TAVRIDA ELECTRIC - Manufacturer and global supplier of medium voltage electrical switchgear equipment

Radial line recloser When a recloser is installed on a radial feeder it automatically clears transient faults and isolates permanent faults. More than one recloser can be installed on a feeder to isolate faults selectively and ensure fewer customers are affected. Loop recloser A loop recloser further improves the reliability of a power supply by automatically reconfiguring a network in the event of a failure.

Thousands of nodding donkey oil pumps were energized through an extensive and highly meshed overhead electrical network. Automated protection was performed only by the feeder CB at the substation. None of the line sectioning breakers were automated, so every single failure on the network required human intervention and led to significant outages. Solution Tavrida Electric installed and commissioned six Rec15 with Rezip* functionality on a single line in just one day. The following project outcomes were achieved Direct savings (outage time reduction → revenue loss reduction) Indirect savings (operation, maintenance, and repair cost reduction) Improvement of power supply quality and reliability Drastically improved network visibility and operator awareness *Rezip is an advanced Fault Detection, Isolation and Restoration (FDIR) algorithm

Tavrida Electric recloser can be used to quickly build costeffective unmanned structure mounted outdoor substation. Provides full protection and automation functionality required at the substation.

Challenge To execute a pilot project at the Energisa distribution network operator in Brazil within a tight time frame. The customer needed to install 23 kV outdoor circuit breakers with protection at a newly erected substation. Solution Tavrida Electric supplied the Rec25 with substation mounting kit to meet the deadline and satisfy the customer’s requirements in terms of protection. The mounting kit was subjected to comprehensive mechanical tests including overweighting, wind load and seismic impact with successful results.

The Tavrida Electric recloser is perfectly suited as the intertie between the renewable generation site and the utility grid. Tavrida Electric's experience with solar applications has led to a variety of solutions that address the nuances of renewable generation requirements.

A utility needed to connect PV plants in the fields of Transylvania to a grid. The biggest challenge was to meet the client’s requirements as well as the National Grid Dispatcher's requirements, whose primary concern is the security of the system. Tavrida Electric’s solution provided a complete, secure and reliable answer to the customer’s needs which exactly meets the imposed utility requirements on energy production. As a result, the customer experienced the following benefits One of the lowest overall costs for MV interconnection switchgear Very fast project implementation (each recloser project has been completed within a month) Reclosers were integrated into the utility’s SCADA without any problems Islanding and Synccheck protection implementation

Air insulated switching module incorporates a Tavrida Electric vacuum circuit breaker with a per phase actuator, housed in a corrosion resistant tank. Six main circuit bushings, made from UVstable polymer, are covered with silicone rubber bushing boots. Each bushing has builtin current and voltage sensors for protection, measurement and indication purposes. The outdoor switching module is equipped with six, high voltage bushings with embedded current and voltage sensors. Current sensing is performed by Rogowski coil sensors. Capacitive sensors are used for voltage measurement in all six bushings. Tavrida Electric manufactures small vacuum interrupters with extremely long mechanical and electrical lifespans. A specially designed axial magnetic field distribution provides even current density over the contact surface and significantly improves the vacuum's interrupting performance.