MV/HV Learning & Multiple Questions
MV/HV Learning & Multiple Questions
(OP)
Hi everyone, first post here. I recently changed jobs where I went from <600V to MV/HV. I reviewed the free resources on this site and was a little overwhelmed on where to start. Does anyone have a good recommendation on what to read first? I'm interested in learning more on relaying terminology to help me sort through One-Lines, Three-Lines, Wiring & Interconnection Diagrams.
Most of the stuff that I'm working on is 23kV, 115kV, and 345kV.
I'm also looking for more info in regards to Primary and Secondary Systems at Substations between the Control House and the Yard Equipment. Is this simply for redundancy and what are the design standards for this?
Also what does a CT with ratings 1200/5MR and 600/5T mean? I believe that the 1200/5MR means that 1200A on the circuit will yield 5A on secondary and it is multi-ratio but I don't know what the 600/5T is and why it has two ratings.
Most of the stuff that I'm working on is 23kV, 115kV, and 345kV.
I'm also looking for more info in regards to Primary and Secondary Systems at Substations between the Control House and the Yard Equipment. Is this simply for redundancy and what are the design standards for this?
Also what does a CT with ratings 1200/5MR and 600/5T mean? I believe that the 1200/5MR means that 1200A on the circuit will yield 5A on secondary and it is multi-ratio but I don't know what the 600/5T is and why it has two ratings.






RE: MV/HV Learning & Multiple Questions
The CT rating 'MR' does indeed mean Multi-Ratio. 'T' typically means that this is a 'Tested' rating, as opposed to 'C' which stands for Calculated. A CT of nominal ratio 1200/5 (or 1200:5) will indeed yield 5A on the secondary when 1200A flows on the primary.
RE: MV/HV Learning & Multiple Questions
RE: MV/HV Learning & Multiple Questions
1955
Donald Beeman, Industrial Power system Handbook, Mc Graw hill Book Company, Pages 971, 1955
1966
Eustace C Soares, Grounding Electrical Distribution Systems for Safety
Juan M Gers, Protection of Electricity Distribution Networks (IEE Power and Energy Series)
1993
IEEE Std 141-1993 Recommended Practice for Electric Power Distribution for Industrial Plants (Red Book)
1994
James J Burke, Power Distribution Engineering, Mercel & Dekker Inc, 1994, Pages 356
1995
Joseph F Mc Partland, Handbook of Practical Electrical Design,ed2.0,Mc-Grawhill Book Company,1995, Pages 732
2007
J R Dunki-Jacobs, F J Shields, Conrad St.Pierre, Industrial Power system Grounding design Handbook, www.groundingdesignbook.com Pages 568
2008
Kamalesh Das, Electrical Power Systems for Industrial Plants, Jaico Publishing House, Pages 540, 2008
Shoiab Khan – Industrial Power System, CRC Press
Soares Book on Grounding and Bonding, 10th ed. International Association of Electrical Inspectors
2010
Juran M Gers, Edward J Holmes, Protection of Electricity Distribution Networks, Pages 342,ed2.0, 2004,2010
2014
Turan Gonen, Electric Power Distribution Engineering ed 3.0, CRC Press
Thomas Allen Short, Electric Power Distribution Handbook (Electric Power Engineering Series ) ed 2.0,2014
Then Of course color books as mentioned by Dandel.
RE: MV/HV Learning & Multiple Questions
RE: MV/HV Learning & Multiple Questions
There is a relaying accuracy class that uses a "T", as was mentioned above, e.g. T200, T400 versus C200, C400.
RE: MV/HV Learning & Multiple Questions
RE: MV/HV Learning & Multiple Questions