enertik GE-600-24, User Manual

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8 Trouble Shooting

8.1 Wind turbine’s abnormal vibration

Wind turbine vibration ia mainly caused by the following reasons:

1. Guy rope is loose and needs to be tightened;
2. The blades mounting bolts on are loose and need to be tightened;
3. The surface of blades freeze and needs to be removed;
4. The blades have been distorted, detected and need to be replaced by contact of supplier.

CAUTION: Turbine operation should be stopped as soon as abnormal vibration happened, and then 
solve problems.

8.2 Abnormal noise

Besides wind turbine running well creates noise, it is probably cause by friction between rotor 
and stator, bearing damaged, in case of these situations,  please contact supplier to solve 
problems.

8.3 Rotational speed dramatically decreases

Wind turbine rotational speed dramatically decreases under heavy wind condition, which can 
be mainly divided into normal deceleration and abnormal deceleration:

1. Turbine normal deceleration ia mainly due to wind turbine over-voltage protection, dump 
load, electromagnetic braking and normal short circuit, which la wind turbine regular work;

2. Turbine abnormal deceleration ia mainly due to friction between rotor ans stator, bearing 
damaged, generator burned, in case of these situations, please contact supplier to solve 
problems.

8.4 Wind Turbine lnsensitive to Adjust Blades Direction

GE wind turbine mainly adopts tail yaw to adjust the blades direction, if it is not sensitive to 
adjust blades direction, which is because the turbine alternator shaft is damaged, the tower is 
out at vertical, in case of these situations, the shaft should be replaced and tower verticality 
must be adjusted.

8.5 Generator Abnormal ac Output

Generator abnormal AC output mainly is divided into:

1. Generator output voltage is low, which is due to low wind speed or long connection line,  
small wire size results in high pressure drop, therefore, selection of wire size should refer to 
wire regulations and requirements.

2. Generator three-phase output voltage is imbalanced. Voltage unbalanced rate shall not 
exceed 10% (same wind speed or rotational speed) in accordance with related national stan-
dards, if exceeded, the generator fails, please contact supplier to solve problems.

3. Generator has no output voltage under heavy condition, check whether generator is normal 
short-circuited or not and three-phase resistance values are balanced or not (uncharged 
operation), if imbalanced, the generator fails, please contact supplier to solve problems.

8.6 Generator has AC output but no DC output

Off-grid wind turbine charges battery, wind turbine transfers AC to DC by controller, the DC 
voltage must be higher than battery voltage, or turbine will not generate power.

If AC input voltage of the generator is normal (voltage higher than battery voltage after rectifi-
cation) while there is no current display on DC terminal, check whether the controller's wind 
turbine Indicator work or not (blinking), connection is normal or not, connection terminals are 
burned or not, fuses are burned out or not etc. Analyze these situations and get rid of the 
troubles. In the event of burning of controller, please contact supplier to solve problems.