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Chapter 4 Wizards Innovation Series Medium Voltage GP Type - G Drives G EH-6385
Motor Nameplate
and Equivalent
Circuit Data
Flux Curve
Data
Drive Commissioning: M otor Data Sheet -Equivalent Circuit D ata
The motor data sheet is available from the motor supplier. It is a useful source of
motor operating parameters that may not be listed on the motor nameplate. The
motor data sheet is also a good way to verify motor nameplate data.
The Motor Data Sheet shoul d contain hot resistance values for Stator(R1), Rotor
(R2), and the 'Hot' temp erature at which they were measur ed.
The Motor Data Sheet may cont ain cold resistance values for St ator (R1) and Rotor
(R2).
The Motor Data Sheet shoul d contain values for Stator( X1) and Rotor(X2) Leakage
Reactance and Magnetiz ing (Xm) and Starting Reactan ce (Xst).
Leave unkn own entries blank (n ot zero). Entri es can be returned to blank (<No
Value>) by highligh ting the enter ed value and pressin g delete.
Below is an example of a motor data sheet:
Motor Nameplate
and Equivalent
Circuit Data
Flux Curve
Data
On this motor data sheet, the synchronous speed of the motor is listed as RPM. The
rated full load speed of the motor is listed as FLS and is the speed that should be
entered for Motor rated rpm.
Motor winding cfg: On some motor data sheets, the winding will simply be listed as
wye or delta. In the example a bove, the line-neutral voltag e (E-LN) is the same as
the line-line volta ge (E-PH). Hence the motor has a delta win ding configuration. For
a wye winding configuration the lin e-line voltage will be less than the line-neutral
voltage by E-PH = E-LN ÷ √3.