Multipurpose low / high resistance meter MIKO-2.3

Certificates

  • Safety Test Certificate IEC 61010-1:2001
  • Russian State Register Certificates
  • Declaration of Conformity of the Customs Union
  • Russian Register of Innovative Products

Operates in 4 modes: micro-ohmmeter, milli-ohmmeter, kilo-ohmmeter and thermometer

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Multipurpose instrument that performs all tasks regarding resistance measurement in high-voltage equipment

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Micro-ohmmeter mode: contact resistance measurement at maximum current of 1,000 А in the range 1 μΩ - 0.1 Ω

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Milli-ohmmeter mode: winding resistance measurement within the range 100 μΩ - 1 kΩ

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Kilo-ohmmeter mode: resistance measurement within the range 0.1 kΩ - 300 kΩ

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Thermometer mode: measurement of temperatures of different environments within the range -20°C to +120°C

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Automatic self-tuning for the measurement object

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Self-contained power supply, small dimensions and weight

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Test cables of unique and ergonomic design

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MIKO-2.3 is a portable mini-laboratory allowing performing of all tasks connected with resistance measurement in electrical equipment as this instrument operates in four modes: micro-ohmmeter, milli-ohmmeter, kilo-ohmmeter and thermometer.

Watch detailed video-reviews about MIKO-2.3 Multipurpose low / high resistance meter up above or on our YouTube. Watch videos and subscribe.

All types of electrical equipment (transformers, electrical machines and electrical switching devices) require different means for full-rate diagnostic. However, in case of direct-current resistance measurement the multipurpose instrument MIKO-2.3 can be used.

Resistance range for the above listed equipment is wide and resides within the values from 10-3 to 600А and more.

For monitoring of a transformer or a sole circuit-breaker, for instance, a micro-ohmmeter, milli-ohmmeter, thermometer and even kilo-ohmeter are needed. It means that you have to use three or even four instruments one at a time which is not usually convenient. Increasing of the number of instruments increases not only the total cost of a set, but also its weight which complicates transportation of equipment to remote facilities.

Micro-ohmmeter mode is designed for measuring contact resistances of any switching devices as well as collapsible and non-collapsible contact connections in the range within 1 µOhm - 105 µOhm.

In addition, this mode allows you to take into account the presence or abse­nce of a current transformer in the measured circuit:

  • sub-mode "CT-no";
  • sub-mode "CT-yes";
  • sub-mode "CT-yes, Tmax".

But the main requirements for micro-ohmmeters are to provide a rather large operating current, which is able to burn through oxidized films. They are formed on the contacts and give a significant inaccuracy in the measurement of resistance.

MIKO-2.3 surpasses all foreign and domestic micro-ohmmeters. The closest micro-ohmmeter in terms of characteristics at a current of up to 500 A has a mass of 7.5 kg and mains charge. MIKO-2.3 with a mass of only 2.7 kg gives a current of up to 1000 A, and also runs on a capacitor bank.

In the micro-ohmmeter mode, the device has an archive for saving 62 results with the values ​​of the measured resistance. Archive is designed to store, view, delete measurement results, as well as to transfer them to a PC.

To transfer data to a PC and maintain a measurement archive, an RS-232 cable, a special adapter (optional) and the MIKO measurement archive program are used.

Milli-ohmmeter mode is designed for measurement of direct-current resistance in circuits with high inductance (transformers, electromagnets etc.) within the range of 100 μΩ - 1 kΩ.

Two submodes are used here: measurement of one-phase and three-phase windings. Besides, MIKO-2.3 has a function of automatic recalculation of resistance measurement results for a three-phase winding:

  • calculation of relative deviations of resistance values of moving coils between each other;
  • recalculation of resistance values of moving coils connected according to the triangle scheme into resistance values of phase windings;
  • recalculation of resistance values of moving coils connected according to the star scheme into resistance values of phase windings;
  • recalculation of a winding resistance measured at current temperature T into resistance at base temperature Ɵ with due account for the winding material.

The appliance has an archive for storage of results of changing the "milli-ohmmeter" mode that allows for storing and reading 63 results for electrical resistance of one-phase windings and 21 result for three-phase windings.

A special program by the manufacturer is used for transmission of data to a computer and for keeping archive records of measurements on a PC.

Kilo-ohmmeter mode is designed for measurement of resistance of ballast, shunt, additional and other resistors with induced voltage up to 5 kV, as well as without induced voltage within the range of 0.1 kΩ - 300 kΩ.

Thermometer mode is designed to measure the temperature of oil, water, air and other non-aggressive environments within the range from -20°C to +120°C.

Identification of each of the four modes is automatic by connecting the corresponding test cable.

Due to a combination of functional and mass-dimensional parameters (200 x 151 x 68 mm; 2.7 kg) MIKO-2.3 achieves cutting edge innovation, while the above features and self-contained power supply  ensure full portability and high mobility of the instrument over the vast territory of substation or facility.

The ability of MIKO-2.3 to supply current up to 1000A is realized due to the operation of a condenser battery. The presence of such type of a battery provides full charging of the instrument from 0% to 100% in 5 minutes! Nevertheless, rapid discharge also occurs in some modes of the instrument operation, that determines the dependence of MIKO-2.3 on electrical network. In order to eliminate this nuance, SKB EP has developed an external battery of a modern lithium-ion type which has received the symbol – power bank. The main task of the power bank for MIKO-2.3 is to maintain the charge of its built–in condenser battery to increase the operating time of the instrument and raise the number of measurements without connecting to the network - more details at the link.

Versatility and weight of the appliance are especially critical for organizations responsible for facility commissioning that have to constantly carry heavy weights of instruments and equipment for significant distances.

MIKO-2.3 instrument is easy to use and maintain, reliable and resistant to electromagnetic field influence.

MIKO-2.3 input cables are equipped with crocodile clips with G-cramps of unique design that has no analogues by other manufacturers of instruments. This design ensures quick and faultless connection to an object that excludes errors of measurement of small resistance values, and ensures reliable contact even in case of oxygenated surfaces of an object.

Besides, there is an option of a four-clamp connection of the instrument cables to circuit-breaker bushings and to transformers through external potential contacts.

Specifications Value
Resolution 0.1 μΩ
Measurement display resolution 4 digits
MICRO-OHMMETER MODE -
Resistance range 1 μΩ - 0.1 Ω
Accuracy ±0.2 %
Test current output 10 - 1,000 А
Measurement time -
submode "CT-no" < 2 sec
submode "CT-yes" < 30 sec
submode "CT-yes Tmax" < 20 sec
MILLI-OHMMETER MODE -
Resistance range 100 μΩ - 1 kΩ
Accuracy ±0.2 %
Test current output 0.5 - 5 А
Measurement time from 10 to 900 sec
KILO-OHMMETER MODE -
Resistance range 0.1 kΩ - 300 kΩ
Accuracy ±0.5 %
Measurement time < 3 sec
THERMOMETER -
Temperature measurement range -20°C - +120°C
Accuracy ±1.0°C
- -
Power supply (built-in battery) Condenser
Battery charging time 5 min
Power supply (Power bank) Lithium-ion
Charge time for ZU-2A (Power bank) 6 hrs
Operation time with the use of Power bank ZU-2A in the milli-ohmmeter mode 2.5 hrs
Number of measurements with the use of Power bank ZU-2A in the micro-ohmmeter mode 400 pcs
Built-in memory 100 measurements
PC connection RS-232 and USB (when using adapter)
Display Alpha-graphic, 6 x 2.5 cm
Power consumption < 60 W
Power supply (mains voltage) 100-242 V AC, 47-63 Hz
100-300 V DC
Dimensions 200 x 151 x 68 mm
Instrument weight 2.7 kg
Environmental protection IP20
Operating temperature range -20°C - +40°C
Warranty period 13 months
Recommended calibration interval 1 year
Interface and user manual language English

Standard complete set

Photo Item, Index Application
Main instrument MIKO-2.3
  • Main instrument MIKO-2.3
  • 025.01.00.000
  • Main instrument MIKO-2.3
  • 025.01.00.000

Instrument, a stand for the instrument, and documents: User Manual and Log book.

Charging unit CU-1A
  • Charging unit CU-1A
  • 023.20.00.000
  • Charging unit CU-1A
  • 023.20.00.000

For charging the built-in condenser battery of the instrument during resistance measurement on electrical equipment.

Micro-ohmmeter test cable K162
  • Micro-ohmmeter test cable K162
  • 023.02.00.000-01
  • Micro-ohmmeter test cable K162
  • 023.02.00.000-01

Micro-ohmmeter test cable 1 x 2.3 m + 1.1 m with C-clamps, jaw up to 80 mm. 900А. Weight is 2.12 kg.

Potential spring-loaded contact (2 pcs.)
  • Potential spring-loaded contact (2 pcs.)
  • 023.21.00.000/-01
  • Potential spring-loaded contact (2 pcs.)
  • 023.21.00.000/-01

For connection to the input pin. Included into the complete set of the K162 measuring cable.

Potential probe (2 pcs.)
  • Potential probe (2 pcs.)
  • 023.22.00.000/-01
  • Potential probe (2 pcs.)
  • 023.22.00.000/-01

For connection to the input pin. Included into the complete set of the K162 measuring cable.

Milli-ohmmeter test cable K233
  • Milli-ohmmeter test cable K233
  • 023.07.00.000-02
  • Milli-ohmmeter test cable K233
  • 023.07.00.000-02

Milli-ohmmeter test cable 1 x 6m + 2m with input pin diameter up to 37 mm. Jaw up to 50 mm.
For resistance measurement of power transformer windings with the voltage of 110 kV and less under direct current.

Kilo-ohmmeter test cable K322
  • Kilo-ohmmeter test cable K322
  • 023.06.00.000-01
  • Kilo-ohmmeter test cable K322
  • 023.06.00.000-01

Kilo-ohmmeter test cable 1 x 3.4m + 2.1m.
Jaw up to 50 mm.
For measurement of additional, shunt and dividing resistances in case of presence of induced voltage for them.

Thermometer with cable K411
  • Thermometer with cable K411
  • 023.08.00.000
  • Thermometer with cable K411
  • 023.08.00.000

Thermometer cable 1 x 1.8m. For temperature measurement of oil, water and air.

Mains extension cable
  • Mains extension cable
  • 023.16.00.000
  • Mains extension cable
  • 023.16.00.000

Mains cable 1 x 11 m. Weight 0.68 kg.

For charging device connection when placing the instrument on the input of the high-voltage circuit breaker.

RS-232 interface cable
  • RS-232 interface cable
  • 023.11.00.000
  • RS-232 interface cable
  • 023.11.00.000

Interface cable 1 x 1.5m. For PC connection and data transfer.

Shunt
  • Shunt
  • Shunt

Type: 75ShSM M3 (75ШСМ М3). For functional check in micro-ohmmeter and milli-ohmmeter modes.

Zero resistance standard
  • Zero resistance standard
  • 023.15.00.000
  • Zero resistance standard
  • 023.15.00.000

Accuracy check of the zero point on the resistance scale. The value is 0,000 µOhm.

Instrument transportation bag
  • Instrument transportation bag
  • 123.02.01.000
  • Instrument transportation bag
  • 123.02.01.000

Convenient and durable bag, providing additional mobility during the operation of the device.
Weight 0.3 kg.

Bag for a cable set
  • Bag for a cable set
  • 123.02.02.000
  • Bag for a cable set
  • 123.02.02.000

Convenient and durable bag for transporting cables and accessories.
Weight 0.85 kg.

Additional complete set (on order)

Photo Item, Index Application
Charging unit ZU-2A
  • Charging unit ZU-2A
  • 025.21.00.000
  • Charging unit ZU-2A
  • 025.21.00.000

The unit functions as Power bank for the charge maintenance of the built-in condenser battery of the instrument. Battery charge maintenance time is up to 2.5 hours during continuous measurement in the milli-ohmmeter mode, and for not less than 400 measurements in micro-ohmmeter mode.

Micro-ohmmeter test cable K161
  • Micro-ohmmeter test cable K161
  • 023.02.00.000
  • Micro-ohmmeter test cable K161
  • 023.02.00.000

Kelvin C-clamp test cable (jaw up to 80 mm) 1 x 0.9m + 0.9m. Maximum current up to 1000A. Weight is 2.3 kg.

Micro-ohmmeter test cable K163
  • Micro-ohmmeter test cable K163
  • 023.02.00.000-02
  • Micro-ohmmeter test cable K163
  • 023.02.00.000-02

Micro-ohmmeter test cable (jaw up to 30 mm) 1 x 4.5m + 1m with crocodile clip and G-cramp. Maximum current up to 500A.

Micro-ohmmeter test cable K164
  • Micro-ohmmeter test cable K164
  • 023.02.00.000-03
  • Micro-ohmmeter test cable K164
  • 023.02.00.000-03

Micro-ohmmeter test cable (jaw up to 30 mm) 1 x 3.8m + 1.7m with crocodile clip and G-cramp. Maximum current up to 500A.

For resistance measurement of oil high-voltage circuit breakers.

Micro-ohmmeter test cable K165
  • Micro-ohmmeter test cable K165
  • 023.02.00.000-04
  • Micro-ohmmeter test cable K165
  • 023.02.00.000-04

Micro-ohmmeter test cable (jaw up to 30 mm) 1 x 10m + 1m with crocodile clip and G-cramp. Maximum current up to 500A.

Micro-ohmmeter test cable K151
  • Micro-ohmmeter test cable K151
  • 023.03.00.000
  • Micro-ohmmeter test cable K151
  • 023.03.00.000

Kelvin Clamp test cable, jaw up to 50 mm. Current up to 200A. Length 0.9m. + 0.9m. Weight is 1 kg.

Micro-ohmmeter test cable K152
  • Micro-ohmmeter test cable K152
  • 023.03.00.000-01
  • Micro-ohmmeter test cable K152
  • 023.03.00.000-01

Kelvin Clamp test cable, jaw up to 50 mm. Current up to 200A. Length is 2.27m. + 0.9m. Weight is 1.78 kg.

Micro-ohmmeter test cable K153
  • Micro-ohmmeter test cable K153
  • 023.03.02.000
  • Micro-ohmmeter test cable K153
  • 023.03.02.000

For resistance measurement of: air high-voltage circuit breakers and SF6 high-voltage circuit breakers.

Current up to 200A. Jaw up to 30 mm. Length 5.0m. + 5.0m.

Micro-ohmmeter test cable K121
  • Micro-ohmmeter test cable K121
  • 023.09.00.000
  • Micro-ohmmeter test cable K121
  • 023.09.00.000

Micro-ohmmeter cable 1 x 1.8m + 1.8m (can be changed on demand) with removable probes and removable small crocodile clips.

To be used along with one of K161 - K165 cables for resistance measurement in any area between crocodile clips and G-cramps connection points.

Micro-ohmmeter test cable K154
  • Micro-ohmmeter test cable K154
  • 023.05.00.000
  • Micro-ohmmeter test cable K154
  • 023.05.00.000

Micro-ohmmeter double hand spike test cable 1 x 1.1m + 1.9m (potential contact is spring-loaded).

Applied in case of impossibility of equipment connection using cables with crocodile clips and G-cramps. For pairwork.

Micro-ohmmeter test cable K155
  • Micro-ohmmeter test cable K155
  • 023.13.00.000
  • Micro-ohmmeter test cable K155
  • 023.13.00.000

Kelvin C-clamp test cable 1 x 0,9 m + 2,3 m (jaw up to 50 mm). Potential contact is spring-loaded. Current up to 200A. Weight is 1.34 kg.

Milli-ohmmeter test cable K236
  • Milli-ohmmeter test cable K236
  • 023.07.00.000-04
  • Milli-ohmmeter test cable K236
  • 023.07.00.000-04

Milli-ohmmeter test cable (jaw up to 30 mm) 1 x 9m + 9m (input pin diameter up to 37 mm).

For resistance measurement of direct current of power transformer windings with the voltage of 110 kV and less. In case MIKO-2.3 is placed on the ground.

Milli-ohmmeter test cable K238
  • Milli-ohmmeter test cable K238
  • 023.07.00.000-06
  • Milli-ohmmeter test cable K238
  • 023.07.00.000-06

Milli-ohmmeter test cable (jaw up to 50 mm) 1 x 6.5m + 6.5m (input pin diameter up to 37 mm).

For resistance measurement of direct current of power transformer windings with the voltage of 500 kV and less. In case MIKO-2.3 is placed on the transformer cover.

Milli-ohmmeter test cable K239
  • Milli-ohmmeter test cable K239
  • 023.25.00.000
  • Milli-ohmmeter test cable K239
  • 023.25.00.000

Milli-ohmmeter test cable (jaw up to 70 mm) 1 x 6.5m + 6.5m (input pin diameter up to 80 mm).

For resistance measurement of direct current of power transformer windings with the voltage of 500 kV and less. In case MIKO-2.3 is placed on the transformer cover.

Milli-ohmmeter extension test cable K240
  • Milli-ohmmeter extension test cable K240
  • 023.24.00.000
  • Milli-ohmmeter extension test cable K240
  • 023.24.00.000

Extension cable 1 x 8.5m.

For combined operations with K238 and K239 test cables. In case MIKO-2.3 is placed on the ground.

Milli-ohmmeter test cable K235
  • Milli-ohmmeter test cable K235
  • 023.23.00.000
  • Milli-ohmmeter test cable K235
  • 023.23.00.000

Milli-ohmmeter cable 1 x 3m. For resistance measurement on direct current of electric motors, electromagnets, current transformers, etc.
With 2 probes and 4 crocodile clips (jaw up to 25 mm) (length: 30 mm, plug: 3 mm) for contact resistance measurement of CT and VT contact joints and windings.

Kilo-ohmmeter test cable K321
  • Kilo-ohmmeter test cable K321
  • 023.06.00.000
  • Kilo-ohmmeter test cable K321
  • 023.06.00.000

Kilo-ohmmeter cable (jaw up to 30 mm) 1 x 0.8m + 0.8m.

For measurement of additional, shunt and dividing resistances in the presence of induced voltage.

Manipulating rod
  • Manipulating rod
  • 010.41.00.000
    010.41.00.000-01
    010.41.00.000-02
  • Manipulating rod
  • 010.41.00.000
    010.41.00.000-01
    010.41.00.000-02

Manipulating rod is designed for test cables connection from the ground or from the tank cover to the bushings of high-voltage circuit breakers, and to the structural elements of high-voltage disconnecting switches and earthing devices, without the use of ladders or elevated platforms.

The manipulating rod is completed with special extension cables. There is a Kelvin clamp with current and potential contacts to connect to the object on one side, and a contact pad on the other side. The device test cable is connected to the contact pad from the ground or a tank cover.

Manipulating rod extension cable is made according to a four-wire (Kelvin) scheme with the test current capacity of 100 A in the presence of a good contact.

Micromillikilloohmmeter MIKO-2.3
  • Open Original

    Branch of PJSC "FSC EES" - Lower Volga Main Electric Grid Enterprise

    To date, the following instruments are in operation at the Lower Volga PMES: PKV-3, PKV-M7, MIKO-2.3.

    This equipment is used to monitor the technical condition of high-voltage circuit breakers and disconnectors. During practical use, no serious shortcomings or substandard components were identified that would make the use impossible.

    The use of MIKO-2.3 compared to traditional methods of measuring ohmic resistance reduces the time for conducting a single measurement, and the digital indication of measurement results eliminates errors when reading the result. Light weight, absence of fragile parts, ease of use, convenient carrying bag for transportation from one site to another are the main factors that determined our choice.

    High-voltage circuit breaker controls are used during scheduled maintenance. The use of PKV reduces the time for diagnostics and increases the accuracy of the obtained data.

    V.N. Shvetsov
    Deputy Director – chief engineer

  • Open Original

    SPO Arctic, JSC

    Currently, SPO Arctic, JSC uses three types of measuring instruments manufactured by SKB EP, LLC: low/high resistance meter MIKO-2.3, micro-ohmmeters MIKO-1, milli-ohmmeter MIKO-8 (six pieces in total). For more than 10 years, these measuring instruments have been operated at a manufacturing facility without complaints.

    With the help of MIKO-2.3 and MIKO-8, the ohmic resistance of windings of DC and AC electric machines with a capacity of up to 500 kW is measured, as well as the ohmic resistance of rheostat stages. The measuring instruments are quite convenient and functional in operation. The presence of a built-in battery (MIKO-2.3) allows you to take measurements distantly. Light weight simplifies transportation (carrying).

    I.L. Grigoriev
    Chief metrologist

  • Open Original

    Sibir-Polymetals, JSC

    I inform you that MIKO-2.3 instrument (serial number 160) has been used by Sibir-Polymetals, JSC. It has been used since December 2015 to measure contact resistances of VGT-110 and VEB-110 circuit breakers contacts, to measure windings resistance of transformers and motors on DC. The instrument is small, has a low weight, that is very convenient during operation. We consider the instrument best functions to be the ability to measure contact resistances of circuit breakers contacts with a high current and a short battery charge time. Based on the experience of MIKO-2.3 operation, we can recommend other organizations to use it.

    A.A. Kolesnikov
    Best wishes, Chief Engineer

  • Open Original

    CHP-3, Tomsk Generation JSC

    The instruments have shown themselves to advantage in operation. They are convenient while using. They allow to carry out diagnostic with high precision. I would especially like to mention MIKO-2.3 instrument:

    • fast charging system that allows you to qickly prepare the instrument for operation;
    • light instrument weight;
    • versatility that allows you to use one instrument instead of several ones.

    In the future, when applying for the test instruments purchase, SKB EP LLC instruments will be in priority positions, as proven instruments in practice.

    V.A. Plaksin
    Deputy Director

  • Open Original

    Brestenergo, RUE

    This instrument is used to measure electrical resistance to direct current of traction transformers of a railway rolling stock, high-voltage circuit breakers and disconnectors, electric motors of all capacities, any switching devices.

    The use of MIKO-2.3 instrument has given the greatest reduction in time when measuring and increased the accuracy of obtained data. The digital display of the measurement result allows you to record test data more precisely. Low weight, small size, absence of movable and fragile parts in the instrument simplifies its use.

    A.L. Pavlyukovich
    Head of the laboratory

  • Open Original

    Gas Processing Company, TOO

    At this time, at our enterprise, specialists use the micromilliocilo-ohmmeter MIKO-2.3 instrument for your products, check power transformers 6/0.4 kV, switching devices 6 kV, 0.4 kV and explosion-proof electric motors 0.4 kV.

    The use of MIKO-2.3 instrument simplifies and greatly speeds up the process of checking electrical equipment, unlike other analogues of the instrument.

    During the year of operation, the instrument revealed numerous defects in electrical equipment, such as heating of the contacts of the switching device, damage to the windings of intrinsically safe electric motors, etc.

    After operation of MIKO-2.3 we confidently recommend to use it. TOO "Gas Processing Company" expresses its gratitude to SKB EP for the quality instrument and wishes you success in your activities!

    B.S. Saktaganov
    Director TOO «Gas Processing Company»

  • Open Original

    MAEK Kazatomprom, LLP

    The small instrument MIKO-2,3 is convenient for measurements due to its light weight and dimensions, especially when working on circuit breakers U-110 and MKP-110. When placing the instrument directly on bushings of the circuit breaker, one person is involved in this process. Reliable wire fasteners are attached to circuit breaker bushings. High measurement accuracy, the use of two different power supply systems of the instrument (mains and battery) expand the use of the device.

    PKV/M7 has shown itself as a reliable, affordable and fairly accurate instrument.

    The use of PKV/M7 instrument halves the time for taking parameters of a circuit breaker, because all measurements are performed in one cycle, which allows you to quickly assess the equipment technical condition.

    I.P.Chernetsky
    Chief Engineer

  • Open Original

    Engineering center Eurosibenegro, LLC

    During the use of ZU-2A charger when working on Taishet grid in the period from 17.11.2022 to 26.11.2022 a significant advantage over the standard complete set was revealed in terms of measurements duration without recharging. The operating time with MIKO-2.3 instrument amounted 8 hours without recharging. We also would like to note quick charging time. One of the disadvantages is a short connector cable of ZU-2A charger to MIKO-2.3. It would be much more convenient, if a connection plug was at a right angle. In this case, a cable break near the plug would be excluded.

    [Manufacturer note]: At the end of 2023, a special ZU-2A charger for MIKO-2.3 was realized. It acts as a power bank to maintain the charge of an instrument built-in battery. The recommendation to extend a connector cable was taken into account and improved.

    S.V. Gromyshev
    Deputy Head of the Electrotechnical Laboratory


  • Open Original

    Kamchatskenergo, PJSC

    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

  • Open Original

    Western main power networks the branch of KEGOC, JSC

    There are the following instruments for control and diagnostic in the Testing and diagnostic Department of the branch of KEGOC, JSC "Western main power networks":

    The high-voltage circuit breaker analyzer PKV/M5 (with the serial number 7) has been in the operation since 2001 and has been working without problems for more than 18 years. It is easy to use digital indication during the preparation of the instrument as well as during time and speed parameters measurements of oil HV circuit breakers MKP-110, VMT-110B, VMT-220B types. The maintenance operations were carried out effectively and on time. The instrument has been taken out of production nowadays.

    Universal multipurpose low / high resistance meter MIKO-2.3 (the serial number 063) has been being used in the testing department since 2017. It qualitatively measures the DC resistance of contacts of high-voltage circuit breakers of all types, of measuring and power transformers windings. The usability, convenient and clear digital indication of the instrument led to significant reduction in working time when conducting measurements on electrical equipment with a voltage class from 0.4 kV to 220 kV. Some defects were detected in the power contacts of high-voltage circuit breakers due to the formed burnings.

    "Western main power networks" the branch of KEGOC, JSC thanks SKB EP, LLC for convenient and high-quality instruments production and also hopes for further collaboration.

    K. Chernohaev
    Director

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