GB/T 17215.421-2008
交流测量-费率和负荷控制 第21部分:时间开关的特殊要求
Electricity metering equipment (a.c) - Tariff and load control - Part 21: Particular requirements for time switches
- 实施日期
- 2009-03-01
- ICS 分类
- 17.220.20
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。
找到 1,579 条
GB/T 17215.421-2008
Electricity metering equipment (a.c) - Tariff and load control - Part 21: Particular requirements for time switches
GB/T 22264.1-2008
Mounted digital display electric measuring instruments - Part1: Definitions and general requirements common to all parts
GB/T 9248-2008
Methods of evaluating the performance of flowmeters for incompressible fluids
GB/T 14055.1-2008
Reference neutron radiations - Part 1: Characteristics and methods of production
GB/T 22183-2008
Test sieves for cereals
GB/T 5898-2008
Hand-held non-electric power tools - Noise measurement code - Engineering method(grade 2)
GB/T 14058-2008
Apparatus for gamma radiography
GB/T 7352-2008
Electrical measuring systems and instruments utilizing ionizing radiation source
GB/T 15636-2008
Thickness gauges utilizing ionizing radiation
GB/T 13980-2008
Density gauges utilizing ionizing radiation
GB/T 11923-2008
Level meter utilizing ionizing radiation
GB/T 4854.7-2008
Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
GB/T 4854.5-2008
Acoustics - Reference zero for the calibration of audiometric equipment- Part 5: Reference equivalent threshold sound pressure levels for pure tone in the frequency range 8 kHz to 16 kHz
GB/T 22159.3-2008
Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 3: Indirect method for determination of the dynamic stiffness of resilient supports for translatory motion
GB/T 22156-2008
Acoustics - Procedure for the comparison of noise-emission data for machinery and equipment
GB/T 16538-2008
Acoustics - Determination of sound power levels of noise sources using sound pressure - Comparison method in situ
GB/T 14056.1-2008
Evaluation of surface contamination - Part 1: Beta-emitters (maximum beta energy greater than 0.15 MeV)and alpha emitters
GB/T 12164.1-2008
Reference beta radiations - Part 1: Methods of production
GB/T 22157-2008
Acoustics - Specification of test tracks for the purpose of measuring noise emitted by road vehicles
GB/T 15446-2008
Terminology relating to radiation processing dosimetry