97
7.
Motors which have a reputation for giving efficient and trouble free
service should be preferred.
8.
An electric motor should always be provided with a starter and a
capacitor matching the motor. In general, for motors below 3 HP a 1
KVAR capacitor should be used and for motors between 3 to 5 HP, a 2
KVAR rating capacitor should be used.
9.
Although the HP of the motor should be calculated according to the
requirements of discharge and head at site, the following table gives the
recommended HP of the motor for different head and discharge ranges.
It is now mandatory that it should conform the specification laid under IS10804
: 1986.
Table 6.11 : Matrix for HP of Motor for Various Head and Discharge Ranges
(Source : NABARD, 1989)
Selection of Diesel Engine [NABARD, 1989]
The performance of a diesel engine is judged by its fuel consumption for a
specified unit of work and the period of its trouble free service. The fuel
consumption of a diesel engine is expressed in terms of Special Fuel
Consumption (SFC). The SFC is specified in terms of rate of diesel oil
consumed in grams per hose power (HP) per hour running of the engine. It is
also expressed in terms of rate of diesel oil consumed in gram per Kwh running
of the engine. For converting weight into volume the specific gravity of diesel
