DIN EN 61211:2005 Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1000 V - Impulse puncture testing in air (IEC 61211:2004); German version EN 61211:2005
2005DIN EN 61211:2005 Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1000 V - Impulse puncture testing in air (IEC 61211:2004); German version EN 61211:2005