dolycon CT100 Series - Functions of Peripheral Components

CT100 series inverters Installation and wiring
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3.4.2 Functions of peripheral components
Table 3-2 Functions of peripheral components
Name
Functions
Circuit breaker
Cut off the power and protect the latter when the latter devices
have failure.
Select the circuit breaker of the breaking current by 2 times of
the inverter.
Leakage
protector
PWM high frequency chopper voltage output causes high
frequency leakage current, so select a special leakage
protector.
Contactor
Frequent switching on-off the contactor causes inverter failure,
so do not start or stop the inverter by switching on-off the main
circuit, which will affect the life of the inverter.
Input reactor
and DC
reactor
Improve the power factor;
Reduce the impact on the system caused by the unbalance of
input power;
Suppress high harmonics and reduce external conduction;
Suppress the influence on the rectifier bridge caused by the
pulse current.
Input and
output filters
Reduce the interference of the inverter on peripheral devices.
Braking unit
and braking
resistor
Consume motor energy feedback and brake fast during
braking.
Output reactor
Reduce the protection of the inverter due to leakage current;
When the cable connecting the inverter and the motor is more
than 100m, it is recommended to install the output reactor.