Q : What is the essential difference between GD300-01A, GD300-01A-RT and GD300-21 special inverters for air compressors?
A: GD300-01A is single-VFD, only one variable frequency output, use to control the main motor of air compressor;
GD300-01A-RT is single-VFD integrated machine, one variable frequency output for main motor, and integrated one power frequency for cooling fan;
GD300-21 is dual-VFD integrated machine, two variable frequency outputs for main motor and cooling fan.
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