Rotating electrical machines - Part 5: Degrees of protection by enclosures for rotating machinery
Describes definitions for standard degrees of protection provided by enclosures; protection of machines against harmful effects due to the ingress of water; designation for these protective degrees, and tests to verify that the machines meet the requirements.
This standard applies to the following types of reactors: shunt reactors, current-limiting reactors including neutral-earthing reactors, damping reactors, tuning (filter) reactors, earthing transformers (neutral couplers), arc-suppression reactors, smoothing reactors, with the exception of the following reactors: small reactors with a rating generally less than 2 kvar single-phase and 10 kvar…
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…
Methods of measurement for radio transmitters - Part 1: General conditions of measurement, frequency...
Deals with methods of measurement of a number of characteristics applicable to transmitter for all classes of emission. Standard conditions of measurement are specified which apply to these measurements, as well as to those described in the other specialized parts.
