Your roadmap · आपका रोडमैप
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Admission & first meetingप्रवेश और पहली मुलाकातEnquire at your nearest NDSS centre, meet the teacher, fix the batch time and get your study material.
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Part 1 of the syllabusपाठ्यक्रम भाग 1Unit-wise coaching with notes and doubt classes.
Introduction to Transmission and DistributionOverhead Line ComponentsLine Parameters and Performance
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
InsulatorsUnderground CablesSubstations and Distribution Systems
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 4 exam (university / board)विश्वविद्यालय / बोर्ड परीक्षाPrevious papers and full revision before the exam.
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Online tests & resultऑनलाइन टेस्ट और रिज़ल्टTake the tests online; your marks and result show in your student login and at the centre.
Syllabus · पाठ्यक्रम
1 subject · 6 chapters · 27 topics
01Introduction to Transmission and Distribution
4 topics+
- Single-line diagram of a power system
- Standard voltages in India
- Advantages of high-voltage transmission
- AC and HVDC transmission
02Overhead Line Components
5 topics+
- Conductor materials and ACSR
- Line supports: poles and towers
- Cross arms, stays and earth wire
- Sag and its calculation
- Spacing and clearances
03Line Parameters and Performance
5 topics+
- Resistance, inductance and capacitance of lines
- Short, medium and long lines
- Efficiency and regulation of short lines
- Ferranti effect
- Corona
04Insulators
4 topics+
- Insulator materials
- Pin, suspension, strain and shackle insulators
- Potential distribution and string efficiency
- Methods to improve string efficiency
05Underground Cables
4 topics+
- Construction of cables
- Types: PVC, XLPE and oil-filled
- Laying of cables
- Cable faults and Murray loop test
06Substations and Distribution Systems
5 topics+
- Types of substations
- Substation equipment: CB, isolator, LA, CT, PT
- Radial, ring main and interconnected systems
- Feeders, distributors and service mains
- Switching sequence and safety
About this course
You will be able to
- Explain the structure of power systems, standard voltages and the advantage of high-voltage transmission
- Select line conductors and supports and calculate sag
- Calculate efficiency and regulation of short lines and explain Ferranti effect and corona
- Select insulators and calculate string efficiency
- Explain construction, laying and fault location of underground cables
- Explain substations, their equipment and distribution systems
Who it is for
- Diploma Electrical Engineering students of Semester 4 (BTEUP)
- Students aiming for jobs with power distribution companies (DISCOMs)
- Students preparing for JE (Electrical) exams
What you need
- Electrical circuits and basic power generation of Semester 3
Online tests & result
Practice and unit tests online; marks and result show in your student login and at the centre.
Student login →
Questions
Are sag and line efficiency numericals included?
Yes. Sag, short-line efficiency, string efficiency and number of discs problems are solved.
Is substation practice covered?
Yes. Equipment, layout and the safe switching sequence are explained.
Is this course based on the BTEUP syllabus?
Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.
