Thursday, October 22, 2009

http://www.ntfyfd.com/EnProduct.asp?EnBigClassName=Series%20of%20wind%20turbines&EnSmallClassName=10KW

Why do electrical equipments can’t be used after switching in system?

A: Check the remaining battery power, low battery can’t make the electrical equipments normal operation, if sufficient power, please check whether the battery and inverter wiring is right.


Q: Why can’t we charge batteries?

A: Check whether the blades are rotating, the generator will not output under too low (high) wind speed; if normal rotation, please switch off the battery and inverter wiring from generator and check the generator output with voltmeter; if normal, please check whether the battery is damaged according to battery manual, if the voltage is zero, please check whether the generator cable problems.


Q: Why don’t the blades rotate under normal wind speed?

A: If the output wire of generator is short connected, the blades will not rotate, please switch off the battery and inverter cable to check the generator cable.

Q: Can we extend the service time of electrical equipment by increasing the battery capacity?

A: Increase the suggested battery capacity will make the battery in a long time state of not full of battery, which will affect battery’s lifetime and cause a waste.


Q: How to maintain the generator?

A: The working environment of wind turbine may be extremely bad, may also be encountered in a variety of complex weather condition, so we need to perform periodic inspections and maintenance.

1、Check whether the tower cable is too loose/ tight, and adjust timely, especially in the early installation and after strong winds.

2、Check whether the components connecting cable is damaged, whether the connection point looses or rusts, and make sure the electrical equipments are safety.

3、The batteries should maintain a high degree of electrolyte, if lessens, add timely, please refer to battery manual for the specific method.

4、Before the storm or other inclement weather, to avoid unexpected loss, we suggest laying down the tower.

5、We suggest conducting a check every three months.


Q: Is the generator output voltage adjustable?

A: No, but you can choose the controller for your situation.


Q: Is the inverter output voltage adjustable?

A: No, but you can choose the inverter for your situation.


Q: How long is the general life of the generator?

A: Under normal circumstances, you can use for 15 years.


Q: How long is the generator warranty?

A: One year.


Q: How does the generator achieve yaw?

A: 3KW-20KW achieves yaw by using the anemoscope and anemometer to detect wind direction and wind speed, send signals to drive motor by using controller. While 300W-2000W uses mechanical mode to achieve yaw, generator axis deviates from the center pole some distance, at the same time, there is a degree between the tail rod and pole, at the small wind, the tail rod makes the generator facing wind under gravity, at the strong wind, the blades generator deflecting torque greater than the twisting torque generated by the tail rod gravity.


Q: Some users reflect that the controller output voltage is relatively low, what is the reason?

A: The controller adopts chopper principle to achieve voltage regulation, when the output voltage (voltage after rectification) higher than set voltage, the controller will discharge by SCR to reduce the output DC voltage in order to protect the battery, that is when the battery is full, the voltage will rise, we achieve floating charge by continuous discharge. The users usually disconnect the battery when measuring the output voltage, the controller is then in the discharge state, while the Avometer measurement is the average voltage, so it turns up the low voltage phenomenon. Of course, the measurement is normal using Millivoltmeter.






Copyright: Nantong FengYuan Wind Turbine Manufacturing Co.,Ltd.
Address: East Renmin Rd.Chongchuan district, Nantong City, Jiangsu Province, China.
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