Click on the "PAR Number" to view the most current PAR information. The "Original PAR URL" shows the PAR as it was originally approved.
Sponsor PAR Number Title Original PAR URL PAR Approval
PE/TR PC57.19.02 Standard for the Design and Performance Requirements of Bushings Applied to Liquid Immersed Distribution Transformers
PE/TR PC57.21 Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA
PE/TR PC57.32a Standard for Requirements, Terminology, and Test Procedures for Neutral Grounding Devices Amendment: Neutral Grounding Resistor Section
PE/TR PC57.91 Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators
PE/TR PC57.93 Guide for Installation and Maintenance of Liquid-Immersed Power Transformers
PE/TR PC57.104 Guide for the Interpretation of Gases Generated in Oil-Immersed Transformers
PE/TR PC57.105 Guide for Application of Transformer Connections in Three-Phase Electrical Systems
PE/TR PC57.109 Guide for Liquid-Immersed Transformers Through-Fault-Current Duration
PE/TR PC57.113 Recommended Practice for Partial Discharge Measurement in Liquid-Filled Power Transformers and Shunt Reactors
PE/TR PC57.123 Guide for Transformer Loss Measurement
PE/TR PC57.124 Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers
PE/TR PC57.127 Guide for the Detection, Location and Interpretation of Sources of Acoustic Emissions from Electrical Discharges in Power Transformers and Power Reactors
PE/TR PC57.142 Guide to Describe the Occurrence and Mitigation of Switching Transients Induced by Transformers, Switching Device, and System Interaction
PE/TR PC57.143 Guide for Application of Monitoring Equipment to Liquid-Immersed Transformers and Components
PE/TR PC57.148 Standard for Control Cabinets for Power Transformers

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