GSW
9.2
Derating due to environmental conditions
Performance could be subject to “derating” with respect to the nominal values as a result of the environmental
conditions being different from the nominal conditions stipulated by the reference standard (ISO8528-1), such as
different temperature, altitude and humidity. This applies to both the engine and the alternator it is coupled to
and therefore, for the overall performance of the generator.
It is important for the user or customer to clearly inform the manufacturer concerning the environmental
conditions in which the generator will operate just as performance reduction and “derating” of the generator
must be established when placing the order. This will make it possible to appropriately adjust the engine and
alternator before being commissioned.
It is very important for the user or customer to specify the following data (ref. ISO8528-1) when indicating the
environmental conditions in which the generator will operate: ISO8528-1):
•
The minimum and maximum barometric pressure at the installation site or the altitude above sea level.
•
The minimum, maximum and average monthly temperature during the coldest and hottest months of the
year.
•
The lowest and highest ambient temperature around the generator engine.
•
The relative humidity, the water vapour pressure or wet and dry bulb temperatures, measured at the
maximum ambient temperature.
•
Any other environmental condition which could require special solutions or more frequent maintenance
cycles, such as:
•
Environments full of dust and/or sand
•
Marine environments
•
Environments with particularly high solar radiation
•
Environments with the possibility of chemical pollution
•
Environments with the presence of radiations
•
Operating conditions in the presence of strong vibrations (for example, zones affected by
earthquake or vibrations generated by nearby equipment).
Contact the generator manufacturer should you require further details concerning derating due to environmental
conditions.
110
9.SPECIFICATIONS
Summary of Contents for GSW
Page 2: ...GSW 57 ...
Page 57: ...GSW 112 10 ROUTINE AND EXTRAORDINARY MAINTENANCE LOG ...
