Do UK regulations state I need to place a contactor before a variable frequence (speed) drive?
819127
In the UK you need an isolator, not a contactor. It should be lockable. The point is that you can isolate the VF drive from its supply if you needed to open it up or work on it.
626158
It shouldn't.  Drives are designed to run for several hours.  Now if it were days straight then I'd worry, but an hour?  It'll be fine.
1071068
depends where you live, in the uk 70mph
957231
I dint know about British standards but and American standard "B7" hardness should handle that stress (probable with a lot of over-kill)
606215
http://ec.europa.eu/enterprise/automotive/pagesbackground/administering_authorities.htm
678885
ALL STATES IN THE US ARE GOVERNED BY THE NATIONAL ELECTRIC CODE (NEC) AS TO YOUR QUESTION PLEASE PROVIDE MORE DETAILS IM AN ELECTRICIAN AND WOULD LIKE TO HELP
739384
Must have an LTO Drive first.
534193
You should have some HT/LT experience... And then contact with the local liasining authority...
657436
I assume the pump performance curve is unavailable, pity. You know what the current rpms, pressure and power is. I would apply the pump affinity laws in order to determine what the increase in rpm(flow) and power it will take to make the pressure you require. It may be  easier getting a bigger motor for the existing pump, than going through the time and effort of a single new pump, pumps in series, piping reconfiguration etc, all of which will work.
628726
Yes it is - (in the UK that is - hope you are in the UK?).  You can request proof that appropriate signs were in place as stipulated in the Road Traffic Act.  You may find that sending this letter may get on their wick to the point that they will drop the speeding claim - obviously they have to have photographic evidence of the offence also!  As per the RTA they also have to provide the items requested in the letter.  I managed to get off a speeding fine with it.  \n\n\nIn order that I may honestly complete the required information requested on the reverse of the form, I require the photographic evidence of the alleged offence in order that I may ascertain who was driving.\n\nI will also require:-\n\n•The name of the manufacturer, including make and model and serial number of the radar or laser gun used.\n\n•Copies of the manufacturers recommended maintenance schedule for the above device.\n\n•Copies of the manufacturer’s literature as it relates to the correct use, including but not limited to, mounting, aiming, weather and traffic limitations for the device used.\n\n•A copy of the past six months maintenance records, including but not limited to calibration specifications.\n\n•Photographic evidence that the legally required notifications of speed camera use were displayed at the site being used for speeding offence detection, or a copy of the relevant legislation that states that this in not necessary.\nPlease note that attempted delivery to the address listed on your letter, as detailed above, will be considered as valid service of this document.\n\nI look forward to your prompt response.\n\n\nGood luck with it!!  I don't know about anyone else - but I have no problem with fixed speed cameras - just the nasty sneaky mobile ones - normally hidden away in an area that has no risk to pedestrians, but significant possibility for speeding without endangerment to any other road users.  GRRR nasty money making machines!!
173271
In the motor and VFD variable frequency drive industry, the standard speak is Amps, which is replacing HP old school.\n\nYou must realize that in an industry in which the typical 3phase power is based on 480VAC.\n\nThis means when someone is sizing a motor for a specific application they speak of the Amps need to perform the task.\n\nThe drives (VFD) which I work on are typically between 10amp up to 3000amp. Usually, 480Vac, sometimes 600Vac or 690Vac.\nA drive which is rated at 690Vac, 705amp is 600Vac, 800amp for the same drive.\n\nYou need to know both, HP and Amp for the machines which you are interested in. That means what is the typical voltage for the area. USA vs Canada vs UK vs Asia They are all different. \n\nKeep in mind Amps are Amps regardless where you are. Heavy wire sizing is crucial.
394957
Provision and Use of Work Equipment Regulations 1998 (UK)
846595
http://www.businesslink.gov.uk/bdotg/action/layer?topicId=1074410825
966091
probably the fact that it is made for the usa market and the power rateing is 0nly 120volt not 240 like ours,so if u get it and plug into the mains u will burn it out so u have wasted ur money,try european markets but stress u need for uk
731398
Slip Rings are most commonly used.  If the power level is low you might be able to magnetically couple the power through the shaft using a pair of concentric coils.
699848
www.dvla.gov.uk \nWe imported a car from Japan you have to fit a rear fog light and chage the brake pads normally then pay for an sva test once it passes this you can register and use the car in uk
857028
try this http://www.autolib.co.uk/