Retrofit

Retrofit as a way of effective reconstruction of electrical equipment

Retrofit of electrical equipment is an effective option for upgrading obsolete devices without significant financial investments. Complex retrofit does not require large capital investments, it allows you to replace oil switches with modern models in the shortest possible time and without loss of component compatibility.

The installation of new switchgear increases the efficiency of the power system and the reliability of its functioning, which is currently one of the most pressing issues.

Oil switches and other electrical equipment put into operation more than 40 years ago are used at many Russian industrial enterprises where power grids with a voltage of 6-10 kW are used. As switchgear, CRU and CSR cells are used, which do not meet modern requirements for reliability and safety. Retrofit is a fast and cheap way to modernize the cells of the KRU, the modernization of RP, RU.

Due to the fact that a large margin of safety was laid in the products, retro CRU of domestic production KXIII, KXXVI, K37, CRU 2-10, K III-Y, KVI-Y, etc. are in operation, In addition to domestic CRU in the territory of the former Soviet Union, retro CRU produced in Poland are in operation, Czech Republic, Germany: CSIM, HL4-7,HG,RSW.

RU data with careful and high-quality maintenance has been well preserved. Retrofit of CSR, NW and CRUcell s, that is, their reconstruction, will increase their service life while maintaining the same functionality.

The need for retrofit of the NCU and CRU cells is due to the fact that the oil switches installed in them have exhausted the resource provided by the manufacturer. In order to increase the reliability and safety of switching, retrofit of the switchgear cells is performed. A cell with a vacuum switch (or gas-operated) is installed, as well as a new microprocessor protection (MPZ), which replaces the existing relay.

Retrofit of CRU cells involves the complete replacement of existing pull-out elements with switches, with new pull-out elements with new switches already installed. Such an update of the cell is not accompanied by lengthy installation work to replace the old switch, therefore it is carried out much faster and does not require a long shutdown of consumers. Quick replacement of roll-out elements is possible due to the same dimensions of parts and connecting connectors, as well as due to well-designed connection schemes of interlocks and secondary switching circuits.

Full compatibility of all parts with the equipment is maintained. During the modernization work, part of the electromechanical components in the cell or cabinet is preserved. The cell design does not change after retrofit

Bryansk Electrotechnical Plant LLC produces equipment for the reconstruction of RP and RU, has the competence and the ability to manufacture retrofit kits for any CRU cells, with switches from various manufacturers as domestic production: BB/TEL (GC "Tavrida Electric"), BB RIM (CJSC "RiM"), BB-RA-10 GC (Radius Automation), VF- 12 (Eltechnika LLC), and foreign manufacturers : Evolis, EasyPactExe (Schneider Electric), VD4, HD4 (ABB).

Types of kits for the modernization of switchgear

For retrofit of electrical distribution devices, the following options are possible:

  • Retrofit of CSR cells — modernization is carried out with the help of adaptation kits and vacuum switches. They are safe to operate and can be easily mounted in prefabricated one-way maintenance chambers.

  • Retrofit of CRU cells — updating is performed by replacing an outdated roll-out element with a new one, in which vacuum or gas-type switches are installed. Due to the unified dimensions and convenient interface, modernization requires a minimum of time and effort.

  • Retrofit NCU – with the help of equipment kits, the service life of existing equipment is increased, maintenance of electrical installations is simplified and the safety of personnel is increased. It becomes possible to automate the work of the NCU.

A comprehensive retrofit is also available. With the help of the supplied kits, both power switches and equipment in the relay compartment, accounting devices, and microprocessor protection are replaced.

Retrofit kits are made to order and delivered to any city in Russia and CIS countries.