Internal power supply and electrical lighting networks

Task

1. General Information

1.1 Project Customer: CAESARSATELIT CJSC (INN 7704191876 KPP 773001001, OGRN 1050204437513), 121170, Moscow, Kutuzovsky Prospekt, No. 36.

Grounds for performance of design works: task to develop a working project for the facility: office premises "CAESARSATELLIT" in Krasnodar, on the street Babushkina, d. No. 36.

The type of work is the design of internal power supply and electrical lighting networks for the facility: office premises "CAESARSATELIT" in Krasnodar, on Babushkina St. , d. No. 219..

The place of work is the office premises of CAESARSATELIT in Krasnodar, on Babushkina Street, d. No. 219.

Design Phase - Work Project

The deadline for issuing initial data is October 2008.

The project development timeline is November 2008.

Owner of design and installation works - CAESAR-SATELLITE CJSC

Contractor of design works - LLC CELERON, Krasnodar, 74 Suvorova St.

2. Technical Requirements for the Designed System

General Data:

2.1 Design documentation for power supply of premises shall be developed in accordance with the current regulatory documents (SNiP, PUE, VNP, PPB, etc.) with connection to the existing engineering systems of the premises.

When designing the power supply, proceed from the calculated values ​ ​ of electrical consumption at the installed and one-time power.

The design documentation shall be agreed with the Customer,

One copy of the project should be executed in the name of the landlord (owner), agreed on in terms of electricity metering in the Power Plant (subject to the availability of design meters) and in general in the Power Plant with permission for thermal load.

All electrical equipment shall have valid certificates of conformity, quality, fire safety, technical passports.

All electrical panels and electrical installation equipment are accepted in import version (Legrand, Efapel, IEK), electrical panels are installed in the area convenient for installation and subsequent operation (agreed with the Customer).

2.7. Power metering and distribution panels (DCU and DCB) are installed open on the wall of the room from the outside of the building. Complete the SCH and SCH with feeder line protection devices.

2.8. Place of installation of electrical panels and instruments to be agreed with the Customer. Information on the number of groups in the board and on the ratings of circuit breakers is taken from the calculation of load consumption.

2.9. On diagrams, specify cable routes, installation heights and type according to single-line diagrams.

3. Lighting

3.1 Electric lighting shall be provided by design in all

office premises.

3.2. Number and places of lighting fixtures installation are determined by architectural

design. Types of lamps used shall be specified and purchased by the Customer.

3.3. Control internal lighting by means of switches and circuit breakers by group load distribution. The places of switches installation shall be agreed with the Customer.

3.4. Perform working lighting in accounting, server.

3.5. Internal wiring of lighting circuits must be performed with a cable that does not support combustion (of BBGng type) with a section of at least 1.5 mm2 .

3.6. Ground each illuminator with metal housing.

3.7. Make wiring for lamps in PVC pipes and (or) cable-channels .

3.8. Work at the facility is carried out only in the daytime.

4. Socket part

4.1. The number of sockets and their places of installation shall be specified and agreed by the Customer according to the design solution.

4.2. In offices, install household sockets and sockets supplied from a separate group to power computers, the number should be set in the following order:

- 1 workstation 2 sockets of computer group 1 household outlet;

4.3. The socket network shall be a 2.5 mm2 non-combustible copper cable (IWGng type).

Provide for supply of separate supply lines, to splitsystems through separate automatic machines, by cable (type IWGng) with cross section of at least 2.5 mm2.

Provide installation of protective shutdown devices for all socket groups.

4.6. Perform the grounding system in accordance with the requirements of GOST R 50571.212000, GOST R 50571.222000 and PUE.

5. Power supply

On drawings to specify electroconsumers: boards ShchR10, SO,

ShchR10, SO have stationary execution.

5.2.Power power supply shall be made with copper cable with cross section of at least 4 mm2 (for 3-phase consumers - 5-voltage, for single-phase consumers - 3-voltage ).

5.3.Install diesel generator and uninterruptible power supply for uninterrupted backup power supply of server and control center equipment.

6. Design Input:

Specifications - agreed with power supply;

Act of survey works.

7. Requirements to the composition of the developed documentation.

Project documents shall include:

General data (RF master kit list, reference document list, general instructions) Explanatory note;

General Part and Source Data

The working design of the internal power supply and electric lighting networks of the office premises "CAESARSATELLIT" in Krasnodar on Babushkina Street, d. No. 219 was developed on the basis of:

inspection certificate, technical specification, technical specifications issued by the power supply organization and existing standards;

architectural and construction part of the project issued by the customer.

Distribution network voltage - 380/220 V.

Voltage of group power networks - 380/220 V.

Voltage of the working and duty lighting network - 220 V.

The design power is: Ppc = 14.2 kW.

The permitted power according to technical conditions is: Pp = 15 kW .

According to the degree of reliability of power supply, electric receivers belong to category 1.

Power supply diagram

Power supply of the facility is provided at 380/220V.

As the water and registration device of an object (ShchU15) the board with the counter of accounting of an elektroznergiya (TsE6803V type) established on an external wall of the building according to the scheme of placement of electroboards is used.

Electricity metering

Accounting of electricity consumption is provided by the three-phase counter of active energy (TsE6803V type) installed in a board of account ShchU15 and sealed by the electrosupplying organization.

Power electrical equipment

As protection and control equipment, the following are used: automatic switches and diphautomats Legrand and IEK installed in ShchR30, ShchA-1, ShchR10, ShchO-1.

As group cabinets, wall cabinets with modular equipment of the company "Legrand" "IEK" are used.

Boards ShchR30, ShchA-1 are established openly on walls or metal designs and have degree of protection of IP54 with installation over them protective peaks.

Distribution networks are carried out by cable VVGNG and laid: from ShchR30 to electroconsumers in a box of Efapel 110x50 PVC and in a gofrotruba of PVC of 50 mm.

The section is selected by long-term current, checked by voltage loss and for actuation of protections at single-phase short circuit at the end of the line.

Electric lighting. Working lighting accepted as general

Lighting is performed by lighting fixtures and chandeliers with 60 W filament lamps with degree of protection IP20, overlays with degree of protection IP20 in utility rooms. Operation lighting is controlled using circuit breakers of corresponding group boards.

Electrical wiring

Wiring to sockets from SB shall be made in cable of PVC channels Efapel 110x50 with dividing partitions separating low-current wires from power lines and in PVC corrugation pipe.

All wiring is performed by the BBGn wire with a section of at least 1.5 mm2.

In each room there are two groups of supply lines working and supplying computers.

The height of the socket installation in each room is determined by the location of utilities and is 100... 500 mm.

At one workstation, install 2 sockets from the power line group computers and 1 socket from the work group.

The section of wires and cables is selected in accordance with chapter 1.3 of PUE according to the heating condition with long-term design current and checked by loss of mains voltage, compliance with the current of the selected protection device, environmental conditions.

Grounding

To ensure safety against electric shock, all metal non-current-carrying parts of electrical equipment, lighting fixtures that are not normally energized, but may be in case of insulation damage, must be reliably busy. Zero protective core of cable or wire (PE) is used as a lead-in conductor: - in distribution and group networks - zero protective core of cable or wire (PE), in supply network - zero bushing cores (PEN).

The design envisages connection to the grounding of zero bushings (PEN) of the re-grounding device. The zero leads of the bushings are connected on the grounding bus (PE) of the switchgear to the grounding conductor of the re-grounding device with a 10 mm2 FP wire laid along the wall on the brackets. The resistance of the re-grounding device shall not exceed 10 ohms at any time of the year. Calculation is made for soils with resistivity of 100 ohms. l.

The main potential equalization system is performed at the input by combining the main protective conductor, the main grounding conductor or the main grounding clamp, metal parts of building structures using the main grounding bus (GWZ). In this design, the grounding bus of PE RBW is used as GWW.

The ground conductors of the main potential control system are used by a 10 mm2 FP wire. All earthing and potential equalization connections shall be made by bolted connections in accordance with GOST 10434.

In the present working draft all technical solutions on constructions, designs, the equipment and a technical part are accepted and developed in full accordance with the state norms, rules and standards.

Installation Instructions

Perform operations in accordance with the effective SNiP 3.05.0685, PUE. According to the Requirement of item 3.18 of SNiP 3.05.0685, passages through walls must be made in pipe sections, ducts, or openings. Lay independent protective conductor starting from group electric panel. Zero protective conductor shall be connected to protective contacts of sockets, lighting equipment and equipment. When supplying several sockets of one group line, the branch of the protective conductor to each socket must be performed at the branch points in the unpacking boxes and in the boxes for installation of sockets in one of the accepted ways (soldering, reconciliation, desalting, special compressible, terminals, etc.)

Serial inclusion of protective contacts of sockets in the protective conductor is not allowed. Connection to group panel for common contact protective clamp of zero working and protective conductors is prohibited. Electrical wiring according to PUE, item 2.1.31, shall provide the possibility of easy recognition along the entire length of conductors by colors:

-- blue to indicate zero operating or medium conductor of the electrical network;

a two-color yellow-green combination to indicate a protective or zero protective conductor;

-- coarse, brown, red, purple, gray, pink, white, orange, turquoise to indicate a phase conductor.

In order to reduce losses in neutral conductors, unevenness of load at three-phase inputs at its distribution by phases does not exceed 15%.