DIN EN IEC 60383-1:2024-12

This part of IEC 60383 applies to insulators of ceramic material or glass for use on a.c. overhead power lines and overhead traction lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators for use on d.c. overhead electric traction lines. This part applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations. Tests on insulator strings and insulator sets (for example, wet switching impulse voltage) are dealt with in Part 2 of IEC 60383. The object of this document is: - to define the terms used; - to define insulator characteristics and to prescribe the conditions under which the specified values of these characteristics shall be verified; - to prescribe test methods; - to prescribe acceptance criteria. This document does not include requirements dealing with the choice of insulators for specific operating conditions. Specific requirements on the use of coatings on ceramic or glass insulators are described in the informative Annex C. Numerical values for insulator characteristics are specified in IEC 60305, IEC 60433 and IEC 60720. A guide for the choice of insulators under polluted conditions has been published, see IEC 60815-1 and -2. This part does not apply to insulators that are part of electrical equipment, or to parts used in their construction, or to post insulators covered by IEC 60168, Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 000 V. The standard differs from DIN EN 60383-1 (VDE 0446-1):1997-05 and DIN EN 60383-1 Corrigendum 1 (VDE 0446-1 Corrigendum 1):2001-08 as follows: a) the entire document has been revised and updated. The structure of the document has been changed to improve readability; b) the RIV test has been added (Clause 14); c) impulse puncture testing in air has been added (15.2); d) the residual strength test was added (Clause 21); e) the zinc sleeve test has been added (Clause 28); f) the impact test has been added (Clause 30); g) Annex C on coatings on ceramic and glass insulators has been added; h) Annex D on impact testing has been added.