2 Engineering2.5 Motor SelectionDE1 variable speed starter 09/14 MN040011EN www.eaton.com 312.5.2 Circuit types with three-phase motorsThe three-phase motor's stator winding can be connected in a star or deltacircuit as per the rated operational data on the rating plate.figure 19: Example of a motorrating platefigure 20: Configuration types:Star-connected circuit (left), Delta circuit (right)Examples based on figures 19 and 20DE1-124D3… (ULN = 230 V): Motor in delta circuitDE1-342D1… (ULN = 400 V): Motor in star connection2.5.3 Connecting EX motorsThe following aspects must be taken into account when connectingexplosion-proof motors:• A DE1 variable speed starter can be installed inside an explosion-proofenclosure within the hazardous location or inside a control panel outsidethe hazardous location.• All applicable industry-specific and country-specific regulations forhazardous locations (ATEX 100a) must be complied with.• The specifications and instructions provided by the motor'smanufacturer with regard to operation with a variable speed starter –e.g., whether motor reactors (dV/dt limiting) or sine filters are required –must be taken into account.• Temperature monitors in the motor windings (thermistor, thermo-Click)are not to be connected directly to DE 1 variable speed starters but mustbe connected via an approved trigger apparatus for EX areas i.e. EMT6.1410 mi n230/400 V 3.2/1.9 A50 Hz-10,75 KW cosϕ 0.79△ U1 V1 W1W2 U2 V2U1 V1 W1W2 U2 V2
