微信公众号随时随地查标准

QQ交流1群(已满)

QQ群标准在线咨询2

QQ交流2群

购买标准后,可去我的标准下载或阅读

DB53/T 123.1-2005 通海无公害花椰菜综合标准 废止 发布日期 :  2005-09-28 实施日期 :  2005-12-31

定价: 0元 / 折扣价: 0

在线阅读 收 藏
DB53/T 123.2-2005 通海无公害花椰菜栽培技术规范 废止 发布日期 :  2005-09-28 实施日期 :  2005-12-31

定价: 0元 / 折扣价: 0

在线阅读 收 藏

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: 97

在线阅读 收 藏

This guide is for the development of specifications for the technical requirements for the design, fabrication, testing, installation, and in-service performance of a high-voltage gas-insulated substation (GIS).

定价: 82

在线阅读 收 藏

This guide provides background information and general recommendations of instrumentation, circuitry, calibration, and measurement techniques of no-load losses (excluding auxiliary losses), excitation current, load losses of power, and distribution transformers. The test codes, namely, IEEE Std C57.12.90™, IEEE Std C57.12.91(TM), and the test code section of IEEE Std C57.15(TM) provide specifications and requirements for conducting these tests. This guide has been written to provide… read more supplemental information for each test. More technical details of the measuring instruments and techniques presented in this guide can be found in the document developed by So [B23]. This guide applies to liquid-immersed power and distribution transformers, dry-type transformers, and step-voltage regulators. Additionally, it applies to both single- and three-phase transformers. read less

定价: 82元 / 折扣价: 70

在线阅读 收 藏

This guide is for the development of specifications for the technical requirements for the design, fabrication, testing, installation, and in-service performance of a high-voltage gas-insulated substation (GIS).

定价: 84元 / 折扣价: 72

在线阅读 收 藏
261 条记录,每页 15 条,当前第 18 / 18 页 第一页 | 上一页 | 下一页 | 最末页  |     转到第   页