shop & field services · new buss rings . all field coils and pole pieces removed . insulation...
TRANSCRIPT
SHOP & FIELD SERVICES
Isotropic insulation
Isotropic insulation
New Buss Rings
All field coils and pole pieces removed
Insulation cured and tight for added heat sink
Reinsulated turn to turn before assembly to
pole piece
Precision V-blocks
Hannon fabricated drive unit
Induction heaters for thermal expansion
Fabricated manifold to apply liquid nitrogen to shaft
Added risers supports for extra stability
Rotor and stator floated together on sight to save
shipping cost
Isotropic insulation installed to assure mechanical and electrical
strength
Hannon designed risers
Field coils
Cage winding
Shorting ring
Altered shaft
Fabricated base
Damaged insulation
Shorted bars
New frame fabricated and stressed relieved
New laser cut laminations
Weld , machine and new key to correct loose fit
Lifting device designed, engineered and tested on site
Rigging and lifting devices supplied by Hannon service vehicles
Cracked rotor bars
90
95
100
105
110
115
120
125
130
135
140
145
150
155
160
°F
S02 S03 S04
S05S06
S07
S01
Series1
Eccentricity frequency determined by # of
rotor bars times speed.
Searches for 1st and 3rd sidebands of
eccentricity frequency.
20db above noise level is cause for
concern.
