Residential building design: elevations, sections, schedules

Source Data

The project of electricity supply of the land plot Zorinets A.A., at 188255, Leningrad Region, Luga District, Tolmachevskoye GP, d.Zheltsy, st. Socialist made on the basis of:

design tasks;

attachments (specifications) No. 036/1270027 04.07.2012 .

architectural and construction documentation;

existing rules and regulations.

Key Project Indicators

Power supply voltage 380V.

The type of grounding system is TNCS.

Demand load 15.0kW,

Design cos f = 0.944, tg f = 0.35

Category of power supply reliability - III.

Street.

Outdoor networks

The project provides for:

Power supply of the land area shall be performed by KL0.4kV with 5x10 mm2 VVG cable, length of 10 meters in the form of descent along the existing support No. 5 of the existing VL 0, 4kV from TP No. 939 f.1 with entry from the bottom into the BRU board. (see sheet No. 3). Cable section is selected by permissible current load, checked by permissible voltage loss, checked for permissible voltage deviation at the consumer.

Grounding and safety precautions

There are no fire hazardous and explosive areas and rooms.

In the existing building, steel pipelines are combined with GZSH.

To ensure safety during operation of electrical installation in the design

power supply of electric receivers from 400V mains with system type is provided

TNCS grounding (third and fifth cable strands used as protection PEC

conductor).

Re-ground the PE conductor of the cable lead.

Components of the grounding device:

six vertical grounding conductors 2.5 meters long, angular steel 45x45x5 mm,

position 1.53 meters apart

horizontal conductors in the ground are located at a depth of at least 0.7 meters -

strip steel 60x5, in the shield - copper, section not less than 10 mm 2

Connect the steel elements of the grounding device

electric welding, with the required length of welding joints, connection of conductors in

room - bolted.

If grounding resistance is insufficient, add vertical

grounding conductors.

Ground device resistance measurements shall be provided

possibility of disconnecting the grounding conductor. In electrical installations

voltage up to 1 kV, such a place, as a rule, is the main grounding

tyre. Disconnection of the grounding conductor shall be possible only when

by means of a tool.

The main potential equalization system combining:

- zero protective PE-conductor of the supply line.

a grounding conductor connected to the grounding device of the electrical installation;

- protective conductors of plug sockets

- zero protective conductors.

The main protection against direct contact with current-carrying parts of electrical equipment is provided by:

- basic insulation of current-carrying parts;

- use of protective shells for power and lighting electrical equipment;

- placement outside the range of current-carrying parts of electrical installations

The connection of each open conducting part of electrical installations (if any) to the GWN must be made using a separate branch.

Portable electric receivers are supplied from sockets connected to group networks and protected by PE conductors of sockets protected by use of ultrasound.

In the area of RCD operation, the zero operating conductor has no connections with grounded elements and protective conductors.

The potential equalization system, re-grounding and protective conductors are combined on the PE bus (in BRU), which is the main grounding bus.

Connections of zero protective conductors shall be available for inspection.

Electricity accounting.

General requirements.

A three-phase meter shall be installed in the introductory switchgear to account for the active electricity released to the consumer for cash settlement for it.

Installation of metering circuits shall be performed in accordance with the requirements of Electrical Installation Rules. Schematic diagram of accounting organization is given on sheet No. 3

Technical support.

To organize the metering of power consumption in the BRU, install a direct-flow electric energy meter of the Mercury type 230 ART01 CLN 3x230/400V. The counter is designed to account for active electric energy in three-phase 4-wire AC networks with a frequency of 50 Hz with the possibility of tariff accounting for the zones of the day.

Rated voltage, 230, 400V

Rated (max) current, 5 (60) A

Accuracy class - 1.0

Temperature range, 40 to t 55 * C

The height to the counter clamp box shall be between 0.8 and 1.7m. During installation

wiring for connection of direct switch-on counter near

The wire ends must be at least 120 mm long. For safe installation and replacement of the counter, it is possible to turn off the counter with an input switch of the ABB type S203 C25A installed before it.

Protection against unauthorized access.

The lead-in switch shall have sealing covers.

Design of assemblies and boxes of clamps of design counters shall ensure their sealing.

The design counter shall have on the screws fixing the meter casing, seals with the State Monitor stamp, and on the clamping cover the seal of the power supply organization.

On the newly installed three-phase electric meter there should be seals of state verification with a duration of not more than 12 months.

Violation of seals on the calculation meter deprives of legal effect the accounting of electricity carried out by this calculation meter.

Connection is not allowed in the wiring to the calculation counter.

Organization of accounting operation.

The rearrangement, replacement, as well as the change in the schemes for the inclusion of accounting facilities, are carried out with the consent of the energy-household organization.

The owner of the power facility is responsible for the safety of the design meter, its seals and for the compliance of the power metering circuits with the established requirements.

During operation, the measuring instruments used to account for electrical energy shall be checked periodically.

The interval of electric meters is eight years.

Environmental protection

Designed electric networks do not have harmful effects on the environment, therefore, environmental measures are not required.

Organization of electrical plant operation.

The operation of electrical installations should be carried out in accordance with the obligations for maintenance and operation set forth in Article 543 of the Civil Code of the Russian Federation, the requirements of "Maintenance of technical operation of electrical installations of consumers," the requirements of "Intersectoral rules for labor protection (POT R M016200D," other regulatory documents of Rotehnadzor of the Russian Federation.

The following requirements of "Rules for technical operation of electrical installations of consumers" PTEEP2003 and "Intersectoral Rules for Labor Protection (Safety Rules) during Operation of Electrical Installations" POT R M0162001, RD 15334.0-03.15000 2001g shall be met prior to commissioning of electrical installations.

1. To directly perform the duties of organizing the operation of electrical installations, the head of the Consumer (except for citizens who own electrical installations with a voltage of more than 1000 V, appoints the organization responsible for the electrical management and its deputy as the corresponding document. For Consumers whose installed capacity of electrical installations does not exceed 10 kVA, the employee replacing the person responsible for the electrical industry may not be appointed.

2. Complete electrical installations with a set of tested and tested protective equipment.

According to GOST 21.10197 item 4.2.9 (for all types of hidden works it is necessary to draw up acts of inspection of hidden works.

According to SP 311102003 p. 14.15, wiring in cavities above impassable suspended ceilings and inside prefabricated partitions are considered as hidden, and they should be performed:

- behind suspended ceilings and in cavities of partitions made of non-combustible materials of NC and fuel group P, wiring shall be made with wires and/or cables B of non-metallic pipes and non-metallic boxes satisfying fire safety requirements, as well as cables with ngLS index (non-spreading combustion, with low smoke and gas release},

- behind suspended ceilings and in cavities of partitions made using materials of flammability group T2, wiring shall be made with wires and/or cables in metal pipes and metal ducts with degree of protection not lower than IP4X, behind suspended ceilings and in cavities of partitions made with the use of materials of the flammability group of HZ, Wiring Cable in metal pipes and metal ducts with degree of protection not lower than IP4X, - behind suspended ceilings and in cavities of partitions made using materials of flammability group G4, wiring shall be performed with wires and/or cables in metal pipes having localization capacity, as well as B having

localization ability of metal blind boxes,

- wiring shall be replaceable.

After installation of electrical installations According to the limits of company affiliation the networks (item 1.2.3 of CTEEP) are on the Customer's balance sheet and are operated by its personnel.

The use of electricity is carried out on the basis of the contract of the "Customer" with the department of electricity sales with LLC "PSK."

The limit of company ownership and operational responsibility is established by the Act of demarcation between the Subscriber and the power supply organization.

Lightning protection

This project is not considered.

Fire Safety Measures

Fire protection measures are designed in accordance with the requirements of "Instructions for designing fire protection of power plants" RD15334.0-49.1012003 for group 3.

Degrees of fire resistance of buildings and constructions are accepted according to St.87 of Federal law No. 123FZ of 22.06.2008 (for TP-3 gr.), and categories of productions - according to "The list of categories of rooms and buildings on fire and explosion and fire hazard" RD 34.03.35098.

Gaps between buildings and structures are accepted in accordance with fire regulations and requirements of RD 15334.0-03.30100 (VPPB 010295) "Fire safety rules for power plants."

Fire safety shall be ensured in accordance with the requirements of the "Instructions on fire safety measures during fire work at power plants" CO, 15334.03.3052003 as well as GOST 12.1.00496 "Fire safety. General requirements. "

Fire safety of electrical networks and electrical installations is ensured by:

- use of non-combustible structures;

- selection of equipment and electrical installation products corresponding to environmental conditions and nominal voltage;

- selection of grades and sections of wires and cables, methods of their laying that meet PUE requirements;

- automatic disconnection of K.Z. currents;

- protective grounding.