WorldWide Drilling Resource

62 JULY 2015 WorldWide Drilling Resource ® Wouldn’t Go Over 2100 Part 2 by Bill Corey Pentair Water Training Institute ...I said I didn’t believe him and asked the installer if he had a voltage meter. He did. So he jumped down in the pit and held the meter where we could see it, and touched L1 and L2 on the discon- nect to reveal 204 volts. Okay, then we knew the voltage was not correct, but it should not have caused the drive to not go over 2100 rpm. I asked the installer if the electri- cian who installed it was there. He said he was in one of the buildings and called him to come over. While we were waiting, the owner of the mall drove over and let us know he was not happy. He told us he had grass, flowers, and shrubs to water. When the electrician got there, I asked him to tell me about his hookup. He said they wanted to hook the drive up to 230-volt single-phase. I’m going to stop here for a second to explain that when you hook a three- phase drive up to single-phase power, you must double the output amps of the motor to select the correct drive. They were using a motor that had 26.0 SFA (Service Factory Amps), they picked a drive that would support it which is a 59.4 amp drive, so everything should have worked. Back to the story: The electrician said he hooked it up to a 30-amp break- er. I asked why, to which he replied, “You only have a 26-amp motor.” At that point I said, “But you have a 60-amp drive!” Needless to say, the wheels start- ed to turn and he realized he made a mistake. I then asked if he could put a 60-amp breaker on it. He said no, the wire size in the conduit was too small to support 60 amps and the conduit was too small to put larger wire in. Then he surprised me and said he would rather put in three-phase, to which I said, “YOU HAVE THREE-PHASE?” He said he did. He was a little sur- prised, but said he would put in three- phase. The moral of this story: I didn’t say anything to them because I didn’t want anyone to get fired, but the cost of a 60-amp drive is about $3000 more than the 30-amp drive, which is really all they needed, if they would have just sized things to three-phase. So if you have three-phase, use it. Bill michele@ worldwidedrillingresource.com de cada pozo a producir de 5 a 10 mega- vatios de energía. Este proyecto ha dado el permiso para construir una planta geotérmi- ca de 50 megavatios que se espera entre en pleno funcionamiento en el 2018. También programado a estar en operación en el 2018, es el proyecto de 70 megavatios Curacautín. Hasta el momento, cuenta con dos pozos de pro- ducción perforados a más de 8.200 pies con fuentes geotérmicas de 550ºF (300ºC) y cuatro pozos delgado perfora- do a unos 3.600 pies con temperaturas de alrededor de 570ºF (300ºC). La compañía cree que cada pozo es capaz de producir de 3 a 12 megavatios de energía. Con más de 85 concesiones de explo- ración y explotación de energía geotérmi- ca, el país está en camino a lograr su objetivo de producir 150 megavatios de energía geotérmica para el 2020. On the Horizon trans. cont’d frompage 31. 2016 McEllhiney Lecturer Announced Adapted from Information from the National Ground Water Association Educational Foundation The Na t i ona l Gr ound Wa t e r Association Educational Foundation has named Peter S. Cartwright, PE, as the 2016 McEl lhiney Distinguished Lecturer. His presentation, Water Well Contaminants and Treatment Options , wi l l focus on treatment options for groundwater. Cartwright has been in the water treatment industry since 1974. In 1980, he formed his own consul t- ing and engi- neering firm, C a r t w r i g h t C o n s u l t i n g C o m p a n y , which provides des ign, con- s t r u c t i o n , installation, and operation services for water purification, wastewater treatment, as well as water recovery, reclamation, and reuse. The lecture will enforce the idea that no two water supplies are identical, so ensuring a safe, good tasting, potable water supply requires a treatment approach which considers the various fluctuations which affect water quality. He will address some of the chal- lenges groundwater professionals face such as nitrite/nitrate, arsenic, and path- ogenic microorganisms, as well as water pH, total dissolved solids, iron, hard- ness, and other constituents, all of which may affect the taste or other properties of water. His presentation will identify classes of treatment technologies and address installation requirements and opera- tion, as well as maintenance of treatment systems. One of the unique features of this lecture is it will be tailored to the con- taminants the audience encounters most frequently, or the treatment technologies in which the audience is most interested, making this lecture one you don’t want to miss! The McEllhiney Lecture is available to organized groups of water well con- tractors for meetings or conventions at no cost.