All filters, fuel, lub oil, bypass, etc. along with
lub oil have to be changed after every 300 hours of operation or six
months, whichever is earlier. Besides this, the general daily,
weekly, and monthly checks are to be carried out as per the attached
sheet.

What are
the guidelines for understanding the
specific rating of the DG Sets?
Stanby Power Rating:
Applicable for
supplying emergency power for the duration of the utility power
outage. No overload capacity is available for this rating. Under no
condition is an engine allowed to operate in parallel with the
public utility at the Stanby Power Rating.
This rating should
be applied where reliable utility power is available. A Standby
rated engine should be sized for a maximum of an 80% average load
factor and 200 hours of operation per year. This includes less than
25 hours per year at the Standby Power Rating. Standby Ratings
should never be applied except in true emergency power outage.
Negotiated power outages contracted with a utility company are not
considered an emergency.
Prime Power
Rating:
Applicable for supplying electric power in lieu of
commercially purchased power. Prime Power Applications must be in
the form of one of the following two categories :
Unlimited
Time Running Prime Power:
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Prime power is available for an unlimited number
of hours per year in a variable load application. |
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Variable load should not exceed a 70% average of
the Prime Power rating during any operation period of 250 hours. |
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The total operating time at 100% Prime Power shall
not exceed 500 hours per year. |
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A 10% overload capability is available for a
period of 1 hour within a 12 hour period of operation. |
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Total operating time at the 10% overload power
shall not exceed 25 hours per year. |
Limited Time
Running Prime Power:
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Limited time Prime Power is available for a
limited number of hours in a non-variable load application. It is
intended for use in situation where power outages are contracted,
such as utility power curtailment. |
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Engines may be operated in parallel to the public
utility up to 750 hours per year at power levels never to exceed
the Prime Power Rating. |
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The customer should be aware, however, that the
life of any engine will be reduced by this constant high load
operation. Any operation exceeding 750 hours per year at the
Limited time Prime Power rating should use the Continuous Power
Rating. |
Continuous Power Rating:
Applicable for
supplying utility power at a constant 100% load for an unlimited
number of hours per year. No overload capability is available for
this rating.