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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Doble M, 4th Gen | Accutech Rentals

New PurchaseRental. 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. Doble M Power Factor tester.

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Get a quick quote: Advanced digital technology takes accuracy to new levels. Cleaning, dielectric testing, drying, visual inspections, doblle, packing, and documentation is all Rugged construction provides the accuracy of a laboratory instrument with the ability to withstand harsh field conditions. If you need more current than mA for large apparatus, the Type C Resonator option extends the range. Dielectric testing for our electrical testing dolbe.


The Liquid-Insulation Cell Oil Cellalso supplied with the M, can be used in the field for a quick accuracy check. M software makes testing easy, fast, and smart.

Doble M – Livingston

Automated setup eliminates errors. Click the “Get A Quick Quote” button to get started. Provides the highest power to better m410 in-service conditions. While most 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.

JM Test Rental options can help you save capital, get the latest technology, and expand your capabilities. The M is the leading instrument for evaluating the condition of high-voltage power apparatus.

The M also uses a 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. The accuracy of test results is directly related to the quality of the test signal.

We can also help with these: This produces reliable results and stable readings. Even a small change in a measurement becomes a reliable diagnostic indicator. The M instrument comes with M software to simplify the management of test results. It also measures capacitance, to evaluate physical changes to the apparatus.


Unlike other test instruments, the M eliminates the need to balance the bridge, automatically making measurements for you. The result is highly accurate and repeatable measurements. It sets the standard for accuracy, reliable test results, and intelligent diagnostics for dolbe worldwide. It also offers a range of built-in self-diagnostic tools.

One stop for your electrical safety equipment needs, cleaning, and electrical testing services. Daily, Weekly and Monthly rates are available on select items.

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. Electrical glove testing is available at JM Test Systems.

Doble M4000 M4100 Power Factor Insulation Analyzer

The internal measurement circuitry is fully digital. Records are presented in a format that doboe easy to read, save, and print. The M allows you to perform a variety of diagnostic tests: