This part of GB/T 21561 specifies the mechanical, pneumatic and electrical interfaces between pantograph and rolling stock for mainline vehicles. This part applies to the electric locomotives and rolling stock for mainline vehicles.
This Part specifies the method for determination of aluminum content in silicon metal. This Part applies to the determination of aluminum content in silicon metal. Determination range (mass fraction): 0.02%~0.30%.
HJT 75-2007 specifies the main technical targets, test items, installation location, commissioning testing methods, inspection methods, the daily operation and management, daily operation of quality assurance, data auditing and reporting format of the data of the particulate matter CEMS, gaseous pollutants (including SO2, NO, etc.) CEMS and related exhaust parameters (oxygen, etc.) of Continuous Emissions Monitoring Systems, CEMS.
This part specifies the hydrofluoric acid gravimetric method to determine silicon dioxide. This part applies to the determination of silicon dioxide in silica refractories. Measuring range (mass fraction) is greater than 95.00%.
This Standard specifies the hexagon nuts for structural bolting - thread specification is M12-M36, the performance grades are 8 and 10, the product grade is B, and used with grades 8.8 and 10.9 bolts. Other technical requirements shall be selected from current standards (such as GB/T196, GB/T197 and GB/T3098.2). The nuts specified in this Standard shall be matched with appropriate bolts (such as GB/T18230.1 or GB/T18230.2), so as to effectively prevent the connectors from thread tripping due to over-twisting. Hot-dipped galvanized nuts can provide 6H thread tolerance zone after galvanization according to the agreement by the supplier and purchaser. 6H hot-dipped galvanized nuts must be matched with 8.8s U or 10.9s U hot-dipped galvanized bolts, and thread tripping may occur due to over-twisting.
This Part specifies the requirements such as duty, quota, environmental conditions, technical requirements, inspection test item and type test of the electrical machines and controllers of electric vehicles. This Part applies to the electrical machines and controllers for electric vehicles. All the items relevant to electrical machines which are not specified in this Part shall comply with GB 755-2000. If there are special requirements, the user and manufacturer may specify them in special technical agreement. All the items relevant to driving controllers which are not specified in this Part shall comply with GB/T 3859.1-1993. If there are special requirements, the user and manufacturer may specify them in special technical agreement.
This Standard defines the test methods and expected test results of the physical, electrical and logical characteristics of USIM-ME Cu interface. The present document specifies the tests of: physical characteristics of Cu interface, electrical characteristics of Cu interface, initial communication establishment and the transport protocols as well as the application independent procedures. This Standard applies not only for tests of Cu interface between USIM and TD-SCDMA mobile equipment, but also for tests of Cu interface between USIM and WCDMA mobile equipment.
This Standard is applicable to mains-powered or battery-powered information technology equipment, including electrical business equipment and associated equipment, with a RATED VOLTAGE not exceeding 600 V. This Standard is also applicable to such information technology equipment: designed for use as telecommunication terminal equipment and TELECOMMUNICATION NETWORK infrastructure equipment, regardless of the source of power; designed to use the AC MAINS SUPPLY as a communication transmission medium. This Standard specifies requirements intended to reduce risks of fire, electric shock or injury for the OPERATOR and layman who may come into contact with the equipment and, where specifically stated, for a SERVICE PERSON. This Standard is intended to reduce such risks with respect to installed equipment, whether it consists of a system of interconnected units or independent units, subject to installing, operating and maintaining the equipment in the manner prescribed by the manufacturer.