Doble M Rent and purchase options available at JM Test. The M is the leading instrument for evaluating the condition of high-voltage power. Insulation systems associated with many types of high-voltage power apparatus and devices often consist of a mix of non-homogeneous component parts. The Doble M evaluates the integrity of high-voltage substation apparatus by measuring the power factor/tangent delta along with capacitance to evaluate.

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This produces reliable results and stable readings. Unlike other test instruments, the M eliminates the need to balance the bridge, automatically making measurements for you.

Doble M, 4th Gen | Accutech Rentals

We can also help with these: The internal measurement circuitry is fully digital. Even a small change in a measurement becomes a reliable diagnostic indicator.

With a maximum output of mA at 10 kV, the M offers high charging current, allowing you to run single-phase exciting current tests at higher voltages, increasing the turn-to-turn stress. Cleaning, dielectric testing, drying, visual inspections, stamping, packing, and documentation is all Dielectric testing for our electrical testing laboratory. The Liquid-Insulation Cell Oil Cellalso supplied with the M, can be used in the field for a quick accuracy check.


JM Test Rental options can help you save capital, get the latest technology, and expand your capabilities. The M allows you to perform a variety of diagnostic tests: Rugged construction provides the accuracy of a laboratory instrument with the ability to withstand harsh field conditions.

Provides the highest power to better dble in-service conditions. The M has the power to test a wide range of apparatus, making it highly versatile. Built-in test set diagnostics provide information on instrument status. The M instrument comes with M software to simplify the management of test results.

Automated setup eliminates errors.

Doble – M4100

The M was engineered soble the ground up to overcome the common problems that plague other test instruments. The result is highly accurate and repeatable measurements. The quality of the power source is not an issue. Advanced digital technology takes accuracy to new levels. The accuracy of test results is directly related to the quality of the test signal.

M software makes testing easy, fast, and smart. Electrical Safety Onsite Testi Records are presented in a format that is easy to read, save, and print. It sets the standard for accuracy, reliable test results, and intelligent diagnostics for customers worldwide.

The M is the leading instrument for evaluating the condition of high-voltage power apparatus. The M also uses n4100 patented technique called Line Frequency Modulation, in which measurements are made at a frequency above and below the system frequency, to eliminate the effect of electrostatic interference. Get a quick quote: If you need more current than mA for large apparatus, the Type C Resonator option extends the range. Daily, Weekly doblr Monthly rates are available on select items.


Click the “Get A Quick Quote” button to get started. Generates its own clean test signal for the most reliable and repeatable results. New PurchaseRental.

One stop for your electrical safety equipment needs, cleaning, and electrical testing services. While roble test instruments use available power lines or portable generators to generate the output test signal, the M uses an internal waveform generator to create its own precise sine wave.

Electrical glove testing is available at JM Test Systems.

Doble M4100 Insulation Analyzer

Get a Quick Quote. Doble M Power Factor tester.

It also offers a range of built-in self-diagnostic tools. It also measures capacitance, to evaluate physical changes to the apparatus.