Electric lighting. A common part. General requirements

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Encyclopedia of radio electronics and electrical engineering / Electrician

Section 6. Electric lighting

Electric lighting. A common part. General requirements

Free technical library

Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

Comments on the article

6.1.10. Illumination standards, glare limits for luminaires, illumination pulsations and other quality indicators of lighting installations, types and lighting systems should be adopted in accordance with the requirements of SNiP 23-05-95 "Natural and artificial lighting" and other regulatory documents approved or agreed with Gosstroy (Minstroy) RF and ministries and departments of the Russian Federation in the prescribed manner.

Luminaires must comply with the requirements of fire safety standards NPB 249-97 "Lights. Fire safety requirements. Test methods".

6.1.11. For electric lighting, as a rule, low-pressure discharge lamps (for example, fluorescent), high-pressure lamps (for example, metal halide type DRI, DRIZ, sodium type DNAT, xenon types DKst, DKsTL, mercury-tungsten, mercury type DRL) should be used. Incandescent lamps are also allowed.

The use of xenon lamps of the DKsT type (except for DKsTL) for indoor lighting is allowed with the permission of the State Sanitary Inspectorate and provided that the horizontal illumination at levels where a long stay of people is possible does not exceed 150 lux, and the locations of crane operators are shielded from direct lamp light.

When using fluorescent lamps in lighting installations, the following conditions must be met for the normal design of luminaires:

1. The ambient temperature should not be lower than 5oC.

2. The voltage of lighting devices must be at least 90% of the nominal.

6.1.12. For emergency lighting, it is recommended to use lamps with incandescent or fluorescent lamps.

High-pressure discharge lamps may be used provided they can be instantly ignited and re-ignited.

6.1.13. To power lighting fixtures for general indoor and outdoor lighting, as a rule, a voltage of not more than 220 V AC or DC should be used. In rooms without increased danger, 220 V voltage can be used for all permanently installed lighting devices, regardless of their installation height.

The voltage of 380 V can be used to power lighting fixtures for general indoor and outdoor lighting, subject to the following conditions:

1. The input to the lighting device and an independent, not built-in ballast, is carried out with wires or cables with insulation for a voltage of at least 660 V.

2. Input of two or three wires of different phases of the 660/380 V system into the lighting fixture is not allowed.

6.1.14. In rooms with increased danger and especially dangerous when the installation height of general lighting fixtures above the floor or service platform is less than 2,5 m, the use of fixtures of protection class 0 is prohibited, it is necessary to use fixtures of protection class 2 or 3. Use of fixtures of protection class 1 is allowed, in this case the circuit must be protected by a residual current device (RCD) with a trip current of up to 30 mA.

These requirements do not apply to fixtures serviced from cranes. At the same time, the distance from the luminaires to the flooring of the crane bridge must be at least 1,8 m, or the luminaires must be suspended not lower than the lower belt of floor trusses, and maintenance of these luminaires from cranes must be carried out in compliance with safety requirements.

6.1.15. In installations for lighting the facades of buildings, sculptures, monuments, highlighting greenery using lighting devices installed below 2,5 m from the ground or service platform, voltage up to 380 V can be used with a degree of protection of lighting devices not lower than IP54.

In installations for lighting fountains and pools, the nominal supply voltage of lighting devices immersed in water should be no more than 12 V.

6.1.16. To power local stationary lighting fixtures with incandescent lamps, voltages should be used: in rooms without increased danger - no more than 220 V and in rooms with increased danger and especially dangerous - no more than 50 V. In rooms with increased danger and especially dangerous, voltage up to 220 For luminaires, in this case, either a protective shutdown of the line at a leakage current of up to 30 mA, or the supply of each luminaire through a separating transformer (a separating transformer may have several electrically unconnected secondary windings) should be provided.

To power local lighting fixtures with fluorescent lamps, a voltage of no higher than 220 V can be used. At the same time, in damp, especially damp, hot and chemically active environments, the use of fluorescent lamps for local lighting is allowed only in fittings of a special design.

DRL, DRI, DRIZ and DNAT lamps can be used for local lighting at a voltage not exceeding 220 V in fittings specially designed for local lighting.

6.1.17. To power portable lamps in rooms with increased danger and especially dangerous, a voltage of not more than 50 V should be used.

In the presence of particularly unfavorable conditions, namely, when the danger of electric shock is aggravated by tightness, uncomfortable position of the worker, contact with large metal, well-grounded surfaces (for example, work in boilers), and in outdoor installations, a voltage of no higher than 12 V should be used to power hand-held lamps .

Portable hanging lamps, table lamps, floor lamps, etc. when choosing voltage, they are equated to stationary lamps of local stationary lighting (clause 6.1.16.).

For portable lamps mounted on adjustable racks at a height of 2,5 m or more, it is allowed to use voltages up to 380 V.

6.1.18. Luminaires with voltage up to 50 V must be powered from separating transformers or independent power sources.

6.1.19. Permissible deviations and voltage fluctuations for lighting devices should not exceed those specified in GOST 13109-87 "Electric energy. Requirements for the quality of electrical energy in general-purpose electrical networks."

6.1.20. It is recommended to supply power and lighting electrical receivers at a voltage of 380/220 V from common transformers, subject to the requirements of clause 6.1.19.

See other articles Section Rules for the installation of electrical installations (PUE).

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

The world's tallest astronomical observatory opened 04.05.2024

Exploring space and its mysteries is a task that attracts the attention of astronomers from all over the world. In the fresh air of the high mountains, far from city light pollution, the stars and planets reveal their secrets with greater clarity. A new page is opening in the history of astronomy with the opening of the world's highest astronomical observatory - the Atacama Observatory of the University of Tokyo. The Atacama Observatory, located at an altitude of 5640 meters above sea level, opens up new opportunities for astronomers in the study of space. This site has become the highest location for a ground-based telescope, providing researchers with a unique tool for studying infrared waves in the Universe. Although the high altitude location provides clearer skies and less interference from the atmosphere, building an observatory on a high mountain poses enormous difficulties and challenges. However, despite the difficulties, the new observatory opens up broad research prospects for astronomers. ... >>

Controlling objects using air currents 04.05.2024

The development of robotics continues to open up new prospects for us in the field of automation and control of various objects. Recently, Finnish scientists presented an innovative approach to controlling humanoid robots using air currents. This method promises to revolutionize the way objects are manipulated and open new horizons in the field of robotics. The idea of controlling objects using air currents is not new, but until recently, implementing such concepts remained a challenge. Finnish researchers have developed an innovative method that allows robots to manipulate objects using special air jets as "air fingers". The air flow control algorithm, developed by a team of specialists, is based on a thorough study of the movement of objects in the air flow. The air jet control system, carried out using special motors, allows you to direct objects without resorting to physical ... >>

Purebred dogs get sick no more often than purebred dogs 03.05.2024

Caring for the health of our pets is an important aspect of the life of every dog owner. However, there is a common assumption that purebred dogs are more susceptible to diseases compared to mixed dogs. New research led by researchers at the Texas School of Veterinary Medicine and Biomedical Sciences brings new perspective to this question. A study conducted by the Dog Aging Project (DAP) of more than 27 companion dogs found that purebred and mixed dogs were generally equally likely to experience various diseases. Although some breeds may be more susceptible to certain diseases, the overall diagnosis rate is virtually the same between both groups. The Dog Aging Project's chief veterinarian, Dr. Keith Creevy, notes that there are several well-known diseases that are more common in certain breeds of dogs, which supports the notion that purebred dogs are more susceptible to disease. ... >>

Random news from the Archive

Artificial crystals for cooling electronics 09.07.2018

Semiconductor devices generate heat during operation, which becomes a problem in improving the performance of microcircuits. Researchers at the University of Illinois at Urbana-Champaign and the University of Texas at Dallas have found a new way to improve heat dissipation.

The result of their study was a practical confirmation of the existence of materials with ultrahigh thermal conductivity.

The dissipation of heat by a silicon crystal is inefficient. The thermal conductivity of diamond is about 15 times greater, but its widespread use is difficult because the cost of natural diamonds is high, and artificial diamonds contain structural defects that reduce thermal conductivity.

The project participants relied on boron arsenide crystals, a material not found in nature. Using vacuum deposition, the scientists tried to form a structure with a low defect density and high thermal conductivity. By experimenting with process parameters and materials, the researchers were able to obtain a material with three times the thermal conductivity of the best materials currently used in heat spreaders.

The result of the next stage of research should be a process suitable for a wide application of the development.

Other interesting news:

▪ The Japanese are preparing new types of digital video recorders

▪ German trains will be switched to energy from wind and solar

▪ TP-Link AX1500 Window Router

▪ Neuromorphic chips for artificial intelligence

▪ New Resistor Programmable TMP300 Switches

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the Radio Control website. Article selection

▪ article by Vaclav Havel. Famous aphorisms

▪ article Why does the highest mountain in the world have an English name? Detailed answer

▪ article Employees and their proxies

▪ article Dutch lacquer Elemi for oil paintings. Simple recipes and tips

▪ article Shawls obey the command. Focus Secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews