One of the most important decisions that needs
to be made in a factory or unit is the determination of the diesel
generator size. Will it be used
for continuous power supply or will it serve as a standby source? While you
will be consulting an expert, who will recommend a size, this article aims to
give you a basic understanding about the factors you need to consider for generator
sizing.
1)
Generator Ratings
Diesel generator ratings are either continuous,
prime or standby.
Ø
Prime rating allows some
fluctuation in the load, and
Ø
Standby means the backup
running time is up to 200 hours per year.
2)
Performance Classes
a)
Class G1 is for general purpose
loads, example lighting.
b)
Class G2 is meant for public
electricity supply, pumps and fans.
c)
Class G3 is used for
telecommunications and thyristor-controlled loads.
d)
Class G4 is used in data
processing or computer systems where the demands are stringent.
3)
Start-up times
A. Manual starting for generators without a specified start-up time.
C. Automatic start-up –
Short Break: - When power is disrupted for only a few
milliseconds while the electrical transfer takes place.
D. Automatic start-up – No
Break: - A continuously running electrical machine
providing an uninterrupted supply in the event of power failure.
4)
How much power do you
need?
It is a myth that smaller dg
sets can be used for standby requirements since they
will not be used all the time. This thinking can lead to generator damage and
other assets connected to it and create unsafe situations.
5)
Assess your needs
While it may be tempting to visit your nearest dealer
and pick up the cheapest generator available, it won’t make good business sense. You should study
and understand your power requirements before you go shopping for a
generator.
6)
Make a list
ü
The next step is to list
the starting and running wattage of items.
ü
Finally, you should calculate
the total power requirements.
To know more
about Mahindra Powerol, visit www.mahindrapowerol.com or
call
1-800-419-1999
