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High/Low Voltage

Whether you work with hydro, wind, thermal, or alternative power generation; power generators; low voltage or high voltage distribution; power distribution racks or cables; smart grid or ensuring workplace safety, the power industry has a strong focus on standardization and interoperability. This list on High/Low Voltage includes standards from ISO, IEC, IEEE, and others.

IEEE C62.72-2016

IEEE Guide for the Application of Surge-Protective Devices for Use on the Load Side of Service Equipment in Low-Voltage (1000 V or Less, 50 Hz or 60 Hz) AC Power Circuits

Revision Standard - Active.Guidance is provided to specifiers, users and manufacturers of surge-protective devices (SPDs) about the application considerations of SPDs to power distribution systems and associated equipment. This guide applies to SPDs to be connected to the load side of the service equipment (and main over current protective device) of 50 Hz or 60 Hz ac power circuits rated 1000 V ac or less. Information on surge origins, effects of surges, number and magnitude of surge events, location categories, power distribution system (PDS) configurations, grounding and bonding, SPD specifications, SPD ratings, SPD characteristics, SPD lifetime, interactions of SPDs with a PDS, and SPD coordination considerations are provided in the guide.

IEC 61643-12 Ed. 3.0 b:2020

Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power systems - Selection and application principles

IEC 61643-12:2020 describes the principles for the selection, operation, location and coordination of SPDs to be connected to 50/60 Hz AC power circuits, and equipment rated up to 1 000 V RMS. These devices contain at least one non-linear component and are intended to limit surge voltages and divert surge currents. NOTE 1 Additional requirements for special applications are also applicable, If required. NOTE 2 IEC 60364 and IEC 62305-4 are also applicable. NOTE 3 This standard deal only with SPDs and not with surge protection components (SPC) integrated inside equipment. This third edition cancels and replaces the second edition published in 2008. This edition constitutes a technical revision. NOTE The following differing practice of a less permanent nature exists in the USA: In the USA, SPDs tested to Class I tests are not required. This exception applies to the entire document. This edition includes the following significant technical changes with respect to the previous edition: a) Scope: Deleted reference to 1 500 V dc b) Added or revised some definitions c) Added new clause 4 on Need for protection d) Added new information on disconnecting devices e) Revised Characteristics of SPD f) Revised List of parameters for SPD selection g) Added new information on Measured Limiting Voltage e) Added or revised some Annexes

IEC 61643-321 Ed. 1.0 b:2001

Components for low-voltage surge protective devices - Part 321: Specifications for avalanche breakdown diode (ABD)

Is applicable to avalanche breakdown diodes (ABDs) which represent one type of surge protective device component (hereinafter referred to as SPDC) used in the design and construction of surge protective devices connected to low-voltage power distribution systems, transmission, and signalling networks. Test specifications in this standard are for single ABDs consisting of two terminals. However, multiple ABDs may be assembled within a single package defined as a diode array. Each diode within the array can be tested to this specification. This standard contains a series of test criteria for determining the electrical characteristics of the ABD. From the standard test methods described herein, the performance characteristics and ratings of the ABD can be verified or established for specific packaged designs.


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.