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 PC57.13.8 Standard Requirements for Station Service Voltage Transformers
PE/TR PC57.13.9 Standard for Power-Line Carrier Coupling Capacitors and Coupling Capacitor Voltage Transformers
PE/TR PC57.16 Standard for Requirements, Terminology, and Test Code for Dry-Type Air-Core Series-Connected Reactors
PE/TR PC57.18.10 Standard Practices and Requirements for Semiconductor Power Rectifier Transformers
PE/TR PC57.19.00 Standard General Requirements and Test Procedure for Power Apparatus Bushings
PE/TR PC57.19.02 Standard for the Design and Performance Requirements of Bushings Applied to Liquid Immersed Distribution Transformers
PE/TR PC57.19.04 Standard Performance Characteristics and Dimensions for High Current Power Transformer Bushings with Rated Continuous Current in Excess of 5000 A in Bus Enclosures
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 PC57.110 Recommended Practice for Establishing Liquid-Immersed and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents

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