Fischer Panda 6500 PMS, Руководство пользователя

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Generator Faults
Seite/Page 164 Panda PMS 8.000 NE - 42 NE Manual.R05 - Kapitel/Chapter 7: Generator Faults 22.3.11
7.8.6 Measuring the Inductive Resistance
An Ohm measurement of a winding does not always give reliable information concerning the state of the winding. If
there are resistance irregularities between the windings parts, this is a sure sign that the winding is defective. This
means the opposite cannot be concluded. This means a winding can also be defective, if the resistance values bet-
ween the windings parts do not show great deviation.
Measurement of the inductive resistance gives a better reading. A Special measuring device is necessary for this.
The inductivity is measured in the same manner as the resistance, i.e. the windings parts are compared. The value
of the inductive resistance is given in mH (milli Henry).
The correct values for the inductive resistance can be obtained from Table 8.8 on Page 176.
Note: The values are greatly dependent upon the measuring method (type of ohmmeter).
7.9 Generator provides no voltage
7.9.1 Rotor Magnetism Loss and "Re-magnetising"
ATTENTION!
“Safety Instructions” on Page IV
In the case of asynchronous generators, the generator cannot independently increase voltage after standing still, or,
if it is switched off under full load. This is because the rotor has lost its remaining magnetism.
This remaining magnetism can be restored simply by use of a DC battery. In addition the "shore power"must be swit-
ched off and any connection to an AC-source must be interrupted.
Likewise the generator must be switched off, i.e. also the starter may not be operated. The power source selector is
switched to "generator". Only the plug socket must be connected with the generator.
Now the two poles of a 9 Volt battery are connected to the plug socket or held against the appropriate contacts of the
on-board current distributor. Do not use a battery bank or the generator starter battery, this could damage the win-
ding. The DC voltage only may be applied for a short time (1-2 seconds). In the winding the remaining magnetism is
restored by a short current pulse, and the generator can normally be started.