V 810 Chapter 7 Peripheral devices selection
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Chapter 7: Peripheral devices selection
Check the performance of the purchased inverter. Appropriate peripherals must be
selected according to performance. Look at the following list and select the appropriate
peripherals:
7.1 Peripheral devices description
Circuit breaker and
leakage breaker
The circuit breaker must be carefully selected according to
the power and tripping time
Electromagnetic
contactor (MC)
Install the contactor to ensure operator safety. Do not use
the contactor to start and stop the inverter. Otherwise, its
service life will be shortened.
AC/DC choke coil
(reactor)
The reactor (optional) is used to measure harmonic power,
improve the power factor or if the inverter is installed near a
large power supply system (1000 kVA or more). If you do not
use the reactors, the inverter may be damaged. Select the
reactor according to the model. At 160 KW or less, remove
the jumpers via the P / + - <-> terminals to connect to the DC
reactor.
At 250 KW or more, a unidirectional reactor is supplied.
Always install it.
Install an interference filter to reduce the electromagnetic
noise generated from the drive. It is effective in the range of
about 1 MHz to 10 MHz. A better result can be achieved by
crossing several conductors.
Brake resistor and brake
unit
Improves braking ability when decelerating.
Reduces drive-generated interference.
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