Industrial micro-ohmmeter MIKO-1

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Resistance measurement in the range 1 μΩ - 20 mΩ

Auto resistance range selection

Test current up to 50A

Test current of MIKO-1 flows stably and enough time

Stable operation in the presence of powerful industrial frequency interference

Self-contained power supply

Test cable set with ergonomic design

Simplicity and portability

Operation in all weather conditions

MIKO-1 at professional skill competitions of IDGC of the North Caucasus

MIKO-1 at professional skill competitions of PJSC ROSSETI

Demonstration of the operation of the MIKO-1 microohmmeter on a knife disconnect

Industrial micro-ohmmeter MIKO-1 is designed to measure the contact resistance to direct current:

contacts of high-voltage and automatic circuit breakers;
relay contacts, disconnectors;
bolted, welded and brazed joints of current leads and busbars;
rail connections, wagon wheel pairs, etc.

User participation in the measurement process is minimal. The measurement process is started by pressing one button, without any additional settings.

To obtain reliable values, it is recommended to make measurements at the test current as close to the object nominal current as possible.

Measurements are made using a highly stable DC current. This allows measuring the electrical resistance of circuits containing current transformers, which are usually fitted on high-voltage dead tank circuit breakers.

MIKO-1 is designed for operation in harsh electromagnetic environment of power stations and substations, with measuring channels of the device allowing to suppress electromagnetic interference of industrial frequency.

Integrated battery in MIKO-1 provides its portability and has a capacity sufficient to perform to 50 measurements. It is charged from an internal charger powered by the mains.

Test cables of different lengths and with different lugs are specially designed for easy connection to the object.

SKB018.10.00.000
50 А Kelvin clamp test cable with clamps jaw up to 50 mm
(standard complete set)

50 A Kelvin double hand spike test cable with rotating contacts
(on order)

Potential probe (2 pcs.) for test cable SKB018.10.00.000
(on order)

Potential spring-loaded contact (2 pcs.) for test cable SKB018.10.00.000
(on order)

The device has a small weight (3.6 kg) and small dimensions; a special bag provides its convenient movement, which allows to connect it on various circuit breakers.

If you have to carry out diagnostics in difficult weather conditions, you can be sure of the accuracy of the results. MIKO-1 micro-ohmmeter is guaranteed to operate at temperatures from -15°C to + 40°C.

Specifications	Value
Resistance range	1 μΩ - 20 mΩ
Resolution	0.1 μΩ
Accuracy	±(1+0.01*Rх) μΩ, where Rx is measured resistance value
Test current output	up to 50 A
Measurement display resolution	6 digits
Power supply (built-in battery)	Lead A506/3.5 S1
Battery charging time	< 4 h
Battery lifetime	3 years
Power supply (mains voltage)	100-242 V AC, 50 Hz 90-300 V DC
Internal memory	-
Number of measurements with a fully charged battery	20 - 50
PC connection	-
Display	Monochrome, alphanumeric
Power consumption	<20 W
Dimensions	250 х 80 х 210 mm
Device weight	3.6 kg
Environmental protection	IP 20
Operating temperature range	from -15°C to +40°C
Interface and user manual language	English
Calibration period	1 year
Warranty period	13 months

Standard complete set

Photo	Item, Index	Application
Main instrument MIKO-1 018.00.00.000	Main instrument MIKO-1 018.00.00.000	Instrument and additional documents: Calibration Certificate, User Manual, Log Book.
Test cable 018.10.00.000	Test cable 018.10.00.000	50А Kelvin clamp test cable with jaw up to 50 mm. Length 2.1 m + 3.5 m.
Mains cable 018.09.00.000	Mains cable 018.09.00.000	For battery charging through the built-in charger. 2 meters long.
Shunt	Shunt	Type: 75 ShSM 75-0.5 (75ШСМ 75-0,5). For checking MIKO-1 operability.
Fuses	Fuses	Type: VP2B-1V-2A (ВП2Б-1В-2А) (2 pcs). For the power source protection.
Tool bag 118.01.00.000	Tool bag 118.01.00.000	Convenient and wearproof bag for transportation of the device, documentation and accessories. Weight 0.52 kg.

Additional complete set (on order)

Photo	Item, Index	Application
Test cable 018.13.00.000	Test cable 018.13.00.000	50A Kelvin double hand spike test cable. It is used when it is impossible to connect to the object with test cable 018.10.00.000, for example, when monitoring the resistances of busbars and connecting buses. Length: 0.8 m. + 1.8 m.
Test cable 018.17.00.000	Test cable 018.17.00.000	50A Kelvin double hand spike test cable with rotating contacts. An alternative version to test cable 018.13.00.000, as well as if it is impossible to connect to the object with test cable 018.10.00.000, for example, when measuring contact resistances in hard-to-reach places of objects with painted surfaces. Length: 0.8 m. + 1.8 m.
Potential probe (2 pcs.) 023.22.00.000 023.22.00.000-01	Potential probe (2 pcs.) 023.22.00.000 023.22.00.000-01	For connection to the input pin. Recommended to be used together with 018.10.00.000.
Potential spring-loaded contact (2 pcs.) 023.21.00.000 023.21.00.000-01	Potential spring-loaded contact (2 pcs.) 023.21.00.000 023.21.00.000-01	For connection to the input pin. Recommended to be used together with 018.10.00.000
Battery А506/35S	Battery А506/35S
Adapter for a reference coil 023.12.00.000	Adapter for a reference coil 023.12.00.000	For testing laboratories: inspection / calibration of the instrument.
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. Manipulating rod - 2.2 (length 2.2 m / weight as an assembled set 3.4 kg); Manipulating rod - 3.7 (length 3.7 m / weight as an assembled set 4.0 kg); Manipulating rod - 5.1 (length 5.1 m / weight as an assembled set 4.6 kg).

Articles (8)

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Comparison of SKB EP micro-ohmmeters

SKB EP company implements three specialized micro-ohmmeters for resistance measurement - MIKO-21, MIKO-1 and MIKO-10, as well as a universal multipurpose low / high resistance meter MIKO-2.3 for resistance measurement in inductive and non-inductive objects.

21 june 2022

The influence of inductance on the electrical resistance measurements results

Current instability of microohmmeters causes an additional error in resistance measurements proportional to the change in current during measurement and the circuit inductance.

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Micro-ohmmeter MIKO-1 review

The instrument has a test current of up to 50 A and the measurement range from 1 µΩ to 0.02 Ω. It has a built-in battery.

MIKO-1 - EAC № RU Д-RU.PA03.B.32634/22; valid until 28.04.2027

MIKO-1 is included in Russian State Register under #37381-08, valid until 11.04.2028

MIKO-1 is included in Russian Register of Innovative Products under #239, valid until 12.10.2018.

Official reviews from customers based on the results of operating SKB EP instruments are available upon request. Please, fill out the form on the website.

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