Small Case VersionThe 008-120-10 series of alternators were designed for automatic duplex control of motors or other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the output relay contacts change state each time the control voltage is disconnected. The "SP" Version has two options: (1) a lead/lag/automatic selector switch and (2) a push-to-test switch for added convenience in testing or trouble shooting.
A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.