Dimensions of indoor and outdoor post insulators and post insulator unit for systems with nominal vo...
This edition supersedes the second edition of IEC 273 (1979).
Applies to post insulators and post insulator units of ceramic material or glass intended for indoor or outdoor service, and to post insulators of organic material intended for indoor service in electrical installations or equipment operating on alternating current systems with a nominal voltage greater than 1 000 V and a frequency not…
Applies to sound systems of any kind, and to the parts of which they are composed or which are used as auxiliaries to such systems. Deals with the determination of the performance of sound system equipment, the comparison of these types of equipment and the determination of their proper practical application, by listing the characteristics which are useful for their specification and laying down…
High-voltage fuses - Part 1: Current-limiting fuses
Applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating current systems of 50 Hz and 60 Hz and of rated voltages exceeding 1 000 V.
Note: - For the correct operation of the striker of the fuse-link in combination with the tripping device of the switching device, see IEC 420.
Conventional signs to be used in schemes for the installations of ventilation systems in ships
The symbols given in tables have been classified in the following manner: - General conventional signs, - Ducts and duct joints, - Appliances and fittings, - Ventilators, - Various conventional signs. The general conventional signs concern symbols representing principal parts and appliances.
