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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
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.
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A generator performance review can compare voltage, current, frequency, real and reactive power, power factor, temperature, load, excitation, and other operating measurements with equipment ratings and the conditions under which the machine was operating. Test methodology and instrumentation also matter when competing parties report different results. IEEE 115 provides test procedures for determining performance characteristics of synchronous machines, including generators, and addresses acceptance and performance testing under specified operating conditions.
The investigation may include stator and rotor condition, winding insulation, bearings, vibration history, cooling, excitation equipment, protective-relay records, fault data, operating temperatures, prior tests, maintenance records, and any components removed after the event. The sequence of alarms and electrical measurements can help distinguish a developing equipment problem from damage caused by an external fault or abnormal operating condition. IEEE's current AC generator protection guide specifically addresses protection against internal electrical faults, system faults, and abnormal operating conditions. IEEE also maintains guidance for rewinding synchronous generators rated 1 MVA and above, with specific attention to stator and rotor refurbishment.
The prime mover and generator perform different functions. A diesel engine, gas turbine, steam turbine, or other prime mover provides mechanical shaft power; the generator converts that mechanical input into electrical power. A dispute can therefore require determining whether inadequate electrical output originated in the generator or was a consequence of the equipment driving it. IEEE's current generator-rewind guidance expressly covers synchronous generators driven by diesel engines, steam turbines, combustion gas turbines, and hydro turbines, illustrating the technical distinction between the generator and its prime mover.
A standby-power investigation may include generator-set starting records, batteries, fuel supply, automatic transfer equipment, load acceptance, frequency and voltage stability, alarms, controls, maintenance, exercise and load-test history, and the sequence of events surrounding the power interruption. For emergency and applicable standby systems within its scope, NFPA 110 addresses emergency power supply systems and includes installation, performance, maintenance, load-transfer, and system-classification requirements. The specific requirements applicable to a dispute depend on the system, occupancy, adopted codes, and relevant edition.
