AVR Burden Resistor Corroded
AVR Burden Resistor Corroded
(OP)
Hi
I have some question regarding the AVR of our high speed genset, the Burden resistor of the AVR corroded.. before this happen we experience high current reading ... Can you help me on this matter on how this matter transpire????...or what is its caused and why?
I have some question regarding the AVR of our high speed genset, the Burden resistor of the AVR corroded.. before this happen we experience high current reading ... Can you help me on this matter on how this matter transpire????...or what is its caused and why?






RE: AVR Burden Resistor Corroded
The power dumped into a resistor goes up by the square of the current. Doubling the current => four times the power => much hotter resistor => rapid oxidation/corrosion.
Could be getting too hot also destroyed an environmental protection coating.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: AVR Burden Resistor Corroded
We had a VT fuse failure that sent the AVR to full output. The stiff utility system kept the voltage and var output in check, but the current went high but still below the relaying pickup. The feedback resistor finally failed. Since it created the most smoke, we initially thought it failed first.