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This design of chokes is mostly applied in three-phase power transmission inverter systems. These reactors limit the inrush current and restrict a mutually interference of inverters, which are supplied from the same transformer. The commutation in systems with motor chokes proceeds softly and overvoltages are suppressed.
Line chokes ED3N are simultaneous protective elements limiting the harmonics propagation.
In the table are given data for rated voltage 400V. During the operation the measured voltage drop is 4%. The value of phase inductance [mH] can be calculated by an equation :

[mH]

where:
ΔU% - voltage drop in % resulting from the choke inductance
Un - rated phase-to-phase voltage [V]
In - rated current [A]
fn - rated frequency [Hz]

It is possible after prior settlement to produce chokes with other technical data and in various designs.

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Detaillierte Informationen:

Design	Chokes are produced according to : EN/IEC 61558-2-20; EN/IEC 60076-6
Insulation class	F(155^oC) - standard
Climatic class /environmental class	C1/E0 - land design; C2/E1 - maritime design
Ambient temperature	40^oC
Protection degree	IP 00
Harmonic number	1	3	5	7	11	13
Harmonic content (%) - I_1h	100	0	20	14	0	0
Phase shift	0	0	0	0	0	0
Frequency of 1-st harmonic	50 Hz
Rated voltage	U_n=400 V
Overload capacity	110%I_n
Voltage drop	4%U_n
Terminals	screw terminal blocks or cable lugs or copper bus bars
Fastening	by means of angles

Technische Skizze


Design A	Design B

Design C	Design D

Dimensionstabelle

Technical data of three-phase line chokes - 4%

Item	Chke type	Inductance [mH]	Current [A]	L [mm]	B [mm]	H [mm]	d [mm]	e [mm]	f [mm]	Weigh [kg]	Design
1	ED3N - 9,80/3	9,80	3	100	52	122	80	31	5 x 8	0,92	A
2	ED3N - 7,30/4	7,30	4	100	60	122	80	40	5 x 8	1,3	A
3	ED3N - 4,90/6	4,90	6	100	60	122	80	40	5 x 8	1,4	A
4	ED3N - 3,60/8	3,60	8	125	61	141	100	45	5 x 8	1,8	A
5	ED3N - 2,40/12	2,40	12	125	71	141	100	55	5 x 8	2,4	A
6	ED3N - 1,80/16	1,80	16	155	77	160	130	57	8 x 11	3,4	A
7	ED3N - 1,20/25	1,20	25	155	121	130	130	72	8 x 11	5,4	B
8	ED3N - 0,98/30	0,98	30	195	110	160	173	72	8 x 11	5,9	B
9	ED3N - 0,82/36	0,82	36	195	120	160	173	82	8 x 11	7,5	B
10	ED3N - 0,59/50	0,59	50	195	134	160	173	92	8 x 11	9,3	B
11	ED3N - 0,49/60	0,49	60	195	134	180	173	78	8 x 11	10,4	B
12	ED3N - 0,42/70	0,42	70	240	157	210	198	95	11 x 29	11,8	B
13	ED3N - 0,33/90	0,33	90	240	160	210	198	95	11 x 29	12,8	B
14	ED3N - 0,27/110	0,27	110	240	146	210	198	105	11 x 29	16,2	C
15	ED3N - 0,24/120	0,24	120	240	152	210	198	115	11 x 29	19,5	C
16	ED3N - 0,20/150	0,20	150	300	161	265	240	122	11 x 15	25	C
17	ED3N - 0,16/180	0,16	180	260	180	225	198	126	11 x 29	29	C
18	ED3N - 0,13/220	0,13	220	300	196	265	240	147	11 x 15	36,5	C
19	ED3N - 0,11/260	0,11	260	300	211	265	240	162	11 x 15	43,5	C
20	ED3N - 0,092/320	0,092	320	357	203	310	300	148	11 x 21	53	C
21	ED3N - 0,074/400	0,074	400	420	205	415	370	141	11 x 15	57	D
22	ED3N - 0,059/500	0,059	500	420	215	415	370	151	11 x 15	66	D
23	ED3N - 0,047/630	0,047	630	420	272	415	370	181	11 x 15	94	D
24	ED3N - 0,042/700	0,042	700	480	280	475	430	191	13 x 18	104	D
25	ED3N - 0,037/800	0,037	800	480	263	475	430	208	13 x 18	122	D
26	ED3N - 0,033/900	0,033	900	480	288	490	430	208	13 x 18	128	D
27	ED3N - 0,029/1000	0,029	1000	480	318	490	430	238	13 x 18	155	D
28	ED3N - 0,027/1100	0,027	1100	540	338	535	490	258	13 x 18	176	D
29	ED3N - 0,024/1250	0,024	1250	540	350	535	490	268	13 x 18	196	D