定价：

定价：

This standard applies to two terminal or multiple terminal silicon avalanche breakdown diodes (ABD), which are one type of surge protective device component (SPDC). In this document, these devices will be called ABDs. ABDs limit (clamp) transient voltages and divert transient currents. This standard contains terms, symbols and definitions, and provides test methods for verifying ratings and measuring device characteristics. Service conditions and failure mode are also provided. This standard… read more may also apply to other silicon surge protective device components with similar V-I characteristics. read less

定价： 130元 / 折扣价： 111 元

This standard sets forth information code requirements for overhead, pad-mounted, and subsurface distribution transformers and step-voltage regulators. Included are requirements for data content, symbology, layout, and life expectancy. This standard assumes the existence of user databases so information codes need only carry basic identification data.

定价： 56元 / 折扣价： 48 元

This guide presents suggestions on application, installation, operation, and maintenance as an aid to obtaining satisfactory performance of indoor and outdoor high-voltage air disconnecting and interrupter switches rated in excess of 1000 Vac.It is offered in recognition of the continuing need for general guidelines to supplement, but not replace, the manufacturer's or user's detailed instructions on installation, operation, and maintenance of disconnecting and interrupter switches.

定价： 127元 / 折扣价： 108 元

This recommended practice specifies the requirements for 1.5 kV to 35 kV medium-voltage dc (MVDC) transformers (DCTs), including functional, performance, and test requirements. This recommended practice also provides the definitions, topology and configuration, primary equipment, control and protection requirements, interface specifications, auxiliary system requirements, and application scenarios for medium voltage transformers in distribution systems.

定价： 72元 / 折扣价： 62 元

This standard sets forth bar-code label requirements for overhead, pad-mounted, and underground-type distribution transformers and step-voltage regulators. Included herein are requirements for data content, symbology, label layout, print quality, and label life expectancy. This standard assumes the existence of central transformer databases within utility companies so that bar-code labels need only carry basic transformer identification data.

定价： 55元 / 折扣价： 47 元

This standard sets forth information code requirements for overhead, pad-mounted, and subsurface distribution transformers and step-voltage regulators. Included are requirements for data content, symbology, layout, and life expectancy. This standard assumes the existence of user databases so information codes need only carry basic identification data.

定价： 80元 / 折扣价： 68 元

This standard establishes the 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. Performance requirements for portal monitors with radionuclide identification capabilities are addressed by the ANSI N42.38 standard [B19]. Performance requirements for mobile and transportable systems are addressed by the… read more ANSI N42.43 standard [B20]. read less

定价： 106元 / 折扣价： 91 元

This recommended practice provides analytical methods, preferred interconnection interfaces, performance characteristics and testing for applying 1 kV to 35 kV MVDC power distribution and dc power-delivery systems on ships.

定价： 83元 / 折扣价： 71 元

This standard establishes definitions, service conditions, ratings, interchangeable construction features, and tests for loadbreak and deadbreak separable insulated connector systems rated 900 A or less for use on shielded power distribution systems rated 2.5 kV through 35 kV.

定价： 104元 / 折扣价： 89 元

This standard covers design tests for shield resistance, simulated touch current and a simulated fault-current initiation for insulation shields used on cable accessories, specifically 15 kV through 35 kV class joints and separable insulated connectors.

定价： 57元 / 折扣价： 49 元

This document provides general guidelines for the preparation of a functional specification for solid state electronic devices used mainly for compensation of voltage fluctuation. The guide covers devices rated to medium voltage (1 kV-35 kV). This device contains in general :an inverter, rectifier or dc to dc converter, energy storage device, injection transformer connected in series with the load and normally open by-pass switch. In order to interface these devices with the load additional… read more equipment should be provided including current and potential transformer bypass and isolation breakers and three -phase low voltage service for auxiliary power. read less

定价： 119元 / 折扣价： 102 元

This document provides general guidelines on the preparation of a functional specification for a solid-state electronic shunt device used mainly to compensate for voltage fluctuation. The guide covers devices rated to medium voltage (1 kV to 35 kV). In general, these devices contain: a bidirectional converter, an energy storage device, and a coupling transformer connected in parallel. The guide also covers the following equipment to assure proper interface with the electric network including,… read more but not limited to, voltage and current transformers, disconnect switches, circuit breakers, and three-phase low voltage service for auxiliary power. Normally these devices are not designed for flicker compensation. If flicker compensation is needed, the specification may be modified and the manufacturer can design the device for flicker compensation. read less

定价： 59元 / 折扣价： 51 元