
LX10-23
- rotating speed of the generator
- windings of the generator for short circuits to earth on fields, exciters, rotor and stator
- windings of the generator for short circuits between phases
- windings of the generator for short circuits on fields, exciters, rotor and stator
- lose connections of fields, exciters, rotor and stator
- rectifiers on the rotor or from compound systems
- load which is already switched on
- excitate the generator according the field flash diagram
-Generator voltage remains / becomes low and is not adjustable
Check
- connections of the avr
- rotating speed of the generator
- setting of the frequency trip of the avr (red led)
- rectifiers on the rotor
- potentiometer or jumper between the terminals s and t
S
Missing phase detection (red led)
-Generator voltage remains unstable and is not adjustable
Check
- settings of the stability potentiometers from the avr
- connections of the avr
- rotating speed of the generator
- windings of the generator for short circuits to earth on fields, exciters, rotor and stator
S
distortions on the wiring U,V and W
S
distortions on wiring X1 and X2
S
distortions on wiring S and T
-Generator voltage to high and is not adjustable
Check
- connections of the avr (three phases)
- setting of the voltage potentiometer on the printed cardboard or the potentiometer between s and t
- presence of compound systems
- presence of self excitation systems or build up units
S
distortions on the wiring U,V and W
S
distortions on wiring X1 and X2
S
distortions on wiring S and T
-Fuse of the avr is blown
Check
- rating of the avr for the machine data
- windings of the generator for short circuits to earth on fields, exciters, rotor and stator
- windings of the generator for short circuits between phases
- windings of the generator for short circuits on fields, exciters, rotor and stator
- lose connections of fields, exciters, rotor and stator
- connections of the avr
- rotating speed of the generator
- rectifiers on the rotor or from compound systems
In all cases where you are not able to solve the problem with this help, we advise you to contact a expert or
let the generator check in a rewinding and repair workshop.