TECO 7300EV, Быстрый старт, Страница: 20 / 93

Chapter 3 Environment description and installation
3-10
3.3.3Precautions for peripheral applications:
Power supply:
z
Make sure the voltage applied is correct to avoid damaging the
inverter.
z
A molded-case circuit breaker must be installed between the
AC source and the inverter.
Molded-case circuit breaker:
z
Use a molded-case circuit breaker that conforms to the rated
voltage and current of the inverter to control the power ON/OFF
and protect the inverter.
z
Do not use the inverter as the switch for run/stop switching.
Fuse:
z
A
suitable fuse should be installed with inverter rated voltage and
current to protect inverter when a MCCB has not been used.
Earth Leakage circuit breaker:
z
Install a leakage breaker to prevent error operation caused by
electric leakage and to protect operators,please choose the current
range 200mA upper,and action time 0.1 second upper to prevent
high frequency fail.
Magnetic contactor:
z
Normal operations do not need a magnetic contactor. But a
contactor has to be installed when performing functions such as
external control and auto restart after power failure, or when
using brake controller.
z
Do not use the magnetic contactor as the run/stop switch for the
inverter.
AC Reactor for power improvement:
z
When inverters are supplied with high capacity (above
600KVA) power source, a AC reactor can be connected to
improve the PF.
Input noise filter:
z
A filter must be installed when there are inductive load around
the inverter.
Inverter:
z
Output terminals T1, T2, and T3 are connected to U, V, and W
terminals of the motor. If the motor is reversed while the inverter
is forward, just swap any two terminals of T1, T2, and T3.
z
To avoid damaging the inverter, do not connect the input
terminals T1, T2, and T3 to AC power.
z
Connect the ground terminal properly.( 200 V series: Rg
<100
:
; 400 V series: Rg <10
:
.)