| C57.12.40-2006 - IEEE Standard for Requirements for Secondary Network Transformers, Subway and Vault Types (Liquid-Immersed) |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2006-10-09 |
|
| C57.12.40-2011 - IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed) |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2012-01-23 |
|
| C57.12.40-2011 - IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 GrdY/19 920 and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed) - Redline |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2012-03-22 |
|
| C57.12.40-2017 - IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed) |
IEL Online |
IEEE |
Components, Circuits, Devices and Systems |
2017-09-01 |
|
| C57.12.40-2024 - IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed) |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2024-08-08 |
|
| C57.12.40-2024 - IEEE Standard for Network, Three-Phase Transformers, 2500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 600 V and Below; Subway and Vault Types (Liquid Immersed) - Redline |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2025-04-23 |
|
| C57.12.44-1994 - IEEE Standard Requirements for Secondary Network Protectors |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
1988-01-01 |
|
| C57.12.44-2000 - Standard Requirements for Secondary Network Protectors |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
1988-01-01 |
|
| C57.12.44-2005 - IEEE Standard Requirements for Secondary Network Protectors |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2006-06-19 |
|
| C57.12.44-2014 - IEEE Standard Requirements for Secondary Network Protectors |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2014-06-12 |
|
| C57.12.44-2024 - IEEE Standard Requirements for Secondary Network Protectors |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2025-06-17 |
|
| C57.12.50-1981 - American National Standard Requirements for Ventilated Dry-Type Distribution Transformers, 1 to 500 kVA, Single-Phase, and 15 to 500 kVA, Three-Phase, With High-Voltage 601 to 34 500 Volts, Low-Voltage 120 to 600 Volts |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2005-02-07 |
|
| C57.12.51-1981 - American National Standard Requirements for Ventilated Dry-Type Power Transformers, 501 kVA and Larger, Three-Phase, with High-Voltage 601 to 34 500 Volts, Low-Voltage 208Y/120 to 4160 Volts |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2007-09-10 |
|
| C57.12.51-2008 - IEEE 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 |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2009-03-17 |
|
| C57.12.51-2019 - IEEE Guide for Mechanical Interchangeability of Ventilated Dry-Type Transformers |
IEL Online |
IEEE |
Components, Circuits, Devices and Systems |
2019-09-09 |
|
| C57.12.51-2019 - IEEE Guide for Mechanical Interchangeability of Ventilated Dry-Type Transformers - Redline |
IEL Online |
IEEE |
Components, Circuits, Devices and Systems |
2019-10-15 |
|
| C57.12.52-1981 - American National Standard Requirements for Sealed Dry-Type Power Transformers, 501 kVA and Larger, Three-Phase, with High-Voltage 601 to 34 500 Volts, Low-Voltage 208Y/120 to 4160 Volts |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2005-02-07 |
|
| C57.12.52-2012 - IEEE Standard for Sealed Dry-Type Power Transformers, 501 kVA and Higher, Three-Phase, with High-Voltage 601 to 34500 Volts, Low-Voltage 208Y/120 to 4160 Volts—General Requirements |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2013-03-07 |
|
| C57.12.52-2024 - IEEE Standard for Sealed Dry-Type Distribution and Power Transformers |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2024-08-22 |
|
| C57.12.52-2024 - IEEE Standard for Sealed Dry-Type Distribution and Power Transformers - Redline |
IEL Online |
IEEE |
Power, Energy and Industry Applications |
2025-06-24 |
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