Noise Filter; Braking Unit And Braking Resistor; Alternating Current Reactor - Veichi Electric AC60 series Manual

10.1 AC reactor
AC reactor can suppress higher harmonic of the frequency inverter input
current and improve the power factor of frequency inverter obviously. It is
suggested that AC reactor should be used under following situations.
10.1.1 Where the AC reactor is used in the frequency inverter, the ratio of
power source capacity and frequency inverter capacity is above 10:1.
10.1.2 There are thyristor load or power compensating factor device with
ON/OFF controller on the same power supply
10.1.3 The three-phase power supply voltage unbalance is big（≥3%）.

10.2 Noise filter

This filter is used to suppress the conduction of electromagnetic
disturbance noise that produced by the frequency inverter and restrain the
external radio interference as well as instantaneous impact and surging to
this machine. Filters should be as close as possible to frequency inverter.
If there is equipment with insufficient anti-interference ability under
occasion with high demand on preventing radio interference and occasion in
according with CE 、 UL 、 CSA standard usage, this filter should be used
without exception.

10.3 Braking unit and braking resistor

AC60 series machines below 15 G/18P have the inner braking unit. Their
maximum braking torque is 50%. Users buy the matching braking resistor
separately according to the following table.
Frequency
inverter Frequency inverter
specificati power（KW）
on
220V 0.75
Braking resistor
value（Ω）
200
170
Braking resistor
power（W）
120