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1. Scope 1.1 This Standard outlines the principles and general practices of electrical protection applicable to overhead supply systems operating at more than 750 V but less than 50 kV phase to phase and communications systems, where the lines of th

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C22.3 NO. 7-10 Underground systems 现行 发布日期 :  实施日期 : 

定价: 1502元 / 折扣价: 1277

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定价: 1229元 / 折扣价: 1045

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Preface This is the fourth edition of CSA C227.3, Low-profile, single-phase, pad-mounted distribution transformers with separable insulated high-voltage connectors. It supersedes the previous editions published in 1991, 1979, and 1974. 1 Scope

定价: 910元 / 折扣价: 774

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定价: 910元 / 折扣价: 774

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C22_2_211_1-06_EN Rigid Types EB1 and DB2/ES2 PVC Conduit 现行 发布日期 :  实施日期 : 

Preface This is the third edition of CSA C22.2 No. 211.1, Rigid types EB1 and DB2/ES2 PVC conduit, one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous editions

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This PDF includes Amd #1-#16. 1. Scope 1.1 This Standard applies to line-voltage wall thermostats, as defined in Clause 2.1, rated 300 V and less, complying with the requirements of CSA Standard C22.2 No. 24, Temperature- Indicating and -Regulating

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1. Scope 1.1 This Standard covers the installation requirements for unitary air-to-air heat pumps with cooling mode ratings up to 19 kW (65 000 Btu/h), normally used with electricity, oil, or gas as the supplementary heating source. 1.2 This Standa

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C282-09 Emergency electrical power supply for buildings 现行 发布日期 :  实施日期 : 

定价: 1001元 / 折扣价: 851

C310-09 Distribution class polymeric cutouts 现行 发布日期 :  实施日期 : 

定价: 1365元 / 折扣价: 1161

定价: 910元 / 折扣价: 774

定价: 2184元 / 折扣价: 1857

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