Multipurpose low / high resistance meter MIKO-2.3

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 0.1 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 (150 x 190 x 75 mm; 2.7 kg) MIKO-2.3 achieves cutting edge innovation, while the above features and self-contained power supply (charge time is 3 to 5 min) ensure full portability and high mobility of the instrument over the vast territory of substation or facility.

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.

规格

Additional complete set (on order)

照片 项目,索引 应用
Micro-ohmmeter test cable K161
  • Micro-ohmmeter test cable K161
  • 023.02.00.000
  • Micro-ohmmeter test cable K161
  • 023.02.00.000

Micro-ohmmeter test cable 1 x 0.9m + 0.9m with crocodile clips and G-cramps. Maximum current up to 1000A.

For resistance measurement of oil (all for 6, 10 and 35 kV), air (VBB-10; VVE-35; VVChP-15 types) and SF6 high-voltage circuit breakers (VGT-110; ZAR2F1; VGV-35; VGU-110; ZAR1FE; VGT-110; ZNM427.04980; VGB-35 types).

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 1 x 4.5m + 1m with crocodile clip and G-cramp. Maximum current up to 500A.

For resistance measurement of oil (U-220; MKP-220; VMT-220 types in case of work on a hoist), air (VV-330B; VVBK-110; VVBK-220; VVD-220B; VVS-220B; VVU-110G; VVBM-110B; VVS-110B; VVBK-220 types) and SF6 high-voltage circuit breakers (ZAR2F1; VGU-220; VGU-330; VGB-220; ZNM427.07465 types).

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 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 (U-220; MKP-220; VMT-220 types in case of work without a hoist).

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 1 x 10m + 1m with crocodile clip and G-cramp. Maximum current up to 500A.

For resistance measurement of air (VNV-330; VV-500B; VVBK-500; VDN-330Б; VNV-330; VNV-500; VVDM-330B types) and SF6 high-voltage circuit breakers (VGU-500; VGB-750; VGB-500; VGB-330).

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

For resistance measurement of
- of oil high-voltage circuit breakers (all for 6, 10 and 35 kV),
- air high-voltage circuit breakers (VBB-10; VVE-35; VVChP-15 types) and
- SF6 high-voltage circuit breakers (VGT-110; ZAR2F1; VGV-35; VGU-110; ZAR1FE; VGT-110; ZNM427.04980; VGB-35 types).

Lightweight version of the cable K161.
Cable cross section 24mm2. Current up to 200A. Length 0.9m. + 0.9m.

Micro-ohmmeter test cable K152
  • Micro-ohmmeter test cable K152
  • 023.03.01.000
  • Micro-ohmmeter test cable K152
  • 023.03.01.000

The cable is intended / recommended for monitoring:
- oil high-voltage circuit breakers (U-110; MKP-110; VMT-110 types),
- air high-voltage circuit breakers (ВВОА-15 type) and
- SF6 high-voltage circuit breakers (VGU-220; VGV-110; ZAR1DT-145; ZNM428; VGBU-110; VGB-330 types).

Lightweight version of the cable K162.
Cable cross section is 24mm2. Current up to 200A. Length is 2.27m. + 1.1m.

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 (VNV-330; VV-500B; VVBK-500; VDN-330Б; VNV-330; VNV-500; VVDM-330B types) and
- SF6 high-voltage circuit breakers (VGU-500; VGB-750; VGB-500; VGB-330).

Lightweight version of the K165 cable.
Cable cross section 24mm2. Current up to 200A. 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

With one double hand spike and one crocodile clip. Potential contact is spring-loaded. Length 0.9m. + 2.3m.

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 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 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 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 (the diameter of an input pin is up to 80 mm). 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.

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 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.

Standard complete set

照片 项目,索引 应用
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.

Charger ZU-1A (BC-1A)
  • Charger ZU-1A (BC-1A)
  • 023.20.00.000
  • Charger ZU-1A (BC-1A)
  • 023.20.00.000

For battery charging 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 2.3m + 1.1m with C-clamps.

For resistance measurement of oil (U-110; MKP-110; VMT-110 types), air (ВВОА-15 type) and SF6 high-voltage circuit breakers (VGU-220; VGV-110; ZAR1DT-145; ZNM428; VGBU-110; VGB-330 types).

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.
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.

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.

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