Switchgear and Protection|教育線上App不用買

This unique free application is for all students across the world. It covers 152 topics of Switchgear and Protection in detail. These 152 topics are divided in 9 units.

Each topic is around 600 words and is complete with diagrams, equations and other forms of graphical representations along with simple text explaining the concept in detail.

This USP of this application is "ultra-portability". Students can access the content on-the-go from anywhere they like.

Basically, each topic is like a detailed flash card and will make the lives of students simpler and easier.

Some of topics Covered in this application are:

1. Functions of Protective Relaying

2. Protective zones

3. Primary and Backup Protection

4. Concept of Backup Relaying

5. Methods of Backup Protection

6. Nature and Causes of Faults

7. Fault Current Calculation using Symmetrical Components

8. Qualities of Protective Relaying - Reliability & Selectivity and Discrimination

9. Qualities of Protective Relaying - Speed and time & Sensitivity

10. Qualities of Protective Relaying - Stability, Adequateness & simplicity and economy

11. Classification of Protective Relays

12. Terminologies used in Protective Relaying

13. Instrument Transformers

14. Tripping Schemes In Circuit Breaker -Relay with Make Type Contact

15. Working Principle of Current Transformers

16. Construction of Wound type Current Transformers

17. Construction of Bar Type Current Transformers

18. Construction of potential transformers

19. Comparison of Current Transformer and Power Transformer

20. Errors in the Instrument Transformer - Ratio Error

21. Errors in the Instrument Transformer - Phase Angle Error

22. Reduction of Ratio and Phase Angle Errors

23. Advantages and Disadvantages of Instrument Transformers

24. Introduction to Electromagnetic Relays

25. Tripping Schemes In Circuit Breaker - Relay with Break type contact

26. Electromagnetic Attraction Relays - Attracted Armature Type Relay

27. Electromagnetic Attraction Relays - Solenoid and plunger type relay

28. Operating Principle of Electromagnetic Attraction Relays

29. Advantages, disadvantages and application of Electromagnetic Relays

30. Directional Power Relay

31. Directional Induction Type Overcurrent Relay

32. Operation of Directional Induction Type Overcurrent Relay

33. Directional Characteristics of Induction Type Overcurrent Relay

34. Introduction to Differential Relays

35. Current differential relay

36. Percentage Differential Relay

37. Voltage Balance Differential Relay

38. Busbar Protection, Faults & Difficulties

39. Frame Leakage Protection of Busbar

40. Circulating Current Protection of Busbar

41. High Impedance Differential Protection of Busbar

42. Thermal Relays

43. Basic Elements of a Static Relay

44. Measuring element in a static Relay

45. Comparison of Static and Electromagnetic Relays & Advantage of Static Relays

46. Limitations & Semiconductor Devices used in Static Relays

47. Static Time Current Relay

48. Inverse Time-Current Relay

49. Directional Static Overcurrent Relay

50. Static Differential Relay

51. Static Distance Relay

52. Microprocessor Based Relay

53. Introduction of Circuit Breakers

54. Formation of an Arc

55. D.C. and A.C Circuit Breaking

56. Short Circuit In R- L Series Circuit - Complementary Solution

57. Short Circuit in R- L Series Circuit - Particular Solution

58. Short Circuit in R- L Series Circuit - Complete Solution

59. Analysis of the complete solution of short circuit in RL series circuit

60. Current Interruption in A.C. Circuit Breakers

61. Transient Recovery Voltage

62. Arc Interruption - Recovery Rate theory

63. Arc Interruption - Energy balance theory

64. Requirements and Basic Action of a circuit breaker

65. Classification of circuit breaker

66. Construction of Air blast Circuit breakers

All topics are not listed because of character limitations set by the Play Store.

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