Loading
Review of Case Materials
Reviews records, documents, testimony, data, and other relevant materials and consults with counsel regarding technical issues related to the matter.
Provide Expert Analysis
Applies specialized knowledge and experience to evaluate the technical or professional issues involved.
Form Expert Opinions
Develops independent, supportable opinions based on the available evidence and relevant standards.
Prepare Expert Reports
Showing Results 0 of 0
An expert can evaluate a rewound motor by comparing repair records, winding data, electrical test results, and operating performance with the motor's original characteristics and application requirements. Relevant evidence may include winding resistance and balance, insulation tests, winding configuration, no-load current, temperature, vibration, and documentation of the repair procedures performed. ANSI/EASA AR100-2025 provides recommended practices for the repair, testing, analysis, rewinding, and rebuilding of rotating electrical apparatus, although manufacturer requirements and other applicable specifications may also govern a particular repair.
Broken or cracked rotor bars can result from thermal cycling, repeated or severe starting, mechanical stresses, manufacturing or casting conditions, excessive loading, and other electrical or service-related stresses. Depending on the location and extent of the damage, rotor-bar problems can affect current, torque, vibration, speed, or starting performance. Examination of the rotor, starting and operating history, and appropriate electrical or condition-monitoring data can help determine whether rotor damage contributed to the reported problem.
An electric motor may start slowly or fail to reach full speed because of inadequate or unbalanced supply voltage, excessive driven load, incorrect connections, rotor defects, mechanical binding or excessive friction, or a mismatch between the motor and the application. Starting current, terminal voltage, speed, load, and mechanical-condition data can help determine whether the problem originates in the motor, electrical supply, controls, or driven equipment. Motor starting capability depends in part on the relationship between available motor torque and the torque and inertia of the connected load.
Yes. The same horsepower rating does not necessarily make two electric motors interchangeable. Compatibility may also depend on speed, torque characteristics, voltage, frequency, phase, enclosure, duty, service factor, frame and mounting arrangement, starting method, control compatibility, and the requirements of the driven load. These characteristics should be evaluated together when determining whether a replacement motor is suitable for the application.
Fire Origin & Cause, +4
Manufacturing
Prepares clear, well-supported expert reports outlining methodology, analysis, findings, and opinions.
Provide Deposition Testimony
Explains findings and opinions under oath and responds to questioning during deposition testimony.
Testify in Court
Presents specialized findings and opinions clearly to judges, juries, arbitrators, or other decision-makers.
