Paul Chigo
    I ordered 2 Sets 11KV NER from JDC for our projects 2 years ago, the quality and delivery time were very good, NER works perfectly unit now, we will treat JDC as our valuable partners!!
    Jeffery Bell
    I found JDC because Vishay/TT current sense resistor was shortage, JDC provided alternative parts in a short time and their parts can fully replace Vishay/TT part with much better lead time.
Contact Person : Chris
Phone Number : +8615602914508
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1.35MJ Crowbar Resistor Air Cooling

Place of Origin CHINA
Brand Name JDC
Model Number CR
Minimum Order Quantity 10 Units
Price US$50.00-US$100.00
Packaging Details Bulk in Carton
Delivery Time 2 Weeks
Payment Terms T/T, Western Union
Supply Ability 10,000PCS per month

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Product Details
Rated Energy 10KJ-10MJ Structure Air Cooling
Resistance Range 0.01Ω-0.1Ω IP Grade IP20-IP23
Resistor Material Stainless Steel
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1.35MJ Crowbar Resistor


Crowbar Resistor Air Cooling

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Product Description

1.35MJ Crowbar Resistor, Wind Power Generation


Crowbar Resistors


Crowbar resistors are three phase resistance banks which are connected to the rotor windings of the DFIG (Doubly-Feed Induction Generator) such as wind power generator.

They are used to prevent damage to the inverter circuits attached to rotor side when a fault occurs in the grid. DFIG power converter, which has a restricted over-current limit, needs special attention during faults in the grid. If the rotor current or DC link voltage reaches the threshold value, crowbar resistors disconnect the converter in order to prevent the generator turning into a squirrel cage induction machine. By crowbar resistors, the DFIG could stay connected to the grid and continue its operation.

The crowbar resistors should be high enough to limit the short circuit rotor current and also they should be low enough to avoid too high voltage in the rotor circuit. The crowbar resistor should be designed with low inductance and capable of handling very high currents for short periods.