Control of AC Electric Motors

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Across 1. Type of overload 3. Additional contacts for alarm indications 5. Device in starter to prevent automatic restarting 7. Condition produce in motor current flow 8. Most starters are designed to reduce this at start-up 10. Device fitted in 3 phase starter to prevent cross-connection of supply 12. Thermal overloads are made from this type of metal 14. Some starters may have these stop devices connected 15. Method of starting large motors 16. Type of overload 17. Some starters may have additional start/stops 18. Fluid used in some type of overload devices

Down 1. Overloads automatically provide this 2. Direct-On-Line starter 3. Method of strating large motors 4. Device found in starter 6. Name of condition resulting from loss of one phase of the supply 9. Device found in starter to protect motor 11. Semi-conductor device embedded in motor windings 13. Device used to control motor

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