Control Catalog Flippingbook

NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1

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— CR309 magnetic two-speed starters 200 horsepower maximum NEMA sizes 0-5, open, NEMA type 1, 3R, 12, 4/4X 600 volts maximum 50/60 hertz

Application Used for full-voltage operation of two-speed squirrel-cage induction motors at either speed. Consists of two mechanical and cross electrical interlocked contactors with two three-leg block type overload relays, one on each contactor. These bimetallic relays provide overload protection for each speed. 3-3 pole starters are for Two-Speed, Two Winding motors; 5-3 pole starters are for Two-Speed, One-Winding Consequent Pole motors. Proper motor-speed selection is obtained by adding pilot devices to correspond to each of the motor speeds. Refer to page 1-7 for features of basic starter. 2. Order forms not listed or with special modifications by complete description using a listed Product Number as reference wherever possible. Example: Similar to CR309E103AKA except with FAST-SLOW-STOP push button in cover. 3. Overload relay heaters for NEMA size 3 starters For two-speed, variable torque motors with full-load ampere rating, on low speed, below the minimum heater ampere rating listed in Size 3 table, page 1-155, contact nearest ABB Representative for suitable overload provision. 4. 50 Hertz starters 50 Hertz forms (at standard voltages) shown in table for 60 Hertz. See page 1-4 for 380-415 Volt horsepower ratings. 5. Product notes The two-winding Product Numbers listed are starters suitable for wye or closed delta connected motor windings. For open delta connected motor windings, contact your nearest ABB Representative. Open form, one-winding starters are wired for constant or variable torque motor application. Reconnection of control wiring may be required for constant horsepower application.Motor full-load current should not exceed continuous ampere rating of starter. Refer to Coil Table, page 1-6, for other available coils including 50 Hertz. External reset not included on standard listed forms (NEMA Type 12). Order heaters by complete Product Number from appropriate heater tables on pages 1-153 to 1-159. Product number selection instructions 1. Specify starter by complete Product Number. Example: CR309C104AKA

Typical NEMA size 1 two-speed controller in type 1 enclosure

Reference publications Instructions NEMA Size

Publication Number

0, 1

GEH-5190 GEH-4775 GEH-4806 GEH-4807 GEH-4839 GEH-5198

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