Fischer Panda AGT 4000 PVMV-N, Руководство пользователя

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Generator Failure
Page 54 Panda AGT-DC 4000 PVMV-N s00670 - Chapter D: Generator Failure 29.12.04
D.3.3 Measuring the Coil Inductive Resistance
Unfortunately the checking of the ohmic resistance permits still no reliable statement about the
condition of the coil. If the ohmic resistance values arise inequalities between the coils, that is a
safe indication for the fact that the coil is defective. To be exactly sure the inductive resistance of
the coil have to be measured. For this a special measuring instrument is necessary, which mea-
sures the inductance of a coil.
Inductance is measured in the same way as the ohmic resistance, i.e. the coils are compared.
The value is indicated in mH (milli Henry).
Note: These values depends strongly from the measuring method (kind of the measuring
instrument).
An alternative test method to check the stator windings can be performed as follows:
1. Ensure that the connection to the circuit system is disconnected.
2. All electrical wires in the power terminal box must be disconnected.
3. Reconnect the battery connections.
4. Start the generator.
5. Measure the voltages between the following terminals and compare for symmetry:
U1-U2, V1-V2, W1-W2