Vorkutinskiye thermal power plants, LLC
The electrical laboratory of Vorkutinskaya TPP-2 Vorkutinskiye TPP, LLC T Plus, PJSC has in its instrumental and technical base the following devices manufactured by SKB EP, LLC:
- MIKO-1 micro-ohmmeter that is used since 2005;
- MIKO-10 micro-ohmmeter that is used since 2017;
- PKV/M5N high-voltage circuit breaker analyzer that is used since 2006 with an angular movement transducer DP21 and a linear movement transducer DP12;
- PKV/M7 high-voltage circuit breaker analyzer with a PUV-regulator device that are used since 2018, with an angular movement transducer DP21 and a linear movement transducer DP12.
With the help of micro-ohmmeters, electrical laboratory personnel measures DC resistance of contact connections, and PKV/M5N and PKV/M7 devices are actively used to measure the speed and time parameters of circuit breakers of 6, 35 and 110 kV voltage classes.
Micro-ohmmeters are convenient to use due to their autonomy and mobility. PKV/M5N device, despite its long service life, is relevant during the diagnostic of high-voltage circuit breakers (due to the presence of linear and angular movement transducers in the complete set), but, due to moral aging and replacement with new analogues, the device cannot be supplemented with new components. The new PKV/M7 device is supplemented with all the necessary spare parts, is modern, mobile, accurate and, based on this, is more in demand by electrical laboratory specialists.
As a result of the operation of devices manufactured by SKB EP, LLC by the personnel of Vorkutinskaya TPP-2, we can say about the reliability and high-quality operation of the above-mentioned devices and express a desire to continue interaction with specialists of SKB EP, LLC on technical and commercial issues.
Tver Carriage Building Plant, JSC
On behalf of the SSD of TVZ, JSC MW in Moscow we would like to express our sincere gratitude and deep appreciation to SKB EP, LLC for providing digital and modern measurement equipment! Since February 2021, our department has been using MIKO-9A milliohmmeter.
The milliohmmeter is used for diagnostic and detection of turn-to-turn short circuits of traction electric motors and network reactors of electric trains of the EG2Tv "Ivolga" series.
Due to MIKO-9A compactness and lightness, as well as the presence of a built-in battery and the ability to measure the resistance of the conductor under inductive load, the device can be used in space-limited conditions allowing to detect malfunctions without dismantling the trolleys from the car.
During MIKO-9A operation, it was possible to identify a malfunction in 3 traction electric motors with a capacity of 300 kW and two network reactors. And these defects could not be determined by the available measurement instruments of our division.
PD Northern Electric Networks the branch of Rosseti Tomsk, PJSC
The branch of Rosseti Tomsk, PJSC has been using PKV/M7 circuit breaker analyzer manufactured by SKB EP, LLC since 2019.
With the help of this device, we carry out diagnostic of oil circuit breakers VMP(E)-10, VKE-10, VMT-110, MKP-110.
PKV/M7 device has proven itself on the positive side. The device is very convenient and easy to use, thus allowing to reduce the labor costs of repair personnel. The device measures important parameters with high accuracy (time difference, compression, speed, etc.).
We express our gratitude to SKB EP, LLC for the production of high-quality and reliable products and recommend their use to organizations engaged in the operation, diagnostics and repair of electrical equipment.
SKTB Granit, LLP
Currently, in SKTB Granit LLP, we use MIKO-10 micro-ohmmeter manufactured by SKB EP LLC in the amount of 1 piece since 2019.
With the help of MIKO-10, we mainly check the quality of the resistance of the contact groups of protective and functional grounding on newly installed equipment in accordance with the requirements of GOST.
Before MIKO-10 purchase, we have been using F-415 micro-ohmmeter. The weight of this product is about 7-8 kg, which was a great inconvenience in operation. It is much more convenient to work with compact micro-meter MIKO-10 that can be easily fixed on the arm.
In our work, we mostly often use the "Single" measurement mode. We do not check the high-voltage equipment with this device.
With the help of MIKO-10, it is difficult to meet the requirements of GOST 17441-84 "Contact connections. Acceptance rules and test methods", as well as to check the functional grounding of the installed equipment, on the body of which there are no connectors. That is difficult to be performed as MIKO-10 is supplied in the standard complete set only with test cables with a crocodile type clamps.
But for such measurements, a test cable with double hand spikes together with a test cable with a crocodile clip is more suitable.
Here is our offer: to complete the device’s standard complete set with two types of test cables. We think that the price of a test cable with double hand spikes will be small.
[Manufacturer note]: Standard complete set of MIKO-10 includes a cable that is most often used on various types of objects. Unfortunately, cables with double hand spikes are not used so often, so they are included to the additional complete set of the device and are available on request. For more information about the entire list of components, see the Complete set section on MIKO-10 page.
The economic effect of using MIKO-10 micro-ohmmeter was not calculated, but the percentage of detecting low-quality compounds increased significantly.
The device is excellent. We recommend other organizations to use it.
Kambaratinskiye HPP the branch of Electric stations, JSC
MIKO-2.3 devices have been in operation at our enterprise since 2018. During the operation, devices have proven themselves as reliable, multifunctional, compact. The device is convenient to carry out measurements, and it also has the function of automatic recalculation of measurement results. MIKO-2.3 device is used at Kambaratinskiye HPP for contact resistance measurements on disconnectors of RGN-110 type, SF6 circuit breakers of VGT-110 type, current transformers, voltage transformers, power transformers and electric motors of all capacities. No malfunctions were detected during the use of the device.
The disadvantage of MIKO-2.3 is the rapid discharge of the battery when using the microohmmeter mode.
[Manufacturer note]: The rapid battery discharge in this mode is explained by the supply of an operating test current of up to 1,000 A. it is also worth mentioning that the battery is fully charged in 5 minutes.
Using this device, we have reduced the total amount of time spent for measurements and tests.
Taking into account the above, we can recommend this device for specialists of electrical laboratories of various enterprises.