Complete switchgear (KRU): types, features, purpose

Date:

2020-04-03 07:00:15

Views:

619

Rating:

1Like 0Dislike

Share:

Table of contents:

This article will contain information about switchgear. Will be given their characteristics, types and purpose.

complete switchgear KRU

Scope

Complete switchgear (KRU) – the device consisting of shields, which is built

  • The offices of start-up and management of electrical equipment;
  • Protection device;
  • Current devices;

As well As other additional components, assembled and ready to use.

The Main purpose is receiving and further distribution of electricity in three-phase networks with an operating frequency of 50 Hz and voltage over 1000 V.

Complete switchgear (KRU) are divided into two types: external and internal installation. For indoor installation placed in buildings or on the premises. Such devices are assembled with the busbar. If you are using an operating voltage more than 35 kV air insulation used in networks 110 kV isolation is sulfur hexafluoride.

As a rule, in modern switchgear use of high voltage vacuum breakers as machine protection and switching, but there is a more antiquated system, where oil circuit breakers are installed.

Distribution boxes switchgear PH 6 is made for outdoor installation and are divided into two types of execution: roll out, in which all parts and components are fixed on a Board, and stationary, where all parts and components installed for a long service life.

Installation external installation

Switchgear of outdoor installation you must prepare for installation, so the first thing laid the Foundation. Cells move in packages before to install all the device. After that, unpack and roll out carts from the case in which the installed switching equipment. Set cell according to the plan of arrangement. Installation begins with the extreme. After he verified the correct installation of the Cabinet, install the next. It is important that the cells should not stand at an angle.

Recommended

Staff evaluation: system and methods

Staff evaluation: system and methods

Personnel Assessment allows you to identify how competent the employees involved in the enterprise, and it is the performance of their work – the most significant factor affecting the efficiency of the company. To clarify the impact of performa...

How to start your own business: important aspects.

How to start your own business: important aspects.

Many people, tired of working for someone else, are increasingly thinking about how to start your own business. Someone wants to open a salon, someone store, and someone enough and vegetable stalls. Before you throw in the pool with his head, it is i...

business activities. its essence and basic functions

Business activities. its essence and basic functions

The Entrepreneurial activity of the citizen – is undertaken at your own risk and independent activity, which aims to systematically profit through the sale of works, goods, services, use of the property. The citizen engaged in such activities, ...

cabinets switchgear KRU pH 6

And for installation of overhead lines on the roof installing the brackets. You must also install local lighting near each cell. High-voltage cable lines with end couplings secured to the findings of Crewe in the rear door of the Cabinet. Then complete switchgears for outdoor installation ready for operation.

Design

complete switchgears for outdoor installation

Designed factory-assembled switchgears (KRU) the voltage of 6/10 kV, should ensure the normal functioning of all the elements installed in it. Crewe similar in appearance to a large steel cell, inside which are mounted the switching, protective and auxiliary devices. The outer layer of cells created from steel sheets, it was done to increase the structural strength and protection against electric shock short-circuit of other devices located nearby.

Distribution boxes switchgear PH 6 is equipped with a special local heating, whereby the clamp devices work fine in the winter.

Technical characteristics and switching capacity

Complete switchgear (KRU) 10 kV has the following nominal data:

  • Operating voltage - 6, 10, 35, 110 kV;
  • Working frequency industrial network 50 Hz;
  • Working current - 630 A;
  • Current outages - 12,5, 20, 25, 35, 40 kA;
  • Insulation – air;
  • Type switches – vacuum;
  • Type of current transformer – GOOD-6;
  • Type of power transformer – TM-25;
  • Drive type – electric.

Switching resistance of switchgear is determined based on the parameters of the instrument that is embedded in the device circuit breakers with installed on it drive. Switching equipment that is installed at Crewe, should work at the rated load and withstand the test cycles at high values of current outages, which are established in the specifications of internal units.

The Sliding element and the degree of protection

complete switchgear KRU-10 kV

A Sliding element on which you installed switchgear can be transmitted manually or by mechanical means. This cart should pass the path on a smooth surface because it has a relatively large mass.

All switchgear cabinets should be convenient in operation and designed for comfortable installation, repair and replacement of parts. In most of the switchgear cabinets during the rolling retractable truck from cell in the working position the openings towards the stationary disconnecting contacts the main chain lock special blinds.

Depending on the application, installation there are different type of performance. Crewe to comply with eclectic and mechanical structural strength, insulation and resistance to aggressive operating conditions. Location category Crewe:

  • V3 – intended for work in premises with natural air circulation;
  • V4 – designed for rooms with artificialclimatic conditions.

The design of the switchgear must provide stable vibrations, which occur during switching on and off high-voltage switches, and the displacement of the installation. In this case, all devices should work properly, but the relay protection does not operate during operation at nominal parameters.

Switchgear can be manufactured for different climatic conditions using a local heating or cooling.

Operation

switchgear switchgear of voltage 6 10 kV

When operating switchgear it is necessary to arrange technical inspection and care of equipment, which is located in the cell, and Troubleshooting.

Observing the operation of equipment doing the duty electrician or the staff that operates the installation. According to modern safety requirements, to work with electrical installations is not allowed one person, so when you work with Crewe need at least two.

Workers who are engaged in repair of the installation should be trained and have a group access not lower than IV, but should also know about the equipment, which is located in Crewe and provide the function of the parts of the electric mechanisms.

Installation with working voltage up to 35 kV

Switchgear high voltage series BM-4 are used for transmission of electric power in networks of three-phase current with industrial frequency of 50 Hz and an operating voltage of 35 kV.

A cell of the switchgear has a design painted galvanized steel sheets which are connected by welded or riveted method. Internally installed high-voltage circuit breakers, voltage transformers, switching equipment, measuring instruments and switch.

Such switchgear designed for two-way service. When installed in small structures produce a modified switchgear of unilateral maintenance. To maintain the temperature in the cells in the blinds. Also for relief of excess pressure that may occur in the case of emergency operation or short-circuit currents, on the roof of the cell is set to rip off a valve.

Device grade K-63

KRU grade K-63 created from the metal casing, rigidly fixed to supports, inside which is all protective, switching and transformer equipment. Switchgear metal-clad type K-63 as well as the other intended for transmission and distribution of electric current in three-phase networks, the industrial frequency of 50 Hz with voltage 6 kV.

Feature KRU K-63 is that it can be used as a transformer device. The main switching devices K-63 are a modern high-voltage circuit breakers BB/TEL with the use of Electromechanical relays or microprocessor-based protection.

switchgear switchgear type to 63

Cell-To-63 is designed for installation in the premises, and the transformer may be located outdoors. K-63 is assembled with a single busbar, the electricity is fed through a high-voltage cells input in Crewe that is located on the roof.

Device grade K-594: the advantages

Switchgear switchgear stamps-594, as all the settings are applied to networks with voltage 6-10 kV and a working frequency of 50 Hz.

switchgear high voltage

As a rule, KRU K-594 are used in substations, power plants, agricultural facilities and rail transport. Complete switchgear KRU-594, the price of which depends on the provider and region of purchase, great for connecting high-voltage engines and other electric machines. The main advantages of KRA are:

  • All electric mechanisms contained in a cell and fitted with at the works;
  • Switchgear increases the safety of the installation and operating personnel;
  • All of the most challenging elements set to roll out truck that reduces the complexity of maintenance of the equipment;
  • The watermark is not bulky, so they significantly save space in the room.

Complete switchgear (KRU) K series-594 have specifications that can change in case of increase or decrease calculated nominal indicators of consumers that will be connected to Crewe.

Conclusion

Crewe – is a reliable way to connect consumers, as it has high reliability and ease of use, and ease of maintenance and repair. They have earned their popularity in the world market as a reliable instrument of power transmission.


Article in other languages:

AR: https://tostpost.com/ar/business/22061-complete-switchgear-kru-types-features-purpose.html

BE: https://tostpost.com/be/b-znes/39268-kamplektnyya-razmerkaval-nyya-prylady-kru-v-dy-haraktarystyk-pryznache.html

HI: https://tostpost.com/hi/business/23323-kru.html

JA: https://tostpost.com/ja/business/21382-kru.html

KK: https://tostpost.com/kk/biznes/39929-zhina-ty-tarat-ysh-ryl-ysy-zht-t-rler-sipattamalary-ta-ayyndau.html

PL: https://tostpost.com/pl/biznes/41344-kompletne-rozdzielnice-kru-rodzaje-w-a-ciwo-ci-zastosowanie.html

PT: https://tostpost.com/pt/neg-cios/40998-completas-e-manobra-kru-tipos-caracter-sticas-atribui-o-de.html

TR: https://tostpost.com/tr/business/36820-komple-da-t-m-cihazlar-kdc-t-rler-zellikler-randevu.html

UK: https://tostpost.com/uk/b-znes/40139-komplektn-rozpod-l-n-pristro-kru-vidi-harakteristiki-priznachennya.html

ZH: https://tostpost.com/zh/business/45444-complete-switchgear-kru-types-features-purpose.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

Comments (0)

This article has no comment, be the first!

Add comment

Related News

Tiller MTD Т380 M: reviews

Tiller MTD Т380 M: reviews

tiller MTD relates to a compact heavy duty agricultural equipment. With the help of machine work can be done by loosening various kinds of soils, not over. In addition, the machine is used for removing weeds, earthing up and ploug...

How to come up with a name for an online store?

How to come up with a name for an online store?

Ideas of names for an online store in the Network hovering enough. Most of them suffers from repeated repetitions on a variety of web resources. And so you want to opening own business, something unusual and, most importantly, eff...

Meat processing plants of Moscow and Moscow region, list, products

Meat processing plants of Moscow and Moscow region, list, products

Modern meat-packing plants in Moscow produce a huge range of products, which differs in taste and nutritional value. Every company can boast of sausages and meat delicacies created according to original recipes. Sausages are creat...

The shipment is detained in customs clearance point: what to do?

The shipment is detained in customs clearance point: what to do?

today, many of us at least once in their lives enjoyed the services of foreign online shops and order the delivery of the goods through the different mailing services. Any product purchased in the foreign Internet-stores and the p...

How many bonuses on the map

How many bonuses on the map "El Dorado": the program, discounts and reviews

Modern stores everywhere are introducing a loyalty program. Was no exception and the company “Eldorado”. Storage card allows you to collect bonuses for purchases and spend them on other goods, and participate in differ...

Potatoes Riviera: a description of the variety, reviews

Potatoes Riviera: a description of the variety, reviews

“Fries — second bread», - said in Russia. And it is justified, no fast food can compare with young boiled potatoes sprinkled with finely chopped greens. And the sooner it appears in our gardens, the better, so ea...