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View Full Version : Transformers, Phase Converters and VFD



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  1. VFd ~ 2 pole or 4 pole on a 2 speed motor?
  2. How much are RPC's worth?
  3. using run caps for start caps
  4. RPC sub panel?
  5. Any Convention in Wire Color?
  6. Clearing Confusion Over 220/440 & 220/380 Delta Wye Motors
  7. Probably a redundant question or 2...
  8. Cheap Resistor for Braking?
  9. Enco 1525 mill 3 ph with American Rotary phase converter
  10. Teco JNEV Remote Keypad for VFD
  11. Troubleshooting a TB Woods VFD
  12. Balanced?
  13. Baldor Motor
  14. Selecting Transformer For RPC
  15. Cost of running RPC setup?
  16. 2hp RPC + 5hp 3phase idler =7hp RPC?
  17. vfd help
  18. Power Problems
  19. Do these amp readings sound right?
  20. Single Live RPC Design
  21. Hitachi SJ200-007NFU2 on SB Heavy 10
  22. How fast is too fast with a VFD?
  23. Slight OT, possible motor problem
  24. VFD Remote Control Setups
  25. Hitachi VFD With Blank Display
  26. RPC Problem
  27. Buying a used motor
  28. Voltage from Rotary Phase Converter
  29. TECO vfd question...
  30. Residential panel and breakers
  31. 1ph 240- 3ph 575
  32. correct 3 phase wiring
  33. 30 hp motor problem
  34. 4 speed motor help- wire ID?
  35. Wire gauges / amperage for rotary converters
  36. OT: step down transformer sizing
  37. Motor Whistles When Connected to VFD
  38. Line to Line voltage on a new RPC ? 6% ?
  39. Wiring diag. for a Doall Blade Welder?
  40. Control Transformer Needed Badly!!!!
  41. Bypass Drum Switch to Use VFD?
  42. Quieting a VFD driven motor?
  43. Spindle speed - how to accurately display
  44. Way Ot
  45. Motor Problem
  46. Need help wiring inherited Temco RPC
  47. rerversing a 1 ph motor
  48. Inverter Drive For Small Lathe
  49. Testing 3 phase Motor and Wiring
  50. 7.5 hp rpc
  51. Puzzling VFD/motor interaction
  52. Boston Gear Ratiotrol
  53. Need new lathe motor (?)
  54. Capacitance for solar system
  55. KO Lee cnc surface grinder eletrical diagram needed
  56. buck transformer
  57. 440v to 240v conversion ++
  58. VFD And AC Synchronous Motors: A question
  59. VFD and motor max hZ question/opinion
  60. How about rotary phase converters?
  61. Opinion on Static Phase Converters
  62. Junk yard 3 phase motor ??
  63. Running motor with 208 V on 240 V feed
  64. Starters and relays
  65. VMC battery charging
  66. Derating VFD
  67. two motors running one machine
  68. VFD on a rotary converter ?
  69. Best Place to buy a VFD
  70. ? Use undersized VFD to start rotary converter
  71. Maybe an Old Post..Need CNC phase converter
  72. Gathering Parts - Quick Question!
  73. 240-480 volts 3ph transformer with phase converter?
  74. 25hp rpc amp needs
  75. VFD Settings help needed
  76. Need Help wiring old lathe
  77. Removing a conduit box
  78. How do I find generated leg and control circuit?
  79. can I use this motor for an "add on" for my rpc
  80. Oversizing RPC
  81. Myford ML 10 + VFD ?
  82. Pony start + idler + transformer = ???
  83. Proper RPC Grounding
  84. Utility company transformer sizing
  85. Graziano SAG 12 Step up Transformer?
  86. I need a VFD Guru's advice
  87. Additive, Subtractive Xfrmr and angular displacement
  88. Question about placement of RPC
  89. Testing/Identifying Six-wire Two-speed Single-voltage Motors
  90. Most basic rpc for dummies (like me)
  91. VFD's and CNC's: A couple questions
  92. dual idler rpc question
  93. Better than half way there
  94. Wiring Weiler LZ 280 help
  95. RPC Help needed!
  96. 230/1 to 480/3 to power AB 1395 DC Drive
  97. braking circuit for a 220 motor
  98. New 3 phase service-What voltage?
  99. Need 3 phase power
  100. HP Limitations
  101. What is the function of this MG set?
  102. Mitsubishi vfd
  103. Manual needed for Volkmann AD-2 vfd
  104. 3 phase 2 Speed motor wiring help?
  105. Can I use a vfd as a phase converter for a cnc lathe
  106. Minimum hp on RPC
  107. Dumb questions on phase converters
  108. Rotary vs Static - Need Help with Project
  109. Newbie in need of help! Drum switch redo!
  110. remote start/stop wire size
  111. Wiring up 4 or 5 machines using a RPC?
  112. dead baldor inverter, need help please.
  113. VFD Information
  114. Leary about a static
  115. WNY Supply - Fed Up and Need Help
  116. RPC and Magnetic Brake Problem
  117. What VFD for 2.2kw Spindle 3ph
  118. Who makes dust proof VFDs?
  119. 240 3ph to 460 3ph?
  120. Need advice on Leeson VFD for Clausing 6913
  121. 3 welder on rotory converter???
  122. Rheostat question for 2hp DC motor
  123. Phase Perfect Questions
  124. OT: 3 phase motor???'s
  125. Need Help with VFD and Latching Start
  126. Can I get savings by changing motor?
  127. Best Deals on 460V VFD's and 2 Spd. Mtr/VFD?
  128. Newbe needs help.
  129. Toshiba VF-S9 VFD voltage change?
  130. new to me drive supplier
  131. VFD - torque loss at low rpms and is this possible?
  132. Shop made line reactor
  133. Build your own VFD
  134. Rewiring 3 Phase Motor
  135. Wiring 3ph VFD to 1ph supply?
  136. Any experience with Cutler Hammer AF93 VFD
  137. Wtb 25-30hp Rpc
  138. Need Help with F4 KEB
  139. Power a VFD from shared circuit?
  140. VFD. Buy it now or buy it later?
  141. 120/240 motor generators slightly off topic
  142. Cathode Protection half sell
  143. MANUAL NEEDED: Allen Bradley IP20 161S
  144. Will this European Motor Work in the U.S.?
  145. 3 phase plus neutral
  146. TECO AC drive questions or comments needed
  147. VFD and inverter drive motor?
  148. Dead Circuit in shop
  149. AB motor control
  150. Ratcheting Crimping Tool
  151. single vfd running two motors?
  152. Single phase motors May run off VFDs!
  153. Mfg Comments on Multi-motor VFD applications
  154. Integrating VFD with X Power Feed
  155. Tachometer Display for Mill
  156. Useful Motor and VFD tutorial
  157. 20 kw generator
  158. DrivesWarehouse.com
  159. VFD and Whitcomb Blaisdell
  160. Buying used run/start Caps
  161. Yaskawa servopack rotation change
  162. VFD Help... GE af300 mini
  163. Wiring Static Phase Converter to Drum Switch
  164. VFD on Surface Grinder (two motors on 1 VFD)?
  165. VFD's and braking
  166. 10hp RPC to start 10hp motor.
  167. My First 5hp Phase Converter
  168. Electrical Dumby In Need Of Help
  169. Phase Balance Questions?
  170. Surface grinder keeps tripping reset button
  171. VFD & Motor Starter
  172. -aluminum cooling fan for VFD applications
  173. encloser box
  174. what is special about a Phase a Matic idler?
  175. 200 V motors
  176. Need a copy of VFD's for dummies
  177. 3 wire to 4 wire conversions ?
  178. Lathe only pulling current on 2 legs?
  179. step down xfmr as step up- confusing results
  180. Options for Increasing HP of Rotary Phase Converter
  181. Options for Increasing HP of Rotary Phase Converter
  182. Clausing / Colchester Square Head Wiring Diagram?
  183. anyone familiar with AB 1336S VFDs
  184. program input parameter 1336S
  185. RPC installed and BROWNING OUT
  186. converter confusion
  187. The need of a earth ground ? on RPC.
  188. Motor/Generator jnstead of Phase Convertor
  189. Power Factor?
  190. RPC Benefits
  191. 1/4 HP Marathon motor help needed.
  192. RPC Wiring Help.
  193. Shop/machine voltage question
  194. Economical solution for variable speed control water pump
  195. WNY Control Panel
  196. Yard Sale Find
  197. constant torque
  198. Phase convertor for my cnc mill... I only have single phase
  199. 3 Phase converter?
  200. WNy Supply
  201. RPC Panel On The Way - Breaker Configuration?
  202. Single pole breaker on 220 bus?
  203. Ok, two (probably stupid) questions...
  204. non-inverter rated motors on a VFD
  205. Direct Drives and Controls PRAISE
  206. Phase Converter to Transformer
  207. Cincinnati #2 440 - 220v tilt-head
  208. Wiring Question - CH 3 pole twin break starter
  209. starting problem
  210. Effects of lag/spike on the generated leg when using a transformer
  211. VFD voltage spike
  212. Electrical ? for OLD Norton Grinder 440v motor
  213. RPC idler-how hot should it run?
  214. TECO VFD N3 with 1 HP Bridgeport Step Pulley
  215. Allen Bradley Starter
  216. vfd and hydraulic pump update
  217. ot whats the best way to find crack in shaft
  218. Low Voltage Control for starters - isn't 120V low enough?
  219. rpc and motor reversing
  220. Welder Transformer Probs.
  221. How Much In-Rush Current on 7.5 HP RPC Startup?
  222. Alternatives to a NEMA enclosure
  223. Generator/RPC/Lathe issue!
  224. Rewire the mill or the shop?
  225. 3 phase off/on switch
  226. Too many start capacitors
  227. Place to buy VFD in California
  228. 25 hp rotary phase converter plan wanted
  229. Mill up and Running with FM50
  230. question for electron goo roos
  231. Motor gearing momentum and torque
  232. Inverter Drive Motot
  233. Can big 3ph DC drives run on single phase
  234. Flux Current Control? Wht is it?
  235. OT: Running power line under existing driveway
  236. wye-wye transormer
  237. hydraulic pump with vfd
  238. German tool grinding motor needing help
  239. Help me choose a voltage
  240. Anyone familiar with TECO N3 drive?
  241. Idler in addition to Arco RPC
  242. Rotary or VFD to feed a transformer?
  243. TECO FM50 Remote Connection
  244. Single phase 60hz to single phase variable speed
  245. using two different phase converters
  246. Need a 3 phase switch
  247. Simple circuit design?
  248. Info wanted: Allspeed VT130G (badged Toshiba?)
  249. COM1 access to your drive?
  250. Star/delta motor and VFD wiring situation - looking for some opinions