Mitsubishi Electric FATEC FR-A800 Manual page 113

7
REVIEW OF INSTALLATION ENVIRONMENT
●FR-BSF01
Number of
Cable
pass-through
2
used (mm )
times (T)
2 4
3.5 4
5.5 3
8 2
14 2
22 1
×
38
Cannot be
to
used.
150
3) Using FR-BIF (-H) and FR-BLF or FR-BSF01 together
As described above, FR-BIF is effective for the noise with a relatively low frequency, and
FR-BLF is effective for the noise with a high frequency. Therefore, the effect can be
enhanced by using both filters together.
The FR-A800 and F700P series 55 kW or lower inverters have the filters equivalent to the
line noise filter and radio noise filter on the input side.
The 75 kW or higher inverters have the filters equivalent to the radio noise filter only.
4) Noise suppression transformer
Noise suppression transformers are transformers having extremely small magnetic and
electrostatic coupling of the primary and secondary coils and effective in noise reduction.
7.2 Noise
108
Table 7.2 Cable used and number of pass-through times
When the cable is thick
2
(5.5 mm or more)
The cable cannot be wound
four turns to one filter. It is
recommended to use two or
more filters to wind the cable
four turns in total.
Use the above mentioned type
or FR-BLF type line noise
filter.
Line noise filter
FR-BLF
FR-BSF01
MCCB
Power
supply
Connect the connection
cable directly at the shortest
distance to the input
terminal of the inverter.
Fig. 7.22 Using FR-BIF and FR-BLF or FR-BSF01 together
●FR-BLF
Number of
Cable
pass-through
used (mm 2 )
times (T)
2
to
4
22
30
to 3
60
80 2
100
1
to
150
Shortest
Inverter
R
S
T
FR-BIF
Earth (ground)
When the cable is thick
(30 mm 2 or more)
The cable cannot be wound
four turns to one filter. It is
recommended to use two or
more filters to wind the cable
four turns in total.