CHV180 series frequency inverter special for elevator Wiring
.16.
capacity of breaker is 1.5~2 times to the rated current of inverter. Please refer to the
chapter of Specifications of Breaker, Cable, and Contactor for details.
●4.4.1.2 Contactor
In order to cut off the input power effectively when something is wrong in the system,
contactor should be installed at the input side to control the ON-OFF of the main circuit
power supply.
●4.4.1.3 AC reactor
In order to prevent the rectifier damage result from the large current, AC reactor should
be installed at the input side. It can also prevent rectifier from sudden variation of
power voltage or harmonic generated by phase-control load.
●Input EMC filter
The surrounding device may be disturbed by the cables when the inverter is working.
EMC filter can minimize the interference. Just like the following figure.
Figure 4.7 Wiring at input side.
4.4.2 Wiring for inverter
●4.4.2.1 DC reactor
CHV180 inverters (18.5kW~30kW) are equipped with internal DC reactors for the
improvement of power factors and the avoidance of damage from high input current to
the rectifying components because of the high-capacity transformer. The device can
also cease the damage to the rectifying components which are caused by supply net
voltage transients and harmonic waves of the loads.
●4.4.2.2 Braking unit and braking resistor
Inverters of 15kW and below have built-in braking unit. In order to dissipate the
regenerative energy generated by dynamic braking, the braking resistor should be
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