ABB ACQ80-04-18KW5-4 18.5 kW solar pump drive. ABB ACQ80-04-18KW5-4 is an ACQ80 solar pump drive rated 18.5 kW, 38 A, 380-480 V AC / solar DC, frame R3, IP20. Designed for solar irrigation, borehole pumps, booster stations and off-grid water systems with efficient motor control and application-specific protection.