Grounding. Potential equalization system. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Electrician

Grounding. Potential equalization system. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Grounding and grounding

The rules for the implementation of the potential equalization system are defined by the IEC 364-4-41 standard and paragraphs. 1.7.82, 1.7.83, 7.1.87, 7.1.88 PUE of the 7th edition. These rules provide for the connection of all conductors to be grounded to a common bus (Fig. 14.7).

This solution avoids the flow of various unpredictable circulating currents in the grounding system, causing the occurrence of a potential difference on individual elements of the electrical installation.

Rice. 14.7. Potential equalization system

On fig. 14.8 shows an example of a potential equalization system in an electrical installation of a residential building. At the entrance to the building, a potential equalization system must be made by combining following conductive parts:

main (main) protective conductor;
the main (main) grounding conductor or the main grounding clamp;
steel pipes for communications between buildings and between buildings; metal parts of building structures, lightning protection, central heating, ventilation and air conditioning systems. Such conductive parts must be interconnected at the entrance to the building.

Council. It is recommended to re-execute additional potential equalization systems during the transmission of electricity.

Rice. 14.8. Potential equalization system in a residential building

All open conductive parts of stationary electrical installations accessible to the touch, third-party conductive parts and neutral protective conductors of all electrical equipment (including socket outlets) must be connected to an additional potential equalization system.

For bathrooms and shower rooms, an additional potential equalization system is mandatory and should include, among other things, the connection of third-party conductive parts that extend outside the premises. If there is no electrical equipment with zero protective conductors connected to the potential equalization system, then the potential equalization system should be connected to the PE bus (clamp) at the input.

Heating elements embedded in the floor must be covered with a grounded metal mesh or a grounded metal sheath connected to a potential equalization system. As an additional protection for heating elements, it is recommended to use an RCD for a current of 30 mA. For potential equalization, specially provided conductors or open and third-party conductive parts can be used.

Author: Koryakin-Chernyak S.L.

See other articles Section Grounding and grounding.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Camcorders JVC GZ-R550 and GZ-R440 20.05.2017

JVC has introduced the new all-weather Everio R series camcorders, the GZ-R550 and GZ-R440 models, which will go on sale this month.

New items are made in accordance with Quad-Proof technology, which provides comprehensive protection. The devices are not afraid of diving under water to a depth of up to five meters, as well as falling from a height of up to one and a half meters. In addition, the cameras are not afraid of dust and are guaranteed to remain operational when operating at temperatures down to minus 10 degrees Celsius. Finally, camcorders do not sink in water, so you don't have to worry about losing them when shooting during active water sports.

Camcorders are endowed with Konica Minolta HD Lens optics. 40x optical zoom and 60x Dynamic Zoom are supported. A 2,5-megapixel back-illuminated CMOS sensor and a FALCONBRID image processor are used.
The camcorders are equipped with a 3-inch touchscreen display. Video recording can be done with the screen closed.

The black Everio R GZ-R550 supports AVCHD Progressive recording and comes with 32GB of built-in memory. The price is 500 USD. The Everio R GZ-R440 will be available in black and orange. This modification, endowed with 4 GB of memory, is estimated at $ 400.

Other interesting news:

▪ Ultrabook Toshiba dynabook V632 has 13 hours battery life

▪ Europe's largest dinosaur

▪ Toshiba Camileo X-Sports action camera

▪ Red phosphorus to increase the capacity of lithium batteries

▪ How to beat smartphone addiction

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Instructions for use. Article selection

▪ article by Jose Marti. Famous aphorisms

▪ article Which poet, distinguished by deep pessimism, died of laughter? Detailed answer

▪ Electrician article. Job description

▪ article Electronic tachometer (for a motorcycle). Encyclopedia of radio electronics and electrical engineering

▪ article Indication of switching ranges of the receiver. 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