During the lifecycle of shielded cable systems, failures may occur. In most situations, the system operator locates the failure in order to effect repairs and return the system to operation. Cable fault-locating methods should be chosen to maximize the effectiveness of the fault-locating procedure while minimizing any additional damage to the insulation of the cable system. This guide is intended to be applied to all voltage classes of insulated shielded power cable systems.

定价： 83元 / 折扣价： 71 元

Telecommunications transmission measuring equipment for measuring the analog transmission characteristics of networks and circuits, including digitally encoded analog signals, analog components of digital services, e.g. ISDN, HDSL, etc., and other complex signals.

定价： 169元 / 折扣价： 144 元

This Recommended Practice addresses system and equipment design techniques and equipment selection that will improve electrical safety. The techniques in this Practice are intended to supplement the minimum requirements of installation codes and equipment standards. It does not include communications, programming, or life safety systems such as fire alarm and security.

定价： 151元 / 折扣价： 129 元

This standard covers specifications of common public-key cryptographic techniques for performing password-based authentication and key establishment, supplemental to the techniques described in IEEE Std 1363-2000 and IEEE Std 1363a-2004. It includes specifications of primitives and schemes designed to utilize passwords and other low-grade secrets as a basis for securing electronic transactions, including schemes for password-authenticated key agreement and password-authenticated key retrieval.

定价： 110元 / 折扣价： 94 元

定价： 81元 / 折扣价： 69 元

This standard provides specifications of common public key cryptographic techniques based on hard problems over lattices supplemental to those considered in IEEE Std 1363-2000 [B47]1 and IEEE Std 1363a-2004 [B48], including mathematical primitives for secret value (key) derivation, public key encryption, identification and digital signatures, and cryptographic schemes based on those primitives. Specifications of related cryptographic parameters, public keys, and private keys are also presented. Class of computer and communications systems is not restricted.

定价： 110元 / 折扣价： 94 元

This standard provides a set of practical methods for managing functional safety and other risks due to electromagnetic (EM) disturbances throughout the life of a product. This includes all types of errors, malfunctions or failures in products, equipment, and systems that employ modern digital technologies (i.e., hardware and software).

定价： 164元 / 折扣价： 140 元

定价：

This International Standard is applicable to the measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages up to 400 Hz or with direct voltage. This standard - defines the terms used; - defines the quantities to be measured; - describes test and measuring circuits which may be used; - defines analogue and digital measuring methods required for common applications; - specifies methods for calibration and requirements of instruments used for calibration; - gives guidance on test procedures; - gives some assistance concerning the discrimination of partial discharges from external interference. The provisions of this standard should be used in the drafting of specifications relating to partial discharge measurements for specific power apparatus. It deals with electrical measurements of impulsive (short-duration) partial discharges, but reference is also made to non-electrical methods primarily used for partial discharge location (see annex F). Diagnosis of the behaviour of specific power apparatus can be aided by digital processing of partial discharge data (see annex E) and also by non-electrical methods that are primarily used for partial discharge location (see annex F). This standard is primarily concerned with electrical measurements of partial discharges made during tests with alternating voltage, but specific problems which arise when tests are made with direct voltage are considered in clause 11. The terminology, definitions, basic test circuits and procedures often also apply to tests with other frequencies, but special test procedures and measuring system characteristics, which are not considered in this standard, may be required. Annex A provides normative requirements for performance tests on calibrators.

定价： 189元 / 折扣价： 161 元

This document defines accepted best industry practices for the preparation of shielded medium voltage cables rated 2.5 kV through 46 kV and the installation of mating accessories.

定价： 80元 / 折扣价： 68 元

This document defines accepted best industry practices for the preparation of shielded medium voltage cables rated 2.5 kV through 46 kV and the installation of mating accessories.

定价： 75元 / 折扣价： 64 元

This document defines test design techniques that can be used during the test design and implementation process that is defined in ISO/IEC/IEEE 29119-2. Each technique follows the test design and implementation process that is defined in ISO/IEC/IEEE 29119-2 and shown in Figure 1. This document is intended for, but not limited to, testers, test managers, and developers, particularly those responsible for managing and implementing software testing.

定价： 160元 / 折扣价： 136 元

This document defines accepted best industry practices for the preparation of extruded dielectric shielded medium voltage cables rated 2.5 kV through 46 kV and the installation of mating accessories.

定价： 81元 / 折扣价： 69 元

This standard for determination of gamma-ray efficiencies of germanium semiconductor detectors was developed in recognition of the increasing number of large-volume, low-activity samples being measured by gamma-ray spectroscopy. The standardized sample geometry and measurement techniques described, when used in conjunction with the relative efficiency measurement standard ANSI/IEEE Std 325-1971 (Reaff 1977), Test Procedures for Germanium Gamma-Ray Detectors, provide a meaningful assessment of… read more detector performance. It is recognized that many Marinelli beaker geometries are in use. However, the object of this standard is to specify a single configuration for the sole purpose of characterizing detector performance. read less

定价： 56元 / 折扣价： 48 元

This guide provides the definition, formation, and characteristics of fast-front and very fast-front overvoltages. The various measuring techniques, including technical details that may be adopted for field application, are also described. Field measurement results measured using the techniques described in this guide are included for reference. This guide supports the development of field measuring systems for fast-front and very fast-front overvoltages in electric power systems (including… read more sensors, signal transmission devices, and recording instruments). This guide applies to single-phase Gas-Insulated switchgear (GIS) tubes, air insulated substations (AIS), and other equipment with a voltage level of 110 kV and above. read less

定价： 76元 / 折扣价： 65 元