حساب مقاطع كابلات التغذیة

1. ١ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﻣﻘﺎﻃﻊ‬ ‫ﺡﺴﺎب‬‫آﺒﻼت‬‫اﻟﺘﻐﺬیﺔ‬
Feeders Cross Section
Calculation FCSC
‫وﺕﻘﺪیﻢ‬ ‫إﻋﺪاد‬
‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫اﻟﺴﻮریﺔ‬ ‫اﻟﻌﺮﺏﻴﺔ‬ ‫اﻟﺠﻤﻬﻮریﺔ‬‫ﺕﺪﻗﻴﻖ‬ ‫دورة‬‫اﻟﻜﻬﺮﺏﺎﺋﻴﺔ‬ ‫اﻟﺪراﺳﺎت‬
٣٠/١١/٢٠٠٥
٠١/١٢/٢٠٠٥
‫اﻟﻤﻬﻨﺪﺳﻴﻦ‬ ‫ﻥﻘﺎﺏﺔ‬‫اﻟﺴﻮریﻴﻴﻦ‬
‫ﻣﺤﺎﻓﻈﺔ‬ ‫ﻥﻘﺎﺏﺔ‬ ‫ﻓﺮع‬‫ﺡﻤﺺ‬

2. ٢ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﻣﻘﺎﻃﻊ‬ ‫ﺡﺴﺎب‬‫آﺒﻼت‬‫اﻟﺘﻐﺬیﺔ‬
Feeders Cross Section Calculation FCSC
‫ﺍﻟﻔﻬﺮﺱ‬
١-‫ﻣﻘﺪﻣﺔ‬.................................................................................................٢
٢-‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳﺔ‬.....................................................................٢
٣-‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺍﺧﺘﻴﺎﺭ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﳌﺘﺴﺎﻭﻱ‬ ‫ﺍﻟﻜﻤﻮﻥ‬ ‫ﻭﻧﺎﻗﻞ‬..................١٨
٤-‫ﺍﻟﻘﺼﺮ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳﺔ‬....................................................................٢٠
٤-١‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻟﺸﺒﻜﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬..............................٢١
٤-٢‫ﲪﺎﻳﺔ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﺍﻟﻘﺼﺮ‬ ‫ﻣﻦ‬................................................................٢٥
٤-٣‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻋﻨﺪﻫﺎ‬ ‫ﻣﻌﻄﻰ‬ ‫ﻧﻘﻄﺔ‬ ‫ﲢﺖ‬ ‫ﺗﻘﻊ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬....٢٨
٥-‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬........................................................................................٣٠
٥-١‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﺣﺴﺎﺏ‬ ‫ﰲ‬ ‫ﺍﳌﺴﺘﺨﺪﻣﺔ‬ ‫ﺍﻟﻌﻼﻗﺎﺕ‬...............................٣١
٦-‫ﺗﻄﺒﻴﻘﻲ‬ ‫ﻣﺜﺎﻝ‬......................................................................................٣٣
٧-‫ﺍﳌﺮﺍﺟﻊ‬...................................................................................٣٩

3. ٣ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﻣﻘﺎﻃﻊ‬ ‫ﺡﺴﺎب‬‫آﺒﻼت‬‫اﻟﺘﻐﺬیﺔ‬
Feeders Cross Section Calculation FCSC
١-‫ﻣﻘﺪﻣﺔ‬:
‫ﺃﺳﺎ‬ ‫ﺃﻣﺮ‬ ‫ﺍﻟﺘﻄﺒﻴﻘﻴﺔ‬ ‫ﺍﺳﺘﺨﺪﺍﻣﺎﺗﻪ‬ ‫ﻣﻊ‬ ‫ﻟﻠﻜﺒﻞ‬ ‫ﺍﻟﻔﻨﻴـﺔ‬ ‫ﺍﳌﻮﺍﺻﻔﺎﺕ‬ ‫ﺗﻨﺎﺳﺐ‬ ‫ﺇﻥ‬‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﻭﻳﻌﺘﻤﺪ‬ ،‫ﺳﻲ‬
‫ﻣﻨﻬـﺎ‬ ‫ﻋﺪﻳﺪﺓ‬ ‫ﻋﻮﺍﻣﻞ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻟﻜﺒﻼﺕ‬:،‫ﺍﻟﺘﻨﻔﻴﺬ‬ ‫ﻣﻮﻗﻊ‬ ‫ﻭﻣﻌﻄﻴﺎﺕ‬ ،‫ﺍﻟﺘﺼﻨﻴﻊ‬ ‫ﻣﻮﺍﺻﻔﺎﺕ‬
‫ﻣﺮﺍﻋﺎﻬﺗﺎ‬ ‫ﺍﳌﻄﻠﻮﺏ‬ ‫ﺍﶈﻠﻴﺔ‬ ‫ﺍﻟﻜﻬﺮﺑﺎﺋﻴﺔ‬ ‫ﻭﺍﻷﻧﻈﻤﺔ‬...‫ﻣﺮﺍﻋﺎﻬﺗﺎ‬ ‫ﳚﺐ‬ ‫ﺍﻟﱵ‬ ‫ﺍﻟﻔﻨﻴﺔ‬ ‫ﺍﻟﻌﻮﺍﻣﻞ‬ ‫ﻳﻠﻲ‬ ‫ﻭﻓﻴﻤﺎ‬
‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﻛﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﻋﻨﺪ‬:
–‫ﻟﻠﻜﺒﻞ‬ ‫ﺍﻟﻌﻤﻞ‬ ‫ﺗﻮﺗﺮ‬:‫ﻟﻠﺤﻤﻞ‬ ‫ﺍﻟﻔﻨﻴﺔ‬ ‫ﺍﳌﻮﺍﺻﻔﺎﺕ‬ ‫ﻣﻊ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺬﺍ‬ ‫ﻳﺘﻮﺍﻓﻖ‬ ‫ﺃﻥ‬ ‫ﳚﺐ‬.
–‫ﺍﻟﺘﻨﻔﻴﺬ‬ ‫ﻭﻃﺮﻳﻘﺔ‬ ‫ﺍﻟﻌﻤﻞ‬ ‫ﻇﺮﻭﻑ‬:‫ﻃﺒﻴﻌﺔ‬ ‫ﲝﺴﺐ‬ ‫ﻵﺧﺮ‬ ‫ﻣﻜﺎﻥ‬ ‫ﻣﻦ‬ ‫ﺍﻟﻌﻤﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﲣﺘﻠﻒ‬
‫ﹰ‬‫ﻼ‬‫ﻓﻤﺜ‬ ،‫ﳍﺎ‬ ‫ﺍﳌﻨﺎﺳﺐ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻧﻮﻉ‬ ‫ﳜﺘﻠﻒ‬ ‫ﹶﻢ‬‫ﺛ‬ ‫ﻭﻣﻦ‬ ،‫ﺣﺮﺍﺭﺗﻪ‬ ‫ﻭﺩﺭﺟﺔ‬ ‫ﺍﳌﻜﺎﻥ‬:‫ﺍﺳﺘﺨﺪﺍﻣﺎﺕ‬ ‫ﲣﺘﻠﻒ‬
‫ﺍﻟـ‬ ‫ﲟﺎﺩﺓ‬ ‫ﺍﳌﻌﺰﻭﻝ‬ ‫ﺍﻟﻜﺒﻞ‬pvc‫ﺍﻟﺪﺭﺟﺔ‬ ‫ﺣﱴ‬ ‫ﻟﻠﻌﻤﻞ‬ ‫ﺍﳌﺼﻤﻤﺔ‬ ‫ﻟﻠﺤﺮﺍﺭﺓ‬ ‫ِﻣﺔ‬‫ﻭ‬‫ﺍﳌﻘﺎ‬70ºC‫ﺃﻭ‬85ºC
‫ﺍﻟـ‬ ‫ﲟﺎﺩﺓ‬ ‫ﺍﳌﻌﺰﻭﻝ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﺍﺳﺘﺨﺪﺍﻣﺎﺕ‬ ‫ﻋﻦ‬XLPE Cross – Linked Polyethylene
‫ﺍﻟﺪﺭﺟﺔ‬ ‫ﺣﱴ‬ ‫ﻟﻠﻌﻤﻞ‬ ‫ﻭﺍﳌﺼﻤﻤﺔ‬ ‫ﻟﻠﺤﺮﺍﺭﺓ‬ ‫ﺍﳌﻘﺎﻭﻣﺔ‬90ºC‫ﻣﻦ‬ ‫ﺃﻓﻀﻞ‬ ‫ﲟﻮﺍﺻﻔﺎﺕ‬ ‫ﲤﺘﺎﺯ‬ ‫ﻭﺍﻟﱵ‬ ،
‫ﻟﻠﺘﻴﺎﺭ‬ ‫ﻭﲢﻤﻠﻬﺎ‬ ‫ﻟﻠﺮﻃﻮﺑﺔ‬ ‫ﻣﻘﺎﻭﻣﺘﻬﺎ‬ ‫ﺣﻴﺚ‬.‫ﺗﻀﻊ‬ ‫ﻫﺬﻩ‬ ‫ﺍﻟﻌﻤﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﺍﺧﺘﻼﻑ‬ ‫ﻭﺑﺴﺐ‬
‫ﺍﳌﺼﻨﻌـﺔ‬ ُ‫ﺕ‬‫ﺍﻟﺸﺮﻛﺎ‬‫ﻟﻠﻜﺒﻼﺕ‬‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬ ‫ﲟﻮﺟﺒﻬﺎ‬ ‫ﳚﺮﻱ‬ ‫ﺍﻟﱵ‬ ‫ﺍﻻﻓﺘﺮﺍﺿﻴﺔ‬ َ‫ﻢ‬‫ﺍﻟﻘﻴ‬
‫ﻟﻠﻜﺒﻼﺕ‬‫ﹰ‬‫ﺎ‬‫ﻋﻤﻮﻣ‬ ‫ﺍﻟﻘﻴﻢ‬ ‫ﻫﺬﻩ‬ ‫ﻭﺗﺘﻀﻤﻦ‬ ،‫ﺍﳌﻨﺘﺠﺔ‬ ‫ﺍﳌﻘﺎﻃـﻊ‬ ‫ﺑﺪﻻﻟـﺔ‬:
-‫ﻓﻴﻬﺎ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻭﻋﻤﻖ‬ ‫ﳍﺎ‬ ‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﻭﺍﳌﻘﺎﻭﻣﺔ‬ ‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬.
-‫ﺍﳍﻮﺍﺀ‬ ‫ﰲ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻳﻨﻔﺬ‬ ‫ﻋﻨﺪﻣﺎ‬ ‫ﺍﶈﻴﻄﻴﺔ‬ ‫ﺍﳊﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬.
-‫ﺍﻟﻜﺒﻞ‬ ‫ﺗﻨﻔﻴـﺬ‬ ‫ﻃﺮﻳﻘـﺔ‬)‫ﻣﻌﺪﻧﻴﺔ‬ ‫ﺣﻮﺍﻣﻞ‬ ‫ﻋﻠﻰ‬ ، ‫ﺃﻧﺎﺑﻴﺐ‬ ‫ﺿﻤﻦ‬…(‫ﺍﻟﱵ‬ ‫ﻭﺍﳌﺴﺎﻓﺔ‬ ،
‫ﺑﻌﺾ‬ ‫ﻋـﻦ‬ ‫ﺑﻌﻀﻬﺎ‬ ‫ﺍﻟﻜﺒـﻼﺕ‬ ‫ﺗﻔﺼﻞ‬…
‫ﻫﺬ‬ ‫ﻭﰲ‬ ،‫ﺍﳌﻌﻄﺎﺓ‬ ‫ﺍﻻﻓﺘﺮﺍﺿﻴﺔ‬ ‫ﺍﻟﻘﻴﻢ‬ ‫ﲣﺘﻠﻒ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻋﻤﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﺍﺧﺘﻼﻑ‬ ‫ﻋﻨﺪ‬‫ﳚﺐ‬ ‫ﺍﳊﺎﻟﺔ‬ ‫ﻩ‬
‫ﺍﻟﺘﺼﺤ‬ ‫ﻋﻮﺍﻣﻞ‬ ‫ﻻﺧﺘﻴﺎﺭ‬ ‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺔ‬ ‫ﺗﻀﻌﻬﺎ‬ ‫ﺍﻟﱵ‬ ‫ﺍﳉﺪﺍﻭﻝ‬ ‫ﺇﱃ‬ ‫ﺍﻟﺮﺟﻮﻉ‬‫ﺍﳌﻼﺋﻤﺔ‬ ‫ﻴﺢ‬
‫ﺍﻟﻔﻌ‬ ‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻗﻴﻤﺔ‬ ‫ﳊﺴﺎﺏ‬ ‫ﺍﻟﻌﻮﺍﻣﻞ‬ ‫ﻫﺬﻩ‬ ‫ﻭﺗﺴﺘﺨﺪﻡ‬ ،‫ﺍﳉﺪﻳﺪﺓ‬ ‫ﻟﻠﻈﺮﻭﻑ‬‫ﻟﻠﻜﺒﻞ‬ ‫ﻠﻲ‬.
٢–‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳﺔ‬:
‫ﺑﺄﻬﻧﺎ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ّﻑ‬‫ﺮ‬‫ُﻌ‬‫ﺗ‬"‫ﳌﺪﺓ‬ ‫ﹰ‬‫ﺎ‬‫ﻛﻬﺮﺑﺎﺋﻴ‬ ‫ﺳﻠﻴﻤﺔ‬ ‫ﺩﺍﺭﺓ‬ ‫ﰲ‬ ‫ﺍﳌﺎﺭ‬ ‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﰲ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﺣﺪﻭﺙ‬
‫ﻗﺼﲑﺓ‬."‫ﺑﺂﻥ‬ ‫ﺑﺎﻟﺪﺍﺭﺓ‬ ‫ﺍﻟﺘﺠﻬﻴﺰﺍﺕ‬ ‫ﻣﻦ‬ ‫ﻛﺒﲑ‬ ‫ﻋﺪﺩ‬ ‫ﻭﺻﻞ‬ ‫ﻧﺘﻴﺠﺔ‬ ‫ﺍﻟﺰﻳﺎﺩﺓ‬ ‫ﻫﺬﻩ‬ ‫ﺗﻜﻮﻥ‬ ‫ﻭﻗﺪ‬،‫ﻭﺍﺣﺪ‬
‫ﺯﻳﺎﺩﺓ‬ ‫ﺇﱃ‬ ‫ّﻙ‬‫ﺮ‬‫ﳏ‬ ‫ّﺽ‬‫ﺮ‬‫ﺗﻌ‬ ‫ﻧﺘﻴﺠﺔ‬ ‫ﺃﻭ‬ ،‫ﺍﻷﺟﻬﺰﺓ‬ ‫ﻫﺬﻩ‬ ‫ﺃﺣﺪ‬ ‫ﰲ‬ ‫ﻋﻄﻞ‬ ‫ﻧﺘﻴﺠﺔ‬ ‫ﺃﻭ‬‫ﻣﻴﻜﺎﻧﻴﻜﻴﺔ‬ ‫ﲪﻮﻟﺔ‬.
‫ﻣﻌﲔ‬ ‫ﺣﺪ‬ ‫ﻋﻠﻰ‬ ‫ﺗﺰﻳﺪ‬ ‫ﳌﺪﺓ‬ ‫ﺍﻟﺰﻳﺎﺩﺓ‬ ‫ﺍﺳﺘﻤﺮﺕ‬ ‫ﻭﺇﺫﺍ‬)‫ﺍﳌﺪﺓ‬ ‫ﻋﻠﻰ‬ ‫ﺗﻌﺘﻤﺪ‬‫ﹼﻔﺔ‬‫ﻟ‬‫ﺍﳌﻮ‬‫ﺃﻭ‬ ‫ﺍﳊﺎﻛﻤﺔ‬ ‫ﻋﻠﻴﻬﺎ‬
‫ﺍﻟﻔﺎﺻﻤﺔ‬(‫ﹰ‬‫ﺎ‬‫ﺁﻟﻴ‬ ‫َﻞ‬‫ﺼ‬‫ُﻔ‬‫ﺗ‬ ‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﻓﺈﻥ‬.

4. ٤ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳌﺼﻐـﺮﺓ‬ ‫ﺍﻟﻜﻬﺮﺑﺎﺋﻴـﺔ‬ ‫ﺍﻟﻘﻮﺍﻃـﻊ‬ ‫ﺗﺴﺘﺨﺪﻡ‬MCB Miniature Circuit Breaker‫ﳊﻤﺎﻳـﺔ‬
‫ﻭﻣﻦ‬ ‫ﺍﳊﻤﻮﻟـﺔ‬ ‫ﺯﻳـﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﺍﻟﻜﺒﻼﺕ‬‫ﺩﺍﺭﺍﺕ‬‫ّﻊ‬‫ﻨ‬‫ﻭﺗﺼ‬ ،‫ﹰ‬‫ﺎ‬‫ﺃﻳﻀ‬ ‫ﺍﻟﻘﺼﺮ‬‫ﺗﺼﻞ‬ ‫ﲪﻮﻟـﺔ‬ ‫ﻟﺘﻴـﺎﺭﺍﺕ‬
‫ﺇﱃ‬ ‫ﻗﻴﻤﺘﻬﺎ‬100A‫ﻭﺍﺳﺘﻄﺎﻋﺎﺕ‬‫ﺇﱃ‬ ‫ﺗﺼـﻞ‬ ‫ﻗﺼﺮ‬50 kA،‫ﺗﻔﺼﻞ‬ ‫ﻭﻫﻲ‬Trip‫ﺍﻷﲪﺎﻝ‬
‫ﰲ‬ ‫ﲪﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﺗﻴـﺎﺭﺍﺕ‬ ‫ﻣﺮﻭﺭ‬ ‫ﻋﻨـﺪ‬ ‫ﻋﻠﻴﻬﺎ‬ ‫ﺍﳌﻮﺻﻮﻟـﺔ‬‫ﻧﻮﺍﻗﻞ‬‫ﺩﺭﺟﺔ‬ ‫ﺍﺭﺗﻔﺎﻉ‬ ‫ﻗﺒﻞ‬ ‫ﺍﻟﺪﺍﺭﺓ‬
‫ﺍﻟﻌﺎﺯﻟـﺔ‬ ‫ﺍﳌـﺎﺩﺓ‬ ‫ﺇﺗﻼﻑ‬ ‫ﺇﱃ‬ ‫ﻳﺆﺩﻱ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﳊﺪ‬ ‫ﺇﱃ‬ ‫ﺣﺮﺍﺭﻬﺗﺎ‬‫ﻟﻠﻨﻮﺍﻗﻞ‬‫ﺃﻭ‬ ‫ﺍﻟﺘﻮﺻﻴﻼﺕ‬ ‫ﺃﻭ‬
‫ﺣﻮﳍـﺎ‬ ‫ﺍﻟﱵ‬ ‫ﺍﳌﺴﺎﺣﺎﺕ‬.‫ﺍﻟﻮﺳﻂ‬ ‫ﰲ‬ ‫ﺍﳊﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﺍﺭﺗﻔﺎﻉ‬ ‫ﺃﺛﺮ‬ ‫ﻋﻠﻰ‬ ‫ﻫﻨﺎ‬ ‫ﺍﻟﺪﺭﺍﺳﺔ‬ ‫ﺗﺘﺮﻛﺰ‬ ‫ﺇﺫﻥ‬
‫ﺍﶈﻴـﻂ‬‫ﺑﺎﻟﻨﻮﺍﻗـﻞ‬‫ﻋﻠﻰ‬ ‫ﻣﺮﻛﺰﺓ‬ ‫ﺗﻜـﻮﻥ‬ ‫ﺃﻥ‬ ‫ﻣﻦ‬ ‫ﺃﻛﺜﺮ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﻧﻔﺴﻬﺎ‬.
‫ﺍﻵﺗﻴﺘﺎﻥ‬ ‫ﺍﻟﻌﻼﻗﺘﺎﻥ‬ ‫ﺗﺘﺤﻘﻖ‬ ‫ﺃﻥ‬ ‫ﳚﺐ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﻋﻨﺪ‬:
IB ≤ In ≤ Iz (1) I2 ≤ 1.45 Iz (2)
‫ﺣﻴﺚ‬:
IB:‫ﹼﻊ‬‫ﻗ‬‫ﺍﳌﺘﻮ‬ ‫ﺍﻷﻋﻈﻤﻲ‬ ‫ﺍﻟﺘﺼﻤﻴﻤﻲ‬ ‫ﺍﳊﻤﻞ‬ ‫ﺗﻴﺎﺭ‬)‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﺗﻴﺎﺭ‬.(
In:‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬ ‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬.‫ﻗﻴﻤﺔ‬ ‫ﻋﻠﻰ‬ ‫ﻟﻠﺘﻮﻟﻴﻒ‬ ‫ﻗﺎﺑﻞ‬ ‫ﺟﻬﺎﺯ‬ ‫ﺣﺎﻟﺔ‬ ‫ﰲ‬Ir‫ﻗﻴﻤﺔ‬ ‫ﺗﻜﻮﻥ‬In‫ﻫﻲ‬
‫ﺍﻟﻘﻴﻤﺔ‬‫ﹼﻒ‬‫ﻟ‬‫ﺍﳌﻮ‬‫ﺗﻜﻮﻥ‬ ‫ﻟﻠﺘﻮﻟﻴﻒ‬ ‫ﻗﺎﺑﻞ‬ ‫ﻏﲑ‬ ‫ﺟﻬﺎﺯ‬ ‫ﺣﺎﻟﺔ‬ ‫ﻭﰲ‬ ،‫ﺍﳉﻬﺎﺯ‬ ‫ﺫﻟﻚ‬ ‫ﻋﻠﻴﻬﺎ‬Ir = In.‫ﰲ‬
‫ﺣﻮﺍﻛﻢ‬‫ﺍﻟﺘﻮﻟﻴﻒ‬ ‫ﳎﺎﻝ‬ ‫ﻳﻜﻮﻥ‬ ‫ﻣﺎ‬ ‫ﹰ‬‫ﺎ‬‫ﻏﺎﻟﺒ‬ ‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﺍﻟﻔﺼﻞ‬In Ir =(0.7-1)،‫ﰲ‬ ‫ﺃﻣﺎ‬‫ﺣﻮﺍﻛﻢ‬‫ﺍﻟﻔﺼﻞ‬
‫ﺃﻛﱪ؛‬ ‫ﺍﻟﺘﻮﻟﻴﻒ‬ ‫ﳎﺎﻝ‬ ‫ﻓﻴﻜﻮﻥ‬ ‫ﺍﻹﻟﻜﺘﺮﻭﻧﻴﺔ‬Ir =(0.4-1) In‫ّﻑ‬‫ﺮ‬‫ﻭﻳﻌ‬ ،Ir‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﻗﻴﻤﺔ‬ ‫ﺑﺄﻧﻪ‬‫ﺍﻷﻋﻈﻤﻴﺔ‬
‫ﻳﻔﺼﻞ‬ ‫ﺃﻥ‬ ‫ﺩﻭﻥ‬ ‫ﺍﻟﻘﺎﻃﻊ‬ ‫ﳝﺮﺭﻫﺎ‬ ‫ﺍﻟﱵ‬.
Iz:‫ﺍﻟﺘﻴ‬ ‫ﻫﺬﺍ‬ ‫ﻗﻴﻤﺔ‬ ‫ﻭﺗﻌﺘﻤﺪ‬ ،‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﺃﻭ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻳﺘﺤﻤﻠﻪ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻷﻋﻈﻤﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬‫ﻋﻠﻰ‬ ‫ﻣﻌﲔ‬ ‫ﻟﻨﺎﻗﻞ‬ ‫ﺎﺭ‬:
-‫ﻭﺍﻟﻌﺎﺯﻝ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﺗﺮﻛﻴﺐ‬
-‫ﺍﶈﻴﻄﺔ‬ ‫ﺍﳊﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬
-‫ﺍﻟﻜﺒﻞ‬ ‫ﺗﻨﻔﻴﺬ‬ ‫ﻃﺮﻳﻘﺔ‬
-‫ﺗﺄﺛﲑ‬‫ﺍﻟﺪﺍﺭﺍﺕ‬)‫ﺍﻟﻜﺒﻼﺕ‬(‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﲜﺎﻧﺐ‬ ‫ﺍﳌﻨﻔﺬﺓ‬
I2:‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﻋﻨﺪﻩ‬ ‫ﻳﻔﺼﻞ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻟﺘﻴﺎﺭ‬)‫ﺍﻟﻔﺎﺻﻤﺔ‬ ‫ﺍﻧﺼﻬﺎﺭ‬ ‫ﻳﺴﺒﺐ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﺃﻭ‬.(
Isc:‫ﺍﻷﻃﻮﺍﺭ‬ ‫ﺍﻟﺜﻼﺛﻲ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬
ISCB:‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬ ‫ﺍﻷﻃﻮﺍﺭ‬ ‫ﺍﻟﺜﻼﺛﻲ‬ ‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬
‫ﺍﻟﺸﻜﻞ‬ ‫ّﻦ‬‫ﻴ‬‫ﻳﺒ‬)١(‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻟﻌﻼﻗﺔ‬ ‫ﹰ‬‫ﺎ‬‫ﺗﻮﺿﻴﺤ‬)‫ﺍﻟﻔﺎﺻﻤﺔ‬ ‫ﺃﻭ‬ ‫ﺍﻟﻘﺎﻃﻊ‬(‫ﺑﺒﻌﺾ‬ ‫ﺑﻌﻀﻬﺎ‬

5. ٥ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﻟﺸﻜﻞ‬(1)
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻋﻼﻗﺔ‬)‫ﺍﻟﻔﺎﺻﻤﺔ‬ ‫ﺃﻭ‬ ‫ﺍﻟﻘﺎﻃﻊ‬(‫ﺑﺒﻌﺾ‬ ‫ﺑﻌﻀﻬﺎ‬
ISC
In
‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬
‫ﺍﻟﺜﻼﺛﻲ‬ ‫ﺍﻻﲰﻲ‬
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬
‫ﺍﻟﻔﺼﻞ‬ ‫ﺗﻴﺎﺭ‬
I2
‫ﺍﻟﺘﻘﻠﻴﺪﻱ‬
‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬In‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﺃﻭ‬‫ﺍﳌﻮﻟﻒ‬
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﻋﻠﻴﻪ‬Ir, IrIn ≤
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬
I2
ISCB
1.45 IZ
1.45
× IZ
‫اﻟﺪارة‬ ‫ﻧﺎﻗﻞ‬
‫ﺍﳊﻤﻞ‬ ‫ﺗﻴﺎﺭ‬
‫ﺍﻷﻋﻈﻤﻲ‬
‫ﺍﳌﺴﻤﻮﺡ‬
‫ﺍﳊﻤﻞ‬ ‫ﺗﻴﺎﺭ‬
‫ﺍﻷﻋﻈﻤﻲ‬
‫اﻷﺣﻤﺎل‬
IB
IZ
‫ﺍﳌﻌﺎﺩﻟـﺔ‬ ‫ﲢﻘﻴﻖ‬ ‫ﻳﻌﺘﱪ‬)٢(‫ﺗﺘﺠﺎﻭﺏ‬ ‫ﻻ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳـﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﻷﻥ‬ ،‫ﹰ‬‫ﺎ‬‫ﺿﺮﻭﺭﻳـ‬ ‫ﹰ‬‫ﺎ‬‫ﺷﺮﻃ‬
‫ﹰ‬‫ﺎ‬‫ﲤﺎﻣ‬ ‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﻋﻨﺪ‬.‫ﻗﺎﺩﺭﺓ‬ ‫ﺗﻜـﻮﻥ‬ ‫ﺃﻥ‬ ‫ﳚﺐ‬ ‫ﺍﻷﺟﻬﺰﺓ‬ ‫ﻫﺬﻩ‬ ‫ﺃﻥ‬ ‫ﺍﻟﻮﺍﺿـﺢ‬ ‫ﻣﻦ‬ ‫ﻳﺒﺪﻭ‬ ‫ﺍﳊﻘﻴﻘﺔ‬ ‫ﻭﰲ‬
‫ﺩ‬ ‫ﺍﺯﺩﻳﺎﺩ‬ ‫ﻗﺒﻞ‬ ‫ﻓﻘﻂ‬ ‫ﺗﺘﺠﺎﻭﺏ‬ ‫ﺃﻥ‬ ‫ﻭﳚﺐ‬ ،‫ﺑﺎﺳﺘﻤﺮﺍﺭ‬ ‫ﺍﻻﲰﻲ‬ ‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﲢﻤﻞ‬ ‫ﻋﻠﻰ‬‫ﺍﻟﻜﺒﻞ‬ ‫ﺣﺮﺍﺭﺓ‬ ‫ﺭﺟﺔ‬.‫ﺇﻥ‬
‫ﺍﳌﺼﻐﺮﺓ‬ ‫ﻟﻠﻘﻮﺍﻃﻊ‬ ‫ﺍﻟﻔﺼﻞ‬ ‫ﻋﺎﻣﻞ‬MCB‫ﻭﻓﻮﺍﺻﻢ‬‫ﺍﻟـ‬HRCHigh Rupturing Capcity‫ﻳﺴﺎﻭﻱ‬
)‫ﻣﻦ‬ ‫ﺃﻗﻞ‬ ‫ﺃﻭ‬(١٫٤٥‫ﺍﻟﻌﻼﻗـﺔ‬ ‫ﲢﻘﻴﻖ‬ ‫ﺑﻐﻴﺔ‬ ‫ﻟﻠﺤﻤﺎﻳﺔ‬ ‫ﺍﳉﻬﺎﺯﻳﻦ‬ ‫ﻫﺬﻳﻦ‬ ‫ﻣﻦ‬ ّ‫ﻱ‬‫ﺃ‬ ‫ُﺨﺪﻡ‬‫ﺘ‬‫ﺍﺳ‬ ‫ﻓﺈﺫﺍ‬ ،)١(،‫ﻓﺈﻥ‬
‫ﺍﻟﻌﻼﻗﺔ‬)٢(‫ﻭﺍﺧﺘﻴﺎﺭ‬ ‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﳌﻘﻄـﻊ‬ ‫ﺍﳍﻨﺪﺳﻲ‬ ‫ﺍﻟﺘﺼﻤﻴﻢ‬ ‫ﺇﻥ‬ ‫ﺃﻱ‬ ،‫ﹰ‬‫ﺎ‬‫ﺿﻤﻨ‬ ‫ﳏﻘﻘﺔ‬ ‫ﺗﻜﻮﻥ‬‫ﺟﻬﺎﺯ‬
‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﲢﻘﻴﻖ‬ ‫ﺃﺳﺎﺱ‬ ‫ﻋﻠﻰ‬ ‫ﳚﺮﻱ‬ ‫ﻟـﻪ‬ ‫ﺍﳊﻤـﺎﻳﺔ‬)١(‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﺃﻣﺎ‬ ،)٢(‫ﺟﻬﺎﺯ‬ ‫ﻣﻮﺍﺻﻔﺎﺕ‬ ‫ﰲ‬ ‫ﻓﺘﺘﺤﻘﻖ‬
‫ﺍﳊﻤﺎﻳﺔ‬.
‫ﻭﻋﻨﺪ‬ ،‫ﺩﺍﺭﺓ‬ ‫ﻛﻞ‬ ‫ﺑﺪﺍﻳﺔ‬ ‫ﻋﻨﺪ‬ ،‫ﺍﻟﻜﻬﺮﺑﺎﺋﻴـﺔ‬ ‫ﻭﺍﻟﻘﻮﺍﻃﻊ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺗﺮﻛﺐ‬‫ﻓﻴﻬﺎ‬ ‫ّﺮ‬‫ﻴ‬‫ﻳﺘﻐ‬ ‫ﻧﻘﻄـﺔ‬ ‫ﻛﻞ‬
‫ﻟﻠﺤﺎﻻ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﲪﺎﻳـﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺗﺮﻛﻴﺐ‬ ‫ﻋﺪﻡ‬ ‫ﻭﳚﺐ‬ ،‫ﺍﻟﻨﺎﻗـﻞ‬ ‫ﻣﻘﻄﻊ‬‫ﻳﺸﻜﻞ‬ ‫ﺍﻟﱵ‬ ‫ﺕ‬
‫ﺍﳊﺎﻻﺕ‬ ‫ﻫﺬﻩ‬ ‫ﻭﻣﻦ‬ ، ‫ﻋﻠﻴﻬﺎ‬ ‫ﹰ‬‫ﺍ‬‫ﺧﻄﺮ‬ ‫ﻋﻨﻬﺎ‬ ‫ﺍﻟﻜﻬﺮﺑﺎﺋﻴﺔ‬ ‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﺍﻧﻘﻄﺎﻉ‬:
‗‫ﺩﺍﺭﺍﺕ‬‫ﺍﻟﺪﻭﺍﺭﺓ‬ ‫ﺍﻵﻻﺕ‬ ‫ﺷﺤﻦ‬.
‗‫ﺩﺍﺭﺍﺕ‬‫ﺍﻟﺮﻭﺍﻓﻊ‬.
‗‫ﺩﺍﺭﺍﺕ‬‫ﺍﻹﻃﻼﻕ‬ ‫ﻭﺷﺎﺋﻊ‬ ‫ﺗﻐﺬﻳﺔ‬Solenoids.
‗‫ﺍﻟﺪﺍﺭﺍﺕ‬‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﶈﻮﻻﺕ‬ ‫ﺍﻟﺜﺎﻧﻮﻳﺔ‬

6. ٦ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‗‫ﺩﺍﺭﺍﺕ‬‫ﺍﳊﻤﺎﻳﺔ‬Safety.
‫ﺍﻷﺭﻗﺎﻡ‬ ‫ﺫﺍﺕ‬ ‫ﺍﳉﺪﺍﻭﻝ‬ ‫ﺗﺒﲔ‬)١(‫ﺇﱃ‬)٦(،‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ،‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﺇﺣﺪﻯ‬ ‫ﻣﻦ‬ ‫ﺍﳌﻌﺪﺓ‬
‫ﻟﻠﻜﺒﻼﺕ‬‫ﺍﻟﺘﺎﻟﻴﺔ‬ ‫ﺍﻻﻓﺘﺮﺍﺿﻴﺔ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﻋﻨﺪ‬:
–‫ﺍﶈﻴﻄﺔ‬ ‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﺣﺮﺍﺭﺓ‬35º C.
–‫ﺍﶈﻴﻂ‬ ‫ﺍﳍﻮﺍﺀ‬ ‫ﺣﺮﺍﺭﺓ‬º C٤٠.
–‫ﺍﻷﺭﺽ‬ ‫ﰲ‬ ‫ﺍﳌﺪﻓﻮﻥ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻋﻤﻖ‬m٠٫٥.
–‫ﻟﻠﺘﺮﺑﺔ‬ ‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﺍﳌﻘﺎﻭﻣﺔ‬km / w١٫٢.
–‫ﺍﳌﺒﺎﺷﺮﺓ‬ ‫ﺍﻟﺸﻤﺲ‬ ‫ﻷﺷﻌﺔ‬ ‫ﺍﻟﺘﻌﺮﺽ‬ ‫ﻣﻦ‬ ‫ﳏﻤﻴﺔ‬ ‫ﺍﳍﻮﺍﺀ‬ ‫ﰲ‬ ‫ﺍﳌﻨﻔﺬﺓ‬ ‫ﺍﻟﻜﺒﻼﺕ‬.
–‫ﺑﻌﺾ‬ ‫ﺟﺎﻧﺐ‬ ‫ﺇﱃ‬ ‫ﺑﻌﻀﻬﺎ‬ ‫ﺍﳌﻨﻔﺬﺓ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺍﻷﺣﺎﺩﻳﺔ‬ ‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﺑﲔ‬ ‫ﺍﳌﺴﺎﻓﺔ‬flat‫ﺍﻟﻜﺒﻞ‬ ‫ﻗﻄﺮ‬ ‫ﺗﻌﺎﺩﻝ‬
–‫ﻟﻜﺒﻞ‬ ‫ﹰ‬‫ﺎ‬‫ﺃﻳﻀ‬ ‫َﺪﺓ‬‫ﻤ‬‫ﻣﻌﺘ‬ ‫ﻭﻫﻲ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺛﻼﺛﻲ‬ ‫ﻛﺒﻞ‬ ‫ﺃﺳﺎﺱ‬ ‫ﻋﻠﻰ‬ ‫ﻣﺪﺭﻭﺳﺔ‬ ‫ﺍﳊﺴﺎﺑﺎﺕ‬‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺭﺑﺎﻋﻲ‬.
–‫ﻳﻌﺎﺩﻝ‬ ‫ﻟﻸﻧﺒﻮﺏ‬ ‫ﺍﻟﺪﺍﺧﻠﻲ‬ ‫ﺍﻟﻘﻄﺮ‬ ‫ﻓﺈﻥ‬ ‫ﺃﻧﺎﺑﻴﺐ‬ ‫ﺿﻤﻦ‬ ‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﺗﻨﻔﻴﺬ‬ ‫ﻋﻨﺪ‬١٫٥‫ﻗﻄﺮ‬ ‫ﻣﻦ‬ ‫ﻣﺮﺓ‬
‫ﺍﻟﻜﺒﻞ‬.
–‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻗﻴﻢ‬‫ﻟﻠﻜﺒﻼﺕ‬‫ﺍﻟـ‬ ‫ﻟﻨﻈﺎﻡ‬ ‫ﹰ‬‫ﺎ‬‫ﻭﻓﻘ‬ ‫ﳏﺴﻮﺑﺔ‬١٩٨٢IEC287,.
‫ﺍ‬ ‫ﺍﻻﻓﺘﺮﺍﺿﻴﺔ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﻋﻦ‬ ‫ﺍﻟﻔﻌﻠﻴﺔ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﺍﺧﺘﻠﻔﺖ‬ ‫ﺇﺫﺍ‬ ‫ﺃﻣﺎ‬‫ﳚﺐ‬ ‫ﻓﻌﻨﺪﺋﺬ‬ ‫ﹰ‬‫ﺎ‬‫ﺁﻧﻔ‬ ‫ﳌﺬﻛﻮﺭﺓ‬
‫ﰲ‬ ‫ﻣﺪﺭﺟﺔ‬ ‫ﺍﻟﻌﻮﺍﻣﻞ‬ ‫ﻭﻫﺬﻩ‬ ،‫ﺍﳉﺪﻳﺪﺓ‬ ‫ﺍﻟﻈﺮﻭﻑ‬ ‫ﻣﻊ‬ ‫ﺗﺘﻨﺎﺳﺐ‬ ‫ﺗﺼﺤﻴﺢ‬ ‫ﻋﻮﺍﻣﻞ‬ ‫ﺃﺧﺬ‬‫ﺫﺍﺕ‬ ‫ﺍﳉﺪﺍﻭﻝ‬
‫ﺍﻷﺭﻗﺎﻡ‬)٧(‫ﺇﱃ‬)١٦.(

7. ٧ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺭﻗﻢ‬ ‫ﺍﳉﺪﻭﻝ‬)١(
Current carrying capacity
Single core cables with copper conductor,
PVC 70 ° C Insulated and PVC sheathed, 0.6/1 K V
‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻗﻴﻢ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺃﺣﺎﺩﻳﺔ‬ ‫ﳓﺎﺳﻴﺔ‬PVC
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬70º C‫ﺑﺎﻟـ‬ ‫ﹼﻔﺔ‬‫ﻠ‬‫ﻭﻣﻐ‬PVC،‫ﺗﻮﺗﺮ‬/1 kv٠,٦

8. ٨ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺭﻗﻢ‬ ‫ﺟﺪﻭﻝ‬)٢(
Current carrying capacity
Three and four core cables with copper conductor,
PVC 70 ° C Insulated and PVC sheathed, 0.6/1 K V
‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻗﻴﻢ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﻭﺭﺑﺎﻋﻴﺔ‬ ‫ﺛﻼﺛﻴﺔ‬ ‫ﳓﺎﺳﻴﺔ‬pvc
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬70º C‫ﺑﺎﻟـ‬ ‫ﹼﻔﺔ‬‫ﻠ‬‫ﻭﻣﻐ‬PVC‫ﺗﻮﺗﺮ‬ ،/1 kv٠٫٦

9. ٩ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(3)
Current carrying capacity
Single core cables with copper conductors,
PVC 85 ° C Insulated and PVC sheathed, 0.6/1 K V
‫ﻗﻴﻢ‬‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺃﺣﺎﺩﻳﺔ‬ ‫ﳓﺎﺳﻴﺔ‬PVC
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬85º C‫ﺑﺎﻟـ‬ ‫ﹼﻔﺔ‬‫ﻠ‬‫ﻭﻣﻐ‬PVC،‫ﺗﻮﺗﺮ‬/1 kv٠,٦

10. ١٠ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(4)
Current carrying capacity
Three and four core cables with copper conductors,
PVC 85 ° C Insulated and PVC sheathed, 0.6/1 K V
‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻗﻴﻢ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﻭﺭﺑﺎﻋﻴﺔ‬ ‫ﺛﻼﺛﻴﺔ‬ ‫ﳓﺎﺳﻴﺔ‬PVC
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬85º C‫ﺑﺎﻟـ‬ ‫ﹼﻔﺔ‬‫ﻠ‬‫ﻭﻣﻐ‬PVC،‫ﺗﻮﺗﺮ‬/1 kv٠,٦

11. ١١ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺭﻗﻢ‬ ‫ﺍﳉﺪﻭﻝ‬(5)
Current carrying capacity
Single core cables with copper conductors,
of XLPE Insulated and PVC sheathed, 0.6/1 K V
‫ﻗﻴﻢ‬‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺃﺣﺎﺩﻳﺔ‬ ‫ﳓﺎﺳﻴﺔ‬XLPE
‫ﺑﺎﻟـ‬ ‫ﻭﻣﻐﻠﻔﺔ‬PVC،‫ﺗﻮﺗﺮ‬/1 kv٠,٦

12. ١٢ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(6)
Current carrying capacity
Three and four core cables with copper conductors,
XLPE Insulated and PVC sheathed, 0.6/1 K V
‫ﻗﻴﻢ‬‫ﺍﻟﺘﺤﻤﻴﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬‫ﻟﻜﺒﻼﺕ‬‫ﺑﺎﻟـ‬ ‫ﻣﻌﺰﻭﻟﺔ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﻭﺭﺑﺎﻋﻴﺔ‬ ‫ﺛﻼﺛﻴﺔ‬ ‫ﳓﺎﺳﻴﺔ‬XLPE
‫ﺑﺎﻟـ‬ ‫ﻭﻣﻐﻠﻔﺔ‬PVC،‫ﺗﻮﺗﺮ‬/1 kv٠,٦

13. ١٣ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(7)
Cables laid direct in ground
Rating factors for variation in ground temperature
‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﺍﺧﺘﻼﻑ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﺎﻣﻞ‬
‫ﻟﻜﺒﻼﺕ‬‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﰲ‬ ‫ﻣﺒﺎﺷﺮﺓ‬ ‫ﻣﻨﻔﺬﺓ‬
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(8)
Cables laid direct in ground
Rating factors for variation in depth of burial
(to centre of cable in the trefoil group of cables)
‫ﻋﻦ‬ ‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﰲ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻋﻤﻖ‬ ‫ﺍﺯﺩﻳﺎﺩ‬ ‫ﻟﺪﻯ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﺎﻣﻞ‬0.5m
)‫ﺠﻤﻟﻤﻮﻋﺔ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻣﺮﻛﺰ‬ ‫ﺇﱃ‬ ‫ﺍﻟﻘﻴﺎﺱ‬ ‫ﳚﺮﻱ‬‫ﻛﺒﻼﺕ‬‫ﺷﻜﻞ‬ ‫ﻋﻠﻰ‬(

14. ١٤ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(9)
Cables laid direct in ground
Rating factors for variation in thermal resitivity of soil (average values)
‫ﻟﻠﺘﺮﺑﺔ‬ ‫ﺍﻟﻨﻮﻋﻴﺔ‬ ‫ﺍﳌﻘﺎﻭﻣﺔ‬ ‫ﺍﺧﺘﻼﻑ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﺟﺪﻭﻝ‬
‫ﺍﳉﺪﻭﻝ‬‫ﺭﻗﻢ‬(11)
Cables installed in air
Group rating factors for multicore cables in flat formation
‫ﺗﻨﻔﻴﺬ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﺟﺪﻭﻝ‬‫ﻛﺒﻼﺕ‬‫ﺍﳍﻮﺍﺀ‬ ‫ﰲ‬ ‫ﻣﺘﺠﺎﻭﺭﺓ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﻣﺘﻌﺪﺩﺓ‬Flat

15. ١٥ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

16. ١٦ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

17. ١٧ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺑ‬ ‫اﻟﺤﻤﺎﻳـﺔ‬ ‫ﺟﻬﺎز‬ ‫وﺗﻴﺎر‬ ‫اﻟﻜﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻻﺧﺘﻴﺎر‬ ‫أﺧﺮى‬ ‫ﺷﺮآﺔ‬ ‫ﻣﻦ‬ ‫ﺟﺪاول‬ ‫وهﺬﻩ‬‫ﺿﻤﻦ‬ ‫اﻟﺤﻤﻞ‬ ‫ﺗﻴﺎر‬ ‫ﺪﻻﻟﺔ‬
‫ﻣﺨﺘﻠﻔﺔ‬ ‫ﻓﺮﺿﻴﺎت‬‫ﻣﻊ‬‫اﻟﺨﺎﺻﺔ‬ ‫اﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﻮاﻣﻞ‬ ‫ﺟﺪاول‬‫ﺑﻬﺎ‬‫ﻳﻠﻲ‬ ‫ﻓﻴﻤﺎ‬ ‫ﻣﺒﻴﻦ‬ ‫هﻮ‬ ‫آﻤﺎ‬:
‫ﺟﺪﻭﻝ‬)١٧(
‫ﻗﻴﻢ‬‫ﺗﻴﺎﺭﺍﻟﺘﺤﻤﻴﻞ‬‫ﻟﻠﻜﺒﻼﺕ‬‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻭﺃﺟﻬﺰﺓ‬ ‫ﺍﳌﻌﺰﻭﻟﺔ‬
‫ﺍﻟـ‬ ‫ﻟﻨﻈﺎﻡ‬ ‫ﹰ‬‫ﺎ‬‫ﻭﻓﻘ‬٥٧١٠٠DIN‫ﺃﻋﻈﻤﻴﺔ‬ ‫ﳏﻴﻄﻴﺔ‬ ‫ﺣﺮﺍﺭﺓ‬ ‫ﻋﻨﺪ‬° C٣٠

18. ١٨ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

19. ١٩ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳉﺪﻭﻝ‬ ‫ﰲ‬ ‫ﺍﳌﺬﻛﻮﺭﺓ‬ ‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﺗﻨﻔﻴﺬ‬ ‫ﺣﺎﻝ‬ ‫ﰲ‬)١٨(‫ﻃﺒﻘﺎﺕ‬ ‫ﻋﺪﺓ‬ ‫ﻋﻠﻰ‬‫ﻳﺆﺧﺪ‬‫ﺍﻟﺘﺎﱄ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﺎﻣﻞ‬:
٣-‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺍﺧﺘﻴﺎﺭ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﳌﺘﺴﺎﻭﻱ‬ ‫ﺍﻟﻜﻤﻮﻥ‬ ‫ﻭﻧﺎﻗﻞ‬:
‫ﺍﳉﺪﻭﻝ‬)٢١(‫ﻟﻨﺎﻗﻞ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﻣﻘﺎﻃﻊ‬ ‫ﺣﺎﻟﺔ‬ ‫ﰲ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﳌﻘﻄﻊ‬ ‫ﺍﻷﺩﱏ‬ ‫ﺍﳊﺪ‬ ‫ﻳﺒﲔ‬‫ﺍﳊﺎﻟﺘﲔ‬ ‫ﰲ‬ ‫ﻭﺫﻟﻚ‬ ‫ﺍﻟﻄﻮﺭ‬:
-‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻳﻜﻮﻥ‬ ‫ﻋﻨﺪﻣﺎ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﳊﻴﺎﺩﻱ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻋﻦ‬ ‫ﹰ‬‫ﻼ‬‫ﻣﺴﺘﻘ‬
‫ﻟﻪ‬ ‫ﻭﻳﺮﻣﺰ‬‫ﺑـ‬PE (Protective Earth)
-‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻳﻜﻮﻥ‬ ‫ﻋﻨﺪﻣﺎ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﳊﻴﺎﺩﻱ‬ ‫ﻧﺎﻗﻞ‬ ‫ﹰ‬‫ﺎ‬‫ﺃﻳﻀ‬ ‫ﻳﻀﻢ‬
‫ﻟﻪ‬ ‫ﻭﻳﺮﻣﺰ‬‫ﺑـ‬PEN (Protective Earth & Neutral )

20. ٢٠ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺟﺪﻭﻝ‬)٢١(
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﳌﻘﻄﻊ‬ ‫ﺍﻷﺩﱏ‬ ‫ﺍﳊﺪ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﻟـ‬ ‫ﻟﻨﻈﺎﻡ‬ ‫ﹰ‬‫ﺎ‬‫ﻭﻓﻘ‬٤٥٠VDE 100 Part
*‫ﺍﻟﻄﻮﺭ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻳﻜﻮﻥ‬ ‫ﻋﻨﺪﻣﺎ‬mm²٩٥‫ﻣﻌﺰﻭﻝ‬ ‫ﻏﲑ‬ ‫ﲪﺎﻳﺔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﺑﺎﺳﺘﺨﺪﺍﻡ‬ ‫ﻳﻨﺼﺢ‬ ،‫ﺃﻛﱪ‬ ‫ﺃﻭ‬
‫ﺍﳌﺘﺴﺎﻭﻱ‬ ‫ﺍﻟﻜﻤﻮﻥ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺃﻣﺎ‬)‫ﻣﻊ‬ ‫ﺍﳌﻌﺪﻧﻴﺔ‬ ‫ﺍﻷﺟﺰﺍﺀ‬ ‫ﺭﺑﻂ‬ ‫ﻧﺎﻗﻞ‬‫ﺑﺎﺳﺒﺎﺭ‬‫ﺍﻟﺘﺄﺭﻳﺾ‬(
potential equalization bonding‫ﻳﻠﻲ‬ ‫ﻛﻤﺎ‬ ‫ﻓﻴﺤﺪﺩ‬:
-‫ﺍﻟﺮﺋﻴﺴﻲ‬ ‫ﺍﻟﺮﺑﻂ‬ ‫ﻋﻨﺪ‬:0.5 x‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻣﻘﻄﻊ‬)‫ﺍﻷﺭﺿﻲ‬(‫ﺍﻟﺮﺋﻴﺴﻲ‬‫ﻋﻦ‬ ‫ﻳﻘﻞ‬ ‫ﻻ‬ ‫ﻭﲝﻴﺚ‬6 mm2
‫ﳓﺎﺱ‬
-‫ﺍﻟﺮﺋﻴﺴﻲ‬ ‫ﻏﲑ‬ ‫ﺍﻟﺮﺑﻂ‬ ‫ﻋﻨﺪ‬)‫ﻋﻦ‬ ‫ﻳﻘﻞ‬ ‫ﻻ‬ ‫ﻭﲝﻴﺚ‬2.5 mm 2
‫ﻋﻦ‬ ‫ﻳﻘﻞ‬ ‫ﻭﻻ‬ ‫ﻣﻴﻜﺎﻧﻴﻜﻴﺔ‬ ‫ﲪﺎﻳﺔ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﻨﺪ‬ ‫ﳓﺎﺱ‬
4 mm 2
‫ﻣﻴﻜﺎﻧﻴﻜﻴﺔ‬ ‫ﲪﺎﻳﺔ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﺪﻡ‬ ‫ﻋﻨﺪ‬ ‫ﳓﺎﺱ‬:(
‫ﻧﺎﻗﻠﲔ‬ ‫ﺟﺰﺃﻳﻦ‬ ‫ﺑﲔ‬ ‫ﺭﺑﻂ‬:1 x‫ﻷﺭﺿﻲ‬ ‫ﺍﻷﺻﻐﺮ‬ ‫ﺍﳌﻘﻄﻊ‬‫ﺍﳉﺰﺃﻳﻦ‬ ‫ﺃﺣﺪ‬
‫ﺧﺎﺭﺟﻲ‬ ‫ﻭﺟﺰﺀ‬ ‫ﺁﻟﺔ‬ ‫ﻣﻦ‬ ‫ﻧﺎﻗﻞ‬ ‫ﺟﺰﺀ‬ ‫ﺑﲔ‬ ‫ﺭﺑﻂ‬:0.5 x‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻣﻘﻄﻊ‬)‫ﺍﻷﺭﺿﻲ‬(

21. ٢١ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
٤-‫ﺍﻟﻘﺼﺮ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳﺔ‬:
‫ﺍ‬ ‫ﺃﻧﻮﺍﻉ‬ ‫ﻭﺃﺳﻮﺃ‬ ‫ﺃﺧﻄﺮ‬ ‫ﻫﻮ‬ ‫ﺍﳌﺘﻨﺎﻇﺮ‬ ‫ﺍﻟﻄﻮﺭ‬ ‫ﺛﻼﺛﻲ‬ ‫ﻟﻌﻄﻞ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻳﻌﺘﱪ‬‫ﲢﺪﺙ‬ ‫ﺃﻥ‬ ‫ﳝﻜﻦ‬ ‫ﺍﻟﱵ‬ ‫ﻷﻋﻄﺎﻝ‬
‫ﺣﺪﻭﺩ‬ ‫ﺿﻤﻦ‬ ‫ﺍﻟﻨﺘﺎﺋﺞ‬ ‫ﺗﻜﻮﻥ‬ ‫ﻟﻜﻲ‬ ‫ﻋﻠﻴﻬﺎ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﻋﺎﺩﺓ‬ ‫ﳚﺮﻱ‬ ‫ﺍﻟﱵ‬ ‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﰲ‬‫ﻭﺑﻌﺪ‬ ،‫ﻛﺎﻓﻴﺔ‬ ‫ﺃﻣﺎﻥ‬
‫ﺃﺟﻬﺰﺓ‬ ‫ﻣﻮﺍﺻﻔﺎﺕ‬ ‫ﱠﺩ‬‫ﺪ‬‫ُﺤ‬‫ﺗ‬ ‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﻧﻘﺎﻁ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬‫ﺍﻟﻼﺯﻣﺔ‬ ‫ﺍﳊﻤﺎﻳﺔ‬.
‫ﻣﻬﻤﻠﺔ‬ ‫ﳑﺎﻧﻌﺔ‬ ‫ﺫﻱ‬ ‫ﻋﻄﻞ‬ ‫ﻧﺘﻴﺠﺔ‬ ‫ﺍﻟﺘﻴﺎﺭ‬ ‫ﻗﻴﻤﺔ‬ ‫ﰲ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﺑﺄﻧﻪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ّﻑ‬‫ﺮ‬‫ﻳﻌ‬‫ﺑﲔ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﻟﻠﺘﻴﺎﺭ‬ ‫ﺍﳊﺎﻣﻠﺔ‬
‫ﻫﺬ‬ ‫ﻭﺗﻨﺸﺄ‬ ،‫ﺍﻟﻄﺒﻴﻌﻴﺔ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﻋﻨﺪ‬ ‫ﺟﻬﺪ‬ ‫ﻓﺮﻕ‬ ‫ﺑﻴﻨﻬﺎ‬ ‫ﻓﻴﻤﺎ‬ ‫ﻳﻮﺟﺪ‬ ‫ﺍﻟﱵ‬‫ﺍﻬﻧﻴﺎﺭ‬ ‫ﺑﺴﺒﺐ‬ ‫ﺍﻟﺰﻳﺎﺩﺓ‬ ‫ﻩ‬
‫ﺑﲔ‬ ‫ﺍﻟﻌﺎﺯﻝ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﻭ‬ ‫ﻟﻠﺘﻴﺎﺭ‬ ‫ﺍﳊﺎﻣﻠﺔ‬/‫ﺑﲔ‬ ‫ﺃﻭ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﺍﻷﺭﺿﻲ‬ ‫ﻭﺍﻟﻨﺎﻗﻞ‬ ‫ﻟﻠﺘﻴﺎﺭ‬ ‫ﺍﳊﺎﻣﻠﺔ‬.‫ﻫﺬﻩ‬ ‫ﺗﺆﺛﺮ‬ ‫ﻛﻤﺎ‬
‫ﳚ‬ ‫ﻟﻠﻘﺎﻃﻊ‬ ‫ﺍﻟﻔﺼﻞ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﻓﺈﻥ‬ ‫ﻟﺬﻟﻚ‬ ،‫ﺍﻟﺮﺑﻂ‬ ‫ﻭﻧﻘﺎﻁ‬ ‫ﺍﻟﻮﺻﻼﺕ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻟﺰﻳﺎﺩﺓ‬‫ﻋﻠﻰ‬ ‫ﺗﺴﺎﻭﻱ‬ ‫ﺃﻥ‬ ‫ﺐ‬
‫ﺍﻟﻘﺎﻃﻊ‬ ‫ﺗﺮﻛﻴﺐ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺣﺪﻭﺛﻪ‬ ‫ﳝﻜﻦ‬ ‫ﻗﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺃﻋﻠﻰ‬ ‫ﺍﻷﻗﻞ‬.
‫ﺍﻟﻔﺼﻞ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﻣﻦ‬ ‫ﺃﻗﻞ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﳌﺘﻮﻗﻊ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻛﺎﻥ‬ ‫ﺇﺫﺍ‬‫ﻣﻦ‬ ‫ﻓﻠﻴﺲ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬
‫ﺍﻟﻘﺼﺮ‬ ‫ﺣﺴﺎﺑﺎﺕ‬ ‫ﺇﺟﺮﺍﺀ‬ ‫ﺍﻟﻀﺮﻭﺭﻱ‬،‫ﻣﻦ‬ ‫ﺍﳌﻐﺬﺍﺓ‬ ‫ﺍﻟﺼﻐﲑﺓ‬ ‫ﺍﻷﲪﺎﻝ‬ ‫ﻋﻠﻰ‬ ‫ﹰ‬‫ﺎ‬‫ﻋﻤﻠﻴ‬ ‫ﺍﳊﺎﻻﺕ‬ ‫ﻫﺬﻩ‬ ‫ﻭﺗﻨﻄﺒﻖ‬
‫ﺧﺎﺻﺔ‬ ‫ﺷﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﺗﻐﺬﻯ‬ ‫ﻛﺒﲑﺓ‬ ‫ﺃﲪﺎﻝ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﻨﺪ‬ ‫ﺃﻣﺎ‬ ، ‫ﺍﻟﻌﺎﻣﺔ‬ ‫ﺍﻟﺸﺒﻜﺔ‬‫ﻬﺑﺎ‬‫ﺇﺟﺮﺍﺀ‬ ‫ﻣﻦ‬ ‫ﺑﺪ‬ ‫ﻓﻼ‬ ،
‫ﺍﳊﺴﺎﺑﺎﺕ‬ ‫ﺑﻌﺾ‬.
‫ﺍﻟﺘﺎﻟﻴﺔ‬ ‫ﺑﺎﻟﻌﻮﺍﻣﻞ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻭﺗﺘﻌﻠﻖ‬:
-‫ﺍﳌﺘﻮﻗﻊ‬ ‫ﺍﻷﻋﻈﻤﻲ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬Prospective Short Circuit Current PSCC‫ﻣﻮﺍﻗﻊ‬ ‫ﻋﻨﺪ‬
‫ﺍﶈﻮﻻﺕ‬ ‫ﻣﻮﺍﻗﻊ‬ ‫ﻭﻋﻨﺪ‬ ‫ﺍﳊﻤﻞ‬ ‫ﻭﻋﻨﺪ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬.
-‫ﺍﻟﻘﺼﺮ‬ ‫ﺩﺍﺭﺓ‬ ‫ﻓﺼﻞ‬ ‫ﺃﺛﻨﺎﺀ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺗﺴﺘﻐﺮﻗﻪ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻟﺰﻣﻦ‬.
-‫ﳊﻤﺎﻳﺔ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺗﻨﺎﺳﺐ‬ ‫ﻣﻘﺪﺍﺭ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﳛﺪﺛﻬﺎ‬ ‫ﺍﻟﱵ‬ ‫ﱢﺑﺔ‬‫ﺮ‬‫ﺍﳌﺨ‬ ‫ﺍﻟﺘﺄﺛﲑﺍﺕ‬ ‫ﻣﻦ‬
-‫ﺍﻷﺳﺎﺳﻴﺔ‬ ‫ﻟﻠﺤﻤﺎﻳﺔ‬ ‫ﻣﺴﺎﻧﺪﺓ‬ ‫ﺇﺿﺎﻓﻴﺔ‬ ‫ﲪﺎﻳﺔ‬ ‫ﻭﺟﻮﺩ‬.
-‫ﺑﲔ‬ ‫ﺍﻟﺘﻤﻴﻴﺰ‬ ‫ﲢﻘﻴﻖ‬‫ﺍﳊﻤﺎﻳﺎﺕ‬.
‫ﻣﺪﺓ‬ ‫ﺧﻼﻝ‬ ‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﻋﻠﻰ‬ ‫ﺍﳌﻮﺻﻮﻟﺔ‬ ‫ﺍﻷﲪﺎﻝ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺃﺟﻬﺰﺓ‬ ‫ﺗﻔﺼﻞ‬ ‫ﺃﻥ‬ ‫ﻭﳚﺐ‬‫ﺍﻟﱵ‬ ‫ﺍﳌﺪﺓ‬ ‫ﻋﻠﻰ‬ ‫ﺗﺰﻳﺪ‬ ‫ﻻ‬
‫ﺍﳊﺪﻳﺔ‬ ‫ﺍﳊﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﺇﱃ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻭﺻﻮﻝ‬ ‫ﺇﱃ‬ ‫ﺗﺆﺩﻱ‬‫ﺍﳌﺴﻤﻮﺣﺔ‬‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻋﻠﻰ‬ ‫ﹰ‬‫ﺍ‬‫ﺧﻄﺮ‬ ‫ﻳﺸﻜﻞ‬ ‫ﻭﻫﺬﺍ‬ ،
‫ﻓﻴﻪ‬ ‫ﺍﳌﺘﻮﻟﺪﺓ‬ ‫ﺍﳌﻴﻜﺎﻧﻴﻜﻴﺔ‬ ‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﺍﻟﺘﺄﺛﲑﺍﺕ‬ ‫ﻧﺘﻴﺠﺔ‬.
‫ﺍﻟـ‬ ‫ﻗﻴﻤﺔ‬ ‫ﺗﺘﻌﻠﻖ‬PSCC‫ﻭﻳﺘﺤﺪﺩ‬ ، ‫ﺍﶈﻮﻝ‬ ‫ﻳﻘﺪﻣﻪ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﺑﺘﻮﺗﺮ‬ ‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﻧﻘﻄﺔ‬ ‫ﺃﻱ‬ ‫ﻋﻨﺪ‬
‫ﻭﺍﻟﺘﺠﻬ‬ ‫ﺍﻟﻮﺻﻼﺕ‬ ‫ﻭﳑﺎﻧﻌﺔ‬ ‫ﺍﶈﻮﻝ‬ ‫ﻣﻠﻔﺎﺕ‬ ‫ﳑﺎﻧﻌﺔ‬ ‫ﻗﻴﻢ‬ ‫ﲟﺠﻤﻮﻉ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺬﺍ‬‫ﺍﶈﻮﻝ‬ ‫ﺑﲔ‬ ‫ﺍﳌﺮﺑﻮﻃﺔ‬ ‫ﻴﺰﺍﺕ‬
‫ﻭﳉﻌﻞ‬ ‫ﺍﳊﺴﺎﺑﺎﺕ‬ ‫ﻟﺘﺴﻬﻴﻞ‬ ‫ﺍﻷﺧﲑﺓ‬ ‫ﺍﳌﻤﺎﻧﻌﺔ‬ ‫ﺇﳘﺎﻝ‬ ‫ﻭﳝﻜﻦ‬ ،‫ﺍﻟﻌﻄﻞ‬ ‫ﻭﻧﻘﻄﺔ‬‫ﺣﺪﻭﺩ‬ ‫ﺿﻤﻦ‬ ‫ﺍﻟﻨﺘﺎﺋﺞ‬
‫ﺃﻋﻠﻰ‬ ‫ﺃﻣﺎﻥ‬.

22. ٢٢ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺟﺪﺍﻭﻝ‬ ‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﺗﻘﺪﻡ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﳊﺴﺎﺏ‬ ‫ﺍﻟﻼﺯﻡ‬ ‫ﺍﻟﻮﻗﺖ‬ ‫ﻭﻟﺘﻮﻓﲑ‬‫ﻣﻘﺎﻭﻣﺔ‬ ‫ﻗﻴﻢ‬ ‫ﺗﻌﻄﻲ‬
‫ﺗﻌﻄ‬ ‫ﻣﻨﺤﻨﻴﺎﺕ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﻫﺬﻩ‬ ‫ﺗﻘﺪﻡ‬ ‫ﻭﻛﺬﻟﻚ‬ ،‫ﳐﺘﻠﻔﺔ‬ ‫ﻭﻣﻘﺎﻃﻊ‬ ‫ﻷﻃﻮﺍﻝ‬ ‫ﺍﻟﻜﺒﻼﺕ‬‫ﺍﻟـ‬ ‫ﻲ‬PSCC
‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﳌﻘﺎﻭﻣﺔ‬ ‫ﻣﻌﻴﻨﺔ‬ ‫ﻗﻴﻤﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻟﻠﻤﺤﻮﻻﺕ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﻷﺣﺠﺎﻡ‬.
1-4‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻟﺸﺒﻜﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺍﻟﺘﺎﻟﻴﺔ‬ ‫ﻟﻠﺨﻄﻮﺍﺕ‬ ‫ﹰ‬‫ﺎ‬‫ﻭﻓﻘ‬ ‫ﺫﻟﻚ‬ ‫ﳚﺮﻱ‬:
١-‫ﺍﻟﻌﻠﻮﻳﺔ‬ ‫ﻟﻠﺠﻬﺔ‬ ‫ﺍﻟﺪﺍﺭﺓ‬ ‫ﺃﺟﺰﺍﺀ‬ ‫ﻣﻘﺎﻭﻣﺎﺕ‬ ‫ﳎﻤﻮﻉ‬ ‫ﺣﺴﺎﺏ‬upstream‫ﻣﻦ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﻟﻨﻘﻄﺔ‬
‫ﺍﻟﻌﻼﻗﺔ‬:
٢-‫ﺍﻟﻌﻠﻮﻳﺔ‬ ‫ﻟﻠﺠﻬﺔ‬ ‫ﺍﻟﺪﺍﺭﺓ‬ ‫ﺃﺟﺰﺍﺀ‬ ‫ﻣﻔﺎﻋﻼﺕ‬ ‫ﳎﻤﻮﻉ‬ ‫ﺣﺴﺎﺏ‬upstream‫ﻣﻦ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﻟﻨﻘﻄﺔ‬
‫ﺍﻟﻌﻼﻗﺔ‬:
٣-‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﻣﻦ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﻭﻓﻖ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ُﺤﺴﺐ‬‫ﻴ‬‫ﻓ‬ ‫ﻣﺒﺎﺷﺮﺓ‬ ‫ﺍﶈﻮﻟﺔ‬ ‫ﳐﺎﺭﺝ‬ ‫ﻋﻨﺪ‬ ‫ﺃﻣﺎ‬:
‫ﺣﻴﺚ‬:
:‫ﺍﳋﻂ‬ ‫ﺗﻮﺗﺮ‬phase to phase‫ﻣﻔﺘﻮﺣﺔ‬ ‫ﻭﻫﻲ‬ ‫ﻟﻠﻤﺤﻮﻝ‬ ‫ﺍﻟﺜﺎﻧﻮﻳﺔ‬ ‫ﻟﻠﺪﺍﺭﺓ‬
:‫ﺍﳌﺮﺍﺩ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﻧﻘﻄﺔ‬ ‫ﺗﺴﺒﻖ‬ ‫ﺍﻟﱵ‬ ‫ﺍﻟﺪﺍﺭﺓ‬ ‫ﻷﺟﺰﺍﺀ‬ ‫ﻟﻠﻄﻮﺭ‬ ‫ﺍﻟﻜﻠﻴﺔ‬ ‫ﺍﳌﻤﺎﻧﻌﺔ‬
‫ﻋﻨﺪﻫﺎ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬.
:‫ﺍﶈﻮﻟﺔ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬
:‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺑﺎﻟﺸﺮﻛﺔ‬ ‫ﺧﺎﺹ‬ ‫ﺟﺪﻭﻝ‬ ‫ﻣﻦ‬ ‫ﻭﻳﺆﺧﺬ‬ ‫ﻟﻠﻤﺤﻮﻟﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻮﺗﺮ‬
‫ﺍﳉﺪﻭﻝ‬ ‫ﻭﻳﺒﲔ‬)٢٢(‫ﺍﻟﺘﻔﺼﻴﻠﻴﺔ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﻃﺮﻳﻘﺔ‬
[ ]Ω+++= mRRRRt ....321
tR
[ ]Ω+++= mt ....321 χχχχ
tχ
[ ]100
3 .
SC
sc
S
I KA
U U
= ×
[ ]2 2
t t tZ R mχ= + Ω
[ ]S kVA
scU
[ ]U V
3.
SC
t
U
I
Z
=

23. ٢٣ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳌﻔﺎﻋﻠﺔ‬‫ﺍﳌﻘﺎﻭﻣﺔ‬‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﺟﺰﺀ‬
‫ﺍﻟﻼﺣﻘﺔ‬ ‫ﺍﻟﺼﻔﺤﺔ‬ ‫ﻋﻠﻰ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﺗﺘﻤﺔ‬
:‫ﻭﻳﺆﺧﺬ‬ ‫ﻟﻠﻤﺤﻮﻟﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻮﺗﺮ‬
‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺑﺎﻟﺸﺮﻛﺔ‬ ‫ﺧﺎﺹ‬ ‫ﺟﺪﻭﻝ‬ ‫ﻣﻦ‬
:‫ﺍﶈﻮﻟﺔ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬
:‫ﺿﻴﺎﻋﺎﺕ‬‫ﻭﺗﺆﺧﺬ‬ ‫ﺍﻟﻨﺤﺎﺱ‬
‫ﺑﺎﻟﺸﺮﻛﺔ‬ ‫ﺧﺎﺹ‬ ‫ﺟﺪﻭﻝ‬ ‫ﻣﻦ‬
‫ﺍﻟﺼﺎﻧﻌﺔ‬
‫ﺍﶈﻮﻟﺔ‬
‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﺍﺳﺘﺨﺪﺍﻡ‬ ‫ﺃﻭ‬:
‫ﻭﺗﻌﻄﻰ‬Z1‫ﺑﺎﻟﻌﻼﻗﺔ‬:
‫ﺣﻴﺚ‬: :‫ﻭﺗﺆﺧﺬ‬ ‫ﻟﻠﺸﺒﻜﺔ‬ ‫ﺍﻟﻌﻠﻮﻳﺔ‬ ‫ﻟﻠﺠﻬﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬
‫ﺍﻟﺘﺎﱄ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﻭﺿﻊ‬ ‫ﳝﻜﻦ‬ ‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﺣﺴﺐ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﻭﺑﺈﺟﺮﺍﺀ‬:
Psc
[MVA]
٠٫٥٧٧٠٫٠٨٦٠٫٧١٠٫١٠٦٢٥٠
٠٫٢٨٣٠٫٠٤٣٠٫٣٥٣٠٫٥٣٥٠٠
‫ﺍﻟﻌﺎﱄ‬ ‫ﺍﳉﻬﺪ‬ ‫ﻟﻄﺮﻑ‬ ‫ﻭ‬ ‫ﻗﻴﻢ‬ ‫ﺟﺪﻭﻝ‬
‫ﺍﻟﻌﻠﻮﻳﺔ‬ ‫ﺍﳉﻬﺔ‬
UPSTREAM
)‫ﺍﻟﻌﺎﱄ‬ ‫ﺍﳉﻬﺪ‬ ‫ﻃﺮﻑ‬(
HV
[ ]Ωmχ[ ]ΩmR
3
1 1 1sin 10Z Zχ ϕ −
= ×
98.0sin =ϕ
1 10.15R χ=
3
11 10cos −
×= ϕZR
cos 0.15ϕ =
2
1
sc
U
Z
P
=
scP[ ]MVA500250÷
1Z
380U V=420U V=
[ ]mχ Ω[ ]R mΩ[ ]mχ Ω[ ]R mΩ
R χ
3
2
2
2 10−
×
×
=
S
UW
R c
2 2
2 2 2Z Rχ = −
2
2
100
SCU U
Z
S
= ×
%SCU
[ ]S kVA
[ ]cW W

24. ٢٤ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺟ‬ ‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﺑﻌﺾ‬ ‫ﺗﻘﺪﻡ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﳊﺴﺎﺏ‬ ‫ﺍﻟﻼﺯﻡ‬ ‫ﺍﻟﻮﻗﺖ‬ ‫ﻭﻟﺘﻮﻓﲑ‬‫ﻣﻘﺎﻭﻣﺔ‬ ‫ﻗﻴﻢ‬ ‫ﲢﻮﻱ‬ ‫ﺪﺍﻭﻝ‬
‫ﺍﻟـ‬ ‫ﺗﻌﻄﻲ‬ ‫ﲟﻨﺤﻴﺎﺕ‬ ‫ﻣﺮﻓﻘﺔ‬ ،‫ﳐﺘﻠﻔﺔ‬ ‫ﻭﻣﻘﺎﻃﻊ‬ ‫ﻷﻃﻮﺍﻝ‬ ‫ﺍﻟﻜﺒﻼﺕ‬PSCC‫ﻋﻨﺪ‬ ‫ﻟﻠﻤﺤﻮﻻﺕ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﻷﺣﺠﺎﻡ‬
‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﳌﻘﺎﻭﻣﺔ‬ ‫ﻣﻌﻴﻨﺔ‬ ‫ﻗﻴﻤﺔ‬.‫ﻭﺍﳉﺪﻭﻝ‬)٢٣(،‫ﳐﺘﻠﻔﺔ‬ ‫ﳌﻘﺎﻃﻊ‬ ‫ﺍﻷﺣﺎﺩﻳﺔ‬ ‫ﺍﻟﻨﺤﺎﺳﻴﺔ‬ ‫ﺍﻟﻜﺒﻼﺕ‬ ‫ﻣﻘﺎﻭﻣﺔ‬ ‫ﻳﻌﻄﻲ‬
‫ﻣ‬ ‫ﻛﻞ‬ ‫ﻣﻘﺎﻭﻣﺔ‬ ‫ﻷﺧﺬ‬ ‫ﻭﺫﻟﻚ‬ ‫ﺍﻟﻄﻮﺭ‬ ‫ﺃﺣﺎﺩﻳﺔ‬ ‫ﺷﺒﻜﺔ‬ ‫ﺣﺎﻟﺔ‬ ‫ﰲ‬ ‫ﺍﻟﻘﻴﻢ‬ ‫ﻫﺬﻩ‬ ‫ﻭﺗﻀﺎﻋﻒ‬‫ﻭﺍﳊﻴﺎﺩﻱ‬ ‫ﺍﻟﻄﻮﺭ‬ ‫ﻦ‬
‫ﺑﺎﳊﺴﺒﺎﻥ‬.‫ﺍﻟﺸﻜﻞ‬ ‫ﻭﻳﺒﲔ‬)٢(‫ﳝﻜﻦ‬ ‫ﺍﻟﺸﻜﻞ‬ ‫ﻫﺬﺍ‬ ‫ﻭﻣﻦ‬ ،‫ﻟﻠﻤﺤﻮﻻﺕ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﺑﺄﺣﺠﺎﻡ‬ ‫ﺍﳋﺎﺻﺔ‬ ‫ﺍﳌﻨﺤﻨﻴﺎﺕ‬
‫ﺍﶈﻮ‬ ‫ﻭﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻣﻘﺎﻭﻣﺔ‬ ‫ﻗﻴﻤﺔ‬ ‫ﲟﻌﺮﻓﺔ‬ ‫ﺍﳌﺘﻮﻗﻊ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺇﳚﺎﺩ‬‫ﻟﺔ‬.
Upstream of fault location
‫ﻣﻬﻤﻠﺔ‬‫ﺍﻟﻘﺎﻃﻊ‬
‫ﺣﺎﻟﺔ‬ ‫ﰲ‬L= 1m
0.15 0.18χ
50 60‫ﺍﻟﺘﺮﺩﺩ‬f[Hz]
‫ﺍﻟﺒﺎﺭﺍﺕ‬ ‫ﺑﲔ‬ ‫ﺍﳌﺴﺎﻓﺔ‬ ‫ﻣﻀﺎﻋﻔﺔ‬ ‫ﻋﻨﺪ‬
‫ﻗﻴﻤﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﳚﺐ‬χ‫ﲟﻘﺪﺍﺭ‬%١٠
‫ﻣﻘﻄﻊ‬‫ﺍﻟﺒﺎﺳﺒﺎﺭ‬
‫ﺍﻟﺒﺎﺳﺒﺎﺭ‬
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻭﺫﻟﻚ‬70 C°
[mm2]s:‫ﺍﻟﻜﺒﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺣﺎﻟﺔ‬ ‫ﰲ‬‫ﻛﺒﻼﺕ‬‫ﺛﻼﺛﻴﺔ‬:
‫ﺣﺎﻟﺔ‬ ‫ﰲ‬‫ﻛﺒﻼﺕ‬‫ﺃﺣﺎﺩﻳﺔ‬:
:‫ﺍﻟﻜﺒﻞ‬ ‫ﻃﻮﻝ‬
‫ﻣﻦ‬ ‫ﺃﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺣﺎﻟﺔ‬ ‫ﰲ‬
50 mm2
‫ﺇﳘﺎﻝ‬ ‫ﳝﻜﻦ‬χ‫ﺃﻭ‬
‫ﺍﻟﻘﻴﻢ‬ ‫ﺃﺧﺬ‬:
χ mΩ/m 0.08 .096
٦٠٥٠‫ﺍﻟﺘﺮﺩﺩ‬f[Hz]
‫ﺍﻟﻜﺒﻞ‬
‫ﻣﻼﺣﻈﺔ‬:
‫ﻣﺮﺑﻮﻃﺔ‬ ‫ﻛﻮﺍﺑﻞ‬ ‫ﻋﺪﺓ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﻨﺪ‬
‫ﻓﻴﺠﺐ‬ ‫ﺍﻟﻮﺍﺣﺪ‬ ‫ﻟﻠﻄﻮﺭ‬ ‫ﺍﻟﺘﻔﺮﻉ‬ ‫ﻋﻠﻰ‬
‫ﺍﳌﻘﺎﻭﻣﺔ‬ ‫ﺣﺴﺎﺏ‬/‫ﺍﳌﻔﺎﻋﻠﺔ‬‫ﺍﳌﻜﺎﻓﺌﺔ‬
‫ﹰ‬‫ﻼ‬‫ﻓﻤﺜ‬ ‫ﳍﺎ‬:‫ﺍﳌﻘﺎﻭﻣﺔ‬ ‫ﺗﻌﻄﻰ‬/‫ﺍﳌﻔﺎﻋﻠﺔ‬
‫ﺍﳌﻜﺎﻓﺌﺔ‬‫ﻟﻜﺒﻠﲔ‬‫ﻣﺮﺑﻮﻃﲔ‬‫ﹰ‬‫ﺎ‬‫ﺗﻔﺮﻋﻴ‬
‫ﺑﺎﻟﻌﻼﻗﺔ‬:
‫ﺍﳌﻔﺎﻋﻠﺔ‬‫ﺍﳌﻘﺎﻭﻣﺔ‬‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﺟﺰﺀ‬ [ ]Ωmχ[ ]ΩmR
L15.03 =χ
L2.03 =χ
[ ]L m
3
2
2
2
2
1
. /
45
22.3 . /
1
. /
27
37 . /
L
R
s
mm m
m mm m
mm m
m mm m
ρ
ρ
ρ
=
 = Ω 
 = Ω 
 = Ω 
 = Ω 
‫ﳓﺎﺱ‬
‫ﺃﳌﻨﻴﻮﻡ‬
1 2
3
1 2
χ χ
χ
χ χ
×
=
+
1 2
3
1 2
R R
R
R R
×
=
+
4
L
R
s
ρ= 2
50 5
80 5
100 5
s mm= ×
×
×
2
:s mm  
5 0R ≅ [ ]5 0.15 /X m pole= Ω

25. ٢٥ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

26. ٢٦ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳋﺎﺻﺔ‬ ‫ﺍﻟﱪﺍﻣﺞ‬ ‫ﻣﻦ‬ ‫ﻛﺜﲑ‬ ‫ﹰ‬‫ﺎ‬‫ﺣﺪﻳﺜ‬ ‫ﺗﻮﻓﺮ‬ ‫ﻭﻗﺪ‬Software‫ﻭﻣﻦ‬ ‫ﺍﳊﺴﺎﺑﺎﺕ؛‬ ‫ﻫﺬﻩ‬ ‫ﻹﺟﺮﺍﺀ‬ ‫ﻋﺎﳌﻴﺔ‬ ‫ﻟﺸﺮﻛﺎﺕ‬
‫ﺑﺮﻧﺎﻣﺞ‬ ‫ﺍﻟﱪﺍﻣﺞ‬ ‫ﻫﺬﻩ‬Ecodial‫ﺷﺮﻛﺔ‬ ‫ﺃﻧﺘﺠﺘﻪ‬ ‫ﺍﻟﺬﻱ‬GROUPE SCHNEIDER‫ﺍﻟﻔﺮﻧﺴﻴﺔ‬،‫ﻭﺑﺮﻧﺎﻣﺞ‬
DOCWIN‫ﺷﺮﻛﺔ‬ ‫ﺃﻧﺘﺠﺘﻪ‬ ‫ﺍﻟﺬﻱ‬ABB‫ﺍﻟﺴﻮﻳﺪﻳﺔ‬.
2-4‫ﲪﺎﻳﺔ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﺍﻟﻘﺼﺮ‬ ‫ﻣﻦ‬:
‫ﻭ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﻟﻠﺤﻤﺎﻳﺔ‬ ‫ﹰ‬‫ﺎ‬‫ﻣﺴﺘﺨﺪﻣ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﻳﻜﻮﻥ‬ ‫ﻋﻨﺪﻣﺎ‬‫ﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﻭﺗﻜﻮﻥ‬ ‫ﹰ‬‫ﺎ‬‫ﻣﻌ‬ ‫ﺍﻟﻘﺼﺮ‬
‫ﺍﻷﻧﻈﻤ‬ ‫ﻓﺈﻥ‬ ،‫ﺍﻟﺘﺮﻛﻴﺐ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﳌﺘﻮﻗﻊ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻣﻦ‬ ‫ﺃﻛﱪ‬ ‫ﻟﻪ‬ ‫ﺍﻟﻔﺼﻞ‬‫ﺃﻥ‬ ‫ﺑﺎﻓﺘﺮﺍﺽ‬ ‫ﺗﺴﻤﺢ‬ ‫ﺔ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﺍﻟﱵ‬
‫ﺍﻟﻘ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻣﻦ‬ ‫ﻛﺎﻑ‬ ‫ﺑﻘﺪﺭ‬ ‫ﳏﻤﻴﺔ‬ ، ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬ ‫ﺑﺎﻟﻨﺴﺒﺔ‬ ،‫ﺍﳊﻤﻞ‬ ‫ﺟﻬﺔ‬ ‫ﻣﻦ‬،‫ﺼﺮ‬‫ﻹﺟﺮﺍﺀ‬ ‫ﺣﺎﺟﺔ‬ ‫ﻭﻻ‬
‫ﺇﺿﺎﻓﻴﺔ‬ ‫ﺣﺴﺎﺑﺎﺕ‬،‫ﺯﻳ‬ ‫ﻗﻴﻤﺔ‬ ‫ﻣﻊ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻟﺘﻴﺎﺭ‬ ‫ﺍﻻﲰﻴﺔ‬ ‫ﺍﻟﻘﻴﻤﺔ‬ ‫ﺗﻨﺎﺳﺐ‬ ‫ﺳﺒﺒﻪ‬ ‫ﺍﻻﻓﺘﺮﺍﺽ‬ ‫ﻭﻫـﺬﺍ‬‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺎﺩﺓ‬
‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﳉﻬﺎﺯ‬.

27. ٢٧ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍ‬ ‫ﺃﻥ‬ ‫ﺍﻟﺘﺄﻛﺪ‬ ‫ﻓﻴﺠﺐ‬ ،‫ﺷﻚ‬ ‫ﻭﺟﻮﺩ‬ ‫ﺃﻭ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﻫﺬﻩ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﺪﻡ‬ ‫ﻋﻨﺪ‬ ‫ﺣﺎﻝ‬ ‫ﺃﻱ‬ ‫ﻋﻠﻰ‬‫ﺯﻣﻦ‬ ‫ﺧﻼﻝ‬ ‫ﻓﺼﻠﻪ‬ ‫ﺳﻴﺘﻢ‬ ‫ﻟﺘﻴﺎﺭ‬
‫ﺗﻀﻌ‬ ‫ﺍﻟﱵ‬ ‫ﺍﳊﺪﻳﺔ‬ ‫ﺍﻟﺪﺭﺟﺔ‬ ‫ﺇﱃ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﻭﺻﻮﻝ‬ ‫ﻋـﺪﻡ‬ ‫ﻳﻀﻤﻦ‬ ‫ﻗﺼﲑ‬‫ﺍﳌﻴﻜﺎﻧﻴﻜﻴﺔ‬ ‫ﺧﻮﺍﺻﻪ‬ ‫ﻒ‬.‫ﻭﳚﺮﻱ‬
‫ﺍﳌﻌﺎﺩﻟﺔ‬ ‫ﺑﺘﻄﺒﻴﻖ‬ ‫ﺫﻟﻚ‬‫ﺍﻷﺩﻳﺒﺎﺗﻴﺔ‬‫ﺍﻟﺘﺎﻟﻴﺔ‬:
‫ﺍﻟﻔﺼﻞ‬ ‫ﻗﺒﻞ‬ ‫ﺍﳌﺴﻤﻮﺡ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺩﺍﺭﺓ‬ ‫ﺍﺳﺘﻤﺮﺍﺭ‬ ‫ﺯﻣﻦ‬
‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬.
‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬.
‫ﺍﳉﺪﻭﻝ‬ ‫ﻣﻦ‬ ‫ﻳﺆﺧﺬ‬ ‫ﺛﺎﺑﺖ‬)٢٤(‫ﺍﳌﺴﺘﺨﺪﻣﺔ‬ ‫ﺍﻟﻌﺎﺯﻟﺔ‬ ‫ﻭﺍﳌﺎﺩﺓ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻧﻮﻉ‬ ‫ﻋﻠﻰ‬ ‫ﻗﻴﻤﺘﻪ‬ ‫ﻭﺗﻌﺘﻤﺪ‬.
‫ﺍﳌﻌﺎﺩﻟﺔ‬ ‫ﻫﺬﻩ‬ ‫ﺗﺴﺘﺨﺪﻡ‬‫ﻟﻠﻜﺒﻼﺕ‬‫ﻣﻦ‬ ‫ﺃﻛﱪ‬ ‫ﻣﻘﻄﻌﻬﺎ‬ ‫ﺍﻟﱵ‬mm2١٠‫ﻗﻴﻤﺘﻪ‬ ‫ﻓﺼﻞ‬ ‫ﻭﻟﺰﻣﻦ‬‫ﺍﻷﻋﻈﻤﻴﺔ‬sec٥.
‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﺍﻟﻄﺎﻗﺔ‬ ‫ﺃﻥ‬ ‫ﺍﻟﻄﺮﻳﻘﺔ‬ ‫ﻬﺑﺬﻩ‬ ‫ﻧﺘﺄﻛﺪ‬I2
t)‫ﺿﻴﺎﻉ‬ ‫ﻭﺟﻮﺩ‬ ‫ﻋﺪﻡ‬ ‫ﺍﻓﺘﺮﺍﺽ‬ ‫ﻣﻊ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﰲ‬ ‫ﺍﳌﺨﺰﻧﺔ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﻃﺎﻗﺔ‬
‫ﺣﺮﺍﺭﻱ‬(‫ﳝﺮﺭﻫﺎ‬ ‫ﺍﻟﱵ‬ ‫ﺍﳊﺮﺍﺭﻳﺔ‬ ‫ﺍﻟﻄﺎﻗﺔ‬ ‫ﻣﻦ‬ ‫ﺃﻛﱪ‬ ‫ﻫﻲ‬ ‫ﻣﺮﻭﺭﻫﺎ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻳﺘﺤﻤﻞ‬ ‫ﺍﻟﱵ‬‫ﻣﻦ‬ ‫ﳔﺘﺎﺭﻩ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻟﻘﺎﻃﻊ‬
‫ﻛﺎﺗﺎﻟﻮﻛﺎﺕ‬‫ﺍﳌﺼﻨﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺔ‬.
‫ﺯ‬ ‫ﺃﻭ‬ ‫ﺇﺑﺪﺍﻟﻪ‬ ‫ﻓﻴﺠﺐ‬ ‫ﹰ‬‫ﺍ‬‫ﺟﺪ‬ ‫ﺑﻄﻲﺀ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﻋﻤﻞ‬ ‫ﺃﻥ‬ ‫ﺍﳌﻌﺎﺩﻟﺔ‬ ‫ﺑﻴﻨﺖ‬ ‫ﺇﺫﺍ‬‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻳﺎﺩﺓ‬،‫ﻣﻦ‬ ‫ﻭﻟﻴﺲ‬
‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﻫﺬﻩ‬ ‫ﺗﻄﺒﻴﻖ‬ ‫ﹰ‬‫ﺎ‬‫ﺩﺍﺋﻤ‬ ‫ﺍﻟﻀـﺮﻭﺭﻱ‬،‫ﺍﻟﺘﺎﱄ‬ ‫ﻋﻠﻰ‬ ‫ﻧﺼﺖ‬ ‫ﺍﻟﺘﻤﺪﻳﺪﺍﺕ‬ ‫ﺃﻧﻈﻤﺔ‬ ‫ﻷﻥ‬" :‫ﺟﻬﺎﺯ‬ ‫ُﺴﺘﺨﺪﻡ‬‫ﻳ‬ ‫ﻋﻨﺪﻣﺎ‬
‫ﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﻋﻠﻰ‬ ‫ﺗﺰﻳﺪ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬ ‫ﺫﻭ‬ ‫ﹰ‬‫ﺎ‬‫ﻣﻌ‬ ‫ﻭﺍﻟﻘﺼﺮ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﺯﻳﺎﺩﺓ‬ ‫ﻣﻦ‬ ‫ﻟﻠﺤﻤﺎﻳﺔ‬‫ﺍﻟﻘﺼﺮ‬‫ﺍﻷﻋﻈﻤﻴﺔ‬‫ﺍﳌﺘﻮﻗﻌﺔ‬PSCC‫ﻋﻨﺪ‬
‫ﺍﳊﻤﻞ‬ ‫ﻃﺮﻑ‬ ‫ﻣﻦ‬ ‫ﳏﻤﻲ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﺃﻥ‬ ‫ُﻌﺘﻘﺪ‬‫ﻴ‬‫ﻓ‬ ،‫ﺗﺮﻛﻴﺒﻪ‬ ‫ﻣﻜﺎﻥ‬. "
‫ﺍﻟﺸﻜﻞ‬ ‫ﻳﺒﲔ‬)٣(‫ﺍﳌﻌﺎﺩﻟﺔ‬ ‫ﺍﺳﺘﺨﺪﺍﻡ‬‫ﺍﻷﺩﻳﺒﺎﺗﻴﺔ‬‫ﺃﺳﺎﺱ‬ ‫ﻋﻠﻰ‬k=115‫ﻗﺎﻃـﻊ‬ ‫ﺍﺳﺘﺨﺪﺍﻡ‬ ‫ﻋﻨﺪ‬MCB/‫ﻓﺎﺻﻤـﺔ‬
‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻣﻦ‬ ‫ﺍﳊﻤـﺎﻳﺔ‬.‫ﻟﻠﻘﺎﻃـﻊ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻣﻮﺍﺻﻔـﺎﺕ‬ ‫ﻣﻨﺤﲏ‬ ‫ﺗﻘﺎﻃﻊ‬ ‫ﺍﻟﺸﻜﻞ‬ ‫ﻳﺒﲔ‬MCB‫ﻣﻊ‬ ‫ﺍﻟﻔﺎﺻﻤﺔ‬ ‫ﺃﻭ‬
‫ﺣﺎ‬ ‫ﻭﰲ‬ ،‫ﺍﻷﺻﻐﺮ‬ ‫ﺍﻟﻌﻄﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻣﺎ‬ ‫ﻣﻌﺰﻭﻝ‬ ‫ﻟﻨﺎﻗﻞ‬ ‫ﺍﻷﺩﻳﺒﺎﰐ‬ ‫ﺍﳋﻂ‬‫ﺳﻴﺘﺠﺎﻭﺏ‬ ‫ﻣﻨﻪ‬ ‫ﺃﻛﱪ‬ ‫ﻋﻄﻞ‬ ‫ﺗﻴﺎﺭﺍﺕ‬ ‫ﻟﺔ‬
‫ﺍﻟﻘﺎﻃﻊ‬/‫ﺃﻗﻞ‬ ‫ﻭﻗﺖ‬ ‫ﺧـﻼﻝ‬ ‫ﺍﻟﻔﺎﺻﻤﺔ‬)‫ﺃﻛﱪ‬ ‫ﺑﺴﺮﻋﺔ‬(‫ﻓﺈﻥ‬ ‫ﻭﺑﺎﻟﻨﺘﻴﺠـﺔ‬ ،‫ﺍﻷﺩﻳﺒﺎﰐ‬ ‫ﺍﳋﻂ‬ ‫ﻋﻠﻰ‬ ‫ﺍﳌﻄﻠﻮﺏ‬ ‫ﺍﻟﻮﻗﺖ‬ ‫ﻣﻦ‬

28. ٢٨ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﻟﺘ‬ ‫ﻣﻦ‬ ‫ﺃﻗﻞ‬ ‫ﻋﻄﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺎﻟﺔ‬ ‫ﻭﰲ‬ ،‫ﳏﻘﻘﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺩﺍﺭﺓ‬ ‫ﻣﻦ‬ ‫ﺍﻟﺘﺎﻣﺔ‬ ‫ﺍﳊﻤﺎﻳﺔ‬‫ﺍﻷﺻﻐﺮ‬ ‫ﻴﺎﺭ‬،‫ﺟﻬﺎﺯ‬ ‫ﻓﺈﻥ‬
‫ﹰ‬‫ﺍ‬‫ﺟﺪ‬ ‫ﹰ‬‫ﺎ‬‫ﺑﻄﻴﺌ‬ ‫ﹰ‬‫ﺎ‬‫ﲡﺎﻭﺑ‬ ‫ﺳﻴﺘﺠﺎﻭﺏ‬ ‫ﺍﳊﻤﺎﻳﺔ‬،‫ﺯﺍﺋﺪ‬ ‫ﺗﺴﺨﲔ‬ ‫ﺫﻟﻚ‬ ‫ﻋﻦ‬ ‫ﻭﺳﻴﻨﺘﺞ‬Overheating
‫ﻟﻠﻜﺒﻞ‬.
‫ﺍﻟﻜﻠﻲ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﺯﻣﻦ‬ ‫ﻳﺆﺧﺬ‬‫ﻟﻠﻔﻮﺍﺻﻢ‬‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﻧﺸﺮﺍﺕ‬ ‫ﻣﻦ‬ ‫ﺍﻟﺮﺋﻴﺴﻴﺔ‬ ‫ﻭﺍﻟﻘﻮﺍﻃﻊ‬،‫ﻭﻣﻦ‬
‫ﻣﺪﺓ‬ ‫ﺧﻼﻝ‬ ‫ﺑﺎﻟﻔﺼﻞ‬ ‫ﺍﳊﻤﺎﻳﺔ‬ ‫ﺟﻬﺎﺯ‬ ‫ﺍﺳﺘﺠﺎﺑﺔ‬ ‫ﻣﺪﻯ‬ ‫ﺇﻗﺮﺍﺭ‬ ‫ﺍﻟﺴﻬﻞ‬ ‫ﻣﻦ‬ ‫ﻳﺼﺒﺢ‬ ‫ﹶﻢ‬‫ﺛ‬‫ﺍﳌﺪﺓ‬ ‫ﻣﻦ‬ ‫ﺃﻗﻞ‬ ‫ﺯﻣﻨﻴﺔ‬
‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻳﺘﺤﻤﻠﻬﺎ‬ ‫ﺍﻟﱵ‬.
‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﺗﻘﺪﻡ‬‫ﻟﻠﻜﺒﻼﺕ‬‫ﻋﻨﺪ‬ ‫ﳐﺘﻠﻔﺔ‬ ‫ﳌﻘﺎﻃﻊ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﳊﺴﺎﺑﺎﺕ‬ ‫ﺧﺎﺻﺔ‬ ‫ﻣﻨﺤﻨﻴﺎﺕ‬
‫ﻭﻓﻴﻤﺎ‬ ،‫ﻣﻌﻴﻨﺔ‬ ‫ﺍﻓﺘﺮﺍﺿﻴﺔ‬ ‫ﺗﺸﻐﻴﻞ‬ ‫ﻇﺮﻭﻑ‬ ‫ﺿﻤﻦ‬ ‫ﳏﺪﺩﺓ‬ ‫ﻛﺒﻞ‬ ‫ﻭﻧﻮﻋﻴـﺔ‬ ‫ﻣﻌﲔ‬ ‫ﺯﻣﻦ‬‫ﻫﺬﻩ‬ ‫ﺑﻌﺾ‬ ‫ﻳﻠﻲ‬
‫ﱢﻌﺔ‬‫ﻨ‬‫ﺍﳌﺼ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬ ‫ﻹﺣﺪﻯ‬ ‫ﺍﳌﻨﺤﻨﻴـﺎﺕ‬‫ﻟﻠﻜﺒﻼﺕ‬.

29. ٢٩ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
3-4‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻋﻨﺪﻫﺎ‬ ‫ﻣﻌﻄﻰ‬ ‫ﻧﻘﻄﺔ‬ ‫ﲢﺖ‬ ‫ﺗﻘﻊ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺭﻗﻢ‬ ‫ﺍﳉﺪﻭﻝ‬)٢٥(‫ﺑﻌ‬ ‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﻣﻦ‬ ‫ﻣﺎ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﻟﺘﻴﺎﺭ‬ ‫ﻣﺎ‬ ‫ﺣﺪ‬ ‫ﺇﱃ‬ ‫ﺩﻗﻴﻘﺔ‬ ‫ﹰ‬‫ﺎ‬‫ﻗﻴﻤ‬ ‫ﻳﻌﻄﻲ‬‫ﻣﻌﺮﻓﺔ‬ ‫ﺪ‬:
-‫ﺍﻟﻌﻠﻮﻳﺔ‬ ‫ﻟﻠﺠﻬﺔ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻗﻴﻤﺔ‬upstream،‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﳍﺬﻩ‬‫ﺍﻟﻨﻘﻄﺔ‬A‫ﺍﻟﺸﻜﻞ‬ ‫ﰲ‬)٧(
-‫ﻋﻨﺪﻫﺎ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬ ‫ﺍﳌﺮﺍﺩ‬ ‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﺑﲔ‬ ‫ﺍﻟﻮﺍﺻﻞ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻭﻣﻘﻄﻊ‬ ‫ﻃﻮﻝ‬‫ﺍﻟﻨﻘﻄﺔ‬ ،B‫ﻭﺍﻟﻨﻘﻄﺔ‬A.
‫ﺍﻟﱵ‬ ‫ﺍﻟﻘﻴﻤﺔ‬ ‫ﻣﻦ‬ ‫ﻣﺒﺎﺷﺮﺓ‬ ‫ﺃﻛﱪ‬ ‫ﻗﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺫﻱ‬ ‫ﻗﺎﻃﻊ‬ ‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﺫﻟﻚ‬ ‫ﺑﻌﺪ‬ ‫ﳚﺮﻱ‬‫ﺍﳉﺪﻭﻝ‬ ‫ﻣﻦ‬ ‫ﻋﻠﻴﻬﺎ‬ ‫ﺣﺼﻠﻨﺎ‬.
‫ﺍﻟـ‬ ‫ﺗﻘﻨﻴﺔ‬ ‫ﹼﻖ‬‫ﻘ‬‫ﺗﺘﺤ‬ ‫ﺍﻟﻄﺮﻳﻘﺔ‬ ‫ﻭﻬﺑﺬﻩ‬cascading‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﲢﺖ‬ ‫ﺗﻘﻊ‬ ‫ﺍﻟﱵ‬ ‫ﺍﻟﻘﻮﺍﻃﻊ‬ ‫ﻛﺎﻓﺔ‬ ‫ﺇﻥ‬ ‫ﺃﻱ‬ ،A‫ﺗﻜﻮﻥ‬
‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﻳﻘﻊ‬ ‫ﺍﻟﺬﻱ‬ ‫ﻟﻠﻘﺎﻃﻊ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻣﻦ‬ ‫ﺃﺻﻐﺮ‬ ‫ﻗﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺫﺍﺕ‬A.
‫ﻣﺜﺎﻝ‬:
‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻟﺘﺤﺪﻳﺪ‬ISC‫ﺍﻟﺴﻔﻠﻴﺔ‬ ‫ﺍﳉﻬﺔ‬ ‫ﻋﻨﺪ‬ ‫ﳓﺎﺳﻲ‬ ‫ﻟﻨﺎﻗﻞ‬B‫ﺍﻟﺸﻜﻞ‬ ‫ﻣﻦ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻧﺄﺧﺬ‬)٧(‫ﻭﻫﻮ‬
50mm2
‫ﻭﻫﻮ‬ ‫ﻟﻜﺒﻞ‬ ‫ﻃﻮﻝ‬ ‫ﺃﻗﺮﺏ‬ ‫ﺃﻭ‬ ‫ﻃﻮﻝ‬ ‫ﻋﻠﻰ‬ ‫ﹰ‬‫ﺎ‬‫ﺃﻓﻘﻴ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﻋﻦ‬ ‫ﻧﺒﺤﺚ‬ ‫ﰒ‬11m‫ﺍﻷﺳﻔﻞ‬ ‫ﺇﱃ‬ ‫ّﻪ‬‫ﺠ‬‫ﻧﺘ‬ ‫ﰒ‬ ،
‫ﺧـﻂ‬ ‫ﻋﻠﻰ‬‫ﺷﺎﻗﻮﱄ‬‫ﺍﻟﻘ‬ ‫ﺗﻴـﺎﺭ‬ ‫ﻟﻘﻴﻤﺔ‬ ‫ﻗﺮﻳﺒﺔ‬ ‫ﻗﻴﻤـﺔ‬ ‫ﻣﻦ‬ ‫ﻳﻨﻄﻠﻖ‬ ‫ﺍﻟﺬﻱ‬ ‫ﺍﻷﻓﻘﻲ‬ ‫ﺍﳋﻂ‬ ‫ﻣﻊ‬ ‫ﻳﺘﻘﺎﻃﻊ‬‫ﻋﻨﺪ‬ ‫ﺼﺮ‬A،
‫ﻫﻲ‬ ‫ﺍﳌﺜﺎﻝ‬ ‫ﻭﰲ‬28kA‫ﻫﻲ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﰲ‬ ‫ﳍﺎ‬ ‫ﻗﻴﻤﺔ‬ ‫ﻭﺃﻗﺮﺏ‬30kA.‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻗﻴﻤﺔ‬ ‫ﲤﺜﻞ‬ ‫ﺍﻟﺘﻘﺎﻃﻊ‬ ‫ﻧﻘﻄﺔ‬ ‫ﺇﻥ‬
B‫ﻭﻫﻲ‬19kA.

30. ٣٠ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺟﺪﻭﻝ‬)٢٥(،‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻋﻨﺪﻫﺎ‬ ‫ﻣﻌﻄﻰ‬ ‫ﻧﻘﻄﺔ‬ ‫ﲢﺖ‬ ‫ﺗﻘﻊ‬ ‫ﻧﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬
ISC at a point downstream, in terms of a known upstream fault-current value and the length and c.s.a.
of the intervening conductors, in 230/400 v 3-phase system.
Note: for a 3-phase system having 230 v between phases, divide the above lengths by √3 = 1.732

31. ٣١ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
5-‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬:
‫ﺑﺄﻧﻪ‬ ‫ﻧﻘﻄﺘﲔ‬ ‫ﺑﲔ‬ ‫ﻳﺼﻞ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ّﻑ‬‫ﺮ‬‫ﻳﻌ‬"‫ﺍﻷﺻﻠﻴﺔ‬ ‫ﺍﻟﺘﻐﺬﻳﺔ‬ ‫ﻧﻘﻄﺔ‬ ‫ﺑﲔ‬ ‫ﺍﳉﻬﺪ‬ ‫ﻓﺮﻕ‬
‫ﺍﳊﻤﻞ‬ ‫ﻭﻧﻘﻄﺔ‬."‫ﺍﻟ‬ ‫ﻫﺎﺗﲔ‬ ‫ﺑﲔ‬ ‫ﻟﻠﻨﺎﻗﻞ‬ ‫ﺻﻐﲑﺓ‬ ‫ﳑﺎﻧﻌﺔ‬ ‫ﻫﻨﺎﻙ‬ ‫ﺃﻥ‬ ‫ﻋﻦ‬ ‫ﻫﺬﺍ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻓﺮﻕ‬ ‫ﻭﻳﻌﱪ‬،‫ﻨﻘﻄﺘﲔ‬
‫ﺍﻟ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﺗﻮﺗﺮﺍﺕ‬ ‫ﻋﻠﻰ‬ ‫ﺍﶈﺎﻓﻈﺔ‬ ‫ﻋﻠﻰ‬ ‫ﻟﻸﲪﺎﻝ‬ ‫ﺍﻟﺼﺤﻴﺢ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﻭﻳﻌﺘﻤﺪ‬‫ﺍﻷﲪﺎﻝ‬ ‫ﳍﺬﻩ‬ ‫ﻨﻈﺎﻣﻴﺔ‬
‫ﺍﻟﻜﺎﻣﻞ‬ ‫ﺍﳊﻤﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﻧﻘﻞ‬ ‫ﻋﻨﺪ‬ ‫ﻭﺫﻟﻚ‬،‫ﻋﻠﻰ‬ ‫ﺍﶈﺎﻓﻈﺔ‬ ‫ﺃﺳﺎﺱ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﱠﻢ‬‫ﻤ‬‫ُﺼ‬‫ﻳ‬ ‫ﰒ‬ ‫ﻭﻣﻦ‬
‫ﳍﺎ‬ ‫ﺍﻟﻨﻈﺎﻣﻴﺔ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﺗﻮﺗﺮﺍﺕ‬ ‫ﺇﱃ‬ ‫ﳝﻜﻦ‬ ‫ﻣﺎ‬ ‫ﺃﻗﺮﺏ‬ ‫ﺍﻟﺘﺸﻐﻴﻞ‬ ‫ﺗﻮﺗﺮﺍﺕ‬ ‫ﻛﻮﻥ‬‫ﻬﺑﺒﻮﻁ‬ ‫ﺑﺎﻟﺴﻤﺎﺡ‬ ‫ﻭﺫﻟﻚ‬
‫ْﻦ‬‫ﻴ‬َ‫ﻴ‬‫ﺍﻵﺗ‬ ‫ﻭﺍﻟﺸﻜﻞ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﺣﺴﺐ‬ ‫ﺃﻋﻈﻤﻲ‬ ‫ﻣﺌﻮﻱ‬ ‫ﺗﻮﺗﺮ‬.‫ﺍﻟﻘﻴﻤﺔ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﲡﺎﻭﺯ‬ ‫ﻭﻋﻨﺪ‬
‫ﺍﳌﺴﻤﻮﺣﺔ‬‫ﻣﺒﺎﺷﺮﺓ‬ ‫ﺍﻷﻛﱪ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻳﺆﺧﺬ‬ ‫ﻣﻌﲔ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻋﻠﻰ‬.
1-5‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﺣﺴﺎﺏ‬ ‫ﰲ‬ ‫ﺍﳌﺴﺘﺨﺪﻣﺔ‬ ‫ﺍﻟﻌﻼﻗﺎﺕ‬:
‫ﺣﺮﺍﺭﺓ‬ ‫ﺩﺭﺟﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻨﻮﻋﻴﺔ‬ ‫ﻣﻘﺎﻭﻣﺘﻪ‬ ‫ﻭﺃﻥ‬ ‫ﳓﺎﺳﻲ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﺃﻥ‬ ‫ﺑﻔﺮﺽ‬70° C‫ﺗﺴﺎﻭﻱ‬1/45‫ﺍﺳﺘﻨﺘﺎﺝ‬ ‫ﳝﻜﻦ‬
‫ﺍﻟﺘﺎﻟﻴﺘﲔ‬ ‫ﺍﻟﻌﻼﻗﺘﲔ‬:

32. ٣٢ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

33. ٣٣ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﻟﻜ‬ ‫ﺍﳊﺴﺎﺑﺎﺕ‬ ‫ﰲ‬ ‫ﺍﳌﺴﺘﺨﺪﻣﺔ‬ ‫ﺍﻷﺳﺎﺳﻴﺔ‬ ‫ﺍﻟﻌﻼﻗﺎﺕ‬ ‫ﻷﻫﻢ‬ ‫ﻣﻠﺨﺺ‬ ‫ﻳﻠﻲ‬ ‫ﻭﻓﻴﻤﺎ‬‫ﳐﺘﻠﻔﺔ‬ ‫ﺗﻮﺗﺮﺍﺕ‬ ‫ﻋﻨﺪ‬ ‫ﻬﺮﺑﺎﺋﻴﺔ‬:
* I= P/ UL cos ϕ for 2 phases
S : The apparent power measured by [kVA]
P : The active power measured by [kW]
ρ : The resistivity measured by [Ω.mm2
/m] = 1/54 for Copper, 1/34 for Aluminum at 20o
C
L : Length of conductor [m]
s : conductor cross section [mm2
]
∆V: Voltage drop [V] also = r.L.I/1000 for single phase,
=√٣.r.L.I/1000 for three phase = 9.5 v for 2.5%
r : approx. cable resistance [Ω/km]
ε %: Percentage of a voltage drop. 3% max for lighting load, 6% max for power load
UL : Line voltage; phase to phase voltage [V]
Uph: Phase to neutral voltage [V]
cos ϕ : power factor = 0.8
I : Load current [A]

34. ٣٤ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
6-‫ﺗﻄﺒﻴﻘﻲ‬ ‫ﻣﺜﺎﻝ‬:
‫ﳏﻮﻝ‬‫ﺍﺳﺘﻄﺎﻋﺘﺔ‬1000 KVA‫ﺑﺎﺳﺘﻄﺎﻋﺔ‬ ‫ﹰ‬‫ﺎ‬‫ﳐﺘﻠﻄ‬ ‫ﹰ‬‫ﻼ‬‫ﲪ‬ ‫ﻳﻐﺬﻱ‬150 kW‫ﻋﻠﻰ‬ ‫ﻣﻮﺿﺤﺔ‬ ‫ﺍﳌﻌﻄﻴﺎﺕ‬ ‫ﺑﻘﻴﺔ‬ ،‫ﺃﺧﺮﻯ‬ ‫ﹰ‬‫ﻻ‬‫ﻭﺃﲪﺎ‬
‫ﺍﻟﺸﻜﻞ‬)٩(:
PSC= 500 MVA‫ﺍﻟﻘﺼﺮ‬ ‫ﺍﺳﺘﻄﺎﻋﺔ‬
S= 1000 kVA
20KV/380 V
USC=5%, WC=15500 W
--------------------------
، ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺃﺣﺎﺩﻱ‬ ‫ﳓﺎﺳﻲ‬ ‫ﻛﺒﻞ‬XLPE‫ﺣﺎﻣﻠﺔ‬ ‫ﻋﻠﻰ‬ ‫ﻣﻨﻔﺬ‬‫ﻛﺒﻼﺕ‬‫ﺃﻓﻘﻴﺔ‬ ‫ﻣﻌﺪﻧﻴﺔ‬
‫ﺍﶈﻴﻂ‬ ‫ﺍﳉﻮ‬ ‫ﺣﺮﺍﺭﺓ‬35° C
‫ﻃﻮﻟﻪ‬١٠‫ﻣﺘﺮ‬
--------------------------
‫ﺑﺎﺳﺒﺎﺭ‬‫ﻃﻮﻟﻪ‬ ‫ﳓﺎﺳﻲ‬5‫ﻭﻣﻘﻄﻌﻪ‬ ‫ﻣﺘﺮ‬80 x 5 mm2
--------------------------
‫ﻣﺴﻠﺢ‬ ‫ﻏﲑ‬ ‫ﺍﻟﻨﻮﺍﺓ‬ ‫ﺛﻼﺛﻲ‬ ‫ﻛﺒﻞ‬PVC
‫ﻋﻤﻖ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻷﺭﺽ‬ ‫ﰲ‬ ‫ﻣﺮﺩﻭﻡ‬ ‫ﺃﻧﺒﻮﺏ‬ ‫ﰲ‬ ‫ﻣﻨﻔﺬ‬80 cm
‫ﺍﻟﺘﺮﺑﺔ‬ ‫ﺣﺮﺍﺭﺓ‬30° C‫ﻃﻮﻟﻪ‬١٠٠‫ﻣﺘﺮ‬
‫ﻋﺪﺩ‬‫ﺍﻟﺪﺍﺭﺍﺕ‬)‫ﺍﻟﻜﺒﻼﺕ‬(‫ﺍﺠﻤﻟﺎﻭﺭﺓ‬٣
--------------------------
‫ﳐﺘﻠﻂ‬ ‫ﲪﻞ‬)‫ﻭﳏﺮﻛﺎﺕ‬ ‫ﺇﻧﺎﺭﺓ‬(P = 150 kW
‫ﺍﻻﺳﺘﻄﺎﻋﺔ‬ ‫ﻋﺎﻣﻞ‬0.8
‫ﺍﳌﻄﻠﻮﺏ‬:
١-‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻭﻫﺒﻮﻁ‬ ‫ﺍﳌﻼﺋﻢ‬ ‫ﻟﻠﻘﺎﻃﻊ‬ ‫ﺍﻻﲰﻲ‬ ‫ﻭﺍﻟﺘﻴﺎﺭ‬ ‫ﺍﶈﻮﻟﺔ‬ ‫ﻛﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺣﺴﺎﺏ‬
٢-‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻭﻫﺒﻮﻁ‬ ‫ﺍﳌﻼﺋﻢ‬ ‫ﻟﻠﻘﺎﻃﻊ‬ ‫ﺍﻻﲰﻲ‬ ‫ﻭﺍﻟﺘﻴﺎﺭ‬ ‫ﺍﳊﻤﻞ‬ ‫ﻛﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺣﺴﺎﺏ‬
٣-‫ﺍﻟﺪﺍﺭﺓ‬ ‫ﺃﺟﺰﺍﺀ‬ ‫ﻟﻜﺎﻓﺔ‬ ‫ﺍﳌﻤﺎﻧﻌﺎﺕ‬ ‫ﺣﺴﺎﺏ‬
٤-‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬A
٥-‫ﺍﻟﻨﻘﻄﺔ‬ ‫ﻋﻨﺪ‬ ‫ﺍﻟﻘﺼﺮ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺣﺴﺎﺏ‬B

35. ٣٥ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺍﳊﻞ‬:
‫ﺍﳉﺪﻭﻝ‬ ‫ﰲ‬ ‫ﺍﳌﻮﺟﻮﺩﺓ‬ ‫ﺑﺎﻟﻌﻼﻗﺎﺕ‬ ‫ﺑﺎﻻﺳﺘﻌﺎﻧﺔ‬:
١-‫ﺍﶈﻮﻟﺔ‬ ‫ﻣﻦ‬ ‫ﻛﺎﻣﻞ‬ ‫ﲪﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺍﺳﺘﻤﺮﺍﺭ‬ ‫ﺑﻔﺮﺽ‬ ‫ﺍﳊﻤﻮﻟﺔ‬ ‫ﻛﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺑﺎﳉﺪﻭﻝ‬ ‫ﺑﺎﻻﺳﺘﻌﺎﻧﺔ‬ ‫ﺍﻟﻔﻌﻠﻲ‬ ‫ﺍﳊﻤﻞ‬ ‫ﺗﻴﺎﺭ‬ ‫ُﺤﺴﺐ‬‫ﻳ‬)a٢٥(‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﻣﻦ‬:IB = 1.52 S = 1520 [A]
‫ﺍﻟﺘﺎﱄ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﻭﻓﻖ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﻮﺍﻣﻞ‬ ‫ُﺤﺴﺐ‬‫ﺗ‬:
‫ﺍﻟﻜﻠﻲ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻋﺎﻣﻞ‬ ‫ﻭﻳﻜﻮﻥ‬:K = 1.05 x 0.7 x 0.95 ≈ 0.7
‫ﺭﻗﻢ‬ ‫ﺍﳉﺪﻭﻝ‬ ‫ﻣﻦ‬)٥(‫ﻭﻫﻮ‬ ‫ﺍﳌﻨﺎﺳﺐ‬ ‫ﺍﳌﻘﻄﻊ‬ ‫ﺇﳚﺎﺩ‬ ‫ﳝﻜﻦ‬300 mm2
‫ﻗﺪﺭﻩ‬ ‫ﹰ‬‫ﺍ‬‫ﺗﻴﺎﺭ‬ ‫ﻳﺘﺤﻤﻞ‬ ‫ﺃﻧﻪ‬ ‫ﺇﺫ‬740A‫ﻗﺒﻞ‬
‫ﻭﺑﺄﺧﺬ‬ ،‫ﺍﻟﺘﺼﺤﻴﺢ‬٣‫ﻛﺒﻼﺕ‬‫ﻗﺪﺭﻩ‬ ‫ﹰ‬‫ﺍ‬‫ﺗﻴﺎﺭ‬ ‫ﻳﺘﺤﻤﻞ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﺃﻥ‬ ‫ﻳﺘﺒﲔ‬ ‫ﺍﻟﺘﺼﺤﻴﺢ‬ ‫ﻭﺑﻌﺪ‬ ‫ﺍﻟﻮﺍﺣﺪ‬ ‫ﻟﻠﻄﻮﺭ‬:
IZ = 3 x 740 x 0.7 = 1554 A
‫ﺍﲰﻲ‬ ‫ﺗﻴﺎﺭ‬ ‫ﺫﻱ‬ ‫ﻗﺎﻃﻊ‬ ‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﳚﺮﻱ‬ ‫ﺍﻟﻌﻼﻗﺔ‬ ‫ﻭﻟﺘﺤﻘﻴﻖ‬In = 1600 A
‫ﺑﺎﳉﺪﻭﻝ‬ ‫ﻭﺑﺎﻻﺳﺘﻌﺎﻧﺔ‬)٢١(‫ﻳﻠﻲ‬ ‫ﻛﻤﺎ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻋﻦ‬ ‫ُﻌﱪ‬‫ﻳ‬:
‫ﺍﳌﻌﺪﻧﻴﺔ‬ ‫ﺍﻷﺟﺰﺍﺀ‬ ‫ﺭﺑﻂ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻟﺮﺋﻴﺴﻲ‬ ‫ﺍﻷﺭﺿﻲ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﳊﻴﺎﺩﻱ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻟﻄﻮﺭ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻷﻃﻮﺍﺭ‬ ‫ﻋﺪﺩ‬
‫ﻋﺪﺩ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﻃﻮﺭ‬ ‫ﻟﻜﻞ‬

36. ٣٦ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

37. ٣٧ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫ﺑﺎﳉﺪﻭﻝ‬ ‫ﻭﺑﺎﻻﺳﺘﻌﺎﻧﺔ‬)٢١(‫ﻳﻠﻲ‬ ‫ﻛﻤﺎ‬ ‫ﺍﻟﻨﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻋﻦ‬ ‫ﻳﻌﱪ‬:
‫ﺍﳌﻌﺪﻧﻴﺔ‬ ‫ﺍﻷﺟﺰﺍﺀ‬ ‫ﺭﺑﻂ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻟﺮﺋﻴﺴﻲ‬ ‫ﺍﻷﺭﺿﻲ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻟﻄﻮﺭ‬ ‫ﻧﺎﻗﻞ‬ ‫ﻣﻘﻄﻊ‬
‫ﺍﻷﻃﻮﺍﺭ‬ ‫ﻋﺪﺩ‬
‫ﻋﺪﺩ‬‫ﺍﻟﻨﻮﺍﻗﻞ‬‫ﻃﻮﺭ‬ ‫ﻟﻜﻞ‬
‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺍﻟﻜﺒﻞ‬ ‫ﻟﻜﻮﻥ‬ ‫ﹰ‬‫ﺍ‬‫ﻧﻈﺮ‬PVC‫ﺍﻟﻌﻼﻗﺔ‬ ‫ُﻄﺒﻖ‬‫ﺗ‬:
‫ﺍﻟﻘﻴﻤﺔ‬ ‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﲡﺎﻭﺯ‬ ‫ﻟﻌﺪﻡ‬ ‫ﹰ‬‫ﻻ‬‫ﻣﻘﺒﻮ‬ ‫ﺍﻟﻜﺒﻞ‬ ‫ﻣﻘﻄﻊ‬ ‫ﻳﻌﺘﱪ‬‫ﺍﳌﺴﻤﻮﺣﺔ‬‫ﺍﺧﺘﻴﺎﺭ‬ ‫ﳚﺐ‬ ‫ﲡﺎﻭﺯﻫﺎ‬ ‫ﺣﺎﻝ‬ ‫ﻭﰲ‬ ،‫ﻟﻪ‬
‫ﺍﻟﺘﻮﺗﺮ‬ ‫ﻫﺒﻮﻁ‬ ‫ﺣﺴﺎﺏ‬ ‫ﻭﺇﻋﺎﺩﺓ‬ ‫ﺍﻷﻛﱪ‬ ‫ﺍﳌﻘﻄﻊ‬
٣-‫ﺍﻟﺪﺍﺭﺓ‬ ‫ﻷﺟﺰﺍﺀ‬ ‫ﺍﳌﻤﺎﻧﻌﺎﺕ‬ ‫ﺣﺴﺎﺏ‬:
‫ﺃ‬-‫ﻗﻴﻢ‬ ‫ﺟﺪﻭﻝ‬ ‫ﻣﻦ‬R‫ﻭ‬χ‫ﻳﻠﻲ‬ ‫ﻛﻤﺎ‬ ‫ﺍﻟﻘﻴﻤﺘﺎﻥ‬ ‫ﻫﺎﺗﺎﻥ‬ ‫ﺗﻌﻄﻰ‬ ،‫ﺍﻟﻌﺎﱄ‬ ‫ﺍﳉﻬﺪ‬ ‫ﻟﻄﺮﻑ‬:
R1 = 0.043 [ mΩ] χ1 = 0.283 [ mΩ]
‫ﺍﶈﻮﻟﺔ‬:
‫ﺏ‬-‫ﺍﻷﻭﺭﰊ‬ ‫ﺍﻟﻨﻈﺎﻡ‬ ‫ﻳﻮﺻﻲ‬IEC‫ﺗﻮﺗﺮ‬ ‫ﺫﺍﺕ‬ ‫ﳏﻮﻻﺕ‬ ‫َﺞ‬‫ﺘ‬‫ُﻨ‬‫ﺗ‬ ‫ﺑﺄﻥ‬230/400V‫ﺗﻮﺗﺮ‬ ‫ﻣﻦ‬ ‫ﹰ‬‫ﻻ‬‫ﺑﺪ‬
220/380 V‫ﺍﻟﺮ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻷﺳﺎﺱ‬ ‫ﻫﺬﺍ‬ ‫ﻋﻠﻰ‬ ‫ﻓﻴﻬﺎ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﺟﺮﻯ‬ ‫ﻗﺪ‬ ‫ﺍﳌﺮﺍﺟﻊ‬ ‫ﺑﻌﺾ‬ ‫ﻓﺈﻥ‬ ‫ﻟﺬﻟﻚ‬ ،‫ﻣﻦ‬ ‫ﻏﻢ‬
‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﺗﻮﺗﺮ‬ ‫ﺃﻥ‬220/380 V.‫ﺍﳌﻌﻄﻰ‬ ‫ﺍﻟﺸﺒﻜﺔ‬ ‫ﺗﻮﺗﺮ‬ ‫ﻭﻓﻖ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﺳﻴﺠﺮﻱ‬ ‫ﺍﳌﺜﺎﻝ‬ ‫ﻫﺬﺍ‬ ‫ﻭﰲ‬.
-‫ﻗﻴﻤﺔ‬ ‫ﺇﻥ‬Wc‫ﺇ‬ ‫ﻣﻦ‬ ‫ﺍﻟﻘﻴﻤﺔ‬ ‫ﻫﺬﻩ‬ ‫ﺃﺧﺬﺕ‬ ‫ﻭﻗﺪ‬ ،‫ﻟﻠﻤﺤﻮﻻﺕ‬ ‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺔ‬ ‫ﻣﻦ‬ ‫ﻋﺎﺩﺓ‬ ‫ﺗﻌﻄﻰ‬‫ﺣﺪﻯ‬
‫ﻳﻠﻲ‬ ‫ﻛﻤﺎ‬ ‫ﺍﻷﺳﺎﺱ‬ ‫ﻫﺬﺍ‬ ‫ﻋﻠﻰ‬ ‫ﺍﳊﺴﺎﺏ‬ ‫ﻭﺳﻴﺠﺮﻱ‬ ‫ﺍﻟﺼﺎﻧﻌﺔ‬ ‫ﺍﻟﺸﺮﻛﺎﺕ‬:

38. ٣٨ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

39. ٣٩ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281

40. ٤٠ ‫اﻟﻤﺼﺮي‬ ‫ﺻﺒﺤﻲ‬ ‫ﻣﺤﻤﺪ‬
‫آﻬﺮﺏﺎﺋﻴﺔ‬ ‫ﻋﻠﻮم‬ ‫هﻨﺪﺳﺔ‬ ‫ﻣﺎﺟﺴﺘﻴﺮ‬
00963 94 571281
‫اﻟﻤﺮاﺟﻊ‬References
1. Electrical Installation Guide according to IEC International Standard, GROUPE
SCHNEIDER.
2. Low Voltage Cable, Technical Catalogue, Saudi Cable
Company.
1. Asea Brown Boveri Pocket Book, ABB Switchgear Manual, 10th edition.
2. Knockler Moller Wiring Manual, Automation and Power Distribution.
3. Selecting Power Cable, some hints on cable dimensioning,
ASEA KABEL.
1. NFC 15-100 edition 1991.