Input Reactor AC Line Choke for VFD
A choke is a coil of insulated wire, often wound on a magnetic
core, used as a passive inductor which blocks higher-frequency
alternating current (ac) in an electrical circuit while passing
signals of much lower frequency and direct current by having an
impedance largely determined by reactance, which is proportional to
frequency (see Inductor and Inductance). Chokes are typically used
as the inductive components in electronic filters.
The name comes from blocking—"choking"—high frequencies while
passing low frequencies. It is a functional name; the same inductor
is often called a "choke" if used to block higher frequencies, but
a "coil" or "inductor" if, say, part of a tuned circuit.
Input chokes install on the input side converter, inverter can
Improve the power factor and harmonic current inhibition.
AC output chokes install on the output side converter, the motor
can be reduced noise and vibration. When the inverter and
motor-line longer, can inhibit the surge wire.
Standard the product conforms to: IEC289:1987 Choke
GB10229 - 88 Choke, equivalent to IEC289:1987
JB9644-1999 Choke for semi-conductor transmission