Can you please explain the Z = 5%? Is it transformer’s impedence or drive’s impedence? If it is transformer’s impedence, how can it reduce due to the reduction of load (drive)? Isn’t trans’ winding’ impedence a constant?
Found this on Eaton's website: "Reactors are typically rated between 1.5% and 5%, with 3% being the industry standard due to the diminishing returns and voltage drop issues that higher levels can deliver. Reactors rated 3% typically deliver approximately 35-38% current distortion, with 5%-rated reactors or equivalent DC link chokes dropping this only nominally." My understanding is that you don't get much reduction in harmonic distortion past 5% for the material required. And you'd also have to worry about voltage drop and larger cables, etc.
Can you please explain the Z = 5%? Is it transformer’s impedence or drive’s impedence? If it is transformer’s impedence, how can it reduce due to the reduction of load (drive)? Isn’t trans’ winding’ impedence a constant?
Its transformers impedance, percentage value representation depends on load current, that's why it is reduced when inverter capacity changed to 15hp
Why all manufactures limit impedance up to 5% ? why we cant increase it to get more harmonic mitigation ?
Found this on Eaton's website: "Reactors are typically rated between 1.5% and 5%, with 3% being the industry standard due to the diminishing returns and voltage drop issues that higher levels can deliver. Reactors rated 3% typically deliver approximately 35-38% current distortion, with 5%-rated reactors or equivalent DC link chokes dropping this only nominally." My understanding is that you don't get much reduction in harmonic distortion past 5% for the material required. And you'd also have to worry about voltage drop and larger cables, etc.
@@nbarrientesThanks!