1.78 ELECTRIC MOTOR AND FLAME PROOF MOTOR

STANDARD INDUCTION MOTOR

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RANGE

The motors are available from 63 to 355 frame size and in 2 pole to 16 pole design.

MOUNTING

Foot – Horizontal B3,Vertical V5/V6, Flange – Horizontal B5 , Vertical V1/V3,
Face – Horizontal B14 , Vertical V18/V19, Foot cum Flange B35 , Foot cum face B34,

GENERAL ENCLOSURE

The Stator Housing & End shields are of C.I. Grade FG 200 of IS:210 1978 & machined to close tolerance. Motors of 63 to 90 frame can be Offered in Aluminium die cast body. Foot mounted motors are with integral feet.

CORE

The stator & rotor cores are made of low loss , high quality magnetic steel.

FINISH

All Castings are coated with red Oxide primer and final coating is of “Coffee Brown” shade.Motors with different shade / colour can be given.

STADARDS

The motors confirm to following National & International Standards.

DESCRIPTIONISIEC
PERFORMANCE32534-1
DIMENSIONS1231222372-172-1
PROTECTION469134-5
INSULATION12718-5
TERMINAL MARKING472834-8
MOUNTING225334-7

standard induction  motor

 

WINDING

Stator windings consist of modified polyester enamelled copper wire confirming to type II of IS : 4800 part V.

ROTOR

The complete range of motors is provided with high pressure aluminium die-cast rotors. ( copper rotor available on request)

SHAFT

The shaft is made of Steel-Grade 40 C8 of IS :1570 (part2) , 1979, shaft of special steel i.e. EN , EN 31 , SS 431 etc. can be made available.

EFFIENCY

Motors are offered with effiency confirming to EFF 2 of IS: 12615 Motors confirming to Eff 1 can be offered. The variation in effiency between 60% to 100% load is nominal which ensures low losses at partial loads.

TERMINAL BOX

The terminal box is Aluminum casting & can be rotated in steps of 90º.

VOLTAGE FREQUENCY

The Motors are suitable for 415 + 10% V , 50 + 5% Hz , However motors suitable for opration at 110 to 650 V & 25 TO 75 Hz can be given.

AMBIENT TEMPERATURE

Motors are suitable for 45ºC ambient temperature .However motors suitable for different ambient conditions can be offered.

NOISE LEVEL

Noise level of motor is maintained as per IS:12065 specifications.

DEGREE OF PROTECTION

Motors are available in IP 55 protection as per IS:4691.

INSULATION

Motors are with class “F” Insulation with temperature rise of class “B” limits. Motors in class A,B,H can be offered. The slot linings are either provided with double cuffing or edge binding at the slot month. To strengthen insulation Surge test is carried out on all windings to ensure their healthiness.

COOLING

The external cooling is brought about by plastic or metallic bidirectional centrifugal fan ad cooling confirms to IC-411 as per IS:6362. The fan cover is of corrosion protected sheet metal.

VIBRATION

The rotors & fan are balanced separately on precision balancing machine to normal class as per IS:12075 , which results in low vibration levels.

OPTIONS AT SHORT NOTICE

• Torque motors ,Brake motors.

• Cooling tower Motors,

• Double shaft , Special shaft.

• Multi speed.

• Special Voltage / Frequency

• Dual voltage / Dual Frequency

• Crane duty / Lift duty suitable for S1 to S9 , duty different C.D.F. and various no of starts / stops / reversals.

• Suitable for different service factors.

• Suitable for VVVF operation

• NEMA and IEC frames.

SHIPPING DIMENSIONS
FRAMEL (CM)W (CM)H (CM)
63332522
71332522
80362723
90S383125
90L413125
100L433433
112M523835
132S574338
132M624338
160M674946
160L724946
180 M/L795649
200L905865
225 S/M966170
250 M1126776
280 S/M1257582

 


three phase induction motor
THREE PHASE INDUCTION MOTORS

 

single phase induction motor

SINGLE PHASE INDUCTION MOTORS

FLAME PROOF MOTOR

 

Flame proof ( explosion proof or increased safety)motors suitable for zone 1 and zone 2 areas for gas group I , IIA , IIB and IIC are approved by CMRI , CCOE , BIS and DGMS ( IIC on request only)

 

RANGE

The Motors are available from 63 to 315 frame size and in 2 pole to 16 pole design.

MOUNTING

Foot – Horizontal B3,Vertical V5/V6,
Flange – Horizontal B5 , Vertical V1/V3,
Face – Horizontal B14 , Vertical V18/V19,
Foot cum Flange B35 , Foot cum face B34,

GENERAL ENCLOSURE

The Stator Housing & End shields are of C.I. Grade FG 200 of IS:210 1978 & machined to close tolerance. All Foot mounted motors are with Integral feet. Flame proof motors have compact & rugged construction which Prevents any interval explosion from spreading outside. Fasteners used are of high tensile material with a Minimum tensile strength not more than 240 N/ mm2

CORE

The stator & rotor cores are made of low loss , high quality magnetic steel.

FINISH

All Castings are coated with red Oxide primer on internal & external surfaces . Final coating is of ‘Epoxy Turquoise Blue’ Shade . Motors with different shade / colour can be given.

STANDARDS

The Motors confirm to following national & international standards.

DESCRIPTIONISIEC
 
 
PERFORMANCE
328334-1
(Underground mines)
32534-1
(Other Industrial applications)
DIMENSIONS1231
2223
72-1
72-1
PROTECTION469134-5
INSULATION12718-5
TERMINAL MARKING472834-8
MOUNTING225334-7
ENCLOSURE214879-1

 

WINDING

Stator windings consist of modified polyester enamelled copper wire confirming to type II of IS : 4800 part V.Windings are specially treated to protect against chemically aggressive gases, vapours & conductive dust.

 

ROTOR

The complete range of motors is provided with high pressure aluminium die cast rotors.

SHAFT

The shaft is made of Steel-Grade 40 C8 of IS :1570 (part2) , 1979, shaft of special steel i.e. EN 24 EN 31 , SS 431 etc. can be made available.

EFFICIENCY

Motors are offered with effiency confirming to EFF 2 of IS: 12615 Motors confirming to Eff 1 can be offered. The variation in effiency between 60% to 100% load is nominal which ensures low losses at partial loads.

TERMINAL BOX

Flame proof motors have terminal box on top as standard which can be rotated in steps of 90º Terminal box Comes with spigotted cover and bottom plate and is spaciously designed for accomodating bigger cables. Terminal blocks are made of completely non-hygroscopic , thermo setting moulded glass-filled compound enveloped on brass studs.Motors upto & including 2.2 kw are with 3 leads 3.7 kw & above are with 6 leads.

VOLTAGE FREQUENCY

The Motors are suitable for 415 + 10% V , 50 + 5% Hz , However motors suitable for opration at 110 to 650 V & 25 TO 75 Hz can be given.

AMBIENT TEMPERATURE

Motors are suitable for 45ºC ambient temperature at an altitude not exceeding 1000m above mean sea level. Flame proof motors are suitable for temperature class T1 to T4 as per IS:6381. Motors upto temperature class T6 can be made available.

PRESSURE TESTING

All parts of the Flame proof enclosure are hydraulically tested for pressure of 15 kg/cm2 as per IS: 2148:2004 & IEC 60079-1 (2001) to ensure that there is no leakage through blow holes of pinholes.

NOISE LEVEL

Noise level of motor is maintained as per IS:12065 specifications.

DEGREE OF PROTECTION

Motors are provided with IP 55 protection as per IS:4691 . All B5 Motors have oil seal at driving end.

INSULATION

Motors are with class “F” Insulation with temperature rise of class “B” limits. Motors in class H can be offered. The slot linings are either provided with double cuffing or edge binding at the slot month. To strengthen insulation Surge test is carried out on all windings to ensure their healthiness.

COOLING

The external cooling is brought about by cast iron bidirectional centrifugal fan and cooling confirms to IC-411 as per IS:6362. The fan cover is of corrosion protected sheet metal.

VIBRATION

The rotors & fan are balanced separately on precision balancing machine to normal class as per IS:12075 , which results in low vibration levels.

CABLE ENTRY

Flame proof motors for underground mines for paper insulated lead covered double wired armoured (PILCDWA) PVC cables come with cable entry with compound filling sealing boxes. Flame proof cable glands in cable entries can also be provided for PVC armoured cables.

OPTIONS AT SHORT NOTICE

• Brake motors , Cooling Tower motors.
• Double shaft , Special shaft.
• Multi speed.
• Dual voltage / Dual Frequency
• Crane duty / Lift duty suitable for S1 to S9 , duty different C.D.F. and various no of starts / stops / reversals.
• Suitable for different service factors.
• Suitable for VVVF operation
• NEMA and IEC frames.
• II C Flame proof motors of full range (63-280 Frames).