TRACTION MOTOR TYPE TM4907BZ INTRODUCTION:The traction motor type TM4907BZ is a four pole force ventilated machine with a lap wound fully equalized armature and is suitable for axle mounting roller suspension bearings. The nose is supported on a resilient suspension unit.SPECIAL FEATURES:

Machine conforms to IEC 349.Class 200 insulation on armature and field coils.Sealed armature bearings.Cast cum fabricated steel magnet frame,TIG welded armature.Mycalex moulded brush holder pins.PTFE protection on commutator front Vee ring.

CONSTRUCTIONAL DETAILS:4 pole machine.The Magnet frame is of cast cum fabricated design.High quality electrical varnished sheet steel is used for armature punchings.Res-I-glass bands on end winding.TIG welded armature coil joints to withstand high temperature.PTFE protection is provided on steel V-rings.Flame retardent (Fluonex) insulator cable for compole connection and main leads.Rubber top carbon brushes.Arcing ring is provided to avoid flashover damages.Armature & Field coil are having class 200 insulation system.Axle taper roller suspension bearings have been provided.The forced ventilation is from a ducting system on the locomotive connected to the motor through flexible bellows at the commutator end of the frame.

TECHNICAL DATA:

Continuous rating 325V, 1000A, 280 kW,430RPM

One hour rating 305A,1060 A, 278KW,395 RPM

max values 1100V,1466A,2275 RPM

Weight of motor with pinion, gear wheel & gearcase 3679 kg.

Insulation level 1500 v

No. of brush arms 4

Brush holders per arm. 1

Brushes per holder 3

TRACTION MOTOR TYPE: TM4601BXINTRODUCTION:Traction motor type TM-4601-BX is a 4-pole, self ventilated motor with lap wound armature and is suitable for axle mounting on sleeve bearings having vertical gear case arrangement. The nose is supposed on a resilient suspension unit. This motor is suitable for negotiating water logged tracks with water level 102 mm. above rail level for a fully worn out wheel diameter of 876.5mm. It complies with IEC-349-20deg.C temperature rise limit. SPECIAL FEATURES:

Kapton insulated armature coils.Sealed armature bearings.Class " F " epoxy bonded field coil system.Additional support for gear-case.TIG welded armature.PTFE protection on V ringDynamic seasoning of commutator.Vertical G.Case Arrangement.

TECHNICAL DETAILS:Continuous rating 325V, 300A, 88 KW, 730 RPMOne hour rating 320V, 325A, 92 KW, 678 RPMGear ratio 20/91Maximum current 650 AMaximum speed 2900 RPMInsulation- Armature Class HInsulation-Field coils Class FWeight together with gear & gearcase 2046 Kg.

TRACTION MOTOR TYPE TM4501AV

INTRODUCTION:The traction motor type TM4501AV is developed with roller suspension bearing. This motor is a four-pole force ventilated with a lap wound armature and is suitable for axle mounting on roller bearings. The nose is supported on a resilient suspension unit. SPECIAL FEATURES:

Machine conforms to IEC 349.TIG welded armatureSealed armature bearingsFRP molded brush holder pinsFabricated or cast steel magnet frame.Class H insulation on Armature and field coilsRoller suspension arrangement for increasing reliabilityPTFE brush protection on commutator front Vee ringKapton/Nomex based insulation systems for armaturesVPI of armature with Solventless polyester varnish.

TECHNICAL DETAILS:Cont. 385V, 620A, 211KW, 603RPMOne hour 371V, 640A, 208KW, 574RPMInsulation level 1000 voltsMax. operating Voltage 900 VoltsVentilation 2000CFMGear Ratio 18/93Motor weight with Gear and pinion 2050 kg

TRACTION MOTOR TYPE TM3801AZ FOR MG DIESEL ELECTRICMULTIPLE UNITINTRODUCTION:

Traction Motor type TM3801AZ is a dc series wound, four pole, self ventilated machine suitable for axle mounting on sleeve bearings. It is supported on the nose by a resilient suspension unit. CONSTRUCTIONAL DETAILS:MAGNET FRAME:The high permeability cast cum fabricated steel magnet frame is machined to ensure alignment of the end shields, pole bores and axle ways.The cast cum fabricated steel axle caps are machined with frame. The poles are built up from steel laminations riveted together. The main field coils are made of copper strap wound on flat, whereas the compole coil is edge wound. The coils are insulated with Class "H" insulating materials and vacuum pressure impregnated in high temperature moisture resistant class "H" Solventless Polyester varnish. ARMATURE:The armature core is built from electrical quality sheet steel laminations insulated from each other.The armature is wave wound and insulated with Class "H" insulating materials. The commutator is of Arch Bound construction. The copper segments are made from hard drawn silver bearing copper and risers integral with segments are slotted to received the armature coil leads.The copper segments which are insulated from each other with the micanite segments, are held together with the steel ’V’ rings, insulated with the alkyd vinyl V-rings. AXLE BEARINGS:Axle bearings are sleeve type bearing made in two halves from bronze castings and are lined with babbit metal at the load bearing surfaces. The bearings are oil lubricated by felt wick lubricator.Steel fabricated axle shield and dust guard are provided to protect the axle from dust.SALIENT FEATURES:

For positive locking, latch type commutator and inspection covers are provided at top of the frameThe nose of the motor is resiliently supported in the bogie.All covers are provided with neoprene rubber gaskets for better air sealing.The conductors are insulated from each other and from the core with Kapton based insulation.The wound armature is vacuum and pressure impregnated in high temperature moisture resistant Class "H" solventless polyester varnish and baked.

TECHNICAL DETAILS:

One hour Ratings 255 V,200 A, 612 RPM,44 KW

Cont.Ratings 300 V,170 A, 800 RPM,45 KW

Max. Speed 1933 RPM (at 75 KPH and 851 mm wheel dia.)

Total weight of motor 1334 Kgs (Approx.)

TRACTION MOTOR TYPE HS15250AINTRODUCTION:-

Traction motor type HS15250A is a six pole D.C. series motor specially developed in 1988 by M/s Hitachi Japan for Indian Railways for 4000 HP, 25 KV AC locomotive type WAG5.The magnet frame is of fully fabricated construction.Both main field and compole coils are edge wound and are vaccum pressure impregnated in class 200 epoxy resin.Armature is provided with cylindrical roller bearings on both ends. TECHNICAL DETAILS:-Continuous Rating 750V,900A, 895 RPM, 630 KWOne Hour Rating 750V, 960A, 877 RPM, 670 KWMax. Values Volts 900, Amps 1350, RPM 2150Weight of total unit 3800 Kgs.Weight of traction motor 3080 KgSALIENT FEATURES :-

Six pole, lap wound motor- Round magnet frameCurved field coils bonded with polesKapton covered conductor used in armature coils.Armature and field coils are vacuum pressure impregnated with class 200 solventless tri- functional epoxy resin.Arch bond commutator, TIG welding PTFE protection.Brush rocker to facilitate easy replacement of carbon brush and maintenance.Axle roller bearings inplace of sleeve bearings to reduce maintenance.Arcing studs on brush gear.High power to weight ratio.

3-phase traction motor type 6FRA6068 INTRODUCTION:The application of traction motor type 6FRA6068 is for goods locomotives WAG9 & passenger locomotive type WAP7. Based on technology of ABB received through CLW, BHEL has indigenized the above motor for 6000HP 25KV 3-phase drive AC locomotives.These motors will be used for driving the special class of

6000 HP AC locomotives with 3-phase drive system being manufactured in India for the first time to ABB, Switzerland technology. With technology advancements in the field of power electronics, GTO based converter- inverter drives have been developed for traction application which can feed variable voltage variable frequency supply to the induction motors and achieve precise speed and torque which is essential for traction application.In original ABB design motor there was some inherent design problems, which caused rotor overheating in Indian operating conditions. But BHEL has further modified the design of rotor from MIG welding type to brazed type. THE SPECIAL FEATURES:

The special features of these machines includeHigh temperature class solventless silicone resin impregnation system with an allowable temperature rise of 200 degrees Celsius.Frameless structure for weight optimization.MIG welded rotor cage for robust construction.Corona protected windings for high voltage application and plug in pinion for achieving higher tractive effort on wheels with higher gear ratios.The motors are also fitted with temperature sensors for performance monitoring and speed sensors for precise speed control during service.

  TECHNICAL DATA:

Continuous rating 2180 V, 270A, 850 kW, 65 HzMax. service speed 2584 rpmGear ratio 1:5.133Insulation class Class 200Power / weight ratio 0.404 kW / kgWeight 2100 Kgs.Motors per loco 6 for WAG9

HIGH TORQUE 3-PHASE TRACTION MOTOR IM 4801 AZ                                           INTRODUCTION:A decade back, Indian Railways had introduced 6000 HP electric locomotives with 3 phase drive technology. In these locomotives, the hauling is done with 3 phase induction motors instead of DC series motors. The motors

are operated with variable voltage variable frequency supply from the converter-invertor bank. These induction motors are of 850 kW with very compact design and insulation of high temperature class i.e. Class 200 resulting in a high power to weight ratio. These motors are in service for the last 10-12 years and in this period many cases have been seen of inadequate starting torque during the loco operating at high gradients.Based on requirement from RDSO/CLW to solve the problem of inadequate tractive effort situation being faced in present design locomotives due to which there is haulage failure at high gradients with loaded rakes, Traction machines Engineering Division, BHEL, Bhopal has developed a new design of high torque version of 3 phase induction motor for traction application for 6000 HP 3 phase drive electric loco, without any change in the continuous performance of the motor.  Special Features:

This motor is suitable for working with variable voltage variable frequency (VVVF) convertor supply upto 132 Hz.It is a class 200 insulated motor impregnated in solventless polyesterimide resin system.The rotor has a brazed squirrel cage for robust construction.The stator winding is with high quality Kapton insulated oxygen free copper conductor.Bearing assemblies are suitable for tough loading condition and lubricated with traction quality grease.The outgoing leads of star connected stator are terminated on a terminal box provided on top surface of the motor.

                                    

RATING: Continuous Maximum

Stator frequency 65 Hz 132 Hz

Motor voltage(phase to phase) 2180 V 2180 V

Stator current 275 A 451 A

Power factor 0.87 -

Torque 6330 N-m 10500 N-m

Power 850 Kw 850 Kw

Motor speed 1283 RPM 2584 RPM

HIGH TORQUE 3-PHASE TRACTION MOTOR IM 4801 AZ                                           INTRODUCTION:A decade back, Indian Railways had introduced 6000 HP electric locomotives with 3 phase drive technology. In these locomotives, the hauling is done with 3 phase induction motors instead of DC series motors. The motors are operated with variable voltage variable frequency supply from the converter-invertor bank. These induction motors are of 850 kW with very

compact design and insulation of high temperature class i.e. Class 200 resulting in a high power to weight ratio. These motors are in service for the last 10-12 years and in this period many cases have been seen of inadequate starting torque during the loco operating at high gradients.Based on requirement from RDSO/CLW to solve the problem of inadequate tractive effort situation being faced in present design locomotives due to which there is haulage failure at high gradients with loaded rakes, Traction machines Engineering Division, BHEL, Bhopal has developed a new design of high torque version of 3 phase induction motor for traction application for 6000 HP 3 phase drive electric loco, without any change in the continuous performance of the motor.  Special Features:

This motor is suitable for working with variable voltage variable frequency (VVVF) convertor supply upto 132 Hz.It is a class 200 insulated motor impregnated in solventless polyesterimide resin system.The rotor has a brazed squirrel cage for robust construction.The stator winding is with high quality Kapton insulated oxygen free copper conductor.Bearing assemblies are suitable for tough loading condition and lubricated with traction quality grease.The outgoing leads of star connected stator are terminated on a terminal box provided on top surface of the motor.

                                    

RATING: Continuous Maximum

Stator frequency 65 Hz 132 Hz

Motor voltage(phase to phase) 2180 V 2180 V

Stator current 275 A 451 A

Power factor 0.87 -

Torque 6330 N-m 10500 N-m

Power 850 Kw 850 Kw

Motor speed 1283 RPM 2584 RPM

3-PHASE TRACTION MOTOR TYPE IM4507AZGENERAL :- The motor type IM4507AZ is a 4 pole, 3 phase, star connected, forced ventilation squirrel cage induction motor mounted on axle with roller bearing arrangement and suspended on nose. These motors shall be used on 4000 HP AC locos type WAG4 for freight application in Indian Railways. These locos are based on 3 phase drive technology. Six motors are required per loco.BHEL shall be designing the AC traction motor type IM4507AZ to suit the drive requirement of WDG4 loco.

CONSTRUCTION & MAIN FEATURES :-Gear ratio : 1:5.294 (17/90)Insulation class : Class 200Nom. Insulation voltage : 2300 VPower to weight ratio : 0.193 kW / KgVentilation : Force VentilatedThis motor is suitable for working with variable voltage variable frequency (VVVF) converter supply.It is a class 200 insulated motor. The stator windings is vacuum pressure impregnated in solventless silicone varnish. The stator has a frameless structure for weight reduction.The rotor shall be induction brazed squirrel cage for robust construction. The pinion is plug in type with extended shrunk fitting in the shaft taper bore. The outgoing leads of 3 phase of stator are terminated on a terminal box provided on top surface of the motor. No outgoing star point is available.The driving end bearing is cylindrical roller bearing oil lubricated / electrically insulated and non drive end bearing is deep groove ball bearing grease lubricated and electrically insulated.For monitoring the temperature rise of running machine, two RTD PT 100 type temperature sensors with MS connectors are provided on the stator core fitted deep upto the tooth level. A speed sensor is also provided on the NDE side bearing housing for giving speed signals to loco control system.Total weight without pinion : 2120 Kgs (approx.)

TECHNICAL DATA :- RATING Continuous MaximumMotor voltage (phase to phase) 1520 V 1520 VStator current 202 A 330 APower factor 0.88 -Stator frequency 20.6 Hz -Torque 6767 Nm(Starting) 9471Nm(Starting)Power 425 kW 630 kWMotor speed 600 RPM 3320 RPM

13-PHASE TRACTION MOTOR TYPE DMKT 53/42 GENERAL:-The motor type DMKT 53/42 is a 6 pole, 3 phase, star connected, self ventilated squirrel cage induction motor mounted on axle with roller bearing arrangement and suspended on nose. These motors have been used on the dual voltage EMUs. Four motors are required per EMU rake. This motor is designed and developed jointly with M/s TRAXIS of Holland.

TECHNICAL DATA:-Rating Continuous MaximumMotor voltage (phase to phase) 1716 V 1950 VStator current 136A 195 APower factor 0.8 -Torque 2255 Nm 3500NmPower 297 Kw 297 KwMotor speed 1259 rpm 2750 rpmSPECIAL FEATURES:-

The weight of DMKT 53/42 is approximately 25% less and power is more by 59% compared to the DC motor in use as a result the power to weight ratio has doubted.DMKT 53/42 traction motor is designed with class 200 insulation system and is VPI treated with solventless silicone resin. The stator punchings are made from low loss high permeability sheet steel which are stacked and shrink fitted in the stator housing. The stator coils are made from polyamide covered conductors which are housed in the stator slots using polyamide slot liners.The rotor punchings also use the low loss high permeability sheet steel. The rotor punchings are stacked on the shaft directly. The short ckt. Rings are induction brazed to the rotor bars. Fans are fitted on DE and NDE ends for provision of self ventilation.The traction motor has been provided with a terminal box and is axle hung nose suspended in the bogie. The transmission is through single reduction gear and it is housed in a gear case.

TG 4302AZ TRACTION GENERATOR FOR BGDE SHUNTING LOCO

INTRODUCTION:

The TG4302AZ Traction Generator IS A 6 pole, high speed, specially excited DC machine with commutating poles. A series winding incorporated in the main poles, enables diesel engine stating when connected across locomotive battery. The main field is dived into two sections called separately excited field and battery field. The battery field is excited from the battery, and provided initial flux, which will enable proper self-excitation to the initial operating range of generator characteristics.

The generator is directly coupled and mounted onto the diesel engine. While coupling the TG4302AZ Traction Generator to diesel engine, special frame mounting bolts (16 Nos. of M12 x 122) & special fan coupling screw (10 Nos. of 5/8” 18 UNF) are to be used. These special hardware is supplied along with each traction generator.

 CONSTRUCTIONAL FEATURES:  

Kapton insulated armature coils are housed in the slots and held in position by fiber glass slot wedges driven into the slots.

End windings are held in position by resiglass bands.

Equaliser coils are placed on the commutator hub at appropriate time of winding.

            Fully insulated armature is subjected to vacuum pressure impregnation in a solventless polyestermide resin

 

TECHNICAL   DATA:

One Hour / Cont. RATING:300 V,700 A,2100 RPM,210 KW

210 KW TRACTION GENERATOR TYPE TG4302BY FOR 350HP MG DEMU

INTRODUCTION:

The traction generator type TG4302BY is coupled with diesel engine of CIL make and is installed in driving power coach (DPC) of meter gauge diesel electric multiple unit (MG DEMU).

The TG4302BY traction generator is a 6 pole, high speed, separately excited DC machine with commutating poles. A series winding incorporated in the main poles, enables diesel engine starting when connected across locomotive battery. The main field is dividend into two sectioned called separately excited field and battery field. The battery field is excited from the battery, and provided initial flux which will enable proper self excitation to the initial operating range of generator characteristics.

CONSTRUCTIONAL FEATURES:

ARMATURE

High quality armature laminations are pressed onto the alloy steel shaft, and held in between the armature end plate and the commutator hub. Kapton insulated armature coils are housed in the slots and held in position by fibre glass slot wedges.

The armature and equalizer coil are TIG welded to the commutator risers. The fully insulated armature is subjected to vacuum pressure impregnation in a solventless polyesterimide resin and armature is then sprayed/ brush coated with solventless silicone based finishing paint.

After final impregnation, the commutator subjected to dynamic seasoning and fine finishing the micas are undercut and the commutator bar edges are beveled for smoother brush riding.

The commutator end of the armature is supported by a double row spherical roller bearing. The bearing can take a certain amount of misalignment and end thrust.

 MAGNET FRAME AND FIELD COILS.

The magnet frame is fabricated from rolled steel plates and accurately machined to hold the field system in position.The main pole bodies alongwith main field coils are fastened with high tensile steel bolts, whereas the compole bodies with coils are fastened to magnet frame with stainless steel (non-magnetic bolts).

BRUSH GEAR

The brush gear arrangement is made with fixed arms, whose position is fixed at the time of manufacture. The brush holders are 100 trailing type suitable for DC generator for better commutating ability, adjustable over serrated spacers to maintain the specified gap between commutator and brush holder.

TECHNICAL DATA:

One Hour / Continuous : 300Volt, 700Amp, 2100RPM, 210 kW

Insulation class : H.