Bulletin 1410 Motor Winding Heater 5 Bulletin 1410 • Solid-State Design • Automatic Operation • No Adjustments Required Motor Winding Heater TABLE OF CONTENTS Description Page Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35 Description Page Approximate Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-36 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35 Description Bulletin 1410 Motor Winding Heater is intended for use with 3-phase AC motors to guard against damage caused by condensation build-up on motor windings, which can occur in high-humidity environments during motor off times. This device is not intended to be used to dry out damp motors. Bulletin 1410 Motor Winding Heater is designed for use with 3-phase AC squirrel-cage motors controlled by automatic full-voltage starters. For applications involving reduced-voltage starters, multi-speed starters, synchronous motors, or the use of power factor correction capacitors, consult your local Allen-Bradley Distributor or Sales Office. Approvals: CSA Certified UL Listed 5-34 Your order must include: • Cat. no. of the motor winding heater selected. Bulletin 1410 Motor Winding Heater Product Selection ➊ Motor Voltage (V) +10%, –15% 3-Phase, 60 Hz Motor Hp Range Cat. No. 230 460 575 15…50 25…100 25…100 1410-EOA47 1410-EOB50 1410-EOC50 230 460 575 50…100 100…200 100…200 1410-FOA50 1410-FOB54 1410-FOC54 230 460 575 100…200 200…400 200…400 1410-GOA54 1410-GOB59 1410-GOC59 230 460 575 200…300 400…600 400…600 1410-HOA57 1410-HOB62 1410-HOC62 ➊ For applications requiring different horsepower, kilowatt and voltage ranges than those listed, consult yopur local Allen-Bradley Sales Office. Connection Diagram See Applicable Codes and Laws. Motor Branch Circuit Protection L1 M LT1 L2 LT2 L3 OL's T1 T2 LT3 To Motor T3 Motor Starter Contacts To “L2” To “L3” To "LT3” To "LT2” L2 FU2 Fuse Condition Indicator (Optional) L3 LT3 FC1 FU1 LT2 Motor Winding Heater Specifications Output Voltage Regulation Voltage applied to motor winding will vary ±5% maximum for line voltage variations of +10%, –15%. Ambient Temperature Range Operating: +0…+50°C (+32…+122°F) Storage: –25…+85°C (–13…+184°F) Additional SCR Protection Metal oxide varistor protects against voltage surges. RC snubber circuit limits rate of change of circuit voltage. True RMS Output Current Approximately 15% of full load current. Power Delivered to the Motor Approximately 1 to 3 W/Hp. 5-35 Bulletin 1410 Motor Winding Heater Approximate Dimensions Dimensions are shown in millimeters (inches). Dimensions are not intended to be used for manufacturing purposes A B C . 5-36 Cat. No. A B C 1410-EOA47 1410-EOB50 1410-EOC50 146.1 (5-3/4) 88.9 (3-1/2) 114.3 (4-1/2) 1410-FOA50 1410-FOB54 1410-FOC54 204.8 (8-1/16) 108 (4-1/4) 177.8 (7) 1410-GOA54 1410-GOB59 1410-GOC59 238.1 (9-3/8) 146.1 (5-3/4) 206.4 (8-1/8) 1410-HOA57 1410-HOB62 1410-HOC62 279.4 (11) 244.5 (9-5/8) 207.2 (8-5/32)