Multi-phase AC motors of an output exceeding 750 W but not exceeding 75 kW: slip ring motors, wound rotor machines used where high starting torque and speed control are needed.

State power, voltage, rotor voltage and brushgear type; provide drawings. Electric motors and generators ship with shafts locked and terminal boxes sealed on skids or in cartons, with nameplate data (kW or kVA, voltage, frequency, speed, IP rating, efficiency class) stated on the invoice; check destination efficiency rules, CE or BIS marks, and corrosion protection for sea freight, and plan heavy-lift handling for large frames.