If a DC Volt/Loadmeter indicates 28 volts after starting the left engine, what might this indicate?

When a DC Volt/Loadmeter shows 28 volts after starting the left engine, it typically indicates a potential issue with the electrical system, such as a blown current limiter. The current limiter is designed to protect the electrical components by preventing excessive current flow. If it is blown, the voltage could rise higher than intended, potentially reaching levels like 28 volts. This could indicate an overload situation or a failure in the system's regulation, which would be a sign that further investigation is needed.

Normal operation usually corresponds to a specific voltage range, often around 24 volts for most DC systems in aviation and mechanical equipment. Thus, a reading of 28 volts is likely outside the normal parameters, suggesting that this is not indicative of normal operation.

A faulty voltmeter might also lead to misleading readings. However, the fact that the voltmeter indicates a specific voltage level that signifies potential over-voltage suggests that it is functioning properly, rather than indicating a faulty device.

Excessive load on the generator could lead to various symptoms, but a direct correlation with a specific high voltage reading like 28 volts often points more directly to the failure of a component within the system, such as a blown current limiter. Therefore, interpreting these readings requires understanding how