Page 153 - booklet draft

ENERGY SAVING MEASURES

i) MODIFICATION TO IMPELLER OF TRACTION CONVERTER OIL PUMP
(SRMPH) TO REDUCE THE LOAD CURRENT/ POWER CONSUMPTION OF
THE MOTOR IN GTO LOCOMOTIVES

Shed has taken up an energy conservation initiative in 3-phase

GTO Electric locomotives by reducing the impeller diameter of
traction converter oil circulating pump (SRMPH) of M/s. FLOWWELL &

M/s. SHIL makes to reduce excess pressure in the oil cooling circuit and
thereby achieving energy conservation by reducing power
consumption of the pump.

The impeller diameter of SRMPH has been reduced in-house from

198 mm to 160 mm in M/s. FLOWWELL SRMPH and from 202 mm to 175
mm in M/s. SHIL makes SRMPH, thereby achieved reduction in the load

current/power consumption of the motor from 11 KW to 6.3 KW. This
reduction in the power consumption of the motor has been resulted in
energy conservation in three phase electric locomotives thereby

achieved 42.7% reduction in energy consumption. The reduction of
pressure also helped in minimizing the radiator failures besides

achieving energy conservation.

Impeller Oil Rating of the
Make
Diameter Pressure pump
Before 198mm 4.6kg/ cm 2 11 Kw/21Amps
FLOW
WELL After 160mm 2.6 6.3 Kw/12 Amps
Kg/cm 2

Before 202mm 3.6kg/ cm 2 11 Kw/21 Amps
After 175mm 2.6 6.3 Kw/12 Amps
SHIL Kg/cm 2