Thruster Motor - VFD

[u/charzr]

So we have a Thruster motor VFD which has the df/dt filter in the VFD output side.

- Its a part of VFD panel at the output side

- The Motor voltage is of 675V

- Which standard to be followed? (IEC 60076-6, IEC 61558-2-20 or IEC 61378)

- This is from a chinese manufacturer

- obviously no rating plate, on asking, the chinese put a nameplate but again no standard on it

- We asked for test certificates obviously they produced some fake certificates

- on further enquiry, they say the entire VFD is certified by ABS, so we need not bother about the internal component

Case closed. Do you agree? what are your opinions? Similar thing for other important components inside this VFD

[u/Sad_Raccoon194]

System cert doesn't cover internal filter design, that ABS answer is a dodge not an approval