GB 7228-1987
电解整流设备的整流效率及其供电对象的电能利用率测算方法
Measuring and calculating method on efficiency of rectifiers and their consumers energy-conversion efficiency in electro-chemical industry
- 实施日期
- 1987-11-01
- ICS 分类
- 29.200
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB 7228-1987
Measuring and calculating method on efficiency of rectifiers and their consumers energy-conversion efficiency in electro-chemical industry
GB/T 7169-1987
Designation of alkaline secondary cell
GB 7000.7-1997
Safety requirements for floodlights
GB 6995.5-1986
Markings for electric cables and wires--Part 5:Identifications of insulated cores of power cables
GB 6995.4-1986
Markings for electric cables and wires--Part 4:Identifications of insulated conductors of cables and wires for electrical appliances and equipments
GB 6995.3-1986
Markings for electric cables and wires--Part 3:Identifications of cables and wires
GB 6995.2-1986
Markings for electric cables and wires--Part 2:Standard colours
GB 6995.1-1986
Markings for electric cables and wires--Part 1:General requirements
GB/T 5080.7-1986
Equipment reliability testing--Compliance test plans for failure rate and mean time between failures assuming constant failure rate
GB 6450-1986
Dry-type power transformers
GB 5585.1-1985
Copper or aluminium and its alloy bus bars for electrical purposes--Part 1:General
GB 5585.3-1985
Copper or aluminium and its alloy bus bars for electrical purposes--Part 3:Aluminium bus bar
GB 5590-1985
Mining type flameproof electric magnetic starters
GB 5585.2-1985
Copper or aluminium and its alloy bus bars for electrical purposes--Part 2:Copper bus bar
GB/T 4728.1-1985
Graphical symbols for electrical diagrams--General imformation
GB/T 6108.1-2003
Basic dimensions of winding wires--Part 1: Diameters of conductors for round winding wires
GB/T 4728.4-1999
Graphical symbols for diagrams--Part 4:Basic passive components
GB/T 4728.5-2000
Graphical symbols for diagrams--Part 5: Semiconductors and electron tubes
GB/T 5094.4-2005
Industrial systems,installations and equipment and industrial products-Structuring principles and reference designations-Part 4:Discussion of concepts
GB/T 5094.3-2005
Industrial systems,installations and equipment and industrial products-Structuring principles and reference designations-Part 3:Application guidelines