① Rated power: used to indicate the capacity of the hydrogenerator, measured in kilowatts. The rated power divided by the efficiency must not be greater than the maximum power of the turbine shaft. ②Rated voltage: The nominal voltage of the hydrogenerator must be determined by technical and economic comparison in collaboration with the manufacturer. The current voltage of the hydrogenerator is between 6.3 kV and 18.0 kV. The larger the capacity, the higher the voltage rating. ③Rated power factor: ratio between the rated active power of the generator and the rated apparent power, expressed as cosφn. Hydroelectric plants located further from the load center often use higher power factors. As the power factor increases, the cost of the motor may increase. be slightly reduced.
1. Clean the connecting parts of the big shaft and bolts.
2. Insertthe bolt into the connection hole of the large shaft and tighten the bolt by hand.
3. Place the nut on the bolt and hand tighten the nut to ensure the nut contacts the head of the bolt.
4. Use a torque wrench or angle wrench to tighten to the specified torque or angle of the big shaft connection bolt of the hydroelectric generator set.
5. After tightening the bolts, pull hard on the bolts to check if the connection is firm.