MPR's solution utilized the following approach:

• Identify an analysis methodology using first principles transformer models and plant system models; develop generic open phase detection logic
• Ask to assist the manufacturer in the final development of technology to eliminate risk
• Complete R&D of generic detection logic for open phase detection system
• Develop detailed transformer models of various transformer winding configurations and core constructions to evaluate options
• Validate models with field tests of open phase conditions

Ultimately, MPR developed a logic scheme to be used as a generic detection scheme.