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Define fan spec at loaded point
SEPA developed very low power consumption fan series that is good for Ecology
SEPA also propose new fan speck definition
* Measure noise & power consumption at loaded point
Difference of single phase and three phase motor
Three phase motor
*Higher motor efficiency
*Lower noise & vibration
*Dual rotate direction
Auto cleaning function

Dusts and fibers attached at air inlet will be automatically removed.

Same function can do by using three phase motor and microcomputer chip.
But SEPA Auto cleaning fan is just single phase motor so becomes lower cost.