Rechercher

This National Standard of Canada is equivalent to International Standard ISo 9075:1987. 1. Scope and field of application This standard specifies the syntax and semantics of tow databases languages: 1) A schema definition language (SQL-DDL), for declaring the structures and integrity constraints of an SQL database. 2) A module language and a data manipulation language (SQL-DML),…

Applies to zinc-coated steel wires used in the construction and/or reinforcement of conductors for overhead power transmission purposes, and is intended to cover all wires used in construction where the individual wire diameters, including coating, are in the range of 1.25 mm to 5.50 mm. Three grades of steel are included to reflect the needs of conductor users: regular steel, high strength steel…

Gives recommendations to the manufacturer and the user of printed boards on rework, repair and modification of printed boards. The recommendations are partly applicable to printed board assemblies also.

1. Scope 1.1 This Standard specifies a set of technical requirements and test methods for solar collectors and covers component materials, materials performance, operating performance, and marking requirements. 1.2 This Standard applies to solar collectors used for conver ting solar radiation into thermal energy. It covers only collectors with an aperture area of not less than 0.5 m²…

1. Scope and Purpose 1.1 Scope This Standard covers the occupational health and safety requirements for all classes of power forging machinery, both for impression die and flat die forging, including power-driven and gravity-drop hammers; mechanical, hydraulic, and screw-fo rging presses; hot trimming presses; upsetters; forging rolls; ring-rolling; bolt-heading; and rivet-making machines…

States and defines the principal performance characteristics of electric storage water-heaters which are of interest to the user and to describe the standard methods for measuring these characteristics. This standard is concerned neither with safety nor with performance requirements.

Gives recommendations applying to tape automated bonding (TAB) of integrated circuits. Dimension values or requirements given in this standard for tape width, perforations, test pattern, outer lead bonding (OLB), etc., correspond to the state of the market at the date of edition of this standard. More especially, tape width and perforation dimensions have been derived from motion picture film…

Gives the characterisitcs of two types of clothing: ventilated-pressurized garments and unventilated-unpressurized garments. These characteristics include the manufacture materials, design and size, accessories, breathing air supply and internal ventilation. Annex A describes a test method according to which any new type of garment can be assigned a protection factor that makes it easier for the…

Applies to a.c. circuit-breakers designed for indoor or outdoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V. Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems are subject to agreement…

1. Scope 1.1 This Standard covers the protection from lightning of buildings such as residences, places of public assembly, and buildings of a general industrial nature, including structures with explosive or highly flammable contents. It does not cover th e protection of electrical transmission and distribution systems, and communications systems. 1.2 This Standard also contains a…