IEC - TR 63434
Low voltage switchgear and controlgear – Partial discharge voltages and PD-level in low voltage switchgear and controlgear
Organization: | IEC |
Publication Date: | 1 September 2023 |
Status: | active |
Page Count: | 44 |
ICS Code (Low voltage switchgear and controlgear): | 29.130.20 |
scope:
This document is intended to provide awareness about partial discharge phenomena. This document gives guidance for some conditions when partial discharge can occur in low voltage switchgear and controlgear connected to networks of up to 1 000 V AC. Internal operational voltages can exceed these values. This document gives guidance on the design of conductors and dimensioning of insulation exposed to electrical fields.
This document explains the partial discharge phenomena considering electrical field stress, type of insulation material and other construction parameters, such as the voltage, frequency, temperature, humidity and the distances within the device.
This document does not cover:
• phenomena associated with semiconductor power switching by effects on equipment placed downstream of semiconductor power switching systems;
• partial discharge test procedures (see IEC 60270) [2];
• pure DC systems which are under consideration;
• selection of solid insulation material.
Document History
