Methods of measurement for radio equipment used in satellite earth stations. Part 1: General
Defines certain terms used in this series of publications. Lays down the standard test conditions for the power supply and the environment, and also some conditions deviating from standard test conditions.
Acoustics — Standard tuning frequency (Standard musical pitch)
Specifies the frequency for the note A in the treble stave and shall be 440 Hz. Tuning and retuning shall be effected by instruments producing it within an accuracy of 0,5 Hz.
Specifies a method for determining the swelling properties of hard coal when heated under standard conditions in a dilatometer. In performing the method a pencil made of powdered coal formed under pressure is inserted into a precisely calibrated narrow tube and topped by a calibrated steel rod which slides in the bore of the tube. The whole is heated at a constant and definite rate. By making…
Methods for measuring the performance of electric warming plates for household and similar purposes
States and defines the principal performance characteristics of electric warming plates which are of interest to the user, and describes the standard methods for measuring these characteristics. Contains objective dimensions of the warming surface for the measuring methods concerning heating-up time, temperature of the warming surface, ability to keep warm, and temperature of the supporting…
Plugs and socket-outlets for domestic and similar general use. Standards.
Contains specification sheets for three groups of plugs and socket-outlets for domestic and similar general use:
Group A:American National Standards Institute (ANSI)
Group B:British Standards Institution (BSI)
Group C:International Commission on Rules for the Approval of Electrical Equipment (CEE)
This publication has the status of a technical report.
High-voltage metal-enclosed switchgear for rated voltages of 72.5 kV and above
Specifies requirements for gas-insulated metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating gas other than air at atmospheric pressure, for alternating current of rated voltages of 72.5 kV and above, for indoor and outdoor installation, and for service frequencies up to and including 60 Hz. For the purpose of this standard the term
Switching impulse tests on high-voltage insulators.
Applies to switching impulse tests on insulators intended for use on a.c. installations with highest voltage 300 kV and above. Defines switching impulse characteristics of insulators and prescribes the conditions under which the specified values of these characteristics shall be verified. Prescribes methods for switching impulse tests on insulators under standard conditions.
Safety in electro-heat installations - Part 2: Particular requirements for resistance heating equipm...
Cancels and replaces the previous edition which had the status of a report. Applies to direct and indirect resistance heating installations. Standardizes the safety requirements to be respected in the industrial furnaces energized with d.c. or a.c. single-phase or polyphase voltage of frequency up to 60 Hz.
