Surge Comparison Testing is the most comprehensive quality control method for electrical windings. It is extremely effective as a diagnostic tool to evaluate and detect any windings fault that may exist. The Surge test can be used to detect the following in the windings:-

• Turn – to – turn short circuits
• Coil – to – coil short circuits
• Phase – to – phase short circuits
• Reverse coil connections
• Open coils
• Grounded coils
• Defective insulation

Since faults are indicated on CRT screen also, a technician can quickly determine the type of faults and often the cause and location of the defect.