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Improved
efficiency motors, Totally enclosed, Insulation class, F
Temperature rise class B Degree of protection IP55,
Continuous operation - s1
Ambient &
Attitude :
All standard motors are design to operate at ambient
temperature of - 15 C to 40 C and attitude not exceeding
3,000 m. above sea level
Voltage
Variation :
All standard motors are suitable for continuous operation
within +/-6% rated voltage, supplying rated output at normal
rate speed. They are also suitable for supply voltages
within 1% phase unbalance.
Time Rating :
Masimum continuous rating type s1 duty
Insulation
Class:
All standard motors are class F insulation with Class B
Temperature rise.
Cooling
Method :
Totally enclosed fan cooled.Improved high air-flow external
fan, assures low temperature rise, low noise and increase
motor life.
Fan & Fan
Cover :
The fans are of poly propylene. Cast iron fans and cover can
be provided on all frame sizes if required.
Rotor
Assembly :
The rotor core is made of low loss high grade
electromagnatic steel lamination. The rotor bars are
pressure die cast of high conductivity aluminium and cast
integrally with end rings and walter fan blades. All rotor
assemblies are dynamically balanced and surface is treated
with corrosion free coating.
Stator,
Winding and Insulation System :
Stator laminations are built of high grade, insulated cold
rolled electro - magnetic steel for high efficiency. All
standards motors are Class F insulation with class B
temperature rise. Heavy coated, heat and moisture resistance
polyester enameled copper wire are used for stator winding.
Construction
Mounting :
Basic Construction are for mounting in the B3 (horizontal
foot mounted), B5 (horizontal flange mounted) and V1
(Vertical mountings shaft down) position. installations can
also be in B6, B7 (wall mounting with vertical shaft) and
B3/B5 (foot and flange mounting).
Terminal Box
:
Cable entry to the terminal box can be adjusted to any one
of the four positions at 90 degree intervals. |
