The World's Best Tools for Predictive Maintenance Testing and Troubleshooting of Electric Motors, Coils, Windings, and even Transformers ..

ALL-TEST Pro, LLC is located in Old Saybrook, CT, USA. It introduced the worlds first impedance based Motor Coil Analyzer in 1985. Since then thousands of the instruments have been sold worldwide.

ALL-TEST Pro® testing equipment is used by Fortune 500 Companies for their Predictive Maintenance, Quality Control and Trouble Shooting needs.  Our equipment is a must have for Predictive Maintenance programs throughout the Oil and Gas Industries and with Automobile Manufacturers.

Members of IEEE, EMCW and Best Practices Allied Partner to the US Department of Energy.

The ALL-TEST Pro® detects any type of motor electrical fault: shorted windings, winding contamination, insulation breakdown, poor connections, ground faults, phase unbalances, and all types of rotor faults. It tests virtually any size or type of motor, generator or transformer, even from a remote location. There is no other available tool or method with comparable diagnostic power or cost effectiveness.

New: View an iPresentation on ALL-TEST Pro® instruments at ReliabilityWeb | Test your motor knowledge

Haga clic aquí para Español.              

Motor Diagnostics Training

Exhibitions and Events

Press Releases

Employment Opportunities

Software Updates

Customer Information

Detecting Early Bearing Faults with ESA