EMC Output Filter for VFD, 6A/20A/80A/150A/300A to 1000A

3-phase EMC output filters are used to suppress the interference of the VFD output side to the load. It is greatly hulpful to solve the problems of load heating, howling, etc. that are easily generated during long-distance transmission of the variable frequency device. It works better with the reactor. With current rating from 6A, 15A, 30A, 50A, 80A to 1000A, the VFD output filter works at AC 250/440V 50/60Hz to effectively restrain the common-mode interference on the load transmission lines so as to protect the load and extend the load's service life.

Applications: The EMC output filters are suitable for variable frequency drives, servomotors, frequency converters and and other industrial equipment that require long-distance transmission.

Specification

1. Technical Data

2. Selection Table

Model	Rated Current @40℃	VFD Power (kVA)	Dimension	Connection		Weight (kg)
ATO-MT730T-6	6A	1.5	Fig.1	M4	—	1.2
ATO-MT730T-10	10A	3.0	Fig.1	M4	—	1.2
ATO-MT730T-15	15A	5.5	Fig.1	M4	—	1.3
ATO-MT730T-20	20A	7.5	Fig.1	M4	—	1.7
ATO-MT730T-25	25A	11.0	Fig.2	M6	—	1.8
ATO-MT730T-30	30A	15.0	Fig.2	M6	—	1.8
ATO-MT730T-40	40A	18.5	Fig.2	M6	—	1.8
ATO-MT730T-50	50A	22.0	Fig.3	M6	—	3.2
ATO-MT730T-60	60A	30.0	Fig.3	M6	—	3.2
ATO-MT730T-80	80A	37.0	Fig.3	M8	—	3.5
ATO-MT730T-100	100A	45.0	Fig.3	M8	—	3.5
ATO-MT730T-120	120A	55.0	Fig.3	M8	—	6.5
ATO-MT730T-150	150A	75.0	Fig.4	M10	—	6.7
ATO-MT730T-200	200A	95.0	Fig.4	M10	—	11
ATO-MT730T-300	300A	110/132	Fig.6	—	O	14
ATO-MT730T-400	400A	160	Fig.6	—	O	14
ATO-MT730T-500	500A	200	Fig.6	—	O	21
ATO-MT730T-630	630A	315	Fig.6	—	O	21
ATO-MT730T-800	800A	375	Fig.6	—	O	21
ATO-MT730T-1000	1000A	450	Fig.6	—	O	21

Dimensions (Unit: mm)

Tips: Working principle of EMC filter for VFD

The interference signal has two modes: differential mode and common mode, so the filter for VFD should have attenuation for both types of interference. There are three basic principles:
1. Take advantage of the characteristics of capacitor - high frequency passing and low frequency isolating, to direct the high-frequency interference currents of the live and neutral lines to the ground (common mode), or direct the high-frequency interference currents of the live line to the neutral (differential mode).
2. Use the impedance characteristics of the inductor to reflect the high-frequency interference current back to the interference source.
3. The interference suppression ferrite can be used to absorb the interference signal of a certain frequency band and convert it into heat. Therefore, for the frequency band of a certain interference signal, the appropriate interference suppression ferrite magnetic ring or magnetic beads can be selected and directly placed on the cable that needs filtering.