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View Full Version : Transformers, Phase Converters and VFD



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  1. correct 3 phase wiring
  2. 30 hp motor problem
  3. 4 speed motor help- wire ID?
  4. Wire gauges / amperage for rotary converters
  5. OT: step down transformer sizing
  6. Motor Whistles When Connected to VFD
  7. Line to Line voltage on a new RPC ? 6% ?
  8. Wiring diag. for a Doall Blade Welder?
  9. Control Transformer Needed Badly!!!!
  10. Bypass Drum Switch to Use VFD?
  11. Quieting a VFD driven motor?
  12. Spindle speed - how to accurately display
  13. Way Ot
  14. Motor Problem
  15. Need help wiring inherited Temco RPC
  16. rerversing a 1 ph motor
  17. Inverter Drive For Small Lathe
  18. Testing 3 phase Motor and Wiring
  19. 7.5 hp rpc
  20. Puzzling VFD/motor interaction
  21. Boston Gear Ratiotrol
  22. Need new lathe motor (?)
  23. Capacitance for solar system
  24. KO Lee cnc surface grinder eletrical diagram needed
  25. buck transformer
  26. 440v to 240v conversion ++
  27. VFD And AC Synchronous Motors: A question
  28. VFD and motor max hZ question/opinion
  29. How about rotary phase converters?
  30. Opinion on Static Phase Converters
  31. Junk yard 3 phase motor ??
  32. Running motor with 208 V on 240 V feed
  33. Starters and relays
  34. VMC battery charging
  35. Derating VFD
  36. two motors running one machine
  37. VFD on a rotary converter ?
  38. Best Place to buy a VFD
  39. ? Use undersized VFD to start rotary converter
  40. Maybe an Old Post..Need CNC phase converter
  41. Gathering Parts - Quick Question!
  42. 240-480 volts 3ph transformer with phase converter?
  43. 25hp rpc amp needs
  44. VFD Settings help needed
  45. Need Help wiring old lathe
  46. Removing a conduit box
  47. How do I find generated leg and control circuit?
  48. can I use this motor for an "add on" for my rpc
  49. Oversizing RPC
  50. Myford ML 10 + VFD ?
  51. Pony start + idler + transformer = ???
  52. Proper RPC Grounding
  53. Utility company transformer sizing
  54. Graziano SAG 12 Step up Transformer?
  55. I need a VFD Guru's advice
  56. Additive, Subtractive Xfrmr and angular displacement
  57. Question about placement of RPC
  58. Testing/Identifying Six-wire Two-speed Single-voltage Motors
  59. Most basic rpc for dummies (like me)
  60. VFD's and CNC's: A couple questions
  61. dual idler rpc question
  62. Better than half way there
  63. Wiring Weiler LZ 280 help
  64. RPC Help needed!
  65. 230/1 to 480/3 to power AB 1395 DC Drive
  66. braking circuit for a 220 motor
  67. New 3 phase service-What voltage?
  68. Need 3 phase power
  69. HP Limitations
  70. What is the function of this MG set?
  71. Mitsubishi vfd
  72. Manual needed for Volkmann AD-2 vfd
  73. 3 phase 2 Speed motor wiring help?
  74. Can I use a vfd as a phase converter for a cnc lathe
  75. Minimum hp on RPC
  76. Dumb questions on phase converters
  77. Rotary vs Static - Need Help with Project
  78. Newbie in need of help! Drum switch redo!
  79. remote start/stop wire size
  80. Wiring up 4 or 5 machines using a RPC?
  81. dead baldor inverter, need help please.
  82. VFD Information
  83. Leary about a static
  84. WNY Supply - Fed Up and Need Help
  85. RPC and Magnetic Brake Problem
  86. What VFD for 2.2kw Spindle 3ph
  87. Who makes dust proof VFDs?
  88. 240 3ph to 460 3ph?
  89. Need advice on Leeson VFD for Clausing 6913
  90. 3 welder on rotory converter???
  91. Rheostat question for 2hp DC motor
  92. Phase Perfect Questions
  93. OT: 3 phase motor???'s
  94. Need Help with VFD and Latching Start
  95. Can I get savings by changing motor?
  96. Best Deals on 460V VFD's and 2 Spd. Mtr/VFD?
  97. Newbe needs help.
  98. Toshiba VF-S9 VFD voltage change?
  99. new to me drive supplier
  100. VFD - torque loss at low rpms and is this possible?
  101. Shop made line reactor
  102. Build your own VFD
  103. Rewiring 3 Phase Motor
  104. Wiring 3ph VFD to 1ph supply?
  105. Any experience with Cutler Hammer AF93 VFD
  106. Wtb 25-30hp Rpc
  107. Need Help with F4 KEB
  108. Power a VFD from shared circuit?
  109. VFD. Buy it now or buy it later?
  110. 120/240 motor generators slightly off topic
  111. Cathode Protection half sell
  112. MANUAL NEEDED: Allen Bradley IP20 161S
  113. Will this European Motor Work in the U.S.?
  114. 3 phase plus neutral
  115. TECO AC drive questions or comments needed
  116. VFD and inverter drive motor?
  117. Dead Circuit in shop
  118. AB motor control
  119. Ratcheting Crimping Tool
  120. single vfd running two motors?
  121. Single phase motors May run off VFDs!
  122. Mfg Comments on Multi-motor VFD applications
  123. Integrating VFD with X Power Feed
  124. Tachometer Display for Mill
  125. Useful Motor and VFD tutorial
  126. 20 kw generator
  127. DrivesWarehouse.com
  128. VFD and Whitcomb Blaisdell
  129. Buying used run/start Caps
  130. Yaskawa servopack rotation change
  131. VFD Help... GE af300 mini
  132. Wiring Static Phase Converter to Drum Switch
  133. VFD on Surface Grinder (two motors on 1 VFD)?
  134. VFD's and braking
  135. 10hp RPC to start 10hp motor.
  136. My First 5hp Phase Converter
  137. Electrical Dumby In Need Of Help
  138. Phase Balance Questions?
  139. Surface grinder keeps tripping reset button
  140. VFD & Motor Starter
  141. -aluminum cooling fan for VFD applications
  142. encloser box
  143. what is special about a Phase a Matic idler?
  144. 200 V motors
  145. Need a copy of VFD's for dummies
  146. 3 wire to 4 wire conversions ?
  147. Lathe only pulling current on 2 legs?
  148. step down xfmr as step up- confusing results
  149. Options for Increasing HP of Rotary Phase Converter
  150. Options for Increasing HP of Rotary Phase Converter
  151. Clausing / Colchester Square Head Wiring Diagram?
  152. anyone familiar with AB 1336S VFDs
  153. program input parameter 1336S
  154. RPC installed and BROWNING OUT
  155. converter confusion
  156. The need of a earth ground ? on RPC.
  157. Motor/Generator jnstead of Phase Convertor
  158. Power Factor?
  159. RPC Benefits
  160. 1/4 HP Marathon motor help needed.
  161. RPC Wiring Help.
  162. Shop/machine voltage question
  163. Economical solution for variable speed control water pump
  164. WNY Control Panel
  165. Yard Sale Find
  166. constant torque
  167. Phase convertor for my cnc mill... I only have single phase
  168. 3 Phase converter?
  169. WNy Supply
  170. RPC Panel On The Way - Breaker Configuration?
  171. Single pole breaker on 220 bus?
  172. Ok, two (probably stupid) questions...
  173. non-inverter rated motors on a VFD
  174. Direct Drives and Controls PRAISE
  175. Phase Converter to Transformer
  176. Cincinnati #2 440 - 220v tilt-head
  177. Wiring Question - CH 3 pole twin break starter
  178. starting problem
  179. Effects of lag/spike on the generated leg when using a transformer
  180. VFD voltage spike
  181. Electrical ? for OLD Norton Grinder 440v motor
  182. RPC idler-how hot should it run?
  183. TECO VFD N3 with 1 HP Bridgeport Step Pulley
  184. Allen Bradley Starter
  185. vfd and hydraulic pump update
  186. ot whats the best way to find crack in shaft
  187. Low Voltage Control for starters - isn't 120V low enough?
  188. rpc and motor reversing
  189. Welder Transformer Probs.
  190. How Much In-Rush Current on 7.5 HP RPC Startup?
  191. Alternatives to a NEMA enclosure
  192. Generator/RPC/Lathe issue!
  193. Rewire the mill or the shop?
  194. 3 phase off/on switch
  195. Too many start capacitors
  196. Place to buy VFD in California
  197. 25 hp rotary phase converter plan wanted
  198. Mill up and Running with FM50
  199. question for electron goo roos
  200. Motor gearing momentum and torque
  201. Inverter Drive Motot
  202. Can big 3ph DC drives run on single phase
  203. Flux Current Control? Wht is it?
  204. OT: Running power line under existing driveway
  205. wye-wye transormer
  206. hydraulic pump with vfd
  207. German tool grinding motor needing help
  208. Help me choose a voltage
  209. Anyone familiar with TECO N3 drive?
  210. Idler in addition to Arco RPC
  211. Rotary or VFD to feed a transformer?
  212. TECO FM50 Remote Connection
  213. Single phase 60hz to single phase variable speed
  214. using two different phase converters
  215. Need a 3 phase switch
  216. Simple circuit design?
  217. Info wanted: Allspeed VT130G (badged Toshiba?)
  218. COM1 access to your drive?
  219. Star/delta motor and VFD wiring situation - looking for some opinions
  220. converter output also
  221. Frequency Drive problem
  222. amp draw
  223. VFD Multi Motor Application
  224. using 3 ph starters w/ 1 ph motors
  225. seeking nema plug info
  226. 30hp Rpc
  227. Switching light ballast voltage
  228. One VFD for three motors
  229. What's wrong?
  230. Replacment Run Capicator
  231. Help with a DC control for a DC Motor
  232. Hitachi VFD vs AC Tech VFD
  233. Static Phase Converter Problem with Willing Machine
  234. One VFD, two different HP motors
  235. vfd on milling machine
  236. Building another chassis dynamometer. Need absorber ideas.
  237. DC Motor Interference Problem
  238. Any 480V VFDs that can run on 240V?
  239. Best Motor for Belt Grinder: 1725 or 3450 RPM?
  240. FM50 on J head Bridgeport
  241. My new WNY RPC panel .
  242. Motor rotation
  243. RPCs vrs Static Converters
  244. Power Company meter question.
  245. converter output
  246. 3450 vs 1760 RPM for rotary phase converter
  247. 3 phases out of single phase.
  248. VFD Control Pot- Multiple Machines?
  249. Source for 208 / 240 volt 3 phase panel?
  250. Best Options: 3phase to 1phase