IEEE C57.12.34-2015
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

Standard No.

IEEE C57.12.34-2015

Release Date

2015

Published By

IEEE - The Institute of Electrical and Electronics Engineers@ Inc.

Status

Be replaced

Replace By

IEEE C57.12.34-2022

Latest

IEEE C57.12.34-2022

Scope

This standard covers certain electrical@ dimensional@ and mechanical characteristics and takes into consideration certain safety features of three-phase@ 60 Hz@ liquid-filled@ self-cooled@ pad-mounted@ compartmental-type distribution transformers. These transformers are rated 10 MVA and smaller@ with the high-voltage limit of 34.5 kV system nominal voltage and below@ and with low-voltage limit of 15 kV system nominal voltage and below. These transformers are generally used for step-down purposes from an underground primary cable supply. This standard covers the connector@ bushing@ and terminal arrangements for radial or loop-feed systems. Either certain minimum dimensions or certain specific dimensions shall be specified. This standard does not cover the electrical and mechanical requirements of any accessory devices that may be supplied with the transformer. Purpose This standard is intended for use as a basis for determining performance@ interchangeability@ and safety of the equipment covered@ and to assist in the proper selection of such equipment.

IEEE C57.12.34-2015 history

• 1970 IEEE C57.12.34-2022 IEEE 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
• 2015 IEEE C57.12.34-2015 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
• 2009 IEEE C57.12.34-2009 Requirements for Pad-Mounted@ Compartmental-Type@ Self-Cooled@ Three-Phase Distribution Transformers@ 5 MVA and Smaller; High Voltage@ 34.5 kV Nominal System Voltage and Below; Low Voltage@ 15 kV Nominal System Voltage and Below
• 2004 IEEE C57.12.34-2004 Standard Requirements for Pad-Mounted@ Compartmental-Type@ Self-Cooled@ Three-Phase Distribution Transformers (2500 kVA and Smaller) - High-Voltage: 34 500 GrdY/19 920 Volts and Below; Low-Voltage: 480 Volts and Below (Errata - 8/15/2005)