Design electrical power supply Business Center
Completed mep work on the facility located in Business Center (tenant's openspace). The contract included the design and installation of the power supply system and the lighting of the electricity, as well as the assembly, supply of panel equipment and commissioning.
DESIGNING ELECTRICITY
1.6 A three-wire network is provided for powering single-phase power consumers, and a five-wire power line for powering three-phase power consumers.
2. Electrical equipment.
2.1.In the project, equipment and wiring accessories imported Legrand and ABB.
2. The installation of the switchboard of the SchCA, the object is provided in the switchboard.
2.3. Performance of group electric networks is provided in all rooms by cables and wires of the brand VVGng-LS, in corrugated pipes and cable channels.
2.4. The cross section of wires and cables are shown in the diagrams.
2.5. The electrical installation in accordance with the ПУЭ item 2.1.31 should provide the possibility of easy recognition along the entire length of the conductors by colors:
- two-color combination of green-yellow color - to designate a protective or zero protective conductor;
- blue color - to designate the zero working conductor of the electrical network;
- black, brown, red, purple, gray, pink, white, orange, turquoise - to designate the phase conductor.
3. Electric lighting project.
3.1. The project provides the following types of lighting:
- working;
- on duty;
- emergency;
- evacuation.
Voltage networks 220/380 V.
3.2. Electric lighting in all rooms is provided at a voltage of 220 V.
3.3. Illumination of premises is adopted according to the project of AR. The types of luminaires are selected according to the project AR.
3.4. The lighting is controlled by the on-site key switches. Installation height of switches 900mm. from the level of the clean floor.
4. Electrical loads.
Calculation of electrical loads of consumers of electricity produced by the method of determining the loads using the demand factors. The magnitude of the estimated demand factors Kc taken into account the requirements set out in the joint venture 31-110-2003,
5. Protective security measures.
Protective measures of electrical installations should be carried out in accordance with the requirements of Chapter 1.7 ПУЭ.
As a protective measure against electric shock, a protective conductor is used as part of the cable that is connected to the PE bus on the switchboard. All metal enclosures of electrical equipment, as well as metal structures that may be energized, in accordance with item 1.7.76 (edition 7 ПУЭ) are connected to the protective conductor PE.
The same purpose serves as UZO, providing a high degree of protection of people from electric shock in direct and indirect contact, in addition, UZO provide a reduction of fire hazard installations.
The basic system of equalization of potentials in accordance with p.7.7.82 (ed. 7 PUE) is performed on the inputs of the Landlord (complex building).
6. Installation guidelines.
Work to be performed in accordance with the current SNiP 3.05.06-85, ПУЭ.
Passages through the walls must be made in accordance with SP 31.110-2003 p.14.24.
The laying of an independent protective conductor to perform starting from the group switchboard. The protective protective conductor must be connected to the protective contacts of the receptacles, lighting equipment and equipment. When powering several power outlets of one group line of protective conductor branching to each power outlet should be performed in the branch places in the wiring boxes and in the boxes for installation of outlets in one of the accepted ways (soldering, welding, crimping, special clamps, terminals, etc.) .
Consecutive connection of protective contacts of sockets into the protective conductor is not allowed. Connection to the group shield for the common contact terminal of the zero working and protective conductors is prohibited.
Electrical equipment and materials used for installation must be new, high-quality and have a certificate of conformity of Gosstandart of Russia. Electrical installation should be carried out in accordance with applicable Rules and Regulations.
PVC pipes and PVC boxes must have a fire safety certificate NPB246-97.
7. Organization of operation of electrical equipment of the consumer.
All switchings should be recorded in the technical documentation specified in PTEPH, chapter 1.8.
All work on the existing electrical installation must be carried out in accordance with the "Rules of safety in the operation of electrical installations of consumers."
Electrical installations should be equipped with basic and auxiliary protective equipment in the scope of the requirements of PTBEEP.
On all elements of the electrical installation must be marked with appropriate markings and signs (safety signs, the appointment of groups on the boards, direction and their marking).
Electrical installation personnel should undergo an annual TB knowledge test, and electrical installation should be preventive tests.
In the event of emergency situations, the operating personnel must first take actions aimed at releasing people affected by electrical current (according to Appendix B10 of PTBEPI when operating electrical installations of consumers), preventing electric shock of other people and preventing further development of the accident