定价： 53元 / 折扣价： 46 元

This standard applies to switches rated 72.5 kV and above intended for use in metal-enclosed, gas-insulated substations, including disconnecting, interrupter, and grounding switches. These switches are characterized by grounded, leak-tight metal enclosures that are filled with a gas (most commonly sulfur hex-fluoride, SF6) at some pressure above atmospheric, with live parts contained within the housing and insulated therefrom by the gas and by suitable solid insulation that supports the live… read more parts in their proper position. Gas-insulated switches are normally electrically connected to and structurally joined to other gas-insulated components such as buses, gas-to-air bushings, circuit breakers, instrument transformers, cable terminations, etc. Switches may be manually or power operated. read less

定价： 150元 / 折扣价： 128 元

定价： 53元 / 折扣价： 46 元

This loading guide applies to ac high-voltage air switches in excess of 1000 V rated in accordance with IEEE Std C37.30-1992.1 This standard does not apply to switches used in enclosures covered by IEEE Std C37.20.2-1993, IEEE Std C37.20.3-1996, IEEE Std C37.23-1987, IEEE Std C37.71-1984, and ANSI C37.72-1987. Moreover, interrupter switches covered by IEEE. PC37.39 are excluded from the scope of this standard. If an air switch is equipped with a load-break device or interrupter, it may not… read more successfully interrupt currents above the nameplate rating. read less

定价： 141元 / 折扣价： 120 元

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

The terms and definitions in this standard cover all high-voltage enclosed and non-enclosed, indoor and outdoor air switches rated in excess of 1000 V used primarily in connection with generation, transmission, distribution, and conversion of electric power. 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: distribution cutouts fitted with disconnecting blades, and… read more 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： 57元 / 折扣价： 49 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 standard covers indoor ac switches rated above 1 kV through 38 kV for use in metal-enclosed switchgear as follows: a) Stationary or drawout b) Manual or power operation c) Fused or unfused The term ''indoor'' is intended to indicate that the enclosure provides a degree of protection to the switch and the enclosure may be suitable for indoor, outdoor, or other service conditions and complies with the requirements of switchgear assemblies as defined by IEEE Std C37.20.2TM or IEEE Std C37.20.3… read more TM.1 This standard does not apply to switches for use in subsurface or pad-mounted switchgear in IEEE Std C37.74TM or to high-voltage air switches in IEEE Std C37.30TM. Within this standard, the words "switch(es)" shall be considered to mean metal-enclosed, indoor, three-phase, ac medium-voltage switch(es) as defined by this scope. There are switch designs that have short-circuit current interrupting capability, and these devices are covered by this standard only to the extent of meeting the listed testing requirements. However, due to the additional capability, additional testing is required and the manufacturers should be consulted. read less

定价： 81元 / 折扣价： 69 元

The terms and definitions in this standard cover all high-voltage enclosed and non-enclosed, indoor and outdoor air switches rated in excess of 1000 V used primarily in connection with generation, transmission, distribution, and conversion of electric power. 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: distribution cutouts fitted with disconnecting blades, and… read more 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： 58元 / 折扣价： 50 元

This guide provides construction, application, and testing considerations for electric motor operators and accessories for use with high-voltage switches and interrupter switches rated above 1000 V, as covered in IEEE Std C37.30.1™ and IEEE Std C37.30.3™.

定价： 59元 / 折扣价： 51 元

This guide provides evaluation methods and application considerations for high-voltage (>1000 V) switches, as covered in IEEE Std C37.30.1(TM)-2011, under wind-loading conditions. This guide includes testing methods to meet both usual and unusual wind conditions.

定价： 65元 / 折扣价： 56 元

This standard provides the schedules of preferred ratings and construction specifications for high-voltage disconnect, interrupter, fault initiating, and grounding switches rated above 1000 volts. Switch operator control voltage ranges (formerly C37.33), bus supports and accessories are also covered by this standard. Switches included in C37.20.2, C37.20.3, C37.20.4, C37.71, C37.72 and C37.73 are not covered by this standard.

定价： 74元 / 折扣价： 63 元

This standard establishes specifications for high voltage (above 1000 volts) distribution class current limiting type fuses and associated accessories. All of these devices are intended for use on alternating current systems. These specifications apply to the following specific types of equipment: a) Distribution class current limiting type fuses and fuse units. b) Distribution class current-limiting fuse disconnecting switches. c) Items (a) thru (b) used in fuse enclosure packages (FEP) (see… read more types listed in Clause 1.1 below) d) Fuse supports, fuse units, refill units and fuse mountings of the type used exclusively with distribution class current limiting type fuses, and fuse disconnecting switches. e) Removable switch blades of the type used exclusively with distribution class current limiting type fuses, and fuse disconnecting switches. read less

定价： 74元 / 折扣价： 63 元

This standard covers basic design parameters and features for Non-Load Make or Break Direct Current Disconnect switches used on Transit systems for isolation applications.

定价： 0元 / 折扣价： 0 元

This project will be to review and revise the current ANSI/IEEE C37.71 to be consistent with other standards int his group and to include vault style switches.

定价： 141元 / 折扣价： 120 元