SKB EP practical training in Kazan

In the beginning of November 2018 SKB EP specialist took part in the training organized by our official dealer SOUZ-PRIBOR, LLC in Kazan, Russia. Representatives of 4 companies engaged in production of high-voltage equipment took part at the event. The training was organized for technical specialists responsible for operating, repair, installation and adjustment of high-voltage switching equipment. SKB EP specialist made a report about modern methods of diagnostics of HV circuit-breakers and transmission lines.

Presentation of all the SKB EP instruments was included in the training program. Moreover, our specialist presented PKV/M17 - a new development of the company. This is a next-generation instrument, which provides comprehensive diagnostics of HV circuit-breakers from 6 to 750 kV of all types by Soviet, Russian or foreign production (Siemens, Areva, ABB, Alstom, etc.). PKV/M17 has following features:

• provides control of time, travel and speed characteristics of high-voltage circuit-breakers, isolating and short-circuiting switches simultaneously per 3 poles (up to 2 breaks per a pole), or per one pole (up to 6 breaks per a pole);
• has built-in microohmmeter to measure transient resistance of high-voltage circuit breaker contacts using cable poles;
• has built-in measurement templates for specific circuit-breaker models;
• has a unique method that can detect nascent defects at an early stage. This feature increases high-voltage equipment lifetime by 1.5 times and reduces the costs for equipment repair by 30%;
• implements express analysis of a high-voltage circuit breaker condition according to the first-trip test.This feature has never been previously presented among instruments produced in Russia;
• makes all calculations automatically and shows them in the form of graphs and tables.

Training participants have shown great interest in this instrument and asked a lot of questions. One of them was about the launch date, which is scheduled for 2019.

Training participants also showed a great interest to the instruments for electric resistance measurement, such as MIKO-9 milliohmmeter and MIKO-21high-precision microohmmeter.

Technical specialists noted that MIKO-9 has a wide resistance range from 10 µΩ up to 30 kΩ and an ability to measure electric resistance in different modes, both in inductive and non-inductive circuits. Furthermore, the instrument has several distinctive functional features:

• ability to connect to three transformer phases simultaneously and to measure the resistance with automatic switch;
• AUTO demagnetization mode;
• heat run test
• OLTC in-place check mode (DRM test), etc.

Specialists noted, that MIKO-21 has a built-in database of passport resistance values of the contacts of switches. This feature enables automatic comparison of the measured resistance to the passport one when the circuit breaker brand is specified. One more important characteristic is an approach to the implementation process. Measurement can be started by circuit closing or by specified period of time, which is especially convenient when there is no such a possibility to press the START button.

After the theoretical part of the event every participant had an opportunity to study the interface of MIKO-9, MIKO-21 and MIKO-10, and ask questions on the practical usage of the instruments. MIKO-10 was especially interesting to the training participants due to the combination of weight, dimensional characteristics and to a special mode for express measurement of transient resistance.

We would like to thank the organizers of the event for the opportunity of direct interaction with the specialists of the Tatarstan Republic Electric Grid Complex.

If you are interested in our practical trainings, you can leave a request on the company's website and our specialists will contact you as soon as possible.