This standard covers preferred ratings, construction and testing requirements, and application, loading, installation, operation and maintenance guidelines for all high-voltage enclosed and non-enclosed, indoor and outdoor air switches rated in excess of 1000 V. This includes such switch types as disconnect, horn-gap, fault-initiation, and ground for manual or power operation. The following switch types are not covered by this standard: interrupter switches, distribution cutouts fitted with… read more disconnecting blades, and switches used in metal-enclosed and pad-mounted switchgear. This standard also does not apply to load-break separable insulated connectors, circuit breakers, circuit switchers, or reclosers. read less

定价： 114元 / 折扣价： 97 元

This standard specifies design tests for relays and relay systems that relate to the immunity of this equipment to repetitive electrical transients. Two types of tests are specified. The oscillatory and fast transient SWC tests are defined as distinct tests. However, it is not intended to prohibit a combined test, provided all requirements of the individual SWC tests are met. The application of SWC tests to equipment other than relays and relay systems is the responsibility of those specifying the testing.

定价： 113元 / 折扣价： 97 元

The scope of this guide is to describe field test methods that assure current transformers (CTs) are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after being in service for a period of time. Annex A describes wiring integrity checks, the use of test jacks, current-shorting switches, and relay test equipment. Annex B illustrates excitation voltage measurement differences between rms responding voltmeters(commonly used… read more under field conditions) and average responding voltmeters (commonly used in laboratory tests) and also discusses the effect of the source impedance. Annex C describes the characteristics, and other pertinent information, of optical current sensor systems used with protective relaying. It provides an overview of the components used in an optical sensor system, discusses the differences from conventional CTs, and provides testing information. Annex D is the bibliography for this guide. read less

定价： 66元 / 折扣价： 57 元

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. Specifically excluded from this guide are stand-alone ac power protectors.

定价： 104元 / 折扣价： 89 元

This insulation coordination standard applies to three-phase alternating current (ac) systems above 15 kV. This standard specifies the procedure for selection of withstand voltages [basic lightning impulse insulation level (BIL) and basic switching impulse insulation level (BSL)] for equipment phase-to-ground and phase to-phase insulation systems. It also identifies a list of standard insulation levels, based on the voltage stress to which the equipment is being exposed. Although the principles of this standard also apply to transmission line insulation systems, the insulation levels may be different from those identified as standard insulation levels. The guide to this standard, IEEE Std 1313.2-1999, is an application guide with practical examples, intended to provide guidance in the determination of the withstand voltages and to suggest calculation methods and procedures. NOTE--IEEE Std 1313.2-1999 will be revised as IEEE Std C62.82.2 with its next revision.

定价： 87元 / 折扣价： 74 元

The purpose of this guide and subsequent revisions to IEEE Std 143-1954 [8]1 is to present some basic considerations for the selection of neutral grounding parameters that will provide for the control of ground-fault current and overvoltage on all portions of three-phase electric utility systems. Particular attention is given to five discrete areas of the electric utility system and they are subdivided in Parts II through V.2 In these five areas of the utility system, there are certain common… read more considerations, but also there are unique ones that have led to the utilization of different ways of grounding. There is no one simple answer to the problem of grounding. Each of a number of solutions to a grounding problem has at least one feature that is outstanding, but which is obtained at some sacrifice of other features that may be equally worthy (see ANSI/IEEE Std 142-1982 [7], [8] and [10]). Various solutions will be discussed in Part II, through Part V for each of the five areas of the system. This part of the guide (Part I), provides considerations and definitions that are general to all types of systems read less

定价： 84元 / 折扣价： 72 元

This guide is intended for application to three-phase electrical utility systems and is Part I of the IEEE Std C62.92 series. This part provides definitions and considerations that are general to all types of neutral grounding for electrical utility systems. Goals of system grounding, means of grounding, and classes of grounding are addressed in this part.

定价： 65元 / 折扣价： 56 元

Develop revised maximum permissible exposure (MPE) levels for exposures to electromagnetic fields for exposures in controlled and uncontrolled environments at frequencies between 3 kHz and 300 Ghz. The MPEs will be expressed in terms of quantifiable parameters such as electric-field strength, magnetic-field strength, power density, induced current and contact current. Exclusions and peak limits for pulsed fields will be included.

定价： 104元 / 折扣价： 89 元

This standard provides recommendations to protect personnel in military environments against established adverse health effects associated with exposure to electric, magnetic, and electromagnetic fields, induced and contact current, and contact and arcing voltages over the frequency range of 0 Hz to 300 GHz. The recommendations, expressed as dosimetric reference limits (DRLs) and exposure reference levels (ERLs), incorporate safety factors that address uncertainties such as uncertainties in the… read more experimental data, measurement uncertainties, and differences in threshold variability between individuals, so as to establish an appropriate margin of safety. The DRLs are expressed in terms of in situ electric field strength, specific absorption rate (SAR), and incident power density. The ERLs are expressed in terms of environmental exposure fields and power densities. In the case of contact current, however, only ERLs are provided. The DRLs and ERLs are intended to protect against established adverse human health effects associated with electrostimulation of tissue and partial and whole-body heating, but may not protect against electromagnetic interference (EMI) with implanted medical devices. This standard does not apply to exposure of informed volunteers in medical or scientific research studies subject to approval by institutional review boards for the use of human subjects, nor does it include exposure assessment techniques, risk management/safety program procedures, warning sign design, procedures for medical treatment of suspected overexposures, nor assessment of hazards associated with exposure of ordnance, fuel, or electro-explosive devices. read less

定价： 132元 / 折扣价： 113 元

The scope of this standard is to establish minimum performance criteria and test requirements for nonalarming radiation detectors used to manage the exposure of emergency responders to photon radiation. The detectors shall provide rapid and clear indication of the level of radiation exposure. Emergency responders include fire services, law enforcement, and medical services. Other possible users include critical infrastructure key resources (CIKR) such as heavy equipment, transportation, and… read more utility personnel and members of the public who may be involved in emergency situations. PERDs can be of two types, either alarming electronic or non-alarming. Both types of PERDs have radiation response ranges appropriate for radiation emergencies. Alarming PERDS are addressed in ANSI/IEEE N42.49A [B8].1 (Alarming PERDS can alarm on exposure rate, accumulated exposure, or both.) Non-alarming PERDs are ionizing photon radiation measuring devices that provide a visual indication of the accumulated exposure to the user and are designed to be worn or carried on the body of the user. These detectors do not have an audible or visual alarm. These detectors should provide an indication when recommended exposure guidance levels have been reached or exceeded. The typical users of non-alarming PERDs are responders performing time-sensitive, critical missions such as saving lives or property, and/or otherwise mitigating the effects of radiological emergencies. This standard provides a graded approach to assessing the performance of multiple types of non-alarming radiation detectors. The applicability of each type should be evaluated by the user. These detectors may include carbon fiber detectors and self-developing photochemical detectors. The carbon fiber detectors are designed for many reuses as described in ANSI N322-2009. The photochemical detectors are designed for a single emergency exposure or use. PERDs are not used to monitor personnel exposure for the purposes of confirming compliance with regulatory exposure limits, i.e., their indications are not intended to be used for accumulated exposure monitoring records for individuals, but are intended for emergency use. read less

定价： 70元 / 折扣价： 60 元

This standard applies to interface systems used to interconnect both programmable and nonprogrammable electronic measuring apparatus with other apparatus and accessories necessary to assemble instrumentation systems. It applies to the interface of instrumentation systems, or portions of them, in which the a) Data exchanged among the interconnected apparatus is digital (as distinct from analog) b) Number of devices that may be interconnected by one contiguous bus does not exceed 15 c) Total… read more transmission path lengths over the interconnecting cables does not exceed 20 m d) Data rate among devices does not exceed 8 000 000 B/s. The basic functional specifications of this standard may be used in digital interface applications that require longer distances, more devices, increased noise immunity, or combinations of these. Different electrical and mechanical specifications may be required (for example, symmetrical circuit configurations, high threshold logic, special connectors, or cable configurations) for these extended applications. read less

定价： 391元 / 折扣价： 333 元

This document is applicable to single and three-phase wet-mateable and dry-mateable AC connectors, penetrators and jumper assemblies with rated voltages from 3 kV (Umax = 3,6 kV) to 30 kV (Umax = 36 kV). This document relates to the requirements and tests for products in the "as manufactured and supplied" condition. This document is not applicable to requirements and tests for products that have been subsequently installed, deployed or retrieved.

定价： 110元 / 折扣价： 94 元

This standard describes a method for characterizing organic electronic transistor-based ring oscillators, including measurement techniques, methods of reporting data, and the testing conditions during characterization.

定价： 147元 / 折扣价： 125 元

This part of IEC/IEEE 80005 describes high-voltage shore connection (HVSC) systems, onboard the ship and on shore, to supply the ship with electrical power from shore. This document is applicable to the design, installation and testing of HVSC systems and addresses: HV shore distribution systems, shore-to-ship connection and interface equipment, transformers/reactors, semiconductor/rotating frequency convertors, ship distribution systems, and control, monitoring, interlocking and power… read more management systems. It does not apply to the electrical power supply during docking periods, for example dry docking and other out of service maintenance and repair. Additional and/or alternative requirements can be imposed by national administrations or the authorities within whose jurisdiction the ship is intended to operate and/or by the owners or authorities responsible for a shore supply or distribution system. It is expected that HVSC systems will have practicable applications for ships requiring 1 MVA or more or ships with HV main supply. Low-voltage shore connection systems are not covered by this document. read less

定价： 106元 / 折扣价： 91 元

This part of IEC 60079 specifies general and testing requirements for electrical resistance trace heaters for application in explosive atmospheres with the exclusion of those for Equipment Protection Level (EPL) Ga and Da. This standard covers trace heaters that comprise either factory or field (work-site) assembled units, and which may be series trace heaters, parallel trace heaters, trace heater pads, or trace heater panels that have been assembled and/or terminated in accordance with the… read more manufacturer's instructions. This standard also includes requirements for termination assemblies and control methods used with trace heating systems. The explosive atmospheres referred to in this standard are those defined in IEC 60079-10-1 and IEC 60079-10-2. Annexes D and E outline the application of this standard for those users applying the Division method of area classification. This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence. read less

定价： 94元 / 折扣价： 80 元