References

The training center of OAO IDGC of Urals (Yekaterinburg) held a professional skills competition in the WorldSkills methodology in the competence “Maintenance and repair of relay protection and automation equipment” between 08.08.2022 and 12.08.2022.

I would like to thank you for your help in equipping the championship and also to thank Aleksandr Alekseevich Krasnov, Digital Substation sector engineer, for his contribution to the technical support of competition stages.

The training was carried out by highly-qualified trainers from EKRA Training Center under realistic operation conditions of microprocessor relay protection devices. The trained staff of the branch's Relay Protection, Automation and Metrology Service noted the trainers' high qualification, clear and professional answers, their instructions for academic process management, and the quality of professional knowledge acquired by the staff.

EKRA equipment meets all technological requirements of production and demonstrates high reliability and serviceability. The commissioning work was carried out competently in the shortest possible time, followed by briefing on equipment operation.

The insulation monitoring system by EKRA Ltd allowed to meet the commissioning deadlines and to ensure correct operation of equipment at Grozny TPP. Together with EKRA specialists, we used the EKRA insulation monitoring system to quickly and efficiently detect not only feeder connections, but also their locations, resulting in their prompt elimination.

I would like to note that throughout the life of EKRA Ltd equipment in our grids, the Adjustment and Service Department specialists provided timely, personalized support. Your team's professionalism and in-depth business knowledge help reduce work time and ensure reliable operation of the power system.

We would like to thank you for the prompt and high-quality replacement of EKRA insulation monitoring system installed on DC boards DCB-21 and DCB-22. Our special thanks go to Igor Aleksandrovich Galkin for his professionalism. The work was done to the highest technical standard.

We should mention the highly-qualified workmanship of your company's specialists, who have shown a high level of professionalism and excellent practical and theoretical knowledge. All the work was done well and in due time.

Thanks to the well-coordinated work of your specialists, the adjustment and commissioning of EKRA software & hardware were successfully completed in a very short time. High qualification and professionalism of the engineers performing work at the 330 kV Starorusskaya substation allowed to implement remote operation of the controlled shunting reactor (CSR) from SO UES JSC control center for the first time and to promptly eliminate any deficiencies at the facilities of FGC UES PJSC Branch, Novgorod MES Company.

The benefits of using your IEDs include reliability, easy operation and configuration, clear and user-friendly interface, and the capacity to organize a utilities power management system based on these devices. The IED functions provide all necessary relay protections for electrical equipment, as required by current regulations.

Polyus Magadan JSC expresses its gratitude to EKRA Ltd for the attentive and decent attitude during a wide range of adjustment works carried out to the highest standard and expertly.

Zatonskaya TPP would like to thank the employees of your company for the timely resolution of issues arising during equipment operation, prompt and competent personnel actions, high quality of work, attentiveness and decent attitude when carrying out work at our facility.

Beloyarsk NPP would like to thank the Adjustment and Service Department for the excellent quality of a wide range of adjustment works on relay protection cabinets at our facility. The specialists at Beloyarsk NPP are pleased with the competent and professional staff in your department.

Balakovo NPP expresses its gratitude to EKRA Research & Production Enterprise for professional adjustment with supervision and commissioning of microprocessor protection cabinets for 220 kV OHLs, high-quality service, promptness, and timely assistance in resolving technical issues.

Razrez Mairykhsky Coal Company expresses its gratitude for the high-quality and timely development, delivery, and adjustment of the advanced equipment system at the 35/10 kV Mairykhskaya substation.

During the entire period of operation, EKRA insulation monitoring system and relay protection devices had no malfunctions. All EKRA insulation monitoring system implementation work was carried out with the direct participation of EKRA specialists. Equipment adjustment with supervision and commissioning were performed to the highest standard and within the allotted time frame.

Ust-Khantay HPP expresses its gratitude to the employees of EKRA Adjustment and Service Department for their qualified adjustment of cabinets for start-up systems PK-1 — PK-4, for timely and prompt resolution of issues during equipment operation, and for excellent quality of their work.

All the work was carried out at a high professional, technical, and organizational level. Our collaboration has proved their reliability and professionalism, the state-of-the-art solutions they offer, and the quality of work they do.

A five-year actuation analysis shows that the protections operate properly in case of any short-circuits. The adjustment of EKRA relay protection cabinets is extremely easy and takes considerably less time than electromechanical devices. The operational maintenance of these cabinets is also easy.