Electrical Frequency range of Inverter Compressor of Daikin VRV

[biengates]

Hello everyone,
Who can show me the electrical frequency changing range of inverter compressor in ourdoor unit of Daikin VRVIII? As me know, for Toshiba VRF inverter compressor: the electrical frequency can change from 15-100 Hz, but I don't know about Daikin VRV III.

[brunstar]

you would be best to go to the daikin web site to check out the technical data, it can be downloaded there.
up to about 190 htz or so.

[nicolacozma]

Maximum operation frequency of the inverter compressor depends by capacity of the outdoor unit as is shown bellow:
5HP 188Hz
8HP 266Hz
10,12HP 210Hz
14,16HP 210Hz
18Hz 266Hz
If you use the Service Checker you will find on the right side of the "inverter frrequency" parameter the maximum value for that parameter.

[frank]

Using the motor speed formula ((f x 60/pp)-ff))
(frequency x 60 divided by pole pairs minus friction factor)(usually 4%)

for an 18HP unit

((266 x 60/2)-4%) = 7660rpm at full speed (assuming a 4 pole motor)

[nicolacozma]

To be precise the speed for an 18HP is 7980rpm(declared in technical specifications)because the slip is 0. The rotor has permanent magnets (neodium material) and the rotor magnetic field can follow exactly, without slip, the stator magnetic field.

[frank]

..........I did say 'usually 4%' :D :confused:

[nicolacozma]

..........ok!:D