Overview This listing is for a USED BALDOR ZD18H22O-ER-SOO1. Industrial-grade AC flux vector drive designed for precision motor control in demanding applications. Features keypad programming, multiple torque zones, and EMI/RFI shielding. See photos for details. Part No: ZD18H22O-ER-SOO1 Type: Vector Drive Condition: USED Voltage: 230 VAC Frequency: 50/60 Hz Phase: 3 Phase Power Rating: 20 HP Please message us with any questions.