Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V Part 1 Ceramic or Glass Insulator Units for a.c. Systems — Definitions, Test Methods and Acceptance Criteria
Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V: Part 2 Insulator Strings and Insulator Sets for a.c. Systems - Definitions, Test Methods and Acceptance Criteria
