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... said on Tuesday. After meeting Montenegrin Prime Minister Milo Djukanovic in the capital Podgorica, Scajola said "investors are also interested in installing an undersea electric power cable ...  ...
KANAGAWA, Japan----OKI Electric Cable today announced that its 14 meter Flexible Printed Circuit was selected by Japan Aerospace Exploration Agency , to be used for their probe, "IKAROS*1," which is a ...
3. Earth Fault-Loop Impedance Part 3
(References/Tutorials)
In Part 2, we did a simple calculation for the maximum length of the cable. We have not considered the internal impedance of the source, i.e. the transformer impedance. Likewise, we just consider the current ...
4. Earth Fault-Loop Impedance Part 2
(References/Tutorials)
... - cable impedance is limiting the earth fault current, the only solution will be using a residual current (earth leakage) protection. It is not always advisable to have this solution though. There are ...
5. Time-Current Curves with Excel IV
(References/Tutorials)
... 250A set @ 5IN Supply Cable Size : 35 mm2 PVC/PVC Primary Circuit Breaker (0.16 time multiplier) Rating : 160A Setting 1 : 800A @ 5IN Setting 2 : 1120A @ 7IN Power Transformer Rating: 2500 kVA, 11/0.415kV, ...
... switching impulse voltage (Us) (when applicable), and power-frequency voltage (Ud) shall be selected without crossing the horizontal marked lines. The rated insulation level is specified by the rated lightning ...
... a year to our member who are able to provide the first correct answer to our challenge question. The Challenge: The photos are taken from the cable compartment of an 11KV Switchgear. The installation ...
Selecting the right equipment to perform the right task during design is a tedious job. A very good example is the variable speed drive (VSD) versus Soft Starter(SS). On low capacity drives (
... other applicable codes and regulations relating to human safety.  ...
... the frames and enclosures of electric apparatus, such as motors, switchgear, transformers, buses, cables, conduits, building frames, and portable equipment, to a ground system is addressed. The fundamentals ...
As the final article on voltage drop and cable selection series, I am now providing a complete worksheet for cable selection based on the IEC standards 60228 and 60364-5-54. I created the worksheet in ...
12. A New Environment
(News/Blog)
... for load calculations, load flow analysis, cables sizing calculations, etc., there were none. Then I said to myself, I will be having a tough time here. A good tip to those people who are transferring ...
13. Moving On
(News/Blog)
... upcoming articles will be:Cable short circuit withstand Cable selection economy And many more. . .  ...
14. Cable Operating Temperature
(References/Tutorials)
Electrical design requires selecting the cable with the correct temperature rating. Designers tend to select the cable with the highest temperature rating, this is not acceptable as the first cost of the ...
15. Voltage Drop Calculation - Part 3
(References/Tutorials)
In our example in Voltage Calculation - Part 2, we have only considered a single cable and checked only the voltage drop at starting. In actual practice, we shall be comparing several cable sizes, selecting ...
16. Voltage Drop Calculation - Part 2
(References/Tutorials)
... of what you have already done or currently doing in your design. We shall be presenting an IEC standard equipment in our sample calculation. A 120 mm2 3core XLPE insulated cable 120m in length ...
17. Voltage Drop Calculation
(References/Tutorials)
This article is the first of a series in the selection of electrical cables. Cable selection is an important part of electrical installation design. Selecting the correct size of cable could lower ...
18. Earthing and Bonding
(News/Latest)
... As normally applied to instrumentation cables, a conductive sheath (usually metallic) applied over the insulation of a conductor or conductors, for the purpose of providing means to reduce coupling between ...
19. IEC 60079 - General Requirements
(Standards News/IEC)
... ambient temperature range shall then be stated by the manufacturer. The marking shall then include either the symbol Ta or Tamb together with the special range of ambient temperatures or, if this is impracticable, ...
20. Classification of Hazardous Areas
(Standards News/IEC)
... because the flammability characteristics of mists are not always predictable. Whilst it can be difficult to decide upon the type and extent of zones, the criteria applicable to gases and vapours will, ...
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