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Doble M5300: Sweep Frequency Response Analyzer

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The Doble M5300 SFRA Test System uses Sweep Frequency Response Analysis, a proven technique for making accurate and repeatable measurements. Pioneered by Doble the sweep approach has become the industry standard and is the preferred method for making frequency domain measurements.

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The Doble M5300 Sweep Frequency Response Analyzer (SFRA) detects mechanical failure or movement of windings due to short circuits, mechanical stresses or transportation

Use it to ensure transformer performance, reduce maintenance cost, and increase the service life of transformers.

The M5300 uses Sweep Frequency Response Analysis, a proven technique for making accurate and repeatable measure-ments. Pioneered by Doble the sweep approach has become the industry standard and is the preferred method for making frequency domain measurements. Here’s how SFRA works: The M5300 sends an excitation signal into the transformer and measures the returning signals across a broad frequency range. By comparing this response to baseline and other results (such as from similar units), you can identify deviations and confirm internal mechanical problems.

Features:

Range – The M5300 provides a frequency response measurement from 10 Hz to 25 MHz. Doble recommends the default setting of 20 Hz – 2 MHz for transformers as there is limited diagnostic value in measurements outside of this range. The diagnostic frequency range of 20 Hz to 2 MHz covers the most important diagnostic areas:

  • Core and Magnetic Properties
  • Winding Movement and Deformation
  • Interconnections – Leads and Tap Changers

Resolution – The M5300 measures the frequency response at logarithmically spaced frequency intervals of 1.2%. A constant excitation level is maintained for each frequency measurement. The M5300 has the ability to auto-scale each frequency measurement providing an overall dynamic range of 80 dB with a ±1 dB accuracy. This gives the highest combination of dynamic range and accuracy available.

Repeatability – The M5300 is a field-ready instrument for high quality measurements. The sweep frequency approach combined with Doble’s world class engineering means that frequency response measurements are highly repeatable and even subtle changes can be used for diagnostic purposes.

Test Leads – We provide simple, robust test leads to handle the rigors of site testing. International tests have proven repeatedly that we have the most reliable and repeatable test leads available.

Practicality – The M5300 is supported by Doble’s world class Client Service Engineers and decades of field experience. We have learned through practice and experimentation what constitutes good fi eld technique and know how to gain value and benefi t from the SFRA measurement. Let us work with you to bring that value and benefit to your company!


Documentation:

Equipment Brochure


Additional information

Manufacturer

UOM - Unit of Measure

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