11.5kV VFD.
11.5kV VFD.
(OP)
Dear All.
Im locking for VFD 11.5kV with "bypass". Sorry for term, I meant, after start of motor ( 6MVA) we would like close bypass on VFD and move feeding of motor to another CB.
( reason, used this VFD for another motors)
Firstly, I found, that only Robicon have real 11.5kV VFD, other company used step down-VFD-step up trafo, I would like avoid this configuration.
I know possible provide "bypass" on the VFD 690V, but...for this size of motor... it is joke.
Second, I think about autotransformer start.
What do you recommend in this situation.
Best Regards.
Slava
Im locking for VFD 11.5kV with "bypass". Sorry for term, I meant, after start of motor ( 6MVA) we would like close bypass on VFD and move feeding of motor to another CB.
( reason, used this VFD for another motors)
Firstly, I found, that only Robicon have real 11.5kV VFD, other company used step down-VFD-step up trafo, I would like avoid this configuration.
I know possible provide "bypass" on the VFD 690V, but...for this size of motor... it is joke.
Second, I think about autotransformer start.
What do you recommend in this situation.
Best Regards.
Slava





RE: 11.5kV VFD.
In VFDs then, 11.5kV is a good place to consider an LCI drive. They are typically significantly less than a PWM inverter at that voltage and they lend themselves well to bypass use. That is why one of the most common uses of LCI drives is as a giant soft starter, in applications just like you are describing.
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RE: 11.5kV VFD.
Many,many thanks for your good tips!!!!!
Best Regards.
Slava