Generator Alternator & AVR
Why Does Generator Voltage Drop Under Load?
If your generator voltage is normal at no load but drops when load is applied, first
K Wong
2026-08-20
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Technical articles and delivery insights on diesel generator sets and industrial load banks, written from a manufacturer and exporter’s perspective.
If your generator voltage is normal at no load but drops when load is applied, first
Generator voltage can fluctuate because of unstable engine speed, AVR problems, poor sensing connections, excitation faults,
If your generator voltage is too high, first check the output frequency, engine speed, AVR voltage
If your generator is producing voltage but the output is lower than its rated value, the
A bad generator AVR can cause no voltage, low or high voltage, unstable voltage, or voltage
If your diesel generator starts and runs normally but produces no output voltage, do not assume
WALT Power is a China-based generator manufacturer and supplier, offering diesel generator sets for portable, residential, commercial, and industrial applications, as well as load banks.