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View Full Version : Transformers, Phase Converters and VFD



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  1. vfd overload problem
  2. Trip relay tripping
  3. motor voltage ?
  4. VFD what do I need?
  5. AC motor problem
  6. Nimhcells for rebuilding cordless power tools
  7. Three phase step up transformer 480V
  8. Fuji Inverter FVRO15G7S
  9. Motor input volt
  10. Need help with a Ronk Phase converter
  11. How hot can a motor run safely
  12. Steelman H-A-S Phase Converter 20Hp- whats the largest motor it can run?
  13. a LITTLE HELP ON TIME VS CURRENT GRAPH FOR BREAKERS
  14. Another RPC question
  15. 20 HP motor too big?
  16. VFD to Yaskawa 3/phase servo drive?
  17. Universal Voltage 3-phase motor?
  18. Phase Converter Bogging Down when starting 2 speed motor in high speed
  19. Phazpak in place of start caps
  20. RPC generated leg problem
  21. instant reversing with a VFD ?
  22. Powering 12VDC winch on shop electrics
  23. Voltage limits for Mitsubishi/Daewoo CNC control
  24. 460 volt to 230 volt
  25. Choosing VFD
  26. wild leg not so wild
  27. VFd ~ 2 pole or 4 pole on a 2 speed motor?
  28. How much are RPC's worth?
  29. using run caps for start caps
  30. RPC sub panel?
  31. Any Convention in Wire Color?
  32. Clearing Confusion Over 220/440 & 220/380 Delta Wye Motors
  33. Probably a redundant question or 2...
  34. Cheap Resistor for Braking?
  35. Enco 1525 mill 3 ph with American Rotary phase converter
  36. Teco JNEV Remote Keypad for VFD
  37. Troubleshooting a TB Woods VFD
  38. Balanced?
  39. Baldor Motor
  40. Selecting Transformer For RPC
  41. Cost of running RPC setup?
  42. 2hp RPC + 5hp 3phase idler =7hp RPC?
  43. vfd help
  44. Power Problems
  45. Do these amp readings sound right?
  46. Single Live RPC Design
  47. Hitachi SJ200-007NFU2 on SB Heavy 10
  48. How fast is too fast with a VFD?
  49. Slight OT, possible motor problem
  50. VFD Remote Control Setups
  51. Hitachi VFD With Blank Display
  52. RPC Problem
  53. Buying a used motor
  54. Voltage from Rotary Phase Converter
  55. TECO vfd question...
  56. Residential panel and breakers
  57. 1ph 240- 3ph 575
  58. correct 3 phase wiring
  59. 30 hp motor problem
  60. 4 speed motor help- wire ID?
  61. Wire gauges / amperage for rotary converters
  62. OT: step down transformer sizing
  63. Motor Whistles When Connected to VFD
  64. Line to Line voltage on a new RPC ? 6% ?
  65. Wiring diag. for a Doall Blade Welder?
  66. Control Transformer Needed Badly!!!!
  67. Bypass Drum Switch to Use VFD?
  68. Quieting a VFD driven motor?
  69. Spindle speed - how to accurately display
  70. Way Ot
  71. Motor Problem
  72. Need help wiring inherited Temco RPC
  73. rerversing a 1 ph motor
  74. Inverter Drive For Small Lathe
  75. Testing 3 phase Motor and Wiring
  76. 7.5 hp rpc
  77. Puzzling VFD/motor interaction
  78. Boston Gear Ratiotrol
  79. Need new lathe motor (?)
  80. Capacitance for solar system
  81. KO Lee cnc surface grinder eletrical diagram needed
  82. buck transformer
  83. 440v to 240v conversion ++
  84. VFD And AC Synchronous Motors: A question
  85. VFD and motor max hZ question/opinion
  86. How about rotary phase converters?
  87. Opinion on Static Phase Converters
  88. Junk yard 3 phase motor ??
  89. Running motor with 208 V on 240 V feed
  90. Starters and relays
  91. VMC battery charging
  92. Derating VFD
  93. two motors running one machine
  94. VFD on a rotary converter ?
  95. Best Place to buy a VFD
  96. ? Use undersized VFD to start rotary converter
  97. Maybe an Old Post..Need CNC phase converter
  98. Gathering Parts - Quick Question!
  99. 240-480 volts 3ph transformer with phase converter?
  100. 25hp rpc amp needs
  101. VFD Settings help needed
  102. Need Help wiring old lathe
  103. Removing a conduit box
  104. How do I find generated leg and control circuit?
  105. can I use this motor for an "add on" for my rpc
  106. Oversizing RPC
  107. Myford ML 10 + VFD ?
  108. Pony start + idler + transformer = ???
  109. Proper RPC Grounding
  110. Utility company transformer sizing
  111. Graziano SAG 12 Step up Transformer?
  112. I need a VFD Guru's advice
  113. Additive, Subtractive Xfrmr and angular displacement
  114. Question about placement of RPC
  115. Testing/Identifying Six-wire Two-speed Single-voltage Motors
  116. Most basic rpc for dummies (like me)
  117. VFD's and CNC's: A couple questions
  118. dual idler rpc question
  119. Better than half way there
  120. Wiring Weiler LZ 280 help
  121. RPC Help needed!
  122. 230/1 to 480/3 to power AB 1395 DC Drive
  123. braking circuit for a 220 motor
  124. New 3 phase service-What voltage?
  125. Need 3 phase power
  126. HP Limitations
  127. What is the function of this MG set?
  128. Mitsubishi vfd
  129. Manual needed for Volkmann AD-2 vfd
  130. 3 phase 2 Speed motor wiring help?
  131. Can I use a vfd as a phase converter for a cnc lathe
  132. Minimum hp on RPC
  133. Dumb questions on phase converters
  134. Rotary vs Static - Need Help with Project
  135. Newbie in need of help! Drum switch redo!
  136. remote start/stop wire size
  137. Wiring up 4 or 5 machines using a RPC?
  138. dead baldor inverter, need help please.
  139. VFD Information
  140. Leary about a static
  141. WNY Supply - Fed Up and Need Help
  142. RPC and Magnetic Brake Problem
  143. What VFD for 2.2kw Spindle 3ph
  144. Who makes dust proof VFDs?
  145. 240 3ph to 460 3ph?
  146. Need advice on Leeson VFD for Clausing 6913
  147. 3 welder on rotory converter???
  148. Rheostat question for 2hp DC motor
  149. Phase Perfect Questions
  150. OT: 3 phase motor???'s
  151. Need Help with VFD and Latching Start
  152. Can I get savings by changing motor?
  153. Best Deals on 460V VFD's and 2 Spd. Mtr/VFD?
  154. Newbe needs help.
  155. Toshiba VF-S9 VFD voltage change?
  156. new to me drive supplier
  157. VFD - torque loss at low rpms and is this possible?
  158. Shop made line reactor
  159. Build your own VFD
  160. Rewiring 3 Phase Motor
  161. Wiring 3ph VFD to 1ph supply?
  162. Any experience with Cutler Hammer AF93 VFD
  163. Wtb 25-30hp Rpc
  164. Need Help with F4 KEB
  165. Power a VFD from shared circuit?
  166. VFD. Buy it now or buy it later?
  167. 120/240 motor generators slightly off topic
  168. Cathode Protection half sell
  169. MANUAL NEEDED: Allen Bradley IP20 161S
  170. Will this European Motor Work in the U.S.?
  171. 3 phase plus neutral
  172. TECO AC drive questions or comments needed
  173. VFD and inverter drive motor?
  174. Dead Circuit in shop
  175. AB motor control
  176. Ratcheting Crimping Tool
  177. single vfd running two motors?
  178. Single phase motors May run off VFDs!
  179. Mfg Comments on Multi-motor VFD applications
  180. Integrating VFD with X Power Feed
  181. Tachometer Display for Mill
  182. Useful Motor and VFD tutorial
  183. 20 kw generator
  184. DrivesWarehouse.com
  185. VFD and Whitcomb Blaisdell
  186. Buying used run/start Caps
  187. Yaskawa servopack rotation change
  188. VFD Help... GE af300 mini
  189. Wiring Static Phase Converter to Drum Switch
  190. VFD on Surface Grinder (two motors on 1 VFD)?
  191. VFD's and braking
  192. 10hp RPC to start 10hp motor.
  193. My First 5hp Phase Converter
  194. Electrical Dumby In Need Of Help
  195. Phase Balance Questions?
  196. Surface grinder keeps tripping reset button
  197. VFD & Motor Starter
  198. -aluminum cooling fan for VFD applications
  199. encloser box
  200. what is special about a Phase a Matic idler?
  201. 200 V motors
  202. Need a copy of VFD's for dummies
  203. 3 wire to 4 wire conversions ?
  204. Lathe only pulling current on 2 legs?
  205. step down xfmr as step up- confusing results
  206. Options for Increasing HP of Rotary Phase Converter
  207. Options for Increasing HP of Rotary Phase Converter
  208. Clausing / Colchester Square Head Wiring Diagram?
  209. anyone familiar with AB 1336S VFDs
  210. program input parameter 1336S
  211. RPC installed and BROWNING OUT
  212. converter confusion
  213. The need of a earth ground ? on RPC.
  214. Motor/Generator jnstead of Phase Convertor
  215. Power Factor?
  216. RPC Benefits
  217. 1/4 HP Marathon motor help needed.
  218. RPC Wiring Help.
  219. Shop/machine voltage question
  220. Economical solution for variable speed control water pump
  221. WNY Control Panel
  222. Yard Sale Find
  223. constant torque
  224. Phase convertor for my cnc mill... I only have single phase
  225. 3 Phase converter?
  226. WNy Supply
  227. RPC Panel On The Way - Breaker Configuration?
  228. Single pole breaker on 220 bus?
  229. Ok, two (probably stupid) questions...
  230. non-inverter rated motors on a VFD
  231. Direct Drives and Controls PRAISE
  232. Phase Converter to Transformer
  233. Cincinnati #2 440 - 220v tilt-head
  234. Wiring Question - CH 3 pole twin break starter
  235. starting problem
  236. Effects of lag/spike on the generated leg when using a transformer
  237. VFD voltage spike
  238. Electrical ? for OLD Norton Grinder 440v motor
  239. RPC idler-how hot should it run?
  240. TECO VFD N3 with 1 HP Bridgeport Step Pulley
  241. Allen Bradley Starter
  242. vfd and hydraulic pump update
  243. ot whats the best way to find crack in shaft
  244. Low Voltage Control for starters - isn't 120V low enough?
  245. rpc and motor reversing
  246. Welder Transformer Probs.
  247. How Much In-Rush Current on 7.5 HP RPC Startup?
  248. Alternatives to a NEMA enclosure
  249. Generator/RPC/Lathe issue!
  250. Rewire the mill or the shop?