Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Lc85

  1. Lc85

    Hi I have a question about accele

    Thanks groovy guy I believe since this is a temp solution. We can just transmit the two trip points. Either of these set points ie the horz or vert could trigger the relays. Have you had experience in receiving/processing units that could trigger the relays ? Do bently Nevada provide such a...
  2. Lc85

    Hi I have a question about accele

    Thanks Skogsgurra, This is for a temporary solution while the overall solution is being installed. I believe the furthest distance will be around 1km. Thanks
  3. Lc85

    Hi I have a question about accele

    Hi I have a question about accelerometers. Does anyone know of a company/supplier in the U.K. that supplies 3 axis accelerometers that are wireless? Or even a bespoke unit that operates on radio telemetry? Also a control unit is required which would be required to operate 2 trip signals when a...
  4. Lc85

    RTD's intrinsically safe

    Can RTDs be used as intrinsically safe items without the need for a barrier? We have an RTD in an EExd enclosure and we wish to reuse the rtd with a tank gauge. My question is would the tank gauge need to have barriers fitted to allow the circuit to be intrinsically safe? Thanks
  5. Lc85

    Exd [ ia ]

    We have a transmitter(slg 720) installed in a zone 1. it has a hazardous area rating of Exd[ia] it also has a 4-20ma output. We want to change this signal into enraf bpm so we are installing a converter in a switchroom which is a safe area,this is also rated Exd [ia].my question is does the...
  6. Lc85

    Vsd restart after shutdown

    We have a vsd, When the ESD is activated and reset the drive starts back up again automatically Also the drive starts back up automatically it the stop signal is removed. It was assumed that the drive was looking for a rising pulse and would not start up again until it saw this but this is not...
  7. Lc85

    bgu design

    IRstuff, The BGU's are wired in parallel. My question was just about the wiring between two break glass units as I am not sure that the BGU's will have enough terminals. Thanks
  8. Lc85

    bgu design

    Now attached, sorry.http://files.engineering.com/getfile.aspx?folder=3a6a3cfa-9c6a-4300-b5f5-67c48312f879&file=CCF01052015.pdf
  9. Lc85

    bgu design

    I have the attached design for BGU's (all in parallel) but I cant work out how to practically wire a 4 core cable between the two BGU's. Can anyone offer some guidance please. Thanks
  10. Lc85

    Distribution board cable.

    As panel 2 cubicle 1 split into 3 single phase loads, am I being daft in assuming we can reuse one of these to feed a three phase board? We have panel 5 cubicle 1 in the switchboard which is free. 160A/160A. So for rough pricing purposes we could use this to feed our new 3 phase board in the...
  11. Lc85

    Distribution board cable.

    Got a hold of the sld for this board. Currently the existing board is single phase and is fed from panel 2 cubicle 1 of a 3phase switchboard. This cubicle also feeds another single phase board and has a spare way. If we were to replace the distribution board in the field with a 3phase board...
  12. Lc85

    Distribution board cable.

    Scotty, Thanks for they reply. Do you know of any examples I could have a look at? The only load we have details of would be the led fittings.
  13. Lc85

    Distribution board cable.

    We are replacing a single phase lighting DB with a 3 phase DB. We are also replacing the cable that goes from the substation to the DB. This new DB will be used for lighting circuits( we will change existing for LEDs) and we will leave spare ways. My question is how do we size this new cable...
  14. Lc85

    Lighting design

    We have existing lighting columns approx. 6m high that have 3 fittings on them. If we are replacing the column and the fittings with 2 fittings would it be sensible to run a 3 core cable to a jb at the bottom of the column and then run a 3 core from the jb to each of the fittings? Thanks
  15. Lc85

    Wiring of a vsd

    Thanks for the replies. I don't think I was being very clear. When we turn the switch to hand. Do we wire the start push button in series with the hand contact? Thanks

Part and Inventory Search