This standard provides a test procedure for determining the ampacity derating factor in the following cable installation configurations: Block-out or sleeve-type cable penetration fire stops; Conduits covered with a protective material; Trays covered with a protective material; Cable directly covered or coated with a fire-retardant material; Free-air drops enclosed with a protective material. The standard is applicable to cables installed and sized to IEEE Std 835(TM) for conduits and free-air… read more drops, and NEMA WC51/ICEA P-54-440 for cable tray. IEEE Std 135(TM) does provide ampacities for cables in a tray with a fixed spacing and may be used for cable penetration fire stop configurations only. This standard does not endorse the use of or provide application guidance for the installation of cable penetration fire stops and fire-protective materials. Cable designs are available that can withstand and remain functional during direct exposure to a fire. The user should refer to IEEE Std 634(TM) for the qualification requirements of cable penetration fire stops. read less

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This guide describes the general nature of lightning and discusses design methods for placement of masts and shield wires to provide direct stroke shielding of outdoor substations.Tables, formulas, and examples are provided to calculate effective shielding from direct lightning strokes. This guide specifically does not include: 1) every shielding design method that may have been developed 2) protection from surges entering a substation over power or communication lines 3) personnel safety issues

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This standard provides a basis for electronic reporting of transformer test data on liquid-immersed distribution transformers. This standard defines how to format and report the standard test data when electronic reporting is specified. In addition, it defines an extended set of data for those users who have a need for data.

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This guide provides recommendations for the test conditions, technical requirements of calibration equipment, calibration methods, processing and recording of test results for calibration of energized current transformers on voltages up to 34.5 kV AC.

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This guide provides guidance for the detection, monitoring, and evaluation of winding deformation in liquid-immersed power transformers based on the vibration test. This guide applies to the vibration test of oil-immersed power transformers rated above 66 kV. The theoretical basis, instrument configuration, safety precautions, sensor arrangement, operating condition indexes, vibration characteristic quantities, and evaluation method are included in this guide. Additional materials related to… read more the vibration test, such as typical vibration spectrums, optimal arrangement method, vibration test cases, research on winding condition threshold, and bibliography, are described in annexes. read less

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This standard establishes performance requirements and provides the testing and evaluation criteria for installed radiation portal monitors (RPMs) that detect photon- and neutron-emitting radioactive substances by monitoring people, packages, containers, and vehicles.

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This standard sets forth uniform methods of measurement of the electromagnetic and operational compatibility of unlicensed personal communications services (UPCS) devices. This standard does not cover licensed personal communications services (PCS) devices. The recommended methods described are applicable to the radio transmitter and monitoring devices contained in the UPCS device. These methods apply to the measurement of individual UPCS devices. Additional methods may be added to this… read more standard to fulfilll future requirements. In addition to the measurements specified herein, UPCS devices may also be required to be tested in accordance with other standards. Examples are listed in Annex A. read less

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This standard specifies U.S. consensus standard methods and instrumentation and test facilities requirements for measurement of radio frequency (RF) signals and noise emitted from unlicensed wireless devices (also called unlicensed transmitters, intentional radiators, and license-exempt transmitters) operating in the frequency range 9 kHz to 231 GHz. It does not include generic or product specific emission limits. It also does not cover measurement of radio emissions from unintentional… read more radiators, as mentioned in 1.2. Where possible, the specifications herein are harmonized with other national and international standards used for similar purposes. As described in 1.2 of this standard, measurement methods are provided for radiated and conducted emissions that can be generated by a variety of devices. For terms and phrases contained in the text that do not represent obvious or common usage, definitions are provided. In most cases, measurement instrumentation and calibration requirements, which should be used with this standard, are generally characterized in deference to standards dedicated to these subjects, which should be used in conjunction with this standard. Requirements for operation of test samples during measurements are presented for devices in general, as well as for specific types of devices that are frequently measured. Specific requirements for emission test data recording and reporting are presented with reference to general requirements contained in documents dedicated to standard laboratory practices, which should be used in conjunction with this standard. The main read less

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This standard provides definitions of terms associated with electromagnetic environmental effects including electromagnetic compatibility (EMC), electromagnetic pulse (EMP), and electrostatic discharge (ESD). In addition to definitions, several symbols and abbreviations are included.

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This standard specifies methods for assessing the radio-frequency (RF) wireless coexistence of equipment that incorporates RF communications. This standard specifies key performance indicators (KPIs) that can be used to assess the ability of the equipment under test (EUT) to coexist with other equipment in its intended operational environment.

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This standard includes procedures for evaluating the compliance of lighting devices with applicable electromagnetic compatibility (EMC) requirements. Test procedures for radiated field strength and conducted disturbance measurements are included, with reference to established standards, where applicable. This standard covers measurement methodologies, but is not intended to describe regulatory limits. Some regulatory agencies classify lighting devices either as Industrial, Scientific and… read more Medical (ISM) equipment or as digital equipment, depending on its technology. However, if the lighting device includes any wireless modules (intentional radiator, e.g., IEEE 802.11), that portion of the lighting device is usually classified as radio apparatus. This standard includes methods for evaluating the compliance of the lighting device, excluding its radio apparatus portion (if any), with the applicable EMC limits, as specified by the purchasing agency or regulatory authority. Compliance evaluation procedures for radio apparatus are usually subject to other testing procedures; e.g., ANSI C63.10 [B1], ANSI C63.26 [B2], and/or additional or other applicable requirements, as specified by the purchasing agency or regulatory authority. This standard does not cover the testing of other types of ISM equipment, incidental or un-intentional radiators. read less

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This part of IEC/IEEE 61886 is applicable to three-phase and single-phase liquid immersed subsea power transformers (including auto-transformers) with at least one winding with rated voltages in the range 3,6 ≤ Um ≤ 245 kV and with rated power in the range 50 kVA to 300 MVA. The intention is to specify additional requirements that are not covered by the IEC 60076 series and IEEE Std C57.12TM series. It is the intention of this document that subsea power transformers be designed and tested… read more either in accordance with the IEC 60076 series (IEC profile) or with the IEEE C57.12 series (IEEE profile). For subsea transformers where no winding has a rated voltage above or equal to 3,6 kV, this document can be applicable, either as a whole or in part. The mechanical design principles are also applicable for liquid-immersed reactors. Where the terms "subsea transformer" or "transformer" are used, this means "transformer assembly". Where required, it is stated whether transformer accessories like penetrators and connectors are included or not. read less

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This part of IEC/IEEE 62395 specifies requirements for electrical resistance trace heating systems and includes general test requirements. This document pertains to trace heating systems that can comprise either factory-fabricated or field-assembled (work-site) units, and which can be series and parallel trace heaters or surface heaters (heater pads and heater panels) that have been assembled and/or terminated in accordance with the manufacturer's instructions. This document also includes… read more requirements for termination assemblies and control methods used with trace heating systems. This document provides the essential requirements and testing appropriate to electrical resistance trace heating equipment used in industrial and commercial applications. The products complying with this document are intended to be installed by persons who are suitably trained in the techniques required and that only trained personnel carry out especially critical work, such as the installation of connections and terminations. Installations are intended to be carried out under the supervision of a qualified person who has undergone supplementary training in electric trace heating systems. This document does not include or provide for any applications in potentially explosive atmospheres. This document does not cover induction, impedance or skin effect heating. Trace heating systems are grouped into different types of applications and the different conditions found during and after installation necessitate different requirements for testing. Trace heating systems are usually for a specific type of installation or application. The product type grouping, applications and product attributes are indicated in Table 1. read less

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This part of IEC/IEEE 62395 provides detailed recommendations for the system design, installation, maintenance and repair of electrical resistance trace heating systems in industrial and commercial applications. This document does not include or provide for any applications in potentially explosive atmospheres. This document pertains to trace heating systems that can comprise either factory fabricated or field-assembled (work-site) units, and which can be series or parallel trace heaters, or… read more surface heaters (heater pads or heater panels) that have been assembled and/or terminated in accordance with the manufacturer's instructions. The products covered by this document are intended to be installed by persons who are suitably trained in the techniques required and that only trained personnel carry out especially critical work, such as the installation of connections and terminations. Installations are intended to be carried out under the supervision of a qualified person who has undergone supplementary training in electric trace heating systems. This document does not cover induction, impedance or skin effect heating. Trace heating systems and surface heating systems can be grouped into different types of installations. These are characterized by different requirements for testing and are usually certified for a specific type of installation or application. Typical applications for the different types of installation are shown in Table 1. read less

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