Infrared Training Center

Monday, August 4, 2008

How Hot is Too Hot?

Here a thermographer found a temperature of 134°C on a discharge resistor of a capacitor bank panel. The question is "Is this a problem or is it normal operating temperature?"

Discharge resistors are in the circuit when the capacitor is disconnected. It will be hot by dissipating the energy stored there. The temperature limit would be specific to the resistor specifications.

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