Instruction Manual of
-S3 Inverter for Elevator
4.1.1.4 Noise Filter on the Input Side
An optional noise filter may be used specifically on the input side to restrain noise
transmitted between the power line and the Inverter.
4.1.1.5 Contactor on the Input Side
The Inverter is started and stopped through opening and closing of the contactor on the
input side to protect the power supply and prevent spreading of faults.
This contactor may not be used to control the start and stop of motors.
4.1.1.6 Contactor on the Output Side
A contactor is installed on the output side to meet the requirement in the national safety
standard GB7588-2003 that there shall be no current across the motor when it stops.
4.1.1.7 Noise Filter on the Output Side
An optional noise filter may be used on the output side to restrain the noise from the
output side and leakage current on the cable.
4.1.1.8 AC Reactor on the Output Side
An optional AC reactor may be used on the output side to restrain the radio interference.
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The AC reactor on the output side may also prevent over-current of the Inverter caused by
the line distribution capacity when the cable linking the Inverter and the motor is long (>20
m).
4.1.1.9 DC Reactor
Inverter wirin
A DC reactor may be used to improve the power factor.
4.2 Inverter Terminal Wiring
Figure 4.2 shows the interior of the Inverter.
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