This guide covers the application of surge protective devices (SPD) and equipment ports incorporating an SPD used to protect information and communication technology (ICT) circuits, including smart grid. This guide is not intended to cover individual surge protective components. Specifcally excluded from this guide are stand-alone ac power protectors.
IEEE Std C62.43.1:2020 pdf download Read More »
This standard applies to metal-oxide surge arresters (MOSAs) designed to repeatedly limit the voltage surges on 48 Hz to 62 Hz power circuits (>1000 V) by passing surge discharge current and automatically limiting the flow of system power current. This standard applies to devices for separate mounting and to devices supplied integrally with other equipment.
IEEE Std C62.11:2020 pdf download Read More »
This guide describes transformer connections and confgurations in three-phase electrical systems, the characteristics of these various connections, and the possible operating problems under normal or abnormal conditions. All combinations of delta and wye, grounded and ungrounded, T-connected, zigzag, and certain special connections are considered. Only two-winding and auto-transformers are included.
IEEE Std C57.105:2019 pdf download Read More »
This standard describes methods for performing tests specified in IEEE Std C.57.12.01 and other referenced standards applicable to dry-type distribution and power transformers, with a voltage of 601 V or higher in the highest voltage winding.2 It is intended for use as a basis for performance and for the proper testing of dry-type ditribution and
IEEE Std C57.12.91:2020 pdf download Read More »
This standard defines the terminal markings and connections for distribution, power, and regulating transformers covered in the IEEE C57™ series of standards, guides, and recommended practices.
IEEE Std C57.12.70:2020 pdf download Read More »
This test procedure for the thermal evaluation of insulation systems of dry-type power and distibution transformers is to be used for determining the temperature classification and modification of the insulation systems. This standard shall apply to all dry-type transformers with a voltage of 601 V or higher in the highest voltage winding except as follows:
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This guide provides information for understanding the construction, operation, and application of high-voltage (> 1000 V) fuses and accessories, intended for use on alternating current (ac) electrical distribution systems. Current-limiting, expulsion, electronic, and other non-current-limiting fuses and accessories are covered, as are North American, European, and other application practices. As a guide, this document contains
IEEE Std C37.48:2020 pdf download Read More »
This standard covers the design, testing, and intallation of metal-enclosed switchgear that incorporates gas (typically SFJ at higher than ambient pressure as an insulation medium for alternating-current applications rated above I kV to 52 kV. The contents of the switchgear may include but are not limited to circuit breakers, switches, bushings, buses, instrument transformers, cable
IEEE Std C37.20.9:2019 pdf download Read More »
The editing instructions are shown in bold italic. Four editing instructions are used: change, delete, insert, and replace.Change is used to make corrections in existing text or tables. The editing instruction specifies the location of the change and describes what is being changed by using strikethrough (to remove old material) and underscore (to add new
IEEE Std C37.20.2a:2020 pdf download Read More »
The editing instructions are shown in bold italic. Four editing instructions are used: change, delete, insert, and replace.Change is used to make corrections in existing text or tables. The editing instruction specifies the location of the change and describes what is being changed by using strikethrough (to remove old material) and underscore (to add new
IEEE Std C37.20.1a:2020 pdf download Read More »