Emi Suppression Zero Phase Core - TECO speecon 7200ma Instruction Manual

B. EMI SUPPRESSION ZERO PHASE CORE
•Model : JUNFOC046S
•Code No. : 4H000D0250001
•According to the required power rating and wire size, select the matched ferrite
core to suppress EMI noise.
•The ferrite core can attenuate the frequency response at high frequency range
(from 100KHz to 50MHz, as shown below). It should be able to attenuate the
RFI from inverter to outside.
•The zero-sequence noise ferrite core can be installed either on the input side or
on the output side. The wire around the core for each phase should be winded by
following the same convention and one direction. The more winding turns the
better attenuation effect. (Without saturation). If the wire size is too big to be
winded, all the wire can be grouped and go through these several cores together
in one direction.
•Frequency attenuation characteristics (10 windings case)
0
-10
-20
-30
-40
1
10
Example: EMI suppression zero phase core application example
Note: All the line wire of U/T1, V/T2, W/T3 phase must pass through the same
zero-phase core in the same winding sense.
－－－－－－－
2
10
Interference Frequency (kHz)
DRIVE FWD REV REMOTE
DIGITAL OPERATOR JNEP-31
PRGM
DSPL
DRIVE
EDIT
JOG
ENTER
FWD
REV RESET
RUN STOP
25
3
10 10
4 5
10