CV7300 Instruction Manual - TECO-Westinghouse Motor Company

Chapter 3 Ambient Environment and Installation
Power supply:
Make sure the voltage applied is correct to avoid
damaging the inverter.
A molded-case circuit breaker must be installed
between the AC source and the inverter
Molded-case circuit breaker:
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.
Do not use the inverter as the switch for run/stop
switch.
Leakage breaker:
Install a leakage breaker to prevent error operation
caused by electric leakage and to protect operators
Setting current should be 200mA or above and the
operating time at 0.1 second or longer to prevent
malfunction.
Magnetic contactor:
Normal operations do not need a magnetic contactor.
But a contactor has to be installed in primiary side
when performing functions such as external control
and auto restart after power failure, or when using
brake controller.
Do not use the magnetic contactor as the run/stop
switch of the inverter.
AC reactor for power improvement:
When inverters below 200V/400V 15KW are
supplied with high capacity (above 600KVA) power
source or an AC reactor can be connected to
improve the power performance.
Input noise filter:
A filter must be installed when there are inductive
load around the inverter
Inverter:
Input power terminals L1, L2, and L3 can be used in
any sequence regardless of phases.
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.
To avoid damaging the inverter, do not connect the
input terminals T1, T2, and T3 to AC power.
Connect the ground terminal properly. 200 V series:
class 3 grounding,