| Mavjudligi: | |
|---|---|
| Miqdori: | |
YH seriyasi
DGG
Ushbu mahsulot AC 220KV va undan past elektr energiyasini ishlab chiqarish, uzatish, transformatsiya qilish va tarqatish tizimlarida qo'llaniladi. U chaqmoq va ichki ish kuchlanishining amplitudasini belgilangan darajaga cheklash uchun ishlatiladi va butun tizimning izolyatsiyasini muvofiqlashtirish uchun asosiy uskunadir.
Ushbu mahsulot modeli JB/T 8459-2006 'Momaqaldiroqni o'chirish moslamalarining mahsulot modellarini shakllantirish usuli' qoidalariga muvofiq tuzilgan va bo'shliqsiz mahsulotlar GB 11032-2000 'AC uchun bo'shliqlarsiz metall oksidli chaqmoq to'xtatuvchilari' standartiga muvofiq ishlab chiqilgan. 9672-2005 seriyali bo'shliqlari bo'lgan metall oksidi kuchlanish to'xtatuvchilari uchun standart. Yuqoridagi standartlarda aniq belgilanmagan muhim parametrlar va konfiguratsiya usullari uchun ular DLT620-1997 'Haddan tashqari kuchlanishdan himoya qilish va elektr moslamalarini izolyatsiyalash' talablariga muvofiq qayta ko'rib chiqilishi va bajarilishi kerak.
Past bosim |
Tarqatish turi |
Tizim nominal kuchlanishi (kV) Samarali qiymat |
milliy standart modeli Yashin to'xtatuvchining |
nominal kuchlanishi to'xtatuvchining Chaqmoq ) (kV Samarali qiymat |
Bo'shliqsiz chaqmoq to'xtatuvchisi | Chaqmoqni to'xtatuvchi | Qoldiq bosim(kV) (Peak qiymat)Kam emas |
2000mks kvadrat to'lqinli oqim hajmi (A) |
4/10 yuqori oqim bardoshlik (kA) |
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uzluksiz ish kuchlanishi Chaqmoq to'xtatuvchining (kV) Samarali qiymat |
DC 1mA mos yozuvlar kuchlanishi (kV) kam emas dan |
maksimal oqish 0,75 marta DC mos yozuvlar sariqligi (mA) da |
Quvvat chastotasi tushirish kuchlanishi (kV) Samarali qiymat Kam emas |
1,2/50 impulsli tushirish kuchlanishi (kV) Pik qiymati kam emas dan |
Maksimal o'tkazuvchanlik oqimi (mA) |
ostida chaqmoq impulsi oqimi 8/20 da |
Unde 30/60 ishlaydigan impuls oqimi |
ostida 1/4 tik To'lqin impuls oqimi |
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| Past bosim |
Tarqatish turi |
0.22 | YH1,5W-0,28/1,3 | 0.28 | 0.24 | 0.6 | 50 | y |
y | 1.3 | y |
y |
75 | 25 | |
| 0.38 | YH1,5W-0,5/2,6 | 0.5 | 0.42 | 1.2 | 50 | 2.6 | 75 | 25 | |||||||
| Dvigatel turi |
0,66* | YH2.5WD-1.3/3.6 | 1.3 | 0.95 | 1.8 | 50 | y | 3.6 | y | y | 200 | 40 | |||
| 1,14* | YH2.5WD-2.6/7.2 | 2.6 | 1.9 | 3.6 | 50 | y | y | y | 7.2 | y | y | 200 | 40 | ||
| 3kV | Tarqatish turi |
3 | YH5WS-3.8/15 | 3.8 | 2.0 | 7.5 | 50 | y | 15.0 | 12.8 | 17.3 | 75 | 40 | ||
| 3 | YH5WS-5/15 | 5 | 4.0 | 7.5 | 50 | y | - | 15.0 | 12.8 | 17.3 | 75 | 40 | |||
| 3 | YH5CS-3.8/13.5 | 3.8 | y | y | y | 9.0 | 13.5 | 20 | 13.5 | 11.4 | 15.0 | 75 | 40 | ||
| Elektr stantsiyasining turi |
3 | YH5WZ-3.8/13.5 | 3.8 | 2.0 | 7.2 | 50 | y | y | 13.5 | 11.5 | 15.5 | 200 | 65 | ||
| 3 | YH5WZ-5/13.5 | 5 | 4.0 | 7.2 | 50 | y | y | 13.5 | 11.5 | 15.5 | 200 | 65 | |||
| 3 | YH5CZ-3.8/12.0 | 3.8 | y | y | 8.0 | 12.0 | 20 | 12.0 | 10.2 | 13.5 | 200 | 65 | |||
| Kapasitiv turi |
3 | YH5WR-3,8/13,5 | 3.8 | 2.0 | 7.2 | 50 | y | y | y |
13.5 | 10.5 | y |
400 | 65 | |
| 3 | YH5WR-5/13.5 | 5 | 4.0 | 7.2 | 50 | y | y | 13.5 | 10.5 | y | 400 | 65 | |||
| 3 | YH5CR-3.8/12.0 | 3.8 | y | y | y | 8.0 | 12.0 | 20 | 12.0 | 9.6 | y | 400 | 65 | ||
| Generator turi |
3,15* | YH5WD-3,8/9,5 | 3.8 | 2.0 | 5.7 | 50 | 9.5 | 7.6 | 10.7 | 400 | 65 | ||||
| 3,15* | YH5WD-4/9.5 | 4 | 3.15 | 5.7 | 50 | y | y | y | 9.5 | 7.6 | 10.7 | 400 | 65 | ||
| 3,15* | YH5CD-3.8/8.6 | 3.8 | y |
y |
7.5 | 8.6 | 20 | 8.6 | 6.9 | 9.8 | 400 | 65 | |||
| Elektr dvigatel turi |
3,15* | YH2.5WD-3.8/9.5 | 3.8 | 2.0 | 5.7 | 50 | — | y |
9.5 | 7.6 | 10.7 | 200 | 65 | ||
| 3,15* | YH2.5WD-4/9.5 | 4 | 3.15 | 5.7 | 50 | y | y | y | 9.5 | 7.6 | 10.7 | 200 | 65 | ||
| 3,15* | YH2.5CD-3.8/8.6 | 3.8 | 7.5 | 8.6 | 20 | 8.6 | 6.9 | 9.8 | 200 | 65 | |||||
| Neytral nuqta turi |
3,15* | YH1.5W-2.4/6 | 2.4 | 1.9 | 3.4 | 50 | y | y | 6.0 | 5.0 | y | 200 | 65 | ||
Past bosim |
Tarqatish turi |
Tizim nominal kuchlanishi (kV) Samarali qiymat |
milliy standart modeli Yashin to'xtatuvchining |
nominal kuchlanishi to'xtatuvchining Chaqmoq ) (kV Samarali qiymat |
Bo'shliqsiz chaqmoq to'xtatuvchisi | Bo'shliq chaqmoq to'xtatuvchisi | Qoldiq bosim (kV) (Peak qiymat)Kam emas |
2000mks kvadrat to'lqinli oqim hajmi (A) |
4/10 yuqori oqim bardoshlik (kA) |
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| uzluksiz ish kuchlanishi Yashin to'xtatuvchining (kV) Samarali qiymat |
DC 1mA eferent kuchlanish (kV) kam emas dan |
maksimal oqim 0,75 marta doimiy mos yozuvlar kuchlanishida (mA) |
Quvvat chastotasi tushirish kuchlanishi (kV) Samarali qiymat Kam emas |
1,2/50 impulsli tushirish kuchlanishi (kV) Tepalik qiymati Kam emas |
Maksimal o'tkazuvchanlik oqimi (pA) |
ostida Yorqin impuls oqimi 8/20 |
ostida 30/60 operatsion impuls oqimi |
ostida 1/4 tik to'lqinli impuls oqimi |
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| 6kV | Tarqatish turi |
6 | YH5WS-7.6/30 | 7.6 | 4.0 | 15.0 | 50 | 30.0 | 25.6 | 34.6 | 75 | 40 | |||
| 6 | YH5WS-10/30 | 10 | 8.0 | 15.0 | 50 | y | 30.0 | 25.6 | 34.6 | 75 | 40 | ||||
| 6 | YH5CS-7.6/27 | 7.6 | y | 16.0 | 27.0 | 20 | 27.0 | 22.5 | 30.0 | 75 | 40 | ||||
| Elektr stantsiyasining turi |
6 | YH5WZ-7.6/27 | 7.6 | 4.0 | 14.4 | 50 | 27.0 | 23.0 | 31.0 | 200 | 65 | ||||
| 6 | YH5WZ-10/27 | 10 | 8.0 | 14.4 | 50 | y | 27.0 | 23.0 | 31.0 | 200 | 65 | ||||
| 6 | YH5CZ-7.6/24 | 7.6 | 16.0 | 24.0 | 20 | 24.0 | 20.4 | 27.0 | 200 | 65 | |||||
| Kapasitiv turi |
6 | YH5WR-7.6/27 | 7.6 | 4.0 | 14.4 | 50 | 27.0 | 21.0 | y | 400 | 65 | ||||
| 6 | YH5WR-10/27 | 10 | 8.0 | 14.4 | 50 | y | 27.0 | 21.0 | y | 400 | 65 | ||||
| 6 | YH5CR-7.6/24 | 7.6 | y | y | 16.0 | 24.0 | 20 | 24.0 | 19.5 | y | 400 | 65 | |||
| Generator turi |
6,3* | YH5WD-7.6/18.7 | 7.6 | 4.0 | 11.2 | 50 | y | 18.7 | 15.0 | 21.0 | 400 | 65 | |||
| 6,3* | YH5WD-8/18.7 | 8 | 6.3 | 11.2 | 50 | y | 18.7 | 15.0 | 21.0 | 400 | 65 | ||||
| 6,3* | YH5CD-7.6/17 | 7.6 | y | y | y | 15.0 | 17.0 | 20 | 17.0 | 13.8 | 19.6 | 400 | 65 | ||
| Elektr dvigatel turi |
6,3* | YH2.5WD-7.6/18.7 | 7.6 | 4.0 | 11.2 | 50 | 18.7 | 15.0 | 21.0 | 200 | 65 | ||||
| 6,3* | YH2.5WD-8/18.7 | 8 | 6.3 | 11.2 | 50 | y | y | y | 18.7 | 15.0 | 21.0 | 200 | 65 | ||
| 6,3* | YH2.5CD-7.6/17 | 7.6 | y | y | 15.0 | 17.0 | 20 | 17.0 | 13.8 | 19.6 | 200 | 65 | |||
| Neytral nuqta turi |
6,3* | YH1.5W-4.8/12 | 4.8 | 3.8 | 6.8 | 50 | y | 12.0 | 10.0 | y | 200 | 65 | |||
| 10kV | Tarqatish turi |
10 | YH5WS-12.7/50 | 12.7 | 6.6 | 25 | 50 | y | 50 | 42.5 | 57.5 | 75 | 40 | ||
| 10 | YH5WS-17/50 | 17 | 13.6 | 25 | 50 | — | y | y | 50 | 42.5 | 57.5 | 75 | 40 | ||
| 10 | YH5CS-12.7/45 | 12.7 | y | y | 26.0 | 45 | 20 | 45 | 38.4 | 51.0 | 75 | 40 | |||
| Elektr stantsiyasining turi |
10 | YH5WZ-12.7/45 | 12.7 | 6.6 | 24 | 50 | y | 45 | 38.3 | 51.8 | 200 | 65 | |||
| 10 | YH5WZ-17/45 | 17 | 13.6 | 24 | 50 | y | 45 | 38.3 | 51.8 | 200 | 65 | ||||
| 10 | YH5CZ-12.7/41 | 12.7 | y | y | 26.0 | 41 | 20 | 41 | 35.0 | 46.0 | 200 | 65 | |||
| Kapasitiv turi |
10 | YH5WR-12.7/46 | 12.7 | 6.6 | 24 | 50 | 46 | 35.0 | y | 400 | 65 | ||||
| 10 | YH5WR-17/46 | 17 | 13.6 | 24 | 50 | y | y | y | 46 | 35.0 | y | 400 | 65 | ||
| 10 | YH5CR-12.7/41 | 12.7 | 26.0 | 41 | 20 | 41 | 33.0 | y | 400 | 65 | |||||
| Generator turi |
10,5* | YH5WD-12.7/31 | 12.7 | 6.6 | 18.6 | 50 | 31 | 25 | 34.7 | 400 | 65 | ||||
| 10,5* | YH5WD-13,5/31 | 13.5 | 10.5 | 18.6 | 50 | y | 31 | 25 | 34.7 | 400 | 65 | ||||
| 10,5* | YH5CD-12.7/28 | 12.7 | 25.0 | 28.0 | 20 | 28 | 22.5 | 32.0 | 400 | 65 | |||||
| 13,8* | YH5WD-17,5/40 | 17.5 | 13.8 | 24.4 | 50 | 40.0 | 32.0 | 44.8 | 400 | 65 | |||||
| 15,75* | YH5WD-20/45 | 20.0 | 15.75 | 28.0 | 50 | y | 45.0 | 36.0 | 50.4 | 400 | 65 | ||||
| 18,0* | YH5WD-23/51 | 23.0 | 18.0 | 31.9 | 50 | 51.0 | 40.8 | 57.2 | 400 | 65 | |||||
| 20,0* | YH5WD-25/56.2 | 25.0 | 20.0 | 35.4 | 50 | 56.2 | 45.0 | 62.9 | 400 | 65 | |||||
| Elektr dvigatel turi |
10,5* | YH2.5WD-12.7/31 | 12.7 | 6.6 | 18.6 | 50 | 31 | 25 | 34.7 | 200 | 65 | ||||
| 10,5* | YH2.5WD-13.5/31 | 13.5 | 10.5 | 18.6 | 50 | y | 31 | 25 | 34.7 | 200 | 65 | ||||
| 10,5* | YH2.5CD-12.7/28 | 12.7 | y | y | y | 25.0 | 28.0 | 20 | 28 | 22.5 | 32.0 | 200 | 65 | ||
| Neytral nuqta turi |
10,5* | YH1.5W-8/191.3 | 8 | 6.4 | 11.4 | 50 | 19.0 | 15.9 | 400 | 65 | |||||
| 13,8* | YH1.5W-10.5/23 | 10.5 | 8.4 | 14.9 | 50 | 23.0 | 19.2 | y | 400 | 65 | |||||
| 15,75* | YH1.5W-12/26 | 12 | 9.6 | 17.0 | 50 | 26.0 | 21.6 | y | 400 | 65 | |||||
| 18,0* | YH1.5W-13.7/29.2 | 13.7 | 11.0 | 19.5 | 50 | 29.2 | 24.3 | y | 400 | 65 | |||||
| 20,0* | YH1.5W-15.2/31.7 | 15.2 | 12.2 | 21.6 | 50 | y | 31.7 | 26.4 | y | 400 | 65 | ||||
Past bosim |
Tarqatish turi |
Tizim nominal kuchlanishi (kV) Samarali qiymat |
milliy standart modeli Yashin to'xtatuvchining |
nominal kuchlanishi to'xtatuvchining Chaqmoq ) (kV Samarali qiymat |
Bo'shliqsiz chaqmoq to'xtatuvchisi | Chaqmoqni to'xtatuvchi | Qoldiq bosim(kV (Peak qiymat)Kam emas |
2000mks kvadrat to'lqinli oqim hajmi (A) |
4/10 yuqori oqim bardoshlik (kA) |
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| uzluksiz ish kuchlanishi Chaqmoq to'xtatuvchining (kV) Samarali qiymat |
DC 1mA mos yozuvlar kuchlanishi (kV) kam emas dan |
maksimal oqish 0,75 marta shahar mos yozuvlar kuchlanishida (mA) |
Quvvat chastotasini tushirish kuchlanishi (kV) Samarali qiymat Kam emas |
1,2/50 impulsli tushirish kuchlanishi (kV) Tepalik qiymati Kam emas |
Maksimal o'tkazuvchanlik oqimi (mA) |
ostida chaqmoq impuls oqimi 8/20 da |
Unde 30/60 ishlaydigan impuls oqimi |
ostida 1/4 tik to'lqinli impuls oqimi |
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| 35 kV | Elektr stantsiyasining turi |
35 | YH5WZ-51/134 | 51 | 40.8 | 73 | 50 | 134 | 114 | 154 | 400 | 65 | |||
| 35 | YH5WZ-42/134 | 42 | 23.4 | 73 | 50 | y | 134 | 114 | 154 | 400 | 65 | ||||
| 35 | YH5CZ-42/124 | 42 | 80.0 | 124 | 20 | 124 | 100 | 143 | 400 | 65 | |||||
| Kapasitiv turi |
35 | YH5WR-51/134 | 51 | 40.8 | 73 | 50 | 134 | 105 | 400 | 65 | |||||
| 35 | YH5WR-42/134 | 42 | 23.4 | 73 | 50 | y | 134 | 105 | y | 400 | 65 | ||||
| 35 | YH5CR-42/124 | 42 | 80.0 | 124 | 20 | 124 | 100 | y | 400 | 65 | |||||
| Chiziq turi |
35 | YH5WX-51/134 | 51 | 40.8 | 73 | 50 | 134 | 114 | 154 | 400 | 65 | ||||
| 35 | YH5WX-54/150 | 54 | 43.2 | 77 | 50 | y | 150 | 128 | 169 | 400 | 65 | ||||
| 35 | YH5CX-42/120 | 42 | y | y | 80.0 | 120 | 20 | 120 | 100 | 138 | 400 | 65 | |||
| 35 | YH5CX-42/150 | 42 | y | 80.0 | 150 | 20 | 150 | 128 | 169 | 400 | 65 | ||||
| Neytral nuqta turi |
35 | YH1.5W-30/80 | 30 | 24 | 44 | 50 | y | 80 | 67.5 | y | 400 | 65 | |||
| 66 kV | Elektr stantsiyasining turi |
66 | YH5WZ-84/221 | 84 | 67.2 | 121 | 50 | y | 221 | 188 | 254 | 600 | 65 | ||
| 66 | YH5WZ-90/235 | 90 | 72.5 | 130 | 50 | 235 | 201 | 270 | 600 | 65 | |||||
| 66 | YH10WZ-84/221 | 84 | 67.2 | 121 | 50 | 221 | 188 | 248 | 600 | 100 | |||||
| 66 | YH10WZ-90/235 | 90 | 72.5 | 130 | 50 | y | 235 | 201 | 264 | 600 | 100 | ||||
| Chiziq turi |
66 | YH5WX-96/250 | 96 | 75 | 140 | 50 | y | 250 | 213 | 288 | 600 | 65 | |||
| 66 | YH5WX-96/275 | 96 | 75 | 154 | 50 | 275 | 234 | 316 | 600 | 65 | |||||
| 110kV | Elektr stantsiyasining turi |
110 | YH5WZ-100/260 | 100 | 78 | 145 | 50 | y | 260 | 221 | 299 | 600 | 65 | ||
| 110 | YH5WZ-102/266 | 102 | 79.6 | 148 | 50 | y |
266 | 226 | 305 | 600 | 65 | ||||
| 110 | YH5WZ-108/281 | 108 | 84 | 157 | 50 | 281 | 239 | 323 | 600 | 65 | |||||
| 110 | YH10WZ-100/260 | 100 | 78 | 145 | 50 | y | 260 | 221 | 291 | 600 | 100 | ||||
| 110 | YH10WZ-102/266 | 102 | 79.6 | 148 | 50 | y | 266 | 226 | 297 | 600 | 100 | ||||
| 110 | YH10WZ-108/281 | 108 | 84 | 157 | 50 | 281 | 239 | 315 | 600 | 100 | |||||
| Chiziq turi |
110 | YH5WX-108/281 | 108 | 84 | 157 | 50 | y | 281 | 239 | 323 | 600 | 65 | |||
| 110 | YH5WX-108/309 | 108 | 84 | 173 | 50 | y | 309 | 263 | 348 | 600 | 65 | ||||
| 110 | YH10WX-108/281 | 108 | 84 | 157 | 50 | y | 281 | 239 | 315 | 600 | 100 | ||||
| 110 | YH10WX-108/309 | 108 | 84 | 173 | 50 | 309 | 263 | 348 | 600 | 100 | |||||
| 110 | YH5CX-90/260 | 90 | y | 130 | 50 | 170* | 525* | 260 | y | 292 | 600 | 65 | |||
| 110 | YH10CX-90/260 | 90 | y | 130 | 50 | 170* | 525* | 260 | 292 | 600 | 100 | ||||
| 110 | YH10CX-96/280 | 96 | y | 140 | 50 | 170* | 525* | 280 | y | 314 | 600 | 100 | |||
| 110 | YH10CX-102/296 | 102 | y | 148 | 50 | 170* | 525* | 296 | y | 332 | 600 | 100 | |||
| Neytral nuqta turi |
110 | YH1.5W-60/144 | 60 | 48 | 85 | 50 | y |
144 | 135 | y | 400 | 65 | |||
| 110 | YH1.5W-72/186 | 72 | 58 | 103 | 50 | 186 | 174 | y | 400 | 65 | |||||
| 220 kV | Elektr stantsiyasining turi |
220 | YH10WZ-192/500 | 192 | 150 | 280 | 50 | y | 500 | 426 | 560 | 800 | 100 | ||
| 220 | YH10WZ-200/520 | 200 | 156 | 290 | 50 | y | 520 | 442 | 582 | 800 | 100 | ||||
| 220 | YH10WZ-204/532 | 204 | 159 | 296 | 50 | 532 | 452 | 594 | 800 | 100 | |||||
| 220 | YH10WZ-216/562 | 216 | 168.5 | 314 | 50 | 562 | 478 | 630 | 800 | 100 | |||||
| Chiziq turi |
220 | YH10WX-216/562 | 216 | 168 | 314 | 50 | y | 562 | 478 | 630 | 600 | 100 | |||
| 220 | YH10WX-216/618 | 216 | 168 | 346 | 50 | 618 | 526 | 693 | 600 | 100 | |||||
| 220 | YH10CX-185/520 | 180 | 260 | 50 | 340* | 900* | 520 | 584 | 600 | 100 | |||||
| 220 | YH10CX-192/560 | 192 | y | 280 | 50 | 340* | 900* | 560 | y | 628 | 600 | 100 | |||
| 220 | YH10CX-204/592 | 204 | y | 296 | 50 | 340* | 900* | 592 | y | 664 | 600 | 100 | |||
| Neytral nuqta turi |
220 | YH1.5W-144/320 | 144 | 116 | 205 | 50 | 320 | 299 | 600 | 65 | |||||
| 27,5 kV | Temir yo'l turi |
27.5 | YH5WT-42/120 | 42 | 34 | 65 | 50 | y | 120 | 98 | 138 | 400 | 65 | ||
| 55 kV | 55 | YH5WT-84/240 | 84 | 68 | 130 | 50 | y | 240 | 276 | 276 | 400 | 65 | |||
◇ An'anaviy mahsulotlar uchun odatiy foydalanish shartlari quyidagilardan iborat:
(1) Atrof-muhit harorati: +40 ℃ dan yuqori emas va -40 ℃ dan past emas;
(2) Balandlik: 3000 m dan oshmasligi;
(3) Quvvat chastotasi: 50±2Hz;60±2Hz;
(4) Maksimal shamol tezligi: 35m/s;
(5) Bepul tozalash shartlari: o'rtacha ifloslangan va undan past bo'lgan joylar;
(6) Choksiz mahsulotlar uchun quvvat chastotasi kuchlanishining uzoq muddatli qo'llanilishi boshpana doimiy ish kuchlanishidan oshmasligi kerak;
(7) Bo'shliqlari bo'lgan mahsulotlar uchun o'rnatish nuqtasida quvvat chastotasi kuchlanishining qisqa muddatli oshishi chaqmoq to'xtatuvchining nominal kuchlanishidan oshmasligi kerak.
◇ Yildirim to'xtatuvchilari quyidagi g'ayritabiiy sharoitlarda uzoq muddatli foydalanish uchun maxsus ishlab chiqarilishi kerak va buyurtma berishda ko'rsatilishi kerak:
(1) Standartdan yuqori harorat yoki balandlik (masalan, baland tog'li, tropik, sovuq hududlarda, to'liq yopiq shkaflar, elektr pechlar yaqinida va hokazo);
(2) Foydalanish muhitida kuchli namlik yoki korroziy gaz aralashmalari (suv, sho'r konlar, kimyo zavodlari va boshqalar) mavjud;
(3) Kuchli ultrabinafsha nurlanish (masalan, baland tog'larda, quruq va kuchli quyosh nuri bo'lgan erta joylarda va boshqalar);
(4) Haddan tashqari ifloslangan joylar (masalan, tog'-kon sanoati, qurilish maydonchasi ishchi yuzalari va boshqalar).
Ushbu mahsulotning model ta'rifi JB/T 8459-2006 'Chaqmoqni to'xtatuvchi mahsulot modellarini tuzish usuli' qoidalariga to'liq mos keladi. Modelning maxsus tavsifi quyidagicha:
