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Sistem Perlindungan Transformer 745 adalah geganti pengurusan transformer berkelajuan tinggi, berasaskan berbilang pemproses, tiga fasa, dua atau tiga belitan, yang bertujuan untuk perlindungan utama dan pengurusan pengubah kuasa kecil, sederhana dan besar. 

Spesifikasi teknikal:

  • Pengubah: Dua belitan atau tiga belitan
  • Kekerapan: 50 atau 60 Hz nominal
  • Penjejakan Kekerapan:
    • 40 hingga 65 Hz untuk 0.05 × CT
    • 5 hingga 65 Hz untuk arus > 1 × CT
    • 2 hingga 65 Hz untuk voltan > 50% daripada VT (hanya jika penderiaan voltan didayakan)

KUASA KAWALAN

  • Pilihan: LO/HI (dinyatakan semasa membuat pesanan)
  • Julat LO: 20 hingga 60 V DC; 20 hingga 48 V AC pada 48 hingga 62 Hz
  • Julat HI: 90 hingga 300 V DC; 70 hingga 265 V AC pada 48 hingga 62 Hz
  • Kuasa: 30 VA nominal, 40 VA maksimum
  • Jumlah kehilangan masa tunggang voltan (0% kuasa kawalan): 16.7 ms
  • Penilaian Arus Fius: 3.15A (fius tidak boleh diakses)
  • Jenis Fius: 5 × 20 mm tiupan perlahan Littelfuse, kapasiti pecah yang tinggi; model 2153.15

INPUT ARUS FASA

  • CT Sumber: 1 hingga 50000 A primer; 1 atau 5 A menengah
  • Input Geganti: 1 A atau 5 A (dinyatakan pada pesanan)
  • Beban: Kurang daripada 0.2 VA pada beban berkadar setiap fasa
  • Julat Penukaran: 0.02 hingga 46 × CT pada frekuensi nominal 50/60 Hz
  • Ketepatan:
    • Pada <4 × CT: ±0.25% daripada 4 × CT (±0.01 × CT) pada frekuensi nominal 50/60 Hz
    • Pada ≥ 4 × CT: ±0.5% daripada 46 × CT (±0.2 × CT) pada frekuensi nominal 50/60 Hz
  • Tahan Beban Lebihan: 1 saat pada 80 kali nilai arus; 2 saat pada 40 kali nilai arus; berterusan pada arus terkadar 3 kali

INPUT ARUS TANAH

  • Sumber CT: 1 hingga 50000 A rendah, 1 atau 5 A menengah
  • Input Geganti: 1 A atau 5 A (dinyatakan pada pesanan)
  • Beban: Kurang daripada 0.2 VA pada beban berkadar
  • Julat Penukaran: 0.02 hingga 46 × CT
  • Ketepatan:
    • Pada <4 × CT: ±0.25% daripada 4 × CT (±0.01 × CT)
    • Pada ≥ 4 × CT: ±0.5% daripada 46 × CT (±0.2 × CT)
  • Tahan Beban Lebihan: 1 saat pada 80 kali nilai arus; 2 saat pada 40 kali nilai arus; berterusan pada arus terkadar 3 kali

INPUT VOLTAN

  • VT Sumber: 2 hingga 600 kV / 60 hingga 120 V
  • Nisbah VT Sumber: 1 hingga 5000 dalam langkah 1
  • Input Geganti: 60 hingga 120 V fasa neutral
  • Beban: Kurang daripada 0.025 VA pada 120 V
  • Input Berterusan Maksimum: 273 V
  • Input Ketepatan Maksimum: 260 V (skala penuh)
Is our price competitive?
Topbrands collaborates with over 50 countries worldwide. As a leading supplier in China, we can provide significant discounts to customers based on market demand.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
What payment methods do we accept?
We accept 100% T/T (Telegraphic Transfer) before shipping. For items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. If you have an agent in China, please contact us for RMB transfer.
What is the warranty period?
We offer a standard one-year warranty for all new and original items.
What shipping methods do we use?
We primarily utilize carriers such as FedEx, DHL, UPS, BRE, etc. If you have an account with any of these carriers, you can arrange the shipping yourself. Additionally, we offer free shipping to China freight forwarders.
What is our delivery time?
Typically, delivery takes around 1-3 days after receiving the advance payment. For items with a quoted lead time, delivery will occur as per the specified lead time.
How do we package the goods?
Our packaging process involves multiple layers of protection. Initially, the product is placed in its original box, sealed with a label. Then, we add a layer of bubble wrap to safeguard against collisions during transportation. Finally, all products are securely packed in sturdy boxes for further protection.
How can customers contact us and request a quote?
Customers can inquire via email, WhatsApp, WeChat, Skype, or any preferred communication platform. Simply reach out to us, and we'll promptly provide a quote tailored to your needs.

Topbrands PLC Limited is a top supplier of genuine new PLC and DCS parts, serving over 50 countries globally. We offer high-quality products from renowned brands like Bently Nevada, Honeywell, ABB, and more. With our warehouse in China stocking up to 30,000 pieces, we ensure rapid delivery to meet urgent order needs while maintaining competitive pricing to save our customers' budgets. Learn more...

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