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Elektronik ve Teknoloji Merkezi
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| | Yazar | Mesaj | aldini
| | Tarih: 03.12.2008, 14:28 Mesaj konusu: Parafudr Rehberi | |
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atmosfer sebepli yüksek bas›nç ..............................................................................................................1
direkt etkiler ..........................................................................................................................1
dolayl› etkiler.........................................................................................................................1
türkiye’de y›ll›k ortalama y›ld›r›ml› f›rt›nal› günler say›s› ....................................................2
türkiye’de y›ll›k ortalama y›ld›r›ml› f›rt›nal› günler say›s›na göre y›ld›r›m riski ..................2
atmosferik deflarj›n elektrik modeli ....................................................................................3
y›ld›r›ma karfl› koruma ............................................................................................................................4
risklerin ve sonuçlar›n tahmini........................................................................................................4
dolayl› etkilere karfl› koruma ..........................................................................................................6
genel prensipler ....................................................................................................................6
meydana gelen elektromanyetik alan ....................................................................................7
parafudr ile koruma prensipleri ......................................................................................................8
0.5 m kural› ............................................................................................................................8
parafudr ba¤lant› kablolar›n›n minimum de¤erleri ..............................................................8
korunulan uzunluklar ......................................................................................................................9
parafudrlar›n koordinasyonu ........................................................................................................10
pratik hesap..........................................................................................................................10
parafudrlar›n korunmas› ................................................................................................................11
genel ...................................................................................................................................11
k›sa devrelere karfl› korunma ..............................................................................................12
dolayl› konta¤a karfl› korunma ............................................................................................12
diferansiyel devre kesiciler aras› koordinasyon ..................................................................13
aktif koruma ........................................................................................................................14
y›ld›r›m›n toprak alt›ndan tesisata ulaflmas› ......................................................................15
parafudrlar .............................................................................................................................................16
parafudrlar›n karakteristikleri........................................................................................................16
up kv cinsinden koruma seviyesi ........................................................................................16
ýmax, maksimum ak›m de¤eri..............................................................................................16
ýn, nominal ak›m de¤eri........................................................................................................16
uc, parafudrun çal›flma gerilimi ..........................................................................................16
ýc, normal çal›flma ak›m› ......................................................................................................16
ýres, reziduel gerilim ............................................................................................................16
parafudrlar›n seçimi...............................................................................................................................17
parafudrlar›n korunmas›......................................................................................................19
telefon hatlar›n›n korunmas› ..............................................................................................19
parafudr, teknolojik yaklafl›m ................................................................................................................20
parafudrun içindeki varistor teknolojisi ..............................................................................21
varistorun çal›flma prensibi ................................................................................................21
neden daha fazla parafudr kullanmal› ..........................................................................................22
legrand parafudrlar, devaml›l›ktaki yenilik............................................................................................23
her riske uygun bir parafudr ..........................................................................................................23
tamamlay›c› parafudrlar›n seçim rehberi ..............................................................................................25
baflka parafudr gerekir mi?............................................................................................................25
ana panodaki parafudrun kapasitesi nedir? ..................................................................................25
hangi tamamlay›c› parafudrlar kullan›lmal›? ................................................................................26
hangi referansl› parafudr seçilmeli? .............................................................................................26
parafudr seçme amaçl› örnek ak›fl diyagram› ..............................................................................27
parafudr seçimi için ak›fl diyagram› (tt tek fazl› sistem)..............................................................28
parafudr seçimi için ak›fl diyagram› (tnc-s üç fazl› sistem) ........................................................29
müstakil binalar .....................................................................................................................................30
müstakil binalar flemas› ..........................................................................................................................32
daireler .............................................................................................................................................34
daireler flemas›.......................................................................................................................................36
ofis ortamlar› .........................................................................................................................................38
ofis ortamlar› flemas› ..............................................................................................................................40
endüstriyel atölyeler ..............................................................................................................................42
endüstriyel atölyeler flemas› ..................................................................................................................44
pano parafudrlar› ...................................................................................................................................46
telefon hatlar› için parafudrlar ..............................................................................................................47
parafudr korumal› prizler ve bürotik bloklar..........................................................................................47
parafudr korumal› bürotik bloklar ..........................................................................................................48
parafudr de¤erlendirmesi ......................................................................................................................49
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hýrburger
| | Tarih: 25.08.2009, 10:57 Mesaj konusu: | |
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