdown can lead to the loss of human life or its threat.

If we consider a chemical enterprise, then a power outage will result in an explosion, casualties and material damage, hence this facility is important and requires a reliable power supply.

All objects are carefully studied, and they are assigned categories of reliability.

• First. This group is also called very important. Since here the lack of power leads to irreversible processes, and, most importantly, creates a danger to human life, the state, and an emergency situation can be created that will result in great material damage. Therefore, an uninterruptible power supply from two independent sources is turned on here, when automatic switching from one bus to another is carried out in a matter of fractions of a second. Also in the first group, in order to increase reliability, a third source is provided, for example, batteries, autonomous mini-power plants, etc. This source is intended for a special group. They can also feed the second energy carrier.
• Second. An emergency power off can lead to mass marriage, disruption of the technical process, and people's livelihoods. It also uses two independent and interchangeable sources. This group is used by a significant number of electrical consumers.
• Third. Those consumers that are not included in the first two categories belong to group 3. It uses one source of power supply, only a prerequisite is to stop the power supply for no more than one day. The source can be one transformer transformer substation and 72 hours of outages are allowed in one year.

Power supply requirements

Electrical receivers of each category, according to the installation rules, have certain requirements.

• In the 1st group of electrical receivers power must be connected from independent power supplies. And if we are talking about a special group of receivers, then a third independent mutually redundant electrical unit is additionally provided. Thus, an uninterrupted and reliable power supply is ensured. Since power failures can lead to human casualties, property damage, violation of the technical process, TV failure, etc.
• In the second group of electrical receivers also comes from two independent sources. The only difference is that here a certain amount of time is allowed for connecting a backup source, while in the first category, switching is carried out automatically. Backup power can be connected by a mobile operational team or on-duty personnel. A power interruption in this group can lead to downtime for workers and electrical equipment, and stop production.
• In power receivers of the third group food is provided by one source and the break in food cannot be more than 24 hours.

Reliability categories of building/facility power supply

• A residential building, where there is a presence of electric stoves, belongs to group 2.
• The house in which there are 8 apartments and electric stoves is the 3rd group.
• Garden plots - 3.
• A room with fire fighting equipment - 1.
• Hostel where more than 50 people live - 2. Less than 50-3.
• Individual heating point and central heating point - 1.
• Buildings where more than 2 thousand people work - 1.
• High-rise buildings over 16 floors - 1.
• Sanatorium buildings and rest houses - 1.
• State insurance and financial institutions with security alarms and fire-fighting devices - 1.
• Libraries with security equipment - 1.
• Libraries where one thousand copies of books are stored - 2.
• Preservation of copies of books up to 100 units - 3.
• Preschool and school institutions with security equipment - 1.
• Hotels with security and fire-fighting equipment - 1.
• Canteens, cafes and other places for eating - 1.
• Consumer service buildings (hairdressing salons with more than 15 people, ateliers with 50 people and dry cleaners with a capacity of 500 kg) - 2.
• Museums of federal, regional and republican significance - 1.
• Medical buildings with intensive care, an operating room, a ward for premature babies - 1.
• Temporary objects - 3.

A building that has a 3rd group and is powered by one line, security and fire equipment should be connected to autonomous sources.

Power consumers and lighting are connected from transformers.

Transformer substations are used for public buildings built-in or attached.

A residential building can be powered from attached substations only if they are filled with a liquid dielectric.

The use of TP in a residential building and a school institution is prohibited.

TP should be placed in such a way that there is a possibility of round-the-clock access for organizations and personnel involved in maintenance.

Schemes (description)

A prerequisite for the receivers of the first group are independent power sources. And in the event of a power failure, it is automatically restored from the backup power supply. Electricity of independent sources is carried out from different substations or from one. In this case, certain conditions must be met:

• Buses or sections are connected from independent sources;
• There should be no connection between busbars or sections. Shutdown occurs automatically in an emergency.

Batteries, uninterruptible power supplies, local power plants can serve as a backup power source.

Fig.1

Figure 1 shows a radial diagram of category 1 consumers. During an emergency power outage on one of the sections, the circuit breaker on the bus will automatically close.

Fig.2

The second scheme in Fig. 2 displays consumers of the 2nd category. Can also be used for 1 group.

An emergency power off on one of the sections will not prevent the continuation of the second section.

Fig.3

Figure 3 shows a diagram of category 3 consumers. Using an emergency source, the scheme can be used for category 1 consumers.

Who determines and how

The criteria for choosing categories in the power supply are the number of people. First of all, their safety and the level of material damage are considered if a power outage occurs. For such purposes, designers have developed a classifier of various types of power supply. It indicates the types of buildings, objects, you just need to select the desired building with a certain category.

In industrial buildings, in order to determine the desired power supply group, technologists are involved and document SP 31-110-2003 and PUE (rules for electrical installations) are used.

It all depends on the danger and possible material damage. The lower it is, therefore, the category will be lower and vice versa. For example, an object associated with a fire is always assigned the first category.

What is the power supply reliability category?

Categories of electrical receivers and ensuring the reliability of power supply

1.2.17. Categories of power receivers in terms of power supply reliability are determined in the process of power supply on the basis of regulatory documentation, as well as the technological part of the project.
1.2.18. With regard to ensuring the reliability of power supply, power receivers are divided into the following three power supply categories.
Electric receivers of the first category- power receivers, the interruption of the power supply of which can lead to a danger to human life, a threat to the security of the state, significant material damage, disruption of a complex technological process, disruption of the functioning of especially important elements of public utilities, communications and television facilities.
From the composition of electrical receivers of the first category stands out special group of electrical receivers, the uninterrupted operation of which is necessary for an accident-free shutdown of production in order to prevent a threat to human life, explosions and fires.
Electrical receivers of the second category- electrical receivers, the interruption of power supply of which leads to a massive undersupply of products, massive downtime of workers, mechanisms and industrial transport, disruption of the normal activities of a significant number of urban and rural residents.
Electrical receivers of the third category- all other electrical receivers that do not fall under the definitions of the first and second categories.
1.2.19. Electric receivers of the first category in normal modes, they must be provided with electricity from two independent mutually redundant power sources, and interruption of their power supply in the event of a power failure from one of the power sources can be allowed only for the period of automatic restoration of power.
For power supply of a special group of power receivers of the first category additional power supply from a third independent mutually redundant power source should be provided.
As a third independent power source for a special group of power receivers and as a second independent power source for the remaining power receivers of the first category, local power plants, power plants of power systems (in particular, generator voltage buses), uninterruptible power units designed for these purposes, batteries and etc.
If it is impossible to ensure the continuity of the technological process by redundant power supply or if redundant power supply is not economically feasible, technological redundancy should be carried out, for example, by installing mutually redundant technological units, special devices for trouble-free shutdown of the technological process, operating in the event of a power failure.
Power supply of power receivers of the first category with a particularly complex continuous technological process that requires a long time to restore the normal mode, in the presence of feasibility studies, it is recommended to carry out from two independent mutually redundant power sources, to which additional requirements are imposed, determined by the characteristics of the technological process.
1.2.20. Electrical receivers of the second category in normal modes, they must be supplied with electricity from two independent mutually redundant power sources.
For power receivers of the second category, in the event of a power failure from one of the power sources, power supply interruptions are permissible for the time necessary to turn on the backup power by the actions of the duty personnel or the mobile operational team.
1.2.21. For electrical receivers of the third category power supply can be carried out from one power source, provided that power supply interruptions necessary for repair or replacement of a damaged element of the power supply system do not exceed 1 day.

Power supply reliability category extract from SP 31-110-2003

The degree of ensuring the reliability of power supply to electrical receivers of residential and public buildings is reflected in Table 5.1.

Buildings and constructions	The degree of ensuring the reliability of power supply
Residential buildings:
fire-fighting devices (fire pumps, air pressurization, smoke extraction, fire alarm and fire warning systems), elevators, emergency lighting, light railing lights
residential buildings with electric stoves (except for 1 - 8 apartment buildings)
houses 1 - 8-apartment with electric stoves
houses of St. 5 floors with gas and solid fuel stoves
houses up to 5 floors with gas and solid fuel stoves
in the areas of horticultural associations
Dormitories with a total capacity, people:
Separate and built-in central heating points (CHP), individual heating points (ITP) of apartment buildings
Buildings of management institutions, design and engineering organizations, research institutes:
The complex of other electrical receivers:
buildings with the number of working St. 2000 people regardless of the number of storeys, buildings with a height of more than 16 floors, as well as buildings of institutions of regional, city and district significance with the number of employees of St. 50 people
buildings with the number of working St. 50 people, as well as buildings of regional, city and district significance up to 50 people.
buildings with up to 50 employees.
Buildings of medical institutions 1:
electrical receivers in operating rooms and maternity units, departments of anesthesiology, resuscitation and intensive care, laparoscopy, bronchoscopy and angiography rooms, fire-fighting devices and burglar alarms, evacuation lighting and hospital elevators
complex of other electrical receivers
Financing, lending and state insurance institutions:
federal and republican subordination:
electrical receivers for fire-fighting devices, burglar alarms, elevators
complex of other electrical receivers
a complex of electrical receivers of institutions of regional, regional, city and district subordination
Libraries and archives:
electrical receivers of fire-fighting devices, burglar alarms of buildings with a fund of St. 1000 thousand units storage
complex of other electrical receivers
a complex of electrical receivers of buildings with a fund, thousand units storage:
St. 100 to 1000
Institutions of education, upbringing and training of personnel:
complex of other electrical receivers
Trade enterprises 2:
electrical receivers for fire-fighting devices and security alarms, elevators for supermarkets, shopping centers and shops
complex of other electrical receivers
Catering establishments 2:
electrical receivers of fire-fighting devices and burglar alarms
complex of other electrical receivers
Consumer service enterprises:
a complex of electrical receivers for hairdressing salons with the number of jobs St. 15, ateliers and consumer service complexes with the number of jobs St. 50, laundries and dry cleaners with a performance of St. 500 kg of linen per shift, baths with St. 100
the same, hairdressing salons with up to 15 jobs, ateliers and consumer service complexes with up to 50 jobs, laundries and dry cleaners with a capacity of up to 500 kg of linen per shift, shoe repair shops, metal products, watches, photo studios, baths and saunas with the number seats up to 100
Hotels, rest houses, boarding houses and camp sites:
electrical receivers for fire-fighting devices, burglar alarms and elevators
complex of other electrical receivers
Museums and exhibitions:
complex of electrical receivers of museums and exhibitions of federal significance
museums and exhibitions of republican, regional and regional significance:
electrical receivers of fire-fighting devices, burglar alarms
complex of other electrical receivers
a complex of electrical receivers of museums and exhibitions of local importance and local history museums
Conference halls and assembly halls, including those with stationary film projection installations and stages in all types of public buildings, except for those permanently used for paid entertainment events
1 A third independent source may be required for electrical receivers in certain medical settings, such as operating theaters, intensive care (intensive care) rooms, and premature infant wards. The need for a third independent source is determined by the design task, depending on the type of medical equipment used. 2 For temporary structures carried out in accordance with 7.12 PUE, as well as built-in premises up to 100 m 2 - III category of power supply. Notes 1 Power supply circuits for fire-fighting devices and elevators intended for the transportation of fire departments must be carried out in accordance with the requirements of 7.8 - 7.10 of this Code of Rules, regardless of their reliability category. 2 The complex of electrical receivers of residential buildings includes electrical receivers of apartments, lighting of common premises, elevators, utility pumps, etc. The complex of electrical receivers of public buildings includes all electrical devices that equip a building or a group of premises.