Fischer Panda 10000x, Руководство пользователя

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Generator Failure
10.6.16 Kapitel/Chapter 8: Generator Failure - Seite/Page 117
8.3 Tools and measuring instruments
In order to be able to manage disturbances while driving, following tools and measuring instruments should
belong to the equipment on board:
• Multimeter for voltage (AC), frequency and resistance
• Measuring instrument for inductance
• Measuring instrument for capacity
• Current absorbing clamps
• Thermometer (ideal is a infrared thermometer)
• Pressure device (pincer) for coolant circuit
8.4 Overloading the Generator
Please ensure that the genset is not overloaded. This is especially the case with multi-power aggregates.
Overloading occurs when the electrical load (demand) induces a load torque in the generator which is higher than
what the diesel drive motor can provide. Overloading causes the engine to run rough, burn oil, create excessive
exhaust (environmentally unfriendly) and even to stall.
The generator should only be loaded at the peak rated power for short periods only! A high peak current is required
to start many electrical devices, especially electric motors and compressors (from a still stand state).
In order to prolong the gensets life expectancy, the nominal electrical demand on the system should not be more
than 70 % of the rated genset power.
Bear this in mind when switching on electrical devices. This ensures a longer life expectancy.
Continuous performance is the uninterrupted running of the generator for many hours. The genset can be run for
several hours at partial load (i.e. 2/3 of rated power), however it is not advised that it is run for more than 2-3 hours
at full load.
The Panda is designed so as not to overheat even under extreme conditions. Note: The exhaust gas will become
sooty during peak-load operation.
8.4.1 Effects of Short Circuiting and Overloading on the Generator
The generator cannot be damaged by short circuiting or overloading. Short circuiting and overloading suppress the
magnetic excitation of the generator, thus, no current is generated and the voltage will collapse. This condition is
immediately offset once the short-circuit has been eliminated and/or the electrical overload removed.
8.4.2 Overloading the Generator with Electric Motors
Please note that electric motors require six to ten times more power than their rated capacity to start.
If the supplied generator power is lower than what the electric motor requires, the generator voltage will collapse. For
applications where a high current draw is required to start an electrical device (such as an electric motor), the motor
manufacturer should be consulted for possible solutions (for example: stronger capacitors, gradual power-up
switches, or a specially designed starting unit for electric motors).
System efficiency can be improved by up to 50 % and motor current draw (to start) reduced by as much as 100 % if
it is properly designed. If the inductive load (i.e. E-Motor) is more than 20 % of the generator nominal power, a
compensation is necessary. See also the information brochure „Special information for operation of Panda
generators with inductive load“.