Ensembles d'appareillage à basse tension - Partie 3: Règles particulières pour ensembles d'...
This standard gives supplementary requirements for enclosed distribution boards (DBU), which are stationary, type-tested assemblies (TTA) for indoor use, containing protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use.
Cette version consolidée comprend la première édition (1990),
son amendement 1…
Paper, board and pulp — Determination of water-soluble sulfates
This International Standard specifies a method for the determination of water-soluble sulfates in all types of pulp,
paper and board. The lower limit of the determination is 20 mg of sulfate ion per kilogram of dry sample.
Information technology — Open Distributed Processing — Type Repository Function
The concept of "type" is fundamental to ODP systems; the interaction model of ODP-RM involves strongly-typed
interactions.
This Recommendation | International Standard:
? defines a framework for describing types of interest in ODP systems by determining what entities need to
be typed and what needs to be said about the identified types. The primary focus of this work is the…
Information technology - Open Distributed Processing - Type Repository Function
The concept of "type" is fundamental to ODP systems; the interaction model of ODP-RM involves strongly-typed
interactions.
This Recommendation | International Standard:
? defines a framework for describing types of interest in ODP systems by determining what entities need to
be typed and what needs to be said about the identified types. The primary focus of this work is the…
Agricultural vehicles — Mechanical hook-type connections on towing vehicles — Test methods and requi...
This International Standard specifies a dynamic test method for mechanical hook-type connections and hook
coupling devices, as well as a static test of their keeper plates. It is applicable to hooks meeting the requirements of
ISO 6489-1 used on towing vehicles with an unladen mass of up to 10 t. Towing vehicles with a greater unladen
mass are nevertheless treated as 10 t towing vehicles,…
1. Scope
1.1 General
This Standard covers steel valves primarily intended for use in oil or gas
pipeline systems. The following types of valves are covered:
(a) gate valves;
(b) plug valves;
(c) ball valves; and
(d) check valves.
1.2 Size, Nominal Pressure Class, and Category
1.2.1 Size
This Standard covers valves in sizes from NPS 2 to NPS 60, inclusive. (Refer
to…
Performance Test Method for Uninterruptible Power Supplies
1. Scope
1.1
This Standard specifies the test method to be used in measuring the electrical characteristics of uninterruptible power supplies. It applies to the following general types of
UPS systems:
(a) standby;
(b) on-line; and
(c) line interactive.
The UPS systems to be evaluated may be used to operate any type of linear or nonlinear load.
1.2
This Standard outlines the tests to be used…
