Showing posts from 2016

Dielectric Loss Calculation for XLPE Insulated Single Core Copper Cable

Dielectric loss calculation means the calculation of electromagnetic energy loss as inherent dissipation of dielectric material. Dielectric loss is represents as tan δ widely known asloss angle or loss tangent. An example to calculate Dielectric Loss for 132 kV XLPE single core copper conductor cable: Above formula shows the calculated dielectric loss for mentioned cable is 0.38 watt per meter. Where the parameters used to calculate this value are shown. Rated voltage 132 kV, so, phase to earth voltage is 76.2 kV or 76,200 volt (132/sq. root 3); Insulation thickness 18 mm (outer diameter – inner diameter)/2 or (74.5-38.5)/2; Value of loss angle tan δ depends on type of material.
What Is XLPE? XLPE is the shorten of Crossed Link Polyethylene,Cross-Linked Polyethylene (XLPE) is modified three-dimensional molecular Polyethylene structurethat is manufactured from polyethylene plastic to improve some specific properties like- heat deformation, smokeless during fire, abrasion, continuous work at…


Conduit and Accessories Installation Factors
Conduit, accessories and trunking installation should comply with the latest issued Regulations for the Electrical Equipment of Buildings by the Institution of Electrical Engineers, unless otherwise approved by the Engineer. In addition installation should also comply with all local electricity regulations.
All metallic conduit and conduit fittings should be galvanized, heavy gauge steel, screwed, solid drawn or weld type complying with IEC 423 and IEC 614.
Conduit Types and SpecificationsFollowing conduit and raceways specification should be utilize if where it is required or as per instruction of authorized engineer:
·Power Conduit- HDPE/ASTM F2160; ·Electrical Conduit- EB, PE & rigid PVC/UL 651A/UL 651B; ·Telecommunication Conduit- HDPE/ASTM F2160; ·Premise Raceways- UL 2024 Optical Fiber Cable Raceway.
PE Conduit uses in power transmission and communication like substation to transformer, secondary transformer to end-user cable, telephone,…

আপনার ফোন দিয়েই গাড়ি বা প্রয়োজনীয় বস্ত খুঁজে বের করুন।

আপনি কি কখনও পার্কিং লটে আপনার গাড়ী হারিয়েছেন? এটা হতেই পারে। আপনি গাড়ি পার্ক করে কেনাকাটা করার জন্য গেলেন, আর যখন ফিরে এলেন, আপনি মনে করতে পারছেন না আপনার গাড়ী কোথায়। হযতো আপনি কাছাকাছিই আছেন, কিন্ত গাড়ি খুজে পাচ্ছেন না, কি করবেন? বারবার আপনার গাড়ির চাবির উপর প্যানিক বাটন ক্লিক করবেন। এতে হয়তো এলার্ম বন্ধ হয়ে যাব। এটা হতাশাজনক হতে পারে, বিশেষ করে কোন গরম বা বৃষ্টির দিনে হলে তো আরও বিরক্তিকর হবে। কিন্ত সমাধান কি; না, আপনি আপনার গাড়ির জন্য ট্র্যাকে রাখা একটি ব্যয়বহুল জিপিএস সিস্টেম ক্রয় করার প্রয়োজন হবে না। কেবল ছোট একটি ট্র্যাকিং ডিভাইস ব্যাবহার করে সহজেই আপনার গাড়ী ট্র্যাক করতে পারবেন। স্বল্প খরচে বাজারযাত করার লক্ষ্যে প্রযুক্তিবিদরা এ নিয়ে কাজ করছেন।

এ যন্ত্রটার নাম দেয়া হয়েছে ট্র্যাকার-ব্রাভো। এটি খুব সহজ, বিনামূল্যে TrackR অ্যাপ্লিকেশন ইনস্টল করে ফোনের সাহায্যেই আপনার গাড়ি ট্র্যাক করতে পারবেন। আপনি আপনার ব্রিফকেস, মানিব্যাগ, আপনার সর্বশেষ কারিগরি গ্যাজেট এবং অন্য যেকোন কিছুর সাথে এটা সংযুক্ত করে হারানো বা খুজে না পাওয়ার হাত থেকে রক্ষা করতে পারেন। সেকেন্ডের মধ্যে আপনার অনুপস্থি…

Thunderstorm and Lightning:Electrical Development

Developing Thunderstorm and Lightning in Space
Storms are forming all over the world continuously and number is around 5,000.These storms are going together with lightning and cause a serious risk for both people and equipment.  The hitting rate of strokes of lightning at the ground is about 30 to 100 strokes per second. The earth is struck by about 3 billion strokes of lightning each year.
All over the world, thousands of people are struck by lightning and a lot of animals are killed every year. It also causes a large number of fires which destroying forest, industries, commercial & residential building.  Lightning mainly affects the equipments of electrical and electronic system, appliances of residential and industrial sector; the financial figure for damage is very high.
Electrical Development of a Storm Cloud and Stages of a thunderstorm's Life Cycle:Hot air rising from the ground and it collects water droplets until it becomes a cloud. The droplets are separated and transfo…

Manufacture Of Electric Power Cables and Chronological Development

Underground Power Cable Installation:This Video Clip shows how installed underground power cable.  This is not used modern equipment and technology.
You could see the initial technology for oilfield underground power cable and it's installation and erection procedure. 

Early to Latest Technology for Power Cable Manufacturing:The telegraph line was the earliest device where people first think and establish to transmit electrical energy through underground cable.
Mr. Bruce S. Bernstein &William A. Thue quoted in the book of Historical Perspective of Electrical Cables as- In 1812, Baron Schilling detonated a mine under the Neva River at St. Petersburg, Russia, by using an electrical pulse sent through a cable insulated with strips of India rubber. This is probably the earliest use of a continuously insulated conductor on record.  One of the earliest experiments with an underground cable was made by Francis Ronalds in 1816. This work was in conjunction with a system of telegraphy cons…

List Of All International Standard

What is Standard?
Standard is something what is used as a model of measure or comparative calculations; heartily, a standard is doing something agreed with a mass way.It could be applicable for an industrial product, services of an organization or managing a process.

List of Standards OrganizationsThere are so many standard organizations who develop and coordinate to implement in practical way. Some of them are as below: 3GPP — 3rd Generation Partnership Project 3GPP2 — 3rd Generation Partnership Project 2 Accellera — Accellera Organization A4L — formerly known as the Schools Interoperability Framework AIIM — Association for Information and Image Management ASAM - Association for Automation and Measuring Systems - Automotive technology ASME — formerly The American Society of Mechanical Engineers ASTM International ATIS - Alliance for Telecommunications Industry Solutions AUTOSAR — Automotive technology BIPM, CGPM, and CIPM — Bureau International des Poids et Mesures and the related organizations e…


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