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 PC57.12.23 Standard for Submersible Single-Phase Transformers: 250 kVA and Smaller; High Voltage 34 500GrdY/19 920V and Below; Low Voltage 600 V and Below
PE/TR PC57.12.32 Standard for Submersible Equipment - Enclosure Integrity
PE/TR PC57.12.34 Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase Distribution Transformers, 10 MVA and Smaller; High-Voltage, 34.5 kV Nominal System Voltage and Below; Low-Voltage, 15 kV Nominal System Voltage and Below
PE/TR PC57.12.38 Standard for Pad-Mounted-Type, Self-Cooled, Single-Phase Distribution Transformers 250 kVA and Smaller: High Voltage, 34 500 GrdY/19 920 V and Below; Low Voltage, 480/240 V and Below
PE/TR PC57.12.44 Standard Requirements for Secondary Network Protectors
PE/TR PC57.12.51 Guide for Mechanical Interchangeability of Ventilated Dry Type Transformers
PE/TR PC57.12.51 Standard for Ventilated Dry-Type Power Transformers, 501 kVA and Larger, Three-Phase, with High-Voltage 601 V to 34 500 V; Low-Voltage 208Y/120 V to 4160 V- General Requirements
PE/TR PC57.12.60 Standard Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers
PE/TR PC57.12.70-2011/Cor 1 Standard Terminal Markings and Connections for Distribution and Power Transformers - Corrigendum 1: Correction of Annex A
PE/TR PC57.12.80 Standard Terminology for Power and Distribution Transformers
PE/TR PC57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
PE/TR PC57.12.91 Standard Test Code for Dry-Type Distribution and Power Transformers
PE/TR PC57.13.2 Standard for Conformance Test Procedure for Instrument Transformers
PE/TR PC57.13.5 Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above
PE/TR PC57.13.7 Standard for Current Transformers with a Maximum mA Secondary Current of 250 mA

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