🎯 Why It Matters
Voltage determines power supply compatibility. Using the wrong voltage destroys the fan instantly. DC fans offer higher efficiency and speed control flexibility. AC fans are simpler and work directly from wall power. EC combines AC input convenience with DC efficiency.
📐 How to Read
Rated voltage is the nominal operating voltage. Operating voltage range specifies acceptable deviation (typically ±10-15%). Startup voltage is the minimum to guarantee the fan starts spinning — critical for battery-powered applications.
📏 Typical Values
Consumer electronics: 5V/12V DC. Telecom/server: 24V/48V DC. Industrial: 24V DC or 220V AC. HVAC: 220V/380V AC. Energy storage: 48V DC.
🔗 Related Parameters
Current, Power, Speed Control, Efficiency
❓ Frequently Asked Questions
AC vs DC vs EC — which should I choose?
DC for electronics (efficient, speed control, safe low voltage). AC for simple ventilation (direct mains power, no power supply needed). EC for 24/7 operation (30-50% energy savings, best of both worlds).
What happens if I connect a 12V fan to 24V?
The fan will spin at roughly double speed for a few seconds, then the motor burns out. Never exceed the rated voltage by more than 10-15%.
Can I run a 24V fan from a 12V supply?
It may start but at reduced speed and airflow. Some fans have a minimum startup voltage of 50-60% of rated. Check the datasheet for startup voltage specification.