A DC Compound Motor connects the armature and fields windings in a shunt and a series combination to give it characteristics of both a shunt and a series DC motor. This DC Compound Motor is used when both a high starting torque and good speed regulation is needed. The DC Compound Motor can be connected in two arrangements: cumulatively or differentially. Cumulative compound motors connect the series field to aid the shunt field, which provides higher starting torque but less speed regulation. Differential DC Compound Motor have good speed regulation and are typically operated at constant speed.