- General Electric Computer Accessories User Manual

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• Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Leakage Inductance Curve
The Leakage Inductance Curve describes the relationship between motor leakage
flux and torque current. The motor data sheet does not provide Leakage Inductance
Curve information. The characteristics of the curve can be obtained experimentally
or by running the Motor Control Tuneup.
Line Transfer
The Line Transfer function transfers a motor from the drive to the utility line and
captures a motor from the utility line to return control to the drive. In addition to the
parameters and variables documented here the Line Transfer Tuneup wizard is
provided to simplify and automate many of the tasks required to correctly
commission this function. To use this function you must have the necessary
contactors and operator interfaces as described in the "Innovation Series Line
Transfer Application Guide". The following figure summarizes the power one-line of
a basic line transfer application.
Motor
Line
Reactor
Figure 1
Innovation Drive
& Transformer
Utility
Contactor
Drive Output
"MA" Contactor
Customer's
Utiltiy Feed
General operation
The following table specifies the general configuration parameters for this function.
Parameter Description
Line reference
Selects the source of the utility line reference. The use of the
internal line reference (ILR) is encouraged unless conditions exist
such that it is not possible to accurately predict the utility phase and
magnitude at the motor from the source voltage applied to the drive.
See the "Innovation Series Line Transfer Application Guide" for a
complete discussion of issues related to line reference selection.
The following table specifies the general status variables for this function.
Variable Description
Line xfer enabled Indicates that the line transfer function is enabled.
Transfer MA
request
Indicates that the transfer/capture sequence has requested the
MA contactor to close.