Parameters of explosion-proof connections of electrical equipment of subgroup IIC

Free technical library

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

Appendix 5. Characteristics of explosion-proof connections of explosion-proof equipment

Parameters of explosion-proof connections of electrical equipment of subgroup IIC

Free technical library

Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

Comments on the article

Table A5.7

Type of flameproof connection	Free volume of the shell, cm³	Slit length L₁, mm	Slot length to bolt hole L₁, mm	Slot width of flat and cylindrical flameproof joints W₁ and W_d, mm
Flat fixed flameproof connection (Fig. A5.1)	Until 100 From 100 500 up	6 9,5	6 6	0,1 0,1
Cylindrical fixed flameproof joint	Until 500	6	-	0,1
		12,5	-	0,15
		40	-	0,2
	От 500	12,5	-	0,15
	Until 2000	40	-	0,2
	above 2000	25	-	0,5
	above 2000	40	-	0,2
Flat-cylindrical fixed flameproof connection (Fig. P5.2, %; b > 0,5L₁, c + a > 6 mm)	Until 2000	12,5	8	0,15
		25	9	0,18
		40	9	0,2
	above 2000	25	9	0,18
	above 2000	40	9	0,2
Movable explosion-proof connection of rods and control rollers (Fig. A5.4)	Until 100	6	-	0,1
		12,5	-	0,15
		40	-	0,2
	От 100	6	-	0,1
	to 500	12,5	-	0,15
	to 500	40	-	0,2
	От 500	12,5	-	0,15
	to 2000	40	-	0,2
	above 2000	25	-	0,15
	above 2000	40	-	0,2
Movable explosion-proof connection of the shafts of electrical machines with rolling bearings (Fig. A5.3)	Until 100	6	-	0,15
		12,5	-	0,25
		40	-	0,3
	От 100	9,5	-	0,15
	to 500	12,5	-	0,25
	to 500	40	-	0,3
	От 500	12,5	-	0,25
	to 2000	40	-	0,3
	above 2000	25	-	0,25
	above 2000	40	-	0,3

See other articles Section Rules for the technical operation of consumer electrical installations (PTE).

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

phone on hydrogen 11.02.2011

A Singaporean company has launched a pocket hydrogen fuel cell that can charge cell phones, digital players and other portable electronics.

A one and a half to two watt battery uses hydrogen from a replaceable cartridge, which can be recharged with combustible gas up to a thousand times. Hydrogen is stored in the cartridge as a powder of rare metal hydrides, so there is no danger of explosion (metal hydrides are even allowed to be transported in the cabin of an airliner).

The hydrogen energy reserve in the cartridge is 15 watt-hours, which allows you to charge a regular phone two or three times.

Other interesting news:

▪ The cat makes its owner healthier

▪ Alpha Bonfire Pocket Bonfire

▪ Universal Driver GP-LC7028-Q5D

▪ High speed motor driver IRMCK201/203

▪ Epson 10000 lumens installation projectors

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Aphorisms of famous people. Article selection

▪ article Trouble is not yet so big handed. Popular expression

▪ article How many words are there in Japanese for me and you? Detailed answer

▪ article Airhod fisherman. Personal transport

▪ article Trinistor regulator. Encyclopedia of radio electronics and electrical engineering

▪ article White is not white? Physical experiment. physical experiment

Leave your comment on this article:

All languages of this page

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