Electrical Notes

By:Jignesh Parmar

Electrical Calculation Sheets:

1. Calculation of Cable Tray Size
2. Calculation Short Circuit Current (Base KVA Method)
3. Calculate Size of Bus bar & Panel Design
4. Calculate Street Light Pole’s Distance / Fixture Watt / Lighting Area
5. Calculate No of Street Light Poles
6. Calculate No of Lighting Fixtures / Lumen for Indoor Lighting
7. Calculate Size of Capacitor Bank / Annual Saving & Payback Period
8. Calculate Technical Losses of Transmission / Distribution Line
9. Calculate Cable Size and Voltage Drop
10. Calculate IDMT over Current Relay Setting (50/51)
11. Calculate TC Size & Voltage Drop due to starting of Large Motor
12. Calculate Size of Contactor, Fuse, C.B, Over Load Relay of DOL Starter
13. Calculate Voltage Regulation of Distribution Line
14. Calculate Numbers of Plate/Pipe/Strip Earthings (Part-3)
15. Calculate Numbers of Plate/Pipe/Strip Earthings (Part-2)
16. Calculate Numbers of Plate/Pipe/Strip Earthings (Part-1)

Electrical Notes:

1. Selection of Surge Protective Device (SPD)- (Part 4)
2. Selection of Surge Protective Device (SPD)- (Part 3)
3. Selection of Surge Protective Device (SPD)- (Part 2)
4. Selection of Surge Protective Device (SPD)- (Part 1) 
5. Various Routine Test of Power Transformer-(Part-4)
6. Various Routine Test of Power Transformer-(Part-3)
7. Various Routine Test of Power Transformer-(Part-2)
8. Various Routine Test of Power Transformer-(Part-1)
9. Selection for Street Light Luminar-(PART-5)
10. Selection for Street Light Luminar-(PART-4)
11. Selection for Street Light Luminar-(PART-3)
12. Selection for Street Light Luminar-(PART-2)
13. Selection for Street Light Luminar-(PART-1)
14. Cable Tray Size as per National Electrical Code-2002. Article 392
15. Motor Name Plate Terminology
16. Electrical Thumb Rule-(Part-11)
17. Electrical Thumbs Rules (Part-10)
18. Electrical Thumbs Rules (Part-9)
19. Electrical Thumb Rules-(Part-8)
20. Electrical Thumb Rules-(Part-7)
21. Electrical Thumb Rules-(Part-6)
22. Electrical Thumb Rules-(Part-5)
23. Electrical Thumb Rules-(Part-4)
24. Electrical Thumb Rules-(Part-3)
25. Electrical Thumb Rules (Part-2)
26. Electrical Thumb Rules-(Part 1).
27.  IP Rating for Electrical Enclosure
28. Pirating of Technical Works.
29. Selection of 3P-TPN-4P MCB & Distribution Board
30. Total Losses in Power Distribution and Transmission Lines-(Part 2)
31. Total Losses in Power Distribution & Transmission Lines-(Part 1)
32. Size and Location of Capacitor in Electrical System-(Part 2)
33. Size and Location of Capacitor in Electrical System-(Part1)
34. Difference between Unearthed Cable & Earthed Cables
35. Over Current Relay(Type-Application-Connection)
36. Types and Revolution of Electrical Relays
37. Abstract of over current Protection of Transformer (NEC 450.3)
38. Difference between Bonding, Grounding and Earthing
39. Safety Clearance for Transformer
40. Safety Clearance for Electrical Panel
41. Electrical Safety Clearance (Part-6)
42. Electrical Safety Clearance (Part-5)
43. Electrical Safety Clearance (Part-4)
44. Electrical Safety Clearance (Part-3)
45. Electrical Safety Clearance (Part-2)
46. Electrical Safety Clearance (Part-1)
47. Impact of Floating Neutral in Power Distribution
48. Parallel Operation of Transformer
49. Vector Group of Transformer
50. Auto Transformer Connection
51. Scott-T Connection of Transformer
52. Zig-zag Connection of Transformer
53. Star-Delta Connection of Transformer
54. Delta-Star Connection of Transformer
55. Delta-Delta Connection of Transformer
56. Star-Star Connection of Transformer
57. Insulation Resistance (IR) Values of Electrical Equipments
58. Star-Delta Starter
59. Direct On Line Starter
60. Effects of High Voltage Transmission Lines on Humans and Plants
61. Analysis the Truth behind Household Power Savers
62. Types of Neutral Earthing in Power Distribution Systems
63. EHV/HV Cable Sheath Earthing
64. Abstract of NEC:430 for Size of Cable for Single or Group of Motors
65. HIPOT Testing
66. What is Earthing
67. Abstract of National Electrical Code for Transformer’s Protection
68. Guideline to Design Electrical Network for Building / Small Area.
69. Demand Factor-Diversity Factor-Utilization Factor-Load Factor
70. Working Principle of ELCB and RCB
71. Single Earthed Neutral and Multi Earthed Neutral.
72. Type of Electrical Power Distribution systems
73. Type of Cable Tray.
74. 11KV/415V Overhead Line Specification as per REC
75. Sub Station Abstracts
76. Tampering Methods of Electrical Energy Meter.
77. Specification for Re wirable Cut Out Fuse Unit
78. Low Voltage and High Voltage Cable Testing
79. Overload Relay Size & Contactor for Starter
80. Type of Gland
81. Gland Size Selection
82. EHV XLPE – Current Rating
83. XLPE Cable-Current Rating
84. PVC Cable-Current Rating
85. Type & Selection of Fuse
86. Minimum Electrical Clearance.
87. Difference between Power Transformer and Distribution Transformer
88. Type & Selection of Current Transformer
89. Electrical Clearance in Substation.
90. Transformer
91. Minimum Acceptable specification for Metering C.T
92. Typical Limiting Values of Substation Equipments.
93. Lighting Arr ester
94. Standard Makes for Electrical Equipments
95. Standard Electrical Motor Connections
96. Power Quality
97. Ferranti Effect in Transmission Line
98. What is Corona Effect in Transmission Line 
99. How Reactive Power helpful to maintain a System Healthy
100. Automatic Power Factor Correction
101. Harmonics and It’s Effects
102. HID Lamps
103. Types of Overhead Conductors
104. Difference Between  MCB/MCCB/ELCB/RCCB
105. Vibration Damper in Transmission Line
106. Electrical Energy Saving Tips