Switchgear 20 kV K-201 «Volga»

Middle-voltage 20kV switchgear K-201 Volga are used to receive and distribute electric power of three-phase alternating current with frequency of 50 Hz in networks with insulated or earthed neutral.
The enclosure body is made of high quality steel sheet with aluzinc-aluminised anticorrosion coating on high-precision equipment by cold forging. External elements of the enclosure such as doors, side panels are powder painted.
To ensure safety in case of electric arcing, cabinets with sliding elements are divided by metal partitions into compartments:
- busbar compartment;
- a compartment of retractable elements;
- compartment for current transformers and cable connections;
- compartment of auxiliary circuits.
Compartments of the withdrawable element, current transformers and cable connections, auxiliary circuits on the front side of the cabinet have doors with special locks. In cabinets with double-sided service in the rear of the cabinet is a removable panel that provides access to the compartment of current transformers and connections. Sliding modules with switches, contactors, sectionalisers and voltage transformers allow easy maintenance and repair of this equipment in operation. Schemes of auxiliary circuits of switchgear are designed for various microprocessor-based protection, control, automation and signalling devices. Electricity metering can be carried out on induction or multifunctional microprocessor-based electricity meters.
Full operational safety of the K-201 Volga series switchgears is ensured by the design solutions, simplicity and clarity of switching operations, as well as a well-designed system of operational interlocks. Design solutions ensuring safe operation include:
- the presence of metal partitions between compartments of switchgear unit, allowing localisation of an accident within one compartment;
- availability of arc protection systems with emergency pressure relief valves and modules reacting to flashover with response time up to 5 ms;
- availability on the front of the cabinets of indicators of voltage presence on live parts of the connection and sockets for checking the presence of voltage and phasing of cables. The simplicity and visibility of switching operations is ensured by: the possibility of visual control of the position of switching devices, the presence on the façade of cabinets mnemonic scheme reflecting the position of the withdrawable element, as well as contacts of circuit breakers, disconnectors and earthing switches.
The interlocking system prevents incorrect actions of personnel during operational switching. The following mechanical interlocks are provided:
- locking, fixing the withdrawable element in the operating and control positions;
- lock preventing movement of the withdrawable element when switching on the earthing switch;
- lock preventing the opening of the doors in the control and repair positions of the withdrawable element;
- lock preventing opening of the door of the withdrawable element compartment in the working and intermediate positions of the withdrawable element;
- interlocks preventing operation with the earthing switch when the bay compartment door is open and the withdrawable element is in the working or intermediate position;
- interlock preventing the opening of the bay door when the earthing switch is open.
The main advantages of switchgear series K-201 "Volga":
- compact switchgear;
- use of air insulation;
- construction consists of four armoured separate compartments;
- reliable interlocking system, easy to maintain and eliminating switching errors;
- the presence of metal flaps automatically closing access to fixed live contacts;
- indication of the presence of voltage in each cell on the relay compartment door;
- original design providing easy access to the equipment;
- possibility of two- and one-way service mode of switchgear;
- application of modern microprocessor-based automatic protection devices;
- arc protection systems with the use of devices reacting to the flashover via fibre optic cable;
- possibility of using cells of different widths to save space in the building.
- external connections can be made by cable or busbar;
- stainless steel and aluzinc coated steel housing;
- multi-year warranty on all steel structures due to the use of anti-corrosion coating and powder coating;
- possibility to modernise and add new cells;
- application of busbars from one copper strip with cross-section 8x80 mm for currents up to 1600A, for optimal installation and reducing the cost of the product;
- optimal combination of price, quality and technical parameters.

Technical data

We offer You documentation for the manufacture of switchgear 20 kV K-201 «Volga»:

- Preliminary technical documentation for participation in tenders for the manufacture of switchgear 20 kV K-201 «Volga». We will prepare for you the necessary information to assess the possibility of manufacturing products in accordance with the requirements of tender documentation and questionnaires.
- Working drawings, 3-D models, and other necessary documentation for the manufacture of switchgear 20 kV K-201 «Volga» at your enterprise. If you do not plan to independently manufacture components and parts of the product, we will help you place their production at third-party enterprises. General assembly of the product and installation will be carried out at your enterprise.
- All documentation, if necessary, is adjusted in accordance with the requirements of the project, as well as in accordance with the technological capabilities of your enterprise.
- If equipment from another manufacturer is installed at the substation, we will prepare for you documentation for the manufacture of similar equipment in addition to the installed one

Advantages of working with us:

- You do not need to employ highly qualified engineers - You receive a set of documentation for the product being manufactured, which can be operated by a semi-skilled engineer.
- You do not need to manufacture prototypes of products - our experience allows us to successfully launch serial batches of products for production.
- Working according to our documentation - your specialists will receive advice on all the nuances of manufacturing switchgear 20 kV K-201 «Volga».

For additional information on switchgear 20 kV K-201 «Volga», please contact: This email address is being protected from spambots. You need JavaScript enabled to view it.

... and, as you know, a mistake made during the design of a product results in 10-fold costs during manufacturing, and 100-fold during its operation...

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