Doble's Insulation Analysis equipment offers the world's most advanced testing for power apparatus. The M4100 is the leading instrument for evaluating the condition of high-voltage power apparatus. It sets the standard for accuracy, reliable test results, and intelligent diagnostics for customers worldwide.
The M4100, together with DTA Expert System software, represent the new generation of smart, automated test equipment used to determine the condition of high-voltage substation apparatus.
The M4100 Insulation Analyzer evaluates the integrity of high-voltage substation apparatus by measuring the power factor/tangent delta, along with a number of other essential values. It also measures the capacitance, to evaluate physical changes to the apparatus. The M4100 provides accurate evaluations even under conditions of high electrostatic and electromagnetic interference.
Doble Test Assistant (DTA) software is a comprehensive software package to enhance productivity and enable maintenance engineers to make informed decisions on apparatus condition in the field. DTA uses a Doble-developed expert system based on decades of analysis of field test results. DTA software works with the M4100 instrument as automated test equipment to determine the condition of high-voltage substation apparatus.
Continually track the byproducts of deterioration with a rugged dissolved gas analysis monitor that can withstand the harsh conditions of a substation while providing intelligent alerts and trend analysis. Backed by Doble’s decades of experience with oil analysis and condition assessments, the Doble Delphi provides critical data when you need it most – in real time.
M4100 
DTA Software
The Doble Delphi