SONEL MMR-6500

Microohmmeter

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.

Category: Contact Resistance Test Set

Description
Brand

Product overview:Sonel MMR-6500 Micro-Ohmmeter

The Sonel MMR-6500 Micro-Ohmmeter is a high-performance instrument designed for precise measurement of very low resistance in electrical systems. Engineers and technicians use the Sonel MMR-6500 Micro-Ohmmeter to test contacts, joints, and winding resistance in transformers and motors, ensuring reliable operation in substations, power plants, and industrial environments.

This advanced device measures both resistive and inductive components using a stabilized, non-pulsing current. It supports test currents up to 100A–200A for resistive objects and up to 10A for inductive measurements, enabling accurate diagnostics across a wide range of applications.
As a result, users can detect faults early and prevent costly system failures.

Moreover, the tester uses a 4-wire (Kelvin) measurement method, which eliminates the influence of test lead resistance and ensures highly accurate results. It also supports one-way and two-way current flow, improving measurement flexibility.
In addition, automatic temperature compensation enhances accuracy when measuring transformer windings and other inductive elements.

The analyzer features a 5-inch color touchscreen display with an intuitive interface for easy operation and clear result visualization. Furthermore, it includes advanced data management with large internal memory and recording functions.
Therefore, users can store, review, and analyze measurement data efficiently.

Additionally, the device supports USB, LAN, and Wi-Fi communication, allowing seamless data transfer and integration with external systems. Its rugged design with IP67 protection ensures reliable performance in harsh environments.
Thus, professionals can perform accurate resistance testing even in demanding field conditions.

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

Applications of Micro-Ohmmeter

This device is widely used for testing contact resistance in circuit breakers, switchgear, transformer windings, cables, and grounding systems. As a result, it helps technicians detect faults early and ensures safe and reliable operation of electrical networks.

Product Documents

Datasheet_MMR-6700-6500

Brand

SONEL, POLAND

Sonel Electrical Test Equipment Pakistan

Sonel Electrical Test Equipment Pakistan provides reliable solutions for electrical testing, measurement, and safety inspection. The brand Sonel develops professional instruments used by engineers, electricians, and industrial technicians for accurate diagnostics. In Pakistan, Sarwar Electronics deals in Sonel products and supplies advanced electrical testing solutions to various industries. These instruments help professionals ensure safety, verify installations, and maintain system performance.

About Sonel Poland

Sonel S.A. is a well-known manufacturer of electrical measurement instruments. The company focuses on designing high-quality testing equipment for electrical safety, installation testing, and maintenance. Because accurate testing is essential for modern electrical systems, Sonel products deliver reliable performance and precise measurement results. Moreover, their instruments meet international standards for electrical testing and safety compliance.

Sonel Product Range

Sonel offers a wide range of electrical testing instruments designed for professional applications. Key product categories include:

Insulation resistance testers
Earth resistance meters
Electrical installation testers
Power quality analyzers
Digital multimeters
Portable electrical testing devices

These tools allow engineers to measure electrical parameters and identify potential faults in electrical systems.

Applications of Sonel Instruments

Sonel testing equipment supports many industries that require accurate electrical diagnostics and safety verification. Common applications include:

Electrical installation testing
Industrial maintenance and inspection
Power distribution system analysis
Safety compliance testing
Electrical troubleshooting

Reliable testing equipment helps organizations maintain safe and efficient electrical systems.

Reliable Electrical Testing Solutions in Pakistan

In Pakistan, Sarwar Electronics provides access to professional electrical testing instruments for engineers and technicians. Accurate measurement tools play a key role in maintaining electrical safety and performance. With advanced engineering and continuous innovation, Sonel continues to deliver dependable solutions for electrical testing and measurement worldwide.