표제지
목차
ABSTRACT 8
I. 서론 9
II. 차단기 소호원리 및 현상 10
2.1. 아크와 소호 10
2.2. 아크의 성질 11
2.3. 소호 원리 12
2.4. 차단 현상 13
2.5. 교류 차단기 소호방식 14
III. 차단기 종류 및 소호원리 18
3.1. 기중 차단기 18
3.2. 자기소호 차단기 28
3.3. 진공 차단기 40
IV. 차단기 점검 및 고장원인 분석 52
4.1. 접촉자 점검 52
4.2. 기중/자기소호 차단기 점검 61
4.3. 진공 차단기 점검 66
4.4. 고장원인 분석 71
V. 사고 사례 분석 77
5.1. 고압 차단기반 화재발생 사고 사례 77
VI. 결론 88
참고문헌 89
감사의 글 90
Table 1. The relation of a cooling kind and blockade capacity 16
Table 2. The ratio of high voltage SWGR 31
Table 3. The area of the vacuum 43
Table 4. A material temperature rise limit of the point of contact 57
Table 5. A contact marker material the melting point 57
Table 6. A tour of inspection check 62
Table 7. The check normally 63
Table 8. A minuteness check 63
Table 9. The kind of the check 66
Table 10. Vacuum circuit breaker ordinary check 67
Table 11. A temporary check 68
Table 12. VCB vacuum a check Volt price 70
Table 13. The kind of a severing relations blazing fire 74
Table 14. Circuit breaker a severing relations blazing fire factor 74
Table 15. A blazing fire object of circuit breaker 76
Fig. 1. An arc of the air form 11
Fig. 2. An alternating current 0 Point usage 12
Fig. 3. An alternating current resist circuit blockade phenomenon 13
Fig. 4. An alternating current guidance circuit blockade phenomenon 14
Fig. 5. Front of view ACB example(SIEMENS, Westing House) 20
Fig. 6. Side of view ACB 21
Fig. 7. The phase barrier ACB 21
Fig. 8. plane of view ACB 21
Fig. 9. The kind of the ACB cooling device 22
Fig. 10. The arc shute of the ACB 23
Fig. 11. Front of view ACB 23
Fig. 12. Contacted area of the ACB 24
Fig. 13. Prime Connector of the ACB 25
Fig. 14. A cubicle inside appearance the ACB 26
Fig. 15. Operating mode ACB 27
Fig. 16. Connector of the ACB and Cooling principle 28
Fig. 17. High voltage SWGR and Low voltage SWGR 29
Fig. 18. Front of view the MBB example(ABB,GE) 32
Fig. 19. The MBB Left side and right side the structure 32
Fig. 20. The MBB of an external 33
Fig. 21. The Frame of the MBB 33
Fig. 22. The Phase barrier MBB 34
Fig. 23. Arc chute and Arc runner MBB 34
Fig. 24. Air blaster of the MBB 35
Fig. 25. Contact of the MBB 36
Fig. 26. Aux. switch of the MBB 36
Fig. 27. Prime Connector of the MBB 37
Fig. 28. The mode of an arc of the air cooling 39
Fig. 29. A cooling principle of MBB 40
Fig. 30. The experiment of Torricelli 41
Fig. 31. The degree of a vacuum and Insulation resisting pressure(Pashen Curve) 45
Fig. 32. Front of view VCB example(TOSHIBA) 47
Fig. 33. Vacuum interruptor structure 48
Fig. 34. Spiral slots contact 49
Fig. 35. Axial magnetic field contact 50
Fig. 36. The situation of a vacuum arc 51
Fig. 37. The kind of the point of contact 53
Fig. 38. An oxidation progress course of the metal in the room temperature 55
Fig. 39. An oxidation of the copper contact marker oxidation 56
Fig. 40. Circuit Breaker contact marker area measurement 60
Fig. 41. Circuit Breaker The result of the opening and shutting examination 60
Fig. 42. A vacuum to use the insulation pressure voltage an examination measurement 71
Fig. 43. A blazing fire factor of circuit breaker 72
Fig. 44. A v-t characteristic of a part electric discharge blazing fire 73
Fig. 45. A v-t characteristic of a treeing blazing fire 73
Fig. 46. A burglar - of an epoch balance temperature characteristic[JEM 1263] 75
Fig. 47. VCB Motor Spring an execution side 78
Fig. 48. Vacuum interruptor to be destroied 79
Fig. 49. The contactor to be destroied 79
Fig. 50. The PDS to be destroied 80
Fig. 51. A contact segment proper management of matters of the contact marker 80
Fig. 52. The contactor drawing 81
Fig. 53. A secondhand goods comparison with a contact marker new article 85