Resistance Meters

Product Details:

Measure motor winding resistance and other low resistances

Perform precise tests of objects of resistive and inductive nature using one instrument - small resistance meter Sonel MMR-630.

We present a versatile small resistance meter that provides very high measurement accuracy. The measurement resolution is 0.1 µΩ. The MMR-630 model enables measurements of objects of resistive as well as inductive nature, such as electric motors. This is due to the large measurement current for the individual subranges and the corresponding operating modes. When testing objects of a resistive nature, rapid measurement (3 seconds) is applicable. When testing inductive objects, extended measurement is used (there is also the possibility of a shortened mode with a slightly lower measurement accuracy).

The MMR-630 has been enhanced with special functions that allow it to be used also in the production cycle for serial measurements, for example, during the inspection of large batches.

 Product features

MMR-630 microohmmeter enables accurate measurements of both connections resistance (welded, soldered, bolted) and winding resistance of electrical motors.

• Measurements of objects resistive in nature:
  • welded and soldered connections, equipotential bondings, earthing conductors,
  • contacts, welds of rails, conductors and cables,
  • measurement according to the four-lead method.
• Measurements of objects inductive in nature:
  • motor windings,
  • low-resistance coils.

Additional functions

• Automatic or manual selection of measuring range (measurement of objects of an inductive nature).
• Selection of measurement mode according to the type of measured object:
  • fast measurement (3 seconds) for measurement of objects of a resistive nature,
  • extended measurement for testing of objects of an inductive nature (accelerated mode, with slightly worse accuracy, available); with automatic discharging of the object after measurement.
• Selection of measurement mode depending on application (including control of product series):
  • measurement in normal mode - triggered when the “START” button is pressed,
  • measurement in automatic mode - the instrument awaits connection of all four test leads to the object, after which it automatically start measurement in one or both directions and calculates the mean resistance value,
  • measurement in continuous mode - the meter repeats successive measurement cycles with breaks every 3 seconds (for objects of a resistive nature) or performs measurement continuously (for objects of an inductive nature)
• Window mode:
  • makes possible to set an upper and lower limit within the measurement result should remain; sound signal triggered when the result is beyond set range,
  • capability of performing measurements even under disturbances of a value five times greater than the measured signal.

Additional Information:

• Production Capacity: 1
• Delivery Time: 10
• Packaging Details: BOX

Product Details:

Product features

• measurement of very low resistance
• high immunity to disturbances
• easy operation
• big touchscreen
• automatic measurement mode
• autoranging

Application

The MMR-640 meter is designed to measure very low resistance of resistive objects. This product is made to be used in power plants, railways and maintenance companies to measure resistance of:

• breakers, contacts,
• earthing conductors, equipotential bondings,
• welded and soldered connections,
• bolted connections,
• and other resistive objects. MMR-640 can be also utilized on production lines (eg. at the final production control stage).

Device capabilities

The MMR-640 meter provides an innovative combination of a high-performance measuring device with a modern user interface and advanced data management system.

Durable and practical casing

In response to the customers needs the MMR-640 has been designed to operate in difficult environmental conditions. A unique casing with the IP67 ingress protection rating ensures that the device is both waterproof and dustproof.

Easy readout

The MMR-640 meter is equipped with a readable colour touchscreen that, due to its 800 x 480 pixel resolution, provides both high comfort of interacting with the interface and high readability of the measurement results.

Additional Information:

• Production Capacity: 1
• Delivery Time: 10
• Packaging Details: BOX

Product Details:

Damage location and insulation measurements

The Sonel MIC-10k1 insulation resistance meter is a proven choice for professionals who require the highest precision and extensive measurement capabilities. This model is one of the most advanced insulation resistance meters available on the market.
Recommended for representatives of electrical services who professionally deal with inspecting the condition and taking care of good condition of electroinsulating materials.

The Sonel MIC-10k1 is a comprehensive diagnostic instrument used for measuring insulation resistance of electrical power engineering objects such as: single and multi-core cables, transformers, motors and generators, capacitors or circuit breakers and other power station equipment.

Features

• Insulation resistance measurement
  • up to 40 TΩ 
• Measurement voltage - any in the range of
  • 50…10000 V, 50…1000 V with steps of 10 V, 1…10 kV with steps of 25 V
• Continuous indication of measured insulation resistance or leakage current
• Automatic discharge of measured object capacitance voltage after the end of insulation resistance measurement
• Acoustic signalling of 5-second intervals to facilitate capturing time characteristics
• Adjustable measuring time - up to 99'59'’
• T1, T2 and T3 test times for measuring one or two absorption coefficients from the range of 1…600 s
• Polarization index (PI), absorption coefficients Ab1, Ab2 and dielectric absorption ratio (DAR) measurement
• Indication of actual test voltage during measurement
• 1.2 mA, 3 mA or 6 mA test current
• Insulation resistance measurement using two- or three-wire method
• Measurements with test leads up to 20 m
• Protection against measuring live objects
• Automatic measurement of multiple core cables with the optional AutoISO-5000 adapter (for MIC-10k1 max. measuring voltage 5 kV)
• Measurement of capacitance during the measurement of RISO
• Measurement of temperature (with optional probe ST-1)
• Step voltage insulation resistance measurement (SV)
• Dielectric Discharge calculation (DD)
• Damage location (burnout)
• Digital filters for measurements with strong interferences
• It can work in an environment where electromagnetic interferences of 400 kV occur
• Measurement of DC and AC voltages within the range of 0…750 V

Application

MIC-10k1 meter is designed to measure the insulation resistance of electro-power objects, i.e. single- and multi-core cables, transformers, motors and generators, capacitors, switches and other devices installed in power stations. Furthermore, it is dedicated for measurements in areas with very high electromagnetic disturbances, e.g. electrical substations with 765 kV voltage or higher.

Capabilities

Highly efficient HV inverter, with test voltage of 10 kV and current of 6 mA, suitable for measuring the insulation resistance up to 40 TΩ. Achieving such a result makes these meters unrivalled devices. Three-wire resistance measurement, performed using a "GUARD" wire, eliminates surface leakage currents caused by contaminated insulation, thereby increasing the reliability of obtained results.

The meter measures temperature of tested object, which is necessary to determine the temperature correction factor for RISO. In addition, it indicates the absorption coefficient (DAR - Dielectric Absorption Ratio), Polarization Index (PI) and the value of Dielectric Discharge (DD). The device allows user to assess the condition of the insulation, by applying the test voltage incrementally in steps (SV). 

Additional Information:

• Production Capacity: 1
• Delivery Time: 10
• Packaging Details: BOX

Product Details:

Measure motor winding resistance and other low resistances

Possibility to measure objects of resistive and inductive nature with the use of versatile small resistance meter Sonel MMR-620.

We present a professional small resistance meter MMR-620, which ensures high measuring accuracy - the measurement resolution is 1 µΩ. With the use of this device it is possible to perform measurements of objects of both resistive and inductive nature (e.g. testing of electric motors). The meter provides a high measuring current for individual subranges and various operating modes, adjusted to the type of measured object - quick measurement mode (3 sec) for testing objects of resistive nature, as well as extended measurement mode for testing objects of inductive nature.

Product features

MMR-620 microohmmeter enables accurate measurements of both connections resistance (welded, soldered, bolted) and winding resistance of electrical motors.

• Measurements of objects resistive in nature:
  • welded and soldered connections, equipotential bondings, earthing conductors,
  • contacts, welds of rails, conductors and cables,
  • measurement according to the four-lead method.
• Measurements of objects inductive in nature:
  • motor windings,
  • low-resistance coils.

Additional functions

• Automatic or manual selection of measuring range (measurement of objects of an inductive nature).
• Selection of measurement mode according to the type of measured object:
  • fast measurement (3 seconds) for measurement of objects of a resistive nature,
  • extended measurement for testing of objects of an inductive nature (accelerated mode, with slightly worse accuracy, available); with automatic discharging of the object after measurement.
• Selection of measurement mode depending on application (including control of product series):
  • measurement in normal mode - triggered when the “START” button is pressed,
  • measurement in automatic mode - the instrument awaits connection of all four test leads to the object, after which it automatically start measurement in one or both directions and calculates the mean resistance value,
  • measurement in continuous mode - the meter repeats successive measurement cycles with breaks every 3 seconds (for objects of a resistive nature) or performs measurement continuously (for objects of an inductive nature)
• Window mode:
  • makes possible to set an upper and lower limit within the measurement result should remain; sound signal triggered when the result is beyond set range,
  • capability of performing measurements even under disturbances of a value five times greater than the measured signal.

Product Details:

Measure winding resistance and low resistance with MMR-650

Ready to work even in extreme conditions, the winding resistance and small resistance meter Sonel MMR-650 has been created to accurately measure small resistances of resistive and inductive objects. The instrument can be used to measure the resistance of both transformer windings - including amorphous-core transformers - and resistive objects. The MMR-650 meter is dedicated to use in power plants, maintenance companies and railway industry, among others.

Product features

• measurement of winding resistance (inductive objects including amorphous core transformers)
• measurement of very low resistance
• transformer core demagnetization function
• automatic temperature compensation function (temperature probe)
• function of determining the temperature of a motor under load
• high immunity to disturbances

Application

The MMR-650 winding resistance and low resistance meter is designed to measure very low very low resistance of both windings - including amorphous core transformers - and resistive objects. This product is made to be used in power plants, railways and maintenance companies to measure resistance of:

• windings of power transformers and motors,
• breakers, contacts,
• earthing conductors, equipotential bondings,
• welded and soldered connections,
• bolted connections,
• and other resistive and inductive objects.

MMR-650 can be also utilized on production lines (eg. at the final production control stage).

Device capabilities

The MMR-650 winding resistance and low resistance meter provides an innovative combination of a high-performance measuring device with a modern user interface and advanced data management system. Wireless data transmission, enhanced system of 2D codes and ability to print labels to identify test items, all contribute to bringing new quality of work and allow the user to perform a wide range of measurements.

Easy readout

The MMR-650 winding resistance and low resistance meter is equipped with a readable colour touchscreen that, due to its 800 x 480 pixel resolution, provides both high comfort of interacting with the interface and high readability of the measurement results.

Durable and practical casing

In response to the customers needs the MMR-650 microohmmeter has been designed to operate in difficult environmental conditions. A unique casing with the IP67 ingress protection rating ensures that the device is both waterproof and dustproof.

Product Details:

From now on, you can measure the HV circuit breaker and the transformer with one instrument. Get to know Sonel MMR-6500 micrometer!

It is distinguished by a modern design and advanced solutions enabling measurements of resistive objects with high current. Similarly to other models of MMR-6XXX series, this device has been equipped with a module for measurement of inductive objects with current up to 10 A, which is a unique feature among meters in this class. Its practical functions - temperature measurement and automatic compensation of measurement results in relation to the temperature measured or programmed by the user - are worth highlighting. The MMR-6500 also has recorder functions.

Equipped with special measurement algorithms and additional functions, the meter ensures the possibility of selecting the appropriate measurement method depending on the nature of the measured object and the measurement conditions. These features further extend the device's range of applications.

Product features

• measurements of resistive objects with current up to 100 A
• measurements of induction objects up to 10 A
• measurements of objects earthed on both sides (i.e. main joints of HV switches)
• measurement with one- or both-way current flow
• high immunity to outside interference
• measurements temperature of windings
• automatic compensation temperature of objects measured
• a state of art interface with a touch screen and expanded memory
• cooperation with a printer and a 2D barcode reader
• WiFi, USB and LAN communication
• IP67
• it can work in an environment where electromagnetic interferences of 400 kV occur

Application

MMR-6500 micrometer is device with a state of art design with unprecedented  approach to measuring small resistances. The instruments allow to measure resistive objects with a high current and have a unique in his measurement class module for inductive current objects up to 10 A.

Device capabilities

Sonel microhmeter MMR-6500 thanks to the use of special algorithms, measuring functions and a stabilized, non-pulsing measurement current allows user to work in difficult conditions. Possibility of use measurement current up to 100 A and a high power source allows you to measure the contacts of the HV switch with basic uncertainty from 0.25%.

Simplicity of readings

The MMR-6500 microhmeter is equipped with readable, touch screen, 5-inch colored display with a resolution of 800x480 pixels for convenience of readings measurement results.

Help system

The use of a large, readable display allowed for use helpful appetent drawings how to use the meter.

Product Details:

Measure HV switches and transformers with one device

Versatile and multifunctional micrometer Sonel MMR-6700 - a single device for HV circuit breaker and transformer measurements. It is distinguished by a modern design and advanced solutions enabling measurements of resistive objects with high current. Additionally, the device has a module for measurement of inductive objects with current up to 10 A, which is a distinctive feature of MMR-6XXX series and a unique solution in its class.

The Sonel MMR-6700 has been enhanced with many useful functions, such as temperature measurement and automatic compensation of measurement results in relation to the measured or user-programmed temperature. The micrometer also has a recorder function. Due to special measurement algorithms and additional functions, the Sonel MMR-6700 allows you to select the appropriate measurement method depending on the nature of the measured object and the measurement conditions, thus increasing the measurement capabilities and application areas of the device. The meter's functionality is complemented by a modern, easy-to-read interface, a range of communication interfaces, wireless communication and cooperation with a computer, printer and a 2D code reader. All these features make Sonel MMR-6700 a convenient and intuitive way to manage measurements, their results and identification data of measured objects.

Product features

• measurements of resistive objects with current up to 200 A
• measurements of induction objects up to 10 A
• measurements of objects earthed on both sides (i.e. main joints of HV switches)
• measurement with one- or both-way current flow
• high immunity to outside interference
• measurements temperature of windings
• automatic compensation temperature of objects measured
• a state of art interface with a touch screen and expanded memory
• cooperation with a printer and a 2D barcode reader
• WiFi, USB and LAN communication
• IP67
• it can work in an environment where electromagnetic interferences of 400 kV occur

Application

The MMR-6700 microhmeter is device with a state of art design with unprecedented approach to measuring small resistances. The instrument allow to measure resistive objects with a high current and have a unique in his measurement class module for inductive current objects up to 10 A.

Device capabilities

The MMR-6700 microhmeter thanks to the use of special algorithms, measuring functions and a stabilized, non-pulsing measurement current allows user to work in difficult conditions. Possibility of use measurement current up to 200 A and a high power source allows you to measure the contacts of the HV switch with basic uncertainty from 0.25%.

Simplicity of readings

The MMR-6700 microhmeter is equipped with readable, touch screen, 5-inch colored display with a resolution of 800x480 pixels for convenience of readings measurement results.

Help system

The use of a large, readable display allowed for use helpful appetent drawings how to use the meter.