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

This recommended practice provides recommendations for determining the electrical performance and expected uncertainty of measurement of rectangular waveguide for 110 GHz and above.

定价: 56元 / 折扣价: 48

在线阅读 收 藏

This guide applies to single- and three-phase 50 Hz and 60 Hz MCCs rated not more than 600 V ac or 1000 V dc. The recommendations within this guide augment the existing requirements of applicable MCC standards (NEMA ICS 18 and UL 845/ NMX-J-ANCE/CSA C22.2 No. 254, collectively referred to as "base MCC standards"). In addition, this guide provides recommendations for electrical system design to help improve safety of the motor control system. The recommendations in this guide should be used in… read more conjunction with safety requirements and procedures as stipulated by appropriate workplace safety standards, site practices and procedures, and manufacturers' instructions. read less

定价: 81元 / 折扣价: 69

在线阅读 收 藏

This recommended practice provides supplementary information that enhances the user's knowledge and promotes the proper use of precision coaxial connectors.

定价: 89元 / 折扣价: 76

在线阅读 收 藏

This standard provides the preferred ratings for low-voltage ac (635 V and below) power circuit breakers,fused low-voltage ac (600 V and below) power circuit breakers, general purpose dc (325 V and below) power circuit breakers, and low-voltage dc (3200 V and below) power circuit breakers.

定价: 87元 / 折扣价: 74

在线阅读 收 藏

This guide applies to single- and three-phase 50 Hz and 60 Hz Motor Control Centers (MCCs) rated not more than 600 V ac or 1000 V dc. The recommendations within this guide augment the existing requirements of applicable MCC standards (NEMA ICS 18 and UL 845/ NMX-J-ANCE/CSA C22.2 No. 254, collectively referred to as "base MCC standards"). In addition, this guide provides recommendations for electrical system design to help improve safety of the motor control system. The recommendations in this… read more guide should be used in conjunction with safety requirements and procedures as stipulated by appropriate workplace safety standards, site practices and procedures, and manufacturers' instructions. read less

定价: 71元 / 折扣价: 61

在线阅读 收 藏
178 条记录,每页 15 条,当前第 12 / 12 页 第一页 | 上一页 | 下一页 | 最末页  |     转到第   页