GP-21 is a primary source of constant frequency AC power of the aircraft electrical system. It consist of an alternator driven by a hydromechanical constant speed drive. The constant speed drive provides the alternator shaft rotational speed of 12000 rpm.
|Rated power||30 kVA|
|Working fuel||oil AMG-10|
|Working fuel temperature||-40…+140 °С|
|Environment temperature||-60…+215 °С|
|AC current frequency||400±4 Hz|
|Rated current voltage||208/120 V|
|Overall dimensions||504х235 mm|