Gives the requirements for 127 mm and 203 mm connections for the purpose of air-conditioning from ground sources. The conncetions shall comply with the basic dimensional requirements shown in either figure 1 or figure 2 as appropriate. The ground unit must not project more than 14,O mm beyond the sealing plane except through defined openings.
Fluid flow in closed conduits — Connections for pressure signal transmissions between primary and se...
Describes means whereby a pressure signal from a primary element can be transmitted by known techniques to a secondary device in such a way that the value of the signal is not distorted or modified even though it may be changed into a signal of a different nature. Is concerned only with the pressure difference techniques of flow measurement.
Gives the dimensions of 19 mm and 38 mm bore pressure connections. A space envolope is also specified for each size of connection. Dimensions and tolerances for connections are given in figures 1 and 3, and those for space envelopes in figures 2 and 4. The values are listed in tables.
Recommendation for capacitors for inductive heat generating plants operating at frequencies between ...
Applies to indoor capacitor units and indoor capacitor banks complete with accessories which are intended for connection to adjustable a.c. voltage systems, to operate in a frequency range from 40 to 24 000 Hz, for power factor correction, especially for inductive heating; and also for otherwise modifying the characteristics of a circuit, such as voltage and frequency. It applies to capacitors…
Recommandation concernant les condensateurs pour les installations de génération de chaleur par indu...
S'applique tant aux condensateurs unitaires de type intérieur qu'aux batteries de condensateurs de type intérieur, avec leurs accessoires, qui sont destinés à être connectés à un circuit à tension alternative réglable, à fonctionner dans une gamme de fréquences comprise entre 40 Hz et 24 000 Hz, à améliorer le facteur de puissance du circuit, en particulier pour les installations de…
Voltage bands for electrical installations of buildings
Applies to a.c. electrical installations of buildings supplied at a frequency not exceeding 60 Hz and at a nominal voltage up to and including 1 000 V. Defines two voltage bands: Band I covers the installations where protection against shock is provided under certain conditions by the value of voltage and the installations where the voltage is limited for operational reasons (e.g.…
