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View Full Version : Transformers, Phase Converters and VFD



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