Reviews

Kamchatskenergo, PJSC has been operating instruments manufactured by SKB EP, LLC: PKV/M5, PKV/M7, MIKO-1, MIKO-2.3, MIKO-21 since 2005.

The advantages of PKV/M5, PKV/ M7 are: the ease of operation, an ability to determine a necessary number of controlled parameters with the required accuracy, the identification of defects without disassembling a circuit breaker, an opportunity to view the results of measurements and graphs of dynamic characteristics, a choice between local and remote triggering and usage of instruments on almost all types of switching equipment. I would also like to note the compact size of the instruments and the presence of a protected case, which is important when transporting and working at a substation.

MIKO-1, MIKO-2.3, MIKO-21 instruments are used to measure the transient resistance of contact connections of switching devices with a voltage of 6-10-35-110-220 kV. The advantages of these instruments include light weight and dimensions, a durable case, sufficient current for carrying out necessary measurements, autonomous power supply (MIKO-1), the ease of use.

Basing on our own operational experience, Kamchatskenergo, PJSC recommends these instruments to all energy organizations and enterprises.

V.V. Skvortsov
The first deputy of General Director – chief engineer

The electrical laboratory department of Primorskaya GRES, LLC has been used milli-ohmmeter MIKO-9A for the electrical equipment diagnostic since 2021.

With a help of the instrument we measure the ohmic resistance of windings in transformers and autotransformers with a voltage up to 500 kV and a power up to 250,000 kVA, electric motors of various power with a voltage up to 6 kV. Moreover, we demagnetize the magnetic system of transformers, measure the transient resistance of contacts and bolted joints.

The instrument is convenient due to its low weight and small size. A manipulating rod with special cables was purchased together with the instrument. In many cases, the use of the manipulating rod allows you to get rid of an autolift.

The managers of Primorskaya GRES, LLC thanks SKB EP, LLC for manufacturing the necessary instrument for enterprise and hopes for the emergence of new developments. We recommend to other companies showing interest in the instruments produced by your company.

E.S. Antovshchuk
Chief Engineer

Currently, two PKV/M7 instruments have been operated since 2019 in the electrical department of ENGINEERING CONSTRUCTION SERVICE, LLC, in Bratsk branch. Oil circuit breakers MG-10, MG-110, MG-20, MGU-020 are analyzed by these SKB EP`s instruments. The instruments are quite convenient to use, easy to transport and carry in hands, also they are compact and have a relatively low weight. It is possible to accurately determine circuit breaker time and speed characteristics of closing and opening, pressing and moving parts travel. A defect while closing MG-110 has revealed by PKV/M7 (speed change, braking). The usage of PKV/M7 has great advantages in comparison with old methods of circuit breakers diagnostic. We can confidently recommend using of PKV/M7 instrument to other organizations for electrical equipment diagnostic. It is worth noticing "TRADE-IN" promotion that can provide 15-20% discount for new instruments.

D.M.Marakanov
Head of the branch

Nowadays, specialists of an electrical laboratory of Udokan copper, LLC operate the following instruments, which are manufactured by SKB EP, LLC: MIKO-9A, MIKO-21 and PKV/M7.

These instruments have been used since 2020 when conducting a comprehensive diagnostic of power and measuring transformers, high-voltage circuit breakers and disconnectors.

We would like to note the universality of MIKO-21, extensive functionality when measuring parameters on electrical installations of 4-220 kV: for example, measuring the contact resistance of metallic bounding equipment with an earthing system, measuring the contact resistance of a contact system of circuit breakers with a voltage class of 6-10 -35-220 kV, measuring the contact resistance of bolted joints of 4-220 kV. Speaking about a specified functionality of the instrument, advantages are revealed both in terms of the cost (instead of several instruments we use one) and in terms of labor costs reducing for carrying out work.

While using MIKO-9A, the following advantages were found: the ability to measure contact resistances of circuit breakers contact system 6-220 kV, measure the ohmic resistance of windings of power and measuring transformers of 6-220 kV with an AUTO 3Ph mode. These advantages can significantly reduce the time for preparing and performing measurements in comparison with instruments of previous generations and produced by other manufacturers.

The instrument PKV/M7 is a reliable device for measuring parameters of circuit breaker VEB-UETM-220 of 10-35 kV manufactured by Elmash, LLC from Yekaterinburg.

Having gained experience in the operation of instruments manufactured by SKB EP, LLC, we can confidently recommend these products for conducting a comprehensive diagnostic of power equipment.

A.V. Sevostyanov
Chief power engineer

Currently, a milli-ohmmeter MIKO – 7M(A) is operated in the electrotechnical laboratory (ETL).

This equipment is used for conducting a comprehensive diagnostic of electrical equipment at substations, windings of power and measuring transformers, electric motors, generators, linear compensators and other equipment with high inductance. The design of this instrument is characterized by its lightness and convenience. I would also like to note the ergonomics of interface, automatic settings and systematization of measurement results.

When operating the instruments some mismatches were revealed between actual and nominal values of the power transformer windings divergence.

MIKO – 7M(A) allowed us to expand the functionality of ETL.

During the tests, the instrument showed its reliability, stability of operation, ease of use.

Our company recommends using this equipment as a quality guarantee.

Akhmetov D.K.
Director of ETL TDS LTD, LLP