Ease BLDC Ceiling Fan

Details

A ceiling fan built around two numbers and their quotient. The 1200 mm draws 28 W at full speed and moves 220 m3/min of air, and 220 divided by 28 is 7.9 m3/min/W. That quotient is the service value, and the BEE star is computed from it rather than awarded on top of it, so we print all three figures and let you check the label against them. This is where the category cheats. The premium for a BLDC fan is justified by an air delivery figure almost nobody measures, and because the star is derived from that figure, inflating the air delivery inflates the star with it. Ours is measured to IS 374 at rated voltage, and IS 374 sets a minimum of 210 m3/min for a 1200 mm sweep, so 220 is a modest number honestly arrived at rather than a large one asserted. The second thing worth knowing is what actually fails on a BLDC fan. It is not the motor, it is the driver electronics, and on almost every BLDC fan sold the driver is potted into the canopy or buried in the down rod, which turns a Rs 600 part into a new fan.

• 220 m3/min at 28 W on the 1200 mm, service value 7.9 m3/min/W, and the 5 star rests on exactly that quotient
• Air delivery measured to IS 374 at rated voltage, not a free air figure and not a calculated one
• Copper stator winding, three phase, 11 ohm per phase at 25 C. Resistance is how you tell copper from copper clad aluminium, because CCA of the same gauge reads about half again as high, and at the terminal the two look identical
• Driver module unclips from the canopy without dropping the fan, and it is stocked at a published price
• Runs from 140 V to 285 V, so it holds speed on an inverter and through a brownout
• Aluminium blades, individually replaceable, and no capacitor anywhere in the fan to dry out
• Spares held 10 years. What makes that real is a spares bank bought with the first production run, a ten year supply clause with the maker, and the canopy, blade and driver housing tooling held in our name
• 2 years comprehensive, 5 years separately on the BLDC motor
• The 32 dB(A) we publish is motor noise at 1 m to the side. Under the fan at full speed, where you actually sit, air noise reads about 45 dB(A). The category prints the first figure and calls it the fan's noise; both of ours are above
• Left out: no capacitor to fail, no potted driver, no wall regulator to hum, and no remote only control, because the wall switch still works when the remote is lost
• There is no Shuunnya service network. A warranty claim is answered by sending the part, and the driver is a canopy level fit a local electrician can do. We do not promise a turnaround, because we cannot keep one yet