This is the first time I have dealt with a BITZER compressor and the concept of part winding start. I have searched for meaning of all the information on the nameplate of a compressor motor. I want to make sure my information are correct
Nominal voltage = 380-420.
Frequency = 50.
Maximal operating current = 37.
A(Y) = 97 is starting current using the connexion part winding start Y/YY.
A(YY) = 158 is starting current using the connexion direct on line start YY.
The thing that confuses me the most is :
In nameplate of the compressor, the part winding start connexion it is indicated by (Y) but in cover of the motor terminal board by (Y/YY), while the direct on line start connexion it is indicated by (YY) and the same in the motor terminal board.
According to what I understood, the indication to Part winding start is Y=Y/YY while YY refers to direct on line start.
Correct to me if I am wrong
Thanks in advance