745 Transformatorni himoya qilish tizimi kichik, oʻrta va katta quvvat transformatorlarini birlamchi himoya qilish va boshqarish uchun moʻljallangan, yuqori tezlikdagi, koʻp protsessorli, uch fazali, ikki yoki uch oʻrashli transformator boshqaruv relesidir.
Texnik spetsifikatsiyalar:
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Transformatorlar: Ikki yoki uch o'ramli
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Chastotasi: 50 yoki 60 Gts nominal
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Chastotani kuzatish:
- 0,05 × CT
- 5 dan 65 Hz gacha oqim > 1 × CT uchun
- 2 dan 65 Gts gacha kuchlanish uchun > 50% VT (faqat kuchlanishni sezish yoqilgan bo'lsa)
KUCHNI BOSHQARISH
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Variantlar: LO/HI (buyurtma berishda ko'rsatiladi)
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LO diapazoni: 20 dan 60 V gacha shahar; 20 dan 48 V gacha o'zgaruvchan tok 48 dan 62 Gts gacha
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HI diapazoni: 90 dan 300 V gacha shahar; 48 dan 62 Gts gacha bo'lgan 70 dan 265 V gacha o'zgaruvchan tok
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Quvvat: 30 VA nominal, maksimal 40 VA
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Kuchlanishdan o'tish vaqtining umumiy yo'qolishi (nazorat quvvati 0%): 16,7 ms
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Sug'urta oqimining reytingi: 3,15A (sug'urtaga kirish imkoni yo'q)
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Sug'urta turi: 5 × 20 mm sekin zarba Littelfuse, yuqori uzilish qobiliyati; 2153.15 modeli
FAZALIK KIRISH
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Manba KT: 1 dan 50000 A gacha; 1 yoki 5 A ikkinchi darajali
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O'rni kiritish: 1 A yoki 5 A (buyurtmada ko'rsatilgan)
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Yuk: Har bir fazada nominal yukda 0,2 VA dan kam
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Konversiya diapazoni: 50/60 Gts nominal chastotada 0,02 dan 46 × CT gacha
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Aniqlik:
- <4 × CT da: 50/60 Gts nominal chastotada 4 × CT (± 0,01 × CT) ning ±0,25%
- ≥ 4 × CT da: 50/60 Gts nominal chastotada 46 × CT (± 0,2 × CT) ning ±0,5%
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Haddan tashqari yuklarga bardosh berish: 80 marta nominal oqimda 1 soniya; 40 marta nominal oqimda 2 soniya; 3 marta nominal oqimda uzluksiz
YERGA TOKINI KIRISH
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Manba KT: 1 dan 50000 A gacha birlamchi, 1 yoki 5 A ikkilamchi
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O'rni kiritish: 1 A yoki 5 A (buyurtmada ko'rsatilgan)
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Yuk: Nominal yukda 0,2 VA dan kam
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Konversiya diapazoni: 0,02 dan 46 × CT gacha
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Aniqlik:
- <4 × KTda: 4 × KTning ±0,25% (±0,01 × KT)
- ≥ 4 × KTda: 46 × KTning ±0,5% (±0,2 × KT)
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Haddan tashqari yuklarga bardosh berish: 80 marta nominal oqimda 1 soniya; 40 marta nominal oqimda 2 soniya; 3 marta nominal oqimda uzluksiz
VOLTAJ KIRISHLARI
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Manba VT: 2 - 600 kV / 60 - 120 V
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Manba VT nisbati: 1 dan 5000 gacha
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Rele kirishi: 60 dan 120 V gacha fazali neytral
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Yuk: 120 V da 0,025 VA dan kam
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Maksimal doimiy kirish: 273 V
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Maksimal aniqlik kiritish: 260 V (to'liq o'lchamli)
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