Single-phase line chokes


The ED1N line chokes are used in single-phase supply systems, usually for protecting power thyristors and transistors against rapid growth of current. Moreover, the line chokes limit commutation over-voltages in the circuit and backward current impulse amplitude when switching off thyristors. The line chokes also function as protectors of the supply network against higher harmonic propagation.
The range of possible versions is limited by the following equation:

0,05 < 2π f x L x I2 x 10-6 < 100

where: f - [Hz], L - [mH], I - [A]

Technical data

Design Chokes are produced according to :
EN/IEC 61558-2-20;
EN/IEC 60076-6
Insulation class

F(155oC) - standard

Climatic class
/environmental class

C1/E0 - land design; C2/E1 - maritime design

Ambient temperature 40oC
Protection degree IP 00
Frequency 50 Hz
Rated voltage up to 750 V
Terminals screw terminal blocks or cable lugs
Fastening by means of angles