Free Standards Library

IEEE Std C37.112-2018 pdf download – IEEE Standard for Inverse- Time Characteristics Equations for Overcurrent Relays

IEEE Std C37.112-2018 pdf download - IEEE Standard for Inverse- Time Characteristics Equations for Overcurrent Relays. The characteristics of a microprocessor-based protective relay conform to this standard when they are implemented according to Equation (3), where t(

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IEEE Std C37.100.2-2018 pdf download – IEEE Standard for Common Requirements for Testing of AC Capacitive Current Switching Devices over 1 000 V

IEEE Std C37.100.2-2018 pdf download - IEEE Standard for Common Requirements for Testing of AC Capacitive Current Switching Devices over 1 000 V. 3. Definitions, acronyms, and abbreviations 3.1 Definitions For the purposes of this document, the...

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IEEE Std C37.100.1-2018 pdf download – IEEE Standard for Common Requirements for High-Voltage Power Switchgear Rated Above 1000 V

IEEE Std C37.100.1-2018 pdf download - IE EE Standard for Common Requirements for High-Voltage Power Switchgear Rated Above 1000 V. a) The ambient air temperature does not exceed 40 °C. The minimum ambient air temperature is -...

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IEEE Std C37.94-2017 pdf download – IEEE Standard for N times 64 kbps Optical Fiber Interfaces between Teleprotection and Multiplexer Equipment

IEEE Std C37.94-2017 pdf download - IEEE Standard for N times 64 kbps Optical Fiber Interfaces between Teleprotection and Multiplexer Equipment. 4.3 Channel data This 192-bit section comprises 96 data bits, with each data bit followed by...

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IEEE Std C37.82-2017 pdf download – IEEE Standard for the Qualifcation of Switchgear Assemblies for Class 1E Applications in Nuclear Power Generating Stations

IEEE Std C37.82-2017 pdf download - IEEE Standard for the Qualifcation of Switchgear Assemblies for Class 1E Applications in Nuclear Power Generating Stations. 4. Service conditions 4.1 General The service conditions in the application shall be analyzed...

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IEEE Std C37.74-2014 pdf download – IEEE Standard Requirements for Subsurface, Vault, and Padmounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems up to 38 kV

IEEE Std C37.74-2014 pdf download - IEEE Standard Requirements for Subsurface, Vault, and Padmounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems up to 38 kV. 4.1.2 Outdoor DSG Subclause 2.1.2 of IEEE Std C37.100.1-2007...

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IEEE Std C37.30.5-2018 pdf download – IEEE Standard for Defnitions for AC High-Voltage Air Switches Rated Above 1000 V

IEEE Std C37.30.5-2018 pdf download - IEEE Standard for Defnitions for AC High-Voltage Air Switches Rated Above 1000 V. moving contact: A conducting part that bears a contact surface arranged for movement to and from the stationary...

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IEEE Std C37.30.4-2018 pdf download – IEEE Standard for Test Code for Switching and Fault Making Tests for High-Voltage Interrupter Switches, Interrupters or Interrupting Aids Used on or Attached to Switches Rated for Alternating Currents Above 1000 V

IEEE Std C37.30.4-2018 pdf download - IEEE Standard for Test Code for Switching and Fault Making Tests for High-Voltage Interrupter Switches, Interrupters or Interrupting Aids Used on or Attached to Switches Rated for Alternating Currents Above 1000...

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IEEE Std C37.26-2014 pdf download – IEEE Guide for Methods of Power-F actor Measurement for Low-Voltage (1000 V AC or lower) Inductive Test Circuits

IEEE Std C37.26-2014 pdf download - IEEE Guide for Methods of Power-F actor Measurement for Low-Voltage (1000 V AC or lower) Inductive Test Circuits. 4.1 General Devices such as current-limiting fuses, fused circuit breakers, and similar fast-clearing...

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IEEE Std C37.24-2017 pdf download – IEEE Guide for Evaluating the Effect of Solar Radiation on Outd oor Metal- Enclosed Switchgear

IEEE Std C37.24-2017 pdf download - IEEE Guide for Evaluating the Effect of Solar Radiation on Outd oor Metal- Enclosed Switchgear. NOTE- -The editing instructions contained in this corrigendum define how to merge the material contained therein...

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