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Insulation Coordination Project Failure, temporary overvoltage, Transient…
Insulation Coordination Project Failure
temporary overvoltage
System failures
Electric charge rejection
Ferranti effect
Resonance and ferroresonance
ground faults
Longitudinal Overvoltages During Synchronization
Transient overvoltage
Line energization and reclosing
Capacitive Current Switching
Inductive Current Switching
Opening and closing switches
Powering transformers
Electric charge rejection
Atmospheric Overvoltage
Slow forward
Fast forward
Very fast forward
Failure in the bars associated with the Generator Manufacturing
Manufacturing process
Assembly of bars on the core
Slot filling gap
Deterioration in the insulating system
bar vibration
radial clearance
Wedge clearance
side clearance
electrical discharges
Voids between bar x core
Wedge clearance
side clearance
Fixing the set of bars
Mooring the headboards
Mooring on surge ring
damaged insulation layer
Failure to insert bars into the core
Bar isolation
Non-conforming insulating material
compression failure in insulation tapering
disorientation in insulation tapering
Insulating system impregnation
Soak Time failure
inadequate pressure
resin contamination
Resin cure time
Insulating materials
Low quality material
Expired material
Inappropriate material