A reduced voltage starter reduces inrush line current and/or starting torque to a polyphase squirrel-cage induction motor. This is done by either reducing voltage applied to the motor during starting or by using only part of the motor windings during starting. GE can supply the three popular types of reduced voltage starters, each designed for specific applications requiring this type starting autotransformer, wye-delta and part-winding starters.

ABB Electrification NEMA Starter, Autotransformer Electromechanical Reduced VoltaABB Electrification, Series: CR331, 230 to 240 VAC, 50/60 Hz Frequency, 15 hp Motor, 3-Phase Block Overload Relay, 7.15 to 45 A Full Load, START/STOP Pushbutton Control, NEMA 1 Enclosure, 43 in H x 26 in W x 10-3/4 in D Dimensions

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_CR330CA111_Catalog.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_CR330CA111_Catalog.pdf
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_CR331DA111_Manual.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_CR331DA111_Manual.pdf
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1938ac76b0201677b5a64bbf3f21e7ff35a7b164eb0d0c4b4935b1fa076e392a.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1938ac76b0201677b5a64bbf3f21e7ff35a7b164eb0d0c4b4935b1fa076e392a.pdf

• Closed transition - no interruption in line current during transition
• 3-leg autotransformer - for balanced starting currents and minimum line disturbance
• Starting current and torque adjustment easily made by changing autotransformer taps
• Accurate adjustment - pneumatic timing relay permits easy adjustment of starting time on reduced voltage
• High torque efficiency - provides maximum torque per line ampere