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View Full Version : Transformers, Phase Converters and VFD



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  1. Rpm's for an RPC
  2. 10hp RPC Build
  3. Pushing it too far or ok to try?
  4. RPC 240 in to 415 out ?
  5. Wiring Problem,using solid wire?
  6. Can I use a 3 phase breaker panel instead of a fused disconnect at each machine?
  7. Rotery Phase convertor
  8. Can one use WD40 to clean idler motor
  9. VFD & belt setup
  10. Commonly used fuse types for RPCs
  11. Large 3PH Power Source
  12. Overload protection on a Rotary Phase Converter?
  13. 1140 vs 1725 vs 3450 RPM motor for air compressor
  14. wiring for my surface grinder motor
  15. Inexpensive pressure sensors
  16. need diagram for rpc 8 pin socket relay
  17. VFD on Logan DC chucker
  18. Which brand of static phase converter
  19. deleted
  20. Another what size motor question?
  21. Give generator a boost.
  22. found an idler motor
  23. RPC first step
  24. Control panels
  25. Powerflex 4 noob question
  26. TOSVERT-130 Inverter
  27. Baldor Series 15H Inverter Control acting dead?
  28. large pony start RPC
  29. Did I mess up buying this?
  30. Changing 3 phase servo drive to single phase?
  31. Running 480 from RFC
  32. motor voltage question
  33. Three Phase Breaker as Single Phase Protection?
  34. Need help hooking up Polyphase motor
  35. Trying to run 480 volt milling machine
  36. Just got a call about power factor device?
  37. 100amp Main breaker warm to the touch
  38. Effects of undersize heaters?
  39. Specs for a transformer?
  40. Pulling 120V off a rotary?
  41. Running a AC contactor on DC?
  42. RPC motor size info sought
  43. 480 3 phase to 220 3 phase.
  44. rpc wiring
  45. rpc output
  46. Question on VFD installation
  47. What gauge wire should I run to/from RPC?
  48. VFD lifespan?
  49. Can I run a CNC Mill on an RPC?
  50. Power up on a long dormant servo drive advice
  51. VFD switch box
  52. Enclosure
  53. Idle 15kV transformer uses how much power?
  54. Newall Constant Surface Speed DRO
  55. Is this the right heater?
  56. VFD selection
  57. Specialty toggle switch source wanted...
  58. wiring diagram for bridgeport 1hp motor
  59. Walker Turner gets a VFD
  60. A real wind generator. Country situation. Need power!
  61. More RPC questions
  62. Start to run.... idler sometimes changes direction
  63. A little help with 440v on a DoAll T&CGrinder
  64. Why not 2 motors with 1 VFD
  65. Lights shimmer while phase converter unloaded
  66. Digital Phase Converter
  67. VFD rated more than motor ?
  68. Run two motors off a single static converter??
  69. VFD with DRO
  70. Simple RPC motor control start stop switch logic
  71. First Post need RPC help
  72. VFD review
  73. Questions on my RPC
  74. RPC question
  75. Will this work as a transformer
  76. y vs delta in the wiring
  77. New guy - lots of questions !
  78. Box for VFD in home shop
  79. How to bump up the two low legs on a rotary phase converter?
  80. 3 wire control for Fuji VFD question
  81. What Size RPC do I Need?
  82. Drum switch troubles
  83. 3 ph motor sizing
  84. 3 phase motor problems
  85. need a big electrolytic capacitor - got one?
  86. static?
  87. Need three phase 440 from single phase 220
  88. wiring question with three phase
  89. VFD and Tree Vert Mill
  90. Wiring the shop for 3-phase power from Phase Perfect
  91. newb a$$-n-9 question
  92. new to RPC's need help
  93. Quick VFD question
  94. Possible load of idler motors available
  95. maytag neptune
  96. How do you hook up 2 RPC's together?
  97. start with VFD/run on 1-phase
  98. Looking for a transformer near Seattle
  99. vfd overload problem
  100. Trip relay tripping
  101. motor voltage ?
  102. VFD what do I need?
  103. AC motor problem
  104. Nimhcells for rebuilding cordless power tools
  105. Three phase step up transformer 480V
  106. Fuji Inverter FVRO15G7S
  107. Motor input volt
  108. Need help with a Ronk Phase converter
  109. How hot can a motor run safely
  110. Steelman H-A-S Phase Converter 20Hp- whats the largest motor it can run?
  111. a LITTLE HELP ON TIME VS CURRENT GRAPH FOR BREAKERS
  112. Another RPC question
  113. 20 HP motor too big?
  114. VFD to Yaskawa 3/phase servo drive?
  115. Universal Voltage 3-phase motor?
  116. Phase Converter Bogging Down when starting 2 speed motor in high speed
  117. Phazpak in place of start caps
  118. RPC generated leg problem
  119. instant reversing with a VFD ?
  120. Powering 12VDC winch on shop electrics
  121. Voltage limits for Mitsubishi/Daewoo CNC control
  122. 460 volt to 230 volt
  123. Choosing VFD
  124. wild leg not so wild
  125. VFd ~ 2 pole or 4 pole on a 2 speed motor?
  126. How much are RPC's worth?
  127. using run caps for start caps
  128. RPC sub panel?
  129. Any Convention in Wire Color?
  130. Clearing Confusion Over 220/440 & 220/380 Delta Wye Motors
  131. Probably a redundant question or 2...
  132. Cheap Resistor for Braking?
  133. Enco 1525 mill 3 ph with American Rotary phase converter
  134. Teco JNEV Remote Keypad for VFD
  135. Troubleshooting a TB Woods VFD
  136. Balanced?
  137. Baldor Motor
  138. Selecting Transformer For RPC
  139. Cost of running RPC setup?
  140. 2hp RPC + 5hp 3phase idler =7hp RPC?
  141. vfd help
  142. Power Problems
  143. Do these amp readings sound right?
  144. Single Live RPC Design
  145. Hitachi SJ200-007NFU2 on SB Heavy 10
  146. How fast is too fast with a VFD?
  147. Slight OT, possible motor problem
  148. VFD Remote Control Setups
  149. Hitachi VFD With Blank Display
  150. RPC Problem
  151. Buying a used motor
  152. Voltage from Rotary Phase Converter
  153. TECO vfd question...
  154. Residential panel and breakers
  155. 1ph 240- 3ph 575
  156. correct 3 phase wiring
  157. 30 hp motor problem
  158. 4 speed motor help- wire ID?
  159. Wire gauges / amperage for rotary converters
  160. OT: step down transformer sizing
  161. Motor Whistles When Connected to VFD
  162. Line to Line voltage on a new RPC ? 6% ?
  163. Wiring diag. for a Doall Blade Welder?
  164. Control Transformer Needed Badly!!!!
  165. Bypass Drum Switch to Use VFD?
  166. Quieting a VFD driven motor?
  167. Spindle speed - how to accurately display
  168. Way Ot
  169. Motor Problem
  170. Need help wiring inherited Temco RPC
  171. rerversing a 1 ph motor
  172. Inverter Drive For Small Lathe
  173. Testing 3 phase Motor and Wiring
  174. 7.5 hp rpc
  175. Puzzling VFD/motor interaction
  176. Boston Gear Ratiotrol
  177. Need new lathe motor (?)
  178. Capacitance for solar system
  179. KO Lee cnc surface grinder eletrical diagram needed
  180. buck transformer
  181. 440v to 240v conversion ++
  182. VFD And AC Synchronous Motors: A question
  183. VFD and motor max hZ question/opinion
  184. How about rotary phase converters?
  185. Opinion on Static Phase Converters
  186. Junk yard 3 phase motor ??
  187. Running motor with 208 V on 240 V feed
  188. Starters and relays
  189. VMC battery charging
  190. Derating VFD
  191. two motors running one machine
  192. VFD on a rotary converter ?
  193. Best Place to buy a VFD
  194. ? Use undersized VFD to start rotary converter
  195. Maybe an Old Post..Need CNC phase converter
  196. Gathering Parts - Quick Question!
  197. 240-480 volts 3ph transformer with phase converter?
  198. 25hp rpc amp needs
  199. VFD Settings help needed
  200. Need Help wiring old lathe
  201. Removing a conduit box
  202. How do I find generated leg and control circuit?
  203. can I use this motor for an "add on" for my rpc
  204. Oversizing RPC
  205. Myford ML 10 + VFD ?
  206. Pony start + idler + transformer = ???
  207. Proper RPC Grounding
  208. Utility company transformer sizing
  209. Graziano SAG 12 Step up Transformer?
  210. I need a VFD Guru's advice
  211. Additive, Subtractive Xfrmr and angular displacement
  212. Question about placement of RPC
  213. Testing/Identifying Six-wire Two-speed Single-voltage Motors
  214. Most basic rpc for dummies (like me)
  215. VFD's and CNC's: A couple questions
  216. dual idler rpc question
  217. Better than half way there
  218. Wiring Weiler LZ 280 help
  219. RPC Help needed!
  220. 230/1 to 480/3 to power AB 1395 DC Drive
  221. braking circuit for a 220 motor
  222. New 3 phase service-What voltage?
  223. Need 3 phase power
  224. HP Limitations
  225. What is the function of this MG set?
  226. Mitsubishi vfd
  227. Manual needed for Volkmann AD-2 vfd
  228. 3 phase 2 Speed motor wiring help?
  229. Can I use a vfd as a phase converter for a cnc lathe
  230. Minimum hp on RPC
  231. Dumb questions on phase converters
  232. Rotary vs Static - Need Help with Project
  233. Newbie in need of help! Drum switch redo!
  234. remote start/stop wire size
  235. Wiring up 4 or 5 machines using a RPC?
  236. dead baldor inverter, need help please.
  237. VFD Information
  238. Leary about a static
  239. WNY Supply - Fed Up and Need Help
  240. RPC and Magnetic Brake Problem
  241. What VFD for 2.2kw Spindle 3ph
  242. Who makes dust proof VFDs?
  243. 240 3ph to 460 3ph?
  244. Need advice on Leeson VFD for Clausing 6913
  245. 3 welder on rotory converter???
  246. Rheostat question for 2hp DC motor
  247. Phase Perfect Questions
  248. OT: 3 phase motor???'s
  249. Need Help with VFD and Latching Start
  250. Can I get savings by changing motor?