QB/T 4251-2011
Primary-secondary quartz clocks for ships (English Version)
- Standard No.
- QB/T 4251-2011
- Language
- Chinese, Available in English version
- Release Date
- 2011
- Published By
- Professional Standard - Light Industry
- Latest
- QB/T 4251-2011
- Scope
- This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and installation of quartz master clocks for ships. This standard is applicable to a quartz master clock system consis ing of a master clock and multiple analog slave clocks connected through wired connections. Other single analog quartz clocks used on ships can refer to the relevant content of this standard on the use of neutron clocks.
QB/T 4251-2011 Referenced Document
- GB 4208 Degrees of protection provided by enclosure(IP code)
- GB/T 17626.2-2006 Electromagnetic compatibility Testing and measurement techniques Electrostatic discharge immunity test
- GB/T 17626.3-2006 Electromagnetic compatibility Testing and measurement techniques Radiated, radio-frequency, electromagnetic field immunity test
- GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*， 2013-02-15 Update
- GB/T 8355-1987 General technical specifications for marine electrical measurement and control instruments
QB/T 4251-2011 history
- 2011 QB/T 4251-2011 Primary-secondary quartz clocks for ships
