{}

Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.
How can we help you today?
What is Insulation level Ud (kV rms 1 min) and Up (kV peak)?
This defines the dielectric withstand of equipment to power frequency over voltages and lightning impulses.

Ud: Over voltages of internal origin, accompany all changes in the circuit: opening or closing a circuit, breakdown or shorting across an insulator, etc… It is simulated in a laboratory by the rated power-frequency withstand voltage for one minute.

Up: Over voltages of external origin or atmospheric origin occur when lightning falls on or near a line. The voltage wave that results is simulated in a laboratory and is called the rated lightning impulse withstand voltage.

N.B.: IEC 62271-1, article 4 sets the various voltage values together with, in article 6, the dielectric testing conditions.

Schneider Electric India

Explore more
Range:
Articles that might be helpful Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Explore more
Range: