SERVICE OFFERED BY US :  
 
  • Repair, rewind, redesign and reconditioning of ‘Heavy Electrical Rotating Machines and Equipments’ such as L.T. & H.T. Motors, Turbo Generators, Alternators, Synchronous Motors.
  • Specialized in Fabricating coils for ‘High Voltage Machines’ in class F / H Resin Rich Insulation System for voltages upto 11KV with multi turns, multi strands, transposed conductors, diamond , hairpin & concentric coils.
  • Replacement of Ferromagnetic and Magnetic Slot Wedges.
  • Re-staggering stampings of Stator & Rotor core to remove hot spot.
  • Changing of Insulation Scheme or change into VPI treatment (Resin – rich & Resin - poor).
  • Redesigning of Stator and Rotor winding.
  • Rebuilding of Commutators for D.C. Machine.
  
     
 

ELECTRICAL ROATING MACHINE OF 3.3 KV, 6.6 KV & 11 KV-

  
 
  • Wound Stator with VPI Resin Poor Insulation Scheme
  • Wound Stator with VPI Resin Poor Insulation Scheme
  
     
 

STAGGERING / BAR REPLACEMENT / STRIP WINDING OF ROTORS :

  
 
  • Rotor Staggering
  • Strip Winding with Resin Glass Binding
  • Bar Winding and Brazing
  • NDT / Liquid Penetration Testing
  
     
 

DIRECT CURRENT MOTOR FIELD / POLES / INTERPOLES REWINDING / OVERHAULING COMMUTATOR SKIMMING / REPLACEMENT

 
     
 

WE TRAVEL WHEREVER YOU NEED US:

  
 
Service offered by us includes Fault Analysis, on Site Repair and Rewind in case of very Large Machines, to eliminate the removal of same from its foundation. We at Sai Engineering Works , can trace the fault and return the machine in perfect condition with improved performance. Electrical machines repaired by us can be regarded as new and we standby the warranty for the same as those given for the new machines.
  
     
  SERVICE CONTRACTS :  
 

Maintenance planning eliminates expensive down time brought about by break down as Sai engineering works, schedule a routine periodic overhaul at times convenient by customer.

ANNUAL RATE CONTRACT (ARC)
ANNUAL MAINTENANCE CONTRACT (AMC)

  
     
  QUALITY CONTROL :  
 
Right from selection of material, conductor, forming of coils, temperature Maintained for moulding of coil, dust free environment while manufacturing of coils a strict check is maintained for dimensional accuracy to ensure correct fitment of the coils in stator core. Comprehensive testing of individual coils, bracing of the end winding, lashing the coils to supporting rings, inserting slot wedges under required pressure, forming silver brazing the end connections, insulating and maintain the exact distance by keeping uniform spacing is very closely monitored during rewinding. While rebuilding squirrel cage rotors, inserting cage bars and silver brazing to short-circuiting rings under required temperature is closely monitored as a part of quality control programme.
  
     
  PROCESS EQUIPMENTS:  
  COIL SHOP (Dust free Environment):
Coil Loop Winding Machine.
Coil Spreading Machine.
Hydraulic Coil Moulding Machine.		  
     
  VACUUM PRESSURE IMPREGNATION PLANT:  
 
The VPI process provides many benefits to the user. it completely seals the windings against moisture and vibration, provides greater mechanical strength, and improved corona protection. It vastly improves performance and reliability even in the hardest working environments. Machines last longer and require less maintenance. VPI is a process, which provides positive payback over a short period of time.
  
     
  TESTING EQUIPMENTS :  
 
  • H.V. Tester.
  • Surge Comparison Tester.
  • Insulation Resistance
  • Tan Delta Kit
  • Vibration Analysis
  • Bearing Life Analysis
  • Winding Resistance Meter
  
     
  DYNAMIC BALANCING MACHINE