Our Work

3E

GE 8309 S Frame

Issue

  • Welds Broken Where The Bars Meet The Endrings
broken welds before
Before
broken welds after
After

Solution

  • Removal Of Aluminum Cage Bars
  • Replacement Of All Cage Bars With Copper Alloy
  • Endrings Brazed To Cage Bars
  • Machined
  • Dynamically Balanced

Jenkins

844 HP 877 RPM NEW LAMINATION ROTOR REPAIR

Issue

  • Melted copper bars lifted through top of slots, destroying rotor lamination’s
melted copper bars before
Before
melted copper bars after
After

Solution

  • All new lamination’s and spacers
  • All new fabricated copper alloy bars inserted with tight interference
  • Thicker redesigned endrings brazed to cage bars
  • Machined to spec

Crimson

350 hp 1080 rpm

Issue

  • Destroyed Iron
  • Melt Cage Bars And End-rings
melt cage bars before
Before
melt cage bars after
After

Solution

  • Removal Of Cage Bars
  • Separation Of All Lamination
  • Re-insulation And Restack
  • Replacement Of All Cage Bars
  • Double Endrings Brazed To Cage Bars
  • Machined
  • Dynamically Balanced
  • Shipped To Customer 9 Days After Arrival

Demaria

3000 hp 3600 rpm

Issue

  • Majority Of Bars Broken
  • Iron Shorted And Melted
iron shorted before
Before
iron shorted before
After

Solution

  • Removal Of Cage Bars
  • Separation Of All Lamination
  • 1/2 New Laser Cut Lamination Combined With 1/2 Original Lamination And Restacked
  • Replacement Of All Cage Bars
  • Endrings Brazed To Cage Bars
  • Stainless Steel Retainer Rings Shrink Fit To Endrings
  • Machined
  • Dynamically Balanced

Continential

1600 HP/1800 RPM

Issue

  • Lose original bars
  • Fused laminations
  • Cracked welds on endrings
Cracked welds before
Before
Cracked welds after
After

Solution

  • 12 Day Turn Around
  • 3/4 Of Lamination Core Restacked and Refurbished
  • All New Bar Material Milled And Brazed
  • Machined
  • Dynamically Balanced
  • Shipped Back To Customer

IPS

600 hp 1200 rpm

Issue

  • Melted Cast Aluminum Alloy Cage And End rings
  • Partial Destroyed Lamination’s
IPS-Before-2
Before
IPS-After-1
After

Solution

  • Removal Of All Aluminum Alloy Cage And Endrings
  • Unstacking Then Restacking Of Original Lamination’s With New Insulation
  • All New Copper Alloy Fabricated Cage Bars
  • New Copper Endrings With Matched Cooling Fans
  • Machined And Epoxied
  • Dynamically Balanced
Electrical Apparatus offers a number of custom services built to suit your repair needs