Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng 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 MAZ13

  1. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Why do you think VL2E=VL2N and VL3E=VL3N ? VN is not 0! As you mentioned, we have: VN=8.871
  2. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Dear 7anoter4 you made it well. Thank you. Now the question is about "VL1E" , "VL2E" and "VL3E" in your 3phase load. Could you indicate it on the diagram? By me, "V1LE" , "V2LE" and "V3LE" are far away from my expectations and it made me to raise this thread.
  3. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Hi all, sorry for late answer. I'm surprised what special data are you looking for? The short circuit capacity of "External Network" , as an input data for example, has no role on voltage drop calculation! Main busbar should be considered as "PV" and External network produces as much power as...
  4. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Could anyone simulate this example in any other software and share the results? So we may compare the results and get to a conclusion.
  5. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Dear 7anoter4 What are you talking about? The network is as simple as is indicated. There is no transformeres and for voltage drop calculations you don't need to know what equipment is on upstream! Voltage on main busbar is 400V-3ph-N. Left side is a single phase load (L1-N) which is supplied...
  6. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Dear Waross This is the case with unity power factor. There is not too much differenece:
  7. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Hi all, Please see attached pic. I have simulated 2 cases: on the left side is a single phase load 15,7A, supplied from phase L1. On the right side is a 3phase unbalanced load, which all load (15,7A) is on phase L1. Supply cable cross section is same 2.5mm2 in both cases. I expect no...
  8. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Hi all, thank you for your answers. I think you got my question but your replies do not answer my question. First to make assumptions more clear: neutral point at load is not earthed. It is abviously clear that by an earthed neutral on load star point we would have a voltage drop on phase A...
  9. MAZ13

    Line-Earth Voltage in 3Phase unbalance loads

    Hi all, If we have a 3phase unbalance load (400V L-L, 230V L-N nominal voltages), which all loads are on 1phase and the other phases are unloaded, is it expected that L-E voltage in unloaded phases changes? (anything rather than 230V?) I know that by unbalance loading, neutral point displaces...
  10. MAZ13

    Power quality analysers

    Hi, Dear emmjea001, I have worked with HIOKI power quality analyzers. It has 2 most famous models: HIOKI 3196 and HIOKI 3198.. I'm very satisfy with these equipment and if you specify your application, I'll tell you more about these. First of all, you should make it clear that you are looking...
  11. MAZ13

    earth wire in multicore control cable

    Dears, some type of multicore control cables are available in the market, which provide an additional ground wire. It means a 5x2.5mm2 cable consists of 5 of 2.5mm2 wire and a ground wire (typically in green and yellow colour). I would like to know what is the application of this type of cable...
  12. MAZ13

    The best magazine in Electrical Engineering field

    I forgot to say, my field of activity is "Transmission and Distribution" (specifically: power quality).
  13. MAZ13

    The best magazine in Electrical Engineering field

    Hi dear friends, I'm looking for a magazine to subscribe. I'd like to receive the last news and to be informed about recent findings and developments. Also I'd like to give some informations about market and new products. Do you have any suggestion?! Thank you in advance..
  14. MAZ13

    Power factor controller equipment

    Thank you all for your valuable replies. In my experience, TSCs installed on a steel plant were able to reduce peak demand current from 3000A to 2500A and it was the major benefit of TSC according to client's opinion. By a fixed capacitor bank it would not been happend. However, I had not...
  15. MAZ13

    Power factor controller equipment

    I have some questions about capacitor banks and their related equipment. It would be pleasured if you let me know about your experiences. 1)There are some types of power factor controller(regulator) manufactured by companies like EPCOS, Janitza, etc. Do you have any experience in working with...
See more

Part and Inventory Search

Back
Top