Battery installations. building part

Free technical library

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

Section 4. Switchgears and substations

Battery installations. building part

Free technical library

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

Comments on the article

4.4.26. Stationary batteries must be installed in rooms specially designed for them. It is allowed to install several acid batteries in one room.

4.4.27. Battery rooms belong to category E production facilities and must be located in buildings of at least II degree of fire resistance according to the fire safety requirements of SNiP 21-01-97 of the Russian State Construction Committee.

Doors and window frames may be wooden.

4.4.28. It is recommended to install batteries in rooms with natural light; For windows it is necessary to use frosted glass or glass coated with white adhesive paint.

Battery rooms may be located without natural light; It is also possible to place them in dry basements. In these cases, the use of easily removable panels is not required.

4.4.29. Portable closed-type batteries (for example, starter batteries) used to power stationary electrical installations, as well as open batteries up to 60 V with a total capacity of no more than 72 Ah can be installed both in a separate room with natural ventilation, and in a general production area. non-explosion and non-fire hazardous premises, in ventilated metal cabinets with air removed from the premises. Portable closed-type batteries operating in discharge or constant recharge mode, the charge of which is carried out outside the place of their installation, can also be installed in metal cabinets with blinds without removing air outside the room.

If the specified conditions are met, the class of premises in relation to explosion and fire hazards does not change.

4.4.30. Sealed stationary batteries, the charge of which is carried out at a voltage of no higher than 2,3 V per cell, can be installed in a general production non-explosion and non-fire hazardous room, provided that a ventilation hood is installed above them. At the same time, the class of premises in relation to explosion and fire hazard does not change.

4.4.31. The battery compartment must be:

located as close as possible to the chargers and DC distribution board;
isolated from the ingress of dust, fumes and gas, as well as from the penetration of water through the ceiling;
easily accessible to maintenance personnel.

In addition, the battery room should not be located near sources of vibration or shaking.

4.4.32. Entrance to the battery room must be through the vestibule. An entrance device from domestic premises is not permitted.

The vestibule must be of such dimensions that the door from the battery room to the vestibule can be opened and closed when the door from the vestibule to the adjacent room is closed; The area of the vestibule must be at least 1,5 m2. Vestibule doors must open outward and must be equipped with self-locking locks that allow them to be opened without a key from the inside.

There should be signs on the doors: “Battery-powered”, “Flammable”, “Do not enter with fire”, “Smoking is prohibited”.

4.4.33. When storing batteries, there must be a separate room for storing acid, separators, accessories and for preparing electrolyte with an area of at least 4 m2.

4.4.34. The ceilings of battery rooms should, as a rule, be horizontal and smooth. Ceilings with protruding or sloping structures are permitted, provided the requirements of 4.4.43 are met.

4.4.35. The floors of battery rooms must be strictly horizontal, on a concrete base with an acid-resistant coating (acid-resistant ceramic tiles with acid-resistant material filling the joints or asphalt).

When installing racks on an asphalt surface, support platforms made of durable acid-resistant material must be used. Installing racks directly on asphalt pavement is not permitted.

A plinth made of acid-resistant material must be installed inside the battery and acid rooms, as well as at the doors of these rooms.

4.4.36. Walls, ceilings, doors and window frames, ventilation ducts (from the outside and inside), metal structures and other parts of battery rooms must be painted with acid-resistant paint.

4.4.37. When placing batteries in fume hoods, the interior surface of the cabinets must be painted with acid-resistant paint.

4.4.38. In battery rooms with a rated voltage of more than 250 V, wooden gratings must be installed in service passages to isolate personnel from the floor.

4.4.39. When using inventory ventilation devices, there must be places for their installation and outlets for the supply and exhaust ventilation ducts of the battery room.

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

A new value for the upper limit of the neutrino mass has been established 23.12.2019

An international team of researchers using a new highly sensitive spectrometer has found a new upper limit on the mass of elusive neutrino particles. Until recently, it was believed that neutrino particles do not have mass at all, but the results of some studies indicate the fallacy of such a judgment. And, of course, the next logical step should be to determine this mass, and this is done by gradually narrowing the range between the upper and lower limits of this value.

Scientists have long been able to find evidence that the mysterious neutrino particles exist in reality, their number, according to assumptions, is a billion times greater than the number of atoms in the universe. However, despite such an abundance of these particles, scientists have only made limited progress in studying their properties. And these properties must include a lot for our understanding of the physics of processes occurring at the smallest level.

Let us return to the measurement of the neutrino mass. There are currently three different methods for this. The first method uses the analysis of cosmic microwave background radiation, the second method is looking for very rare cases of neutrinoless double beta decay of certain elementary particles, and the third method is to try to directly measure the neutrino mass in exotic ways that do not rely on any of the existing theoretical models.

It is this third method of measuring the neutrino mass that was used by scientists working in the framework of the KATRIN (Karlsruhe Tritium Neutrino Experiment) experiment conducted by researchers from the Karlsruhe Institute of Technology in Germany. The key instrument of this experiment is a huge 200-ton electron spectrometer, which is used to study the decay of tritium, a radioactive isotope of hydrogen. When tritium decays, it creates a single electron and a neutrino at the same time. Knowing the initial energy of tritium and measuring the energy of this electron using a highly sensitive spectrometer makes it possible to calculate the neutrino mass with a sufficiently high accuracy, exceeding the accuracy of previous similar measurements.

The data collected during the experiment indicated that the value of the upper limit of the neutrino mass is 1.1 electron volts, which is approximately half of the value previously determined. And this, one might say, is a very small mass, which is 500 thousand times less than the mass of an electron, which also cannot be called a large and heavy particle.

Other interesting news:

▪ Electric bandages are more effective than regular bandages

▪ 8 GB of video memory in a Eurocom laptop

▪ The mercury we breathe

▪ Milk clothes

▪ Discovery of the pentaquark

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Sites of amateur radio equipment. Article selection

▪ article What rule did Peter I establish for speakers in the Senate? Detailed answer

▪ article Adjuster of electrical devices. Standard instruction on labor protection

▪ article Triac power regulator. Encyclopedia of radio electronics and electrical engineering

▪ article Gas burner. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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