Kursk NPP the branch of Rosenergoatom Concern, JSC
At the present time in high-voltage test, measurements and diagnostic laboratory of the Kursk NPP electrical department there are two MIKO-2.3 devices in operation.
A complete package of documents, that was included in the complete set of devices, made it possible to register them with our metrology center without any problems.
During almost daily operation since January 2019, MIKO-2.3 didn’t have serious shortcomings and low-quality that could make the use of devices impossible have not been identified.
The main advantages of the MIKO-2.3 devices are the ease of use and the absence of errors in assembling the measuring circuit to compare with the traditional method of measuring ohmic resistance by the voltmeter-ammeter method. Digital indication of the measurement result eliminates the subjective factor when the operator senses the readings from the pointer indicator and the errors when calculating the result. Low weight, compactability, absence of moving and fragile details in the device simplifies the requirements for transportation on the territory of the outdoor switchgear and manual movement along the main building of the NPP.
During the working process with the devices on different types of NPP power equipment (from 0.4 kV and 6 kV switchgear equipment, 400 kVA power transformers, electric motors of all capacities to 630 000 kVA transformers, and 330 kV and 750 kV outdoor switchgear power equipment), the staff of our laboratory had several suggestions for improvement characteristics of MIKO-2.3.
Kursk NPP would like to thank SKB EP for the manufacture of high-quality devices and for the interest in the experience of its operating. We also look forward to the new developments that will be interesting to the specialists of electrical laboratories of various enterprises.
Head of the laboratory for high-voltage tests, measurements and diagnostics
Kanskaya CHPP, JSC
The electrotechnical laboratory of Kanskaya CHPP, JSC has used the following devices of SKB EP, LLC in operation: MIKO-1 (since 2009); PKV/M7 and PUV-regulator (since 2016).
These devices are used to measure and diagnose oil circuit breakers, vacuum circuit breakers; load-break switches; measurement of transient resistances of contact connections of disconnectors, busbars.
MIKO-1 microohmmeter has optimal overall dimensions, easy and convenient to use. This device is equipped with a built-in battery, which makes it easier to use it even on the high objects. The disadvantage of this device is the inability to work while charging and the inability to connect power bank when working in the field.
[Manufacturer note]: MIKO-1 was developed more than 20 years ago, when the ability to connect to a power bank, as well as the ability to work when charging from mains, weren’t so widespread and necessary. These disadvantages are eliminated for our more modern microohmmeters MIKO-10 and MIKO-21. At the same time, we also would like to note that the built-in battery is safer from the point of view of the device's safety than the external one, and makes it possible to conduct diagnostics and measurements even when the device can’t be connected to the network. If your MIKO-1 runs out of power quickly, we recommend you to replace the battery in the device by yourself (we can send you instructions).
We also equipped the crocodile-type measuring clamps with measuring forks, which allows to take measurements faster.
[Manufacturer note]: As regards the additional supply of the measuring terminals with measuring plugs by yourself, we would like to note that it may affect the condition of the cables and the accuracy of the measurement results. In the additional configuration of MIKO-1 (you can learn more about them in the section Complete set) there are measuring cables with with spring loaded needle-type contacts (art. SKB018.13.00.000 and SKB018.17.00.000), which can be used for measuring transient resistances in hard-to-reach areas of any objects with painted or dirty surfaces.
The devices PKV/M7, PUV-regulator also proved its great quality. They are convenient and easy to use, and what is more, they have high measurement accuracy. The devices allow you to measure a number of important parameters in one cycle (time diversity, compression, speed, etc.), which significantly cuts the processing time and assessment of the technical condition of the switch. The complete set of the device is sufficient for carrying out work on the equipment operated by us.
The devices of SKB EP LLC have proven themselves positively in terms of operation, accuracy and speed of measurements. Their use can significantly save time for diagnostics of electrical equipment and improve the quality of service.
We express our gratitude to SKB EP LLC for high-quality and reliable products and recommend these devices to organizations engaged in the repair and operation of equipment.
V. N. Vladimirov
Southern Electrical Grids the branch of Magadanenergo, PJSC
Magadanenergo, PJSC, informs you that MIKO-1 device has been successfully used in Southern Electrical Grids for more than 10 years. During operation MIKO-1 has proven itself positively due to its simple operation, compact design, light weight, and special carrying case. This device is convenient to use and can be used directly at the installation place of electrical equipment.
High quality of assembly as well as accuracy of measurements of the device MIKO-1 allowed us to improve the quality of control for the required parameters during repair and service operations.
L. S. Kolbina
Acting Deputy chief engineer –
Head of the Department of operation, repair and technical re-equipment of electric networks
Tulenergo the branch of IDGC Centre and Volga region, PJSC
Since 2006, Tulenergo the branch of IDGC of Center and Volga region, PJSC, has been using devices PKV/M6, PKV/M7, MIKO-1 and PKR-2M manufactured by SKB EP, LLC.
PKV/M7 and MIKO-1 have become irreplaceable assistants in diagnostic of high-voltage switches the following types: VMG-133, VMP-10, VK-10, VBM-10-20, S-35, VT-35, VGBE- 35, MKP-110, VGT-110. PKR-2M is used to accurately and quickly assess the state of the switching device of power transformers.
All devices are reliable, convenient and easy to use thanks to the clear interface and small dimensions.
We express our gratitude to SKB EP, LLC for the production of high-quality and also we recommend devices of the company to organizations involved in the installation, debugging, operation and repair of electrical equipment.
Commissioning and testing engineer of Diagnostic Service
Odinets A. A.
Acting head of Diagnostic Service
Kurskenergo the branch of Rosseti Centre, PJSC
2 measurement devices manufactured by SKB EP, LLC are used in the Western section of the diagnostics service of Kurskenergo the branch of Rosseti Centre, PJSC: PKR-2M transformer OLTC analyzer and MIKO-8M milliohmmeter. PKR-2M device has been used since 2018, and MIKO-8M device has been used since 2019.
These devices are used for diagnostics of power and measuring transformers of voltage 110, 35, 10 kV (MIKO-8M) and OLTCs of power transformers of 110, 35 kV (PKR-2M).
In practice, both devices have proven themselves from the best side: compact, robust case, convenient and easy-to-use interface, the ability to select the necessary schemes and groups of winding connection. The ability to create and maintain an archive, including the ability to enter factory test data that allows you to carry out the primary analysis of diagnostics results directly at the workplace. High-quality of test cables and clamps, the possibility of adjusting the scope of the complete set. All this greatly reduces the time and labor costs when carrying out equipment diagnostics in comparison with the previously used fleet of devices. It should also be noted that there is software for analyzing and storing diagnostics results on a PC. Furthermore, there is the ability to obtain the necessary information or consultation directly from the device developers.
The use of PKR-2M and MIKO-8M devices manufactured by SKB EP, LLC brought the diagnostics of power and measuring transformers to a new, higher quality level.
PKR-2M and MIKO-8M devices manufactured by SKB EP, LLC are recommended to be used by enterprises and companies engaged in the repair and diagnostics of power and measuring transformers.
Head of the Western Section of the Diagnostics Service