Q: Why would you want to allow your wind turbine to free spin?

foolios
foolios Solar Expert Posts: 53 ✭✭
in Wind Power Generation #1
Looking up brake info, I see options on the brakes.
Why would free spin be an option? I read free spin happens when loads are missing and the battery is overvoltage; which could result in the destruction of the turbine.

Switch Positions:

  • Up -- Turbine is connected to the battery or rectifier. (Switch is closed)
  • Middle -- Turbine is fully disconnected, free spinning.
  • Down -- Turbine wires are shorted together. Brake is on.
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Comments

  • Estragon
    Estragon Registered Users Posts: 4,496 ✭✭✭✭✭
    #2
    Maybe so you can work on it with circuits open, check to make sure it spins with no load, etc?
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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  • mcgivor
    mcgivor Solar Expert Posts: 3,854 ✭✭✭✭✭✭
    #3
    Kind of what I was thinking, a neutral gear of sorts, to test the bearings without load or brake.
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery with Battery Bodyguard BMS 
    Second system 1890W  3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.  
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  • foolios
    foolios Solar Expert Posts: 53 ✭✭
    #4
    Excellent.

    Thanks.
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,654 admin
    edited April 2020 #5
    A lot of double pole double throw switches have a middle position where they are off...

    Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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