Three-phase protective chokes for harmonics filtration in compensation 7%; 440V aluminum windings

Chokes are assigned for operation in reactive power compensation systems to protect capacitive batteries. Together with capacitors, they form resonance systems which limit amplitude of harmonics currents.
It is possible to manufacture the chokes with various coil terminals like screw terminal blocks, cable lugs or copper bus bars, depending on the rated current. There is also a possibility to insert sensors in windings, in order to protect the chokes against overheating.

Download catalog card in PDF

Product for:


Design Chokes are produced according to : EN/IEC 61558-2-20; EN/IEC 60938
Windings material aluminum
Insulation class

F(155oC) - standard

Climatic class
/environmental class

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

Ambient temperature 40oC - land design, 45oC - maritime design
Protection degree IP 00
Rated voltage of capacitors 440 V
Rated supply voltage 400 V
Frequency 50 Hz
Attenuation coefficient [p] 7% (fr=189 Hz)
Magnetic linearity ILIN-1,15*In
Thermal current 1,06 x In


Technical sketch

Wykonanie standardowe

Standard version

Dimension table


Technical data for rated voltage of capacitive battery 440V

Type of the choke
Power of battery
ED3F-26,6/400/7-30/440 AL 30 1,44 38,5 240 125 210 198 105 11 x 29 13,3
ED3F-35,5/400/7-40/440 AL 40 1,08 51,3 240 155 210 198 115 11 x 29 16,3
ED3F-44,4/400/7-50/440 AL 50 0,86 64,1 240 170 210 198 129 11 x 29 20,2
ED3F-53,3/400/7-60/440 AL 60 0,72 77 300 160 270 240 120 11 x 15 23,2
ED3F-66,6/400/7-75/440 AL 75 0,58 96,2 300 175 270 240 133 11 x 15 28,5
ED3F-88,8/400/7-100/440 AL 100 0,43 128,3 357 175 310 300 131 11 x 21 38,8

QLC - rated reactive power of LC circuit (choke-capacitor)
ULC - rated voltage of the LC circuit
p - attenuation coefficient
QC - rated reactive power of the capacitive battery
UC - rated voltage of the capacitive battery
LN - rated inductance of the protective choke
IN - rated current of the LC circuit


Manufacturer reserves the right to make changes resulting from the continuous development of products offered.

If requested in advance, it is possible to manufacture a choke in other version.

For designs with climatic/environmental class C2/E1 the letter "M" ought to be added

Obudowa leżąca IP 23 dla urządzeń trójfazowych

for horizontal mounting IP23

Obudowa naścienna IP 23 dla urządzeń trójfazowych

wall mounted IP23

Obudowa stojąca IP 23 dla urządzeń trójfazowych

for vertical mounting IP23

Obudowa stojąca IP 44 dla urządzeń trójfazowych

vertical design IP44

Obudowa stojąca IP 54 dla urządzeń trójfazowych

vertical design IP54

ask about this product

Quality supported by certificates

ELHAND PQ – Elhand Power Quality Harmonic Simulation Software

ELHAND PQ is charge-free software that allows to find the optimum solution for different configurations and parameters of your circuit without the need for costly measurements, tests and analyses. More >>

Important: The website uses cookies.

We use information saved using cookies and similar technologies, including for advertising purposes and statistical and to adapt the website to the individual needs of users. the use of website without changing the cookie settings means that they will be stored on your device final. You can change your cookie settings at any time. More information can be found in our "Cookies Policy".