HT Motor Overhauling & Rewinding Procedure.

HT Motor Overhauling & Rewinding Procedure.

Overhauling of 3Ph,50Hz, 415V squirrel cage Induction Motor for Pump with replacement of DE & NDE Bearing , including following work.

1)De-Coupling of Motor.

 2)Testing of Motor before & after overhauling 

 a)IR & PT Test 

 b)Winding resistance

3)Dismantling all removable cable of motors.

 4)Dismantling the Motor from the Starter. 

5)Through cleaning of starter and rotor.

 6)Varnishing of Starter winding and rotor. 

7)Application of Bectol Red on overhauling portion of winding & Bectol Corey on Lore Portion

 8)Bearing replacement.

9)Fitment of Motor. 

10) Coupling on motor. 

11)No load/Load Trial Including labour , Transportation etc.

Overhauling of Vertical Solid Shaft H.T. Motor used for V.T. Pump with replacement of DE & NDE Bearing , including following work.

 1)De-Coupling of Motor. 

2)Testing of Motor before & after overhauling

 a)IR & PT Test 

b)Winding resistance

 c)RTD Checks. 

d)Surge comparison Test. 

 3)Dismantling all removable cable of motors. 

4)Dismantling the Motor from the Starter. 

5)Through cleaning of starter and rotor. 

6)Varnishing of Starter winding and rotor. 

7)Application of Bectol Red on overhauling portion of winding & Bectol Corey on Lore Portion

 8)Bearing replacement. 

9)Fitment of Motor. 

10) Coupling on motor. 

11)No load Trial Including labour , Transportation etc.

Rewinding of 3Ph,50Hz, 415V squirrel cage Induction Motor Rewinding of Vertical Solid Shaft H.T. Motor The Scope of work as follows 

1) Decoupling, collecting faulty motor from site. 

2)To and Fro Transportation of Motor from site to works by the agency. 

3) Dismantling and checking stator and rotor visualy for any damages, recording resistance, lR values.

 4)Thorough Cleaning of all stator winding, rotor and assembly components. 

5 )Dismantling of all coils and recording all dimensions.

 6) Procurement of insulated class F copper conductors as per design and all insulating material. 

7) Manufacturing new coils as per design and rewinding of stator. 

9) Testing individual coils for resistance, inter turn, HV,Tan delta 

10)Testing of stator windings for resistance, inter turn, HV,Tan delta 

11)Heating , varnishing and curing windings in oven 

12) Necessary Repairs and Dynamic Balancing of rotor.

 13) If bearings found ok then reassembling the motor. 

14) If bearings found wornout then Supply & replacement of DE & NDE Bearings. & reassembling the motor.The Cost of of bearings will be paid extra. 

15) Checking windings lR, Resistance, inductance and surge test for inter turn. 

16)No load trial with low voltage and recording voltage, current , speed, bearing temperature , vibration etc. 

17)Painting of motor and despatch to site . 

18)Reerection at site ,No load & load testing complete. 

19)Dismantled old scrap mate

Rewinding of 3Ph,50Hz, squirrel cage Induction H.T. Motor Rewinding of Vertical Solid Shaft H.T. Motor The Scope of work as follows

1) Decoupling, collecting faulty motor from site. 

2)To and Fro Transportation of Motor from site to works by the agency. 

3) Dismantling and checking stator and rotor visualy for any damages, recording resistance, lR values.

 4)Thorough Cleaning of all stator winding, rotor and assembly components. 

5 )Dismantling of all coils and recording all dimensions.

 6) Procurement of insulated class F copper conductors as per design and all insulating material. 

7) Manufacturing new coils as per design and rewinding of stator.

9) Testing individual coils for resistance, inter turn, HV,Tan delta 

10)Testing of stator windings for resistance, inter turn, HV,Tan delta

 11)Heating , varnishing and curing windings in oven 

12) Necessary Repairs and Dynamic Balancing of rotor. 

13) If bearings found ok then reassembling the motor. 

14) If bearings found wornout then Supply & replacement of DE & NDE Bearings. & reassembling the motor.The Cost of of bearings will be paid extra. 

15) Checking windings lR, Resistance, inductance and surge test for inter turn. 

16)No load trial with low voltage and recording voltage, current , speed, bearing temperature , vibration etc. 

17)Painting of motor and despatch to site . 

18)Reerection at site ,No load & load testing complete.

 19)Dismantled old scrap material of cu winding ,bearing etc. shall be retained by agency.

                                                 HT MOTOR OVERHAULING IMAGES