This guide is for the development of specifications for the technical requirements for the design, fabrication, testing, installation and in-service performance of high-voltage gas insulated substations (GIS) for alternating current applications rated above 52kV.

定价：

This standard covers the design, testing, and installation of metal-enclosed switchgear that incorporates gas (typically SF6) at higher than ambient pressure as an insulation medium for alternating-current applications rated above 1 kV to 52 kV. The contents of the switchgear may include but are not limited to circuit breakers, switches, bushings, buses, instrument transformers, cable terminations, instrumentation, metering and controls, and protective relays. This standard applies if within a… read more vertical section of the switchgear, some or all of the medium-voltage compartment(s) is composed of a gas pressure system for the primary insulating medium. This standard covers both indoor and outdoor installations. This standard covers switchgear using sealed pressure systems or closed pressure systems. Switchgear employing controlled pressure systems is not covered by this standard. This standard also does not cover switchgear that is covered under IEEE Std C37.20.2™, IEEE Std C37.20.3™, or IEEE Std C37.74™-2014 that uses individual components that are gas-insulated such as switches, circuit breakers, and other equipment, nor does it fully cover those components that are covered by their individual component standards. read less

定价： 130元 / 折扣价： 111 元

1.1 Scope This standard covers ac switches rated above 1 kV up to and including 52 kV for use in metal-enclosed switchgear. These switches may be: a) Stationary or drawout b) Manual or power operated c) Fused or unfused Within this standard, the words "switch(es)" shall be considered to mean three-phase, ac, gang-operated, switch(es) as defined by this scope. These switches are intended to be installed in an enclosure that provides a degree of protection to the switch and the enclosure may be… read more suitable for indoor or outdoor conditions and complies with the requirements of switchgear assemblies as defined by IEEE Std C37.20.2, IEEE Std C37.20.3, or IEEE Std C37.20.9. This standard does not apply to switches for use in subsurface or pad-mounted switchgear in IEEE Std C37.74 or to high-voltage air switches in IEEE Std C37.30.1. read less

定价： 67元 / 折扣价： 57 元

This standard is intended to set forth characteristics relating to performance, limited electrical and mechanical interchangeability, and safety of the equipment described, and to assist in the proper selection of such equipment. 1.2 This standard describes certain electrical and mechanical characteristics and takes into consideration certain safety features of 60-Hz, two-winding, three phase, sealed dry-type transformers rated 501 kVA and larger, generally used for step-down purposes. Specific… read more rating combinations are described in the range from 750 to 5000 kVA inclusive, with high-voltage 2400 to 34 500 volts inclusive and low-voltage 208Y/120 to 4160 volts inclusive. 1.3 This standard does not apply to other types of transformers, such as specialty, ventilated dry-type, pad-mounted dry type, liquid immersed, instrument, regulating, furnace, mine, and rectifier transformers. 1.4 When this document is used on a mandatory basis, the word "shall" indicates mandatory requirements, and the words read less

定价： 56元 / 折扣价： 48 元

This document gives the recommended practices for designing and installing the interfaces between existing gas-insulated substation (GIS) equipment and new GIS equipment that is added at a later date and may be of different design and of different manufacturer. The recommended practices apply for GIS rated above 52 kV. They also include the interfaces between gas-insulated line (GIL) equipment and GIS equipment rated above 52 kV.

定价： 81元 / 折扣价： 69 元