hitachi — Main Pump P-Q Curve

OPERATIONAL PERFORMANCE TEST / Standard MAIN PUMP P-Q CURVE P-Q Control (Torque Control) (REFERENCE: Measured at Test Stand) Rated Pump Speed: 2000 min -1 (rpm) Hydraulic Oil Temperature: 50 ± 5 ° C (122 ± 41 ° F) T4GB-04-02-001 T4-2-11 A B C D L/min Flow Rate Delivery Pressure MPa (kgf/cm2) Delivery Pressure MPa (kgf/cm2, psi) Flow Rate L/min (gpm) A 4.9 (50, 712) 340±3 (90±0.8) B 19.6 (200, 2849) 340±3 (90±0.8) C 26.5(270, 3853) 315±6 (83±1.6) D 29.4(300, 4274) 283±6 (75±1.6)