ZN12-12(40.5) is a 12kV/40.5kV indoor AC high voltage vacuum circuit breaker with vacuum arc extinguishing structure. Featuring reliable breaking performance, long service life and low maintenance, it is widely used in power plants, substations and industrial high-voltage distribution systems.
The ZN12-12(40.5) is a three-phase AC 50Hz indoor high-voltage vacuum circuit breaker, covering two voltage levels: 12kV and 40.5kV.
It adopts advanced vacuum arc-extinguishing technology, which has the advantages of strong breaking capacity, long electrical and mechanical life, and no environmental pollution.
It is mainly used for control and protection of power transmission and distribution equipment in power plants, substations, industrial and mining enterprises, and other places, and is especially suitable for occasions requiring frequent operation.
1. Ketinggian: 1000m;
2. Suhu sekitar: -25 ~ +40 ;
3. Kelembaban relatif: rata-rata harian 95, rata-rata bulanan 90;
4. Intensitas gempa: 8 derajat;
5. Acara yang berlaku harus bebas dari bahan mudah terbakar, bahan peledak, korosif, dan getaran yang parah.
1. Kapasitas pemutusan ruang pemadam busur api tinggi, daya dukung arus rendah, dan masa pakai listrik panjang.
2. tata letak dari depan ke belakang, struktur sederhana dan kompak, pengoperasian lengkap dan perawatan mudah.
3. Untuk struktur dan pemasangan, mereka dapat dibagi menjadi: Tipe tetap horizontal, tipe tetap miring, tipe bergerak set tengah.
|
Nama Parameter
|
Specification (12kV)
|
Specification (40.5kV)
|
|---|---|---|
|
Tegangan Pengenal
|
12kV
|
40.5kV
|
|
Frekuensi yang dinilai
|
50Hz
|
50Hz
|
|
Nilai Saat Ini
|
630A, 1250A, 1600A, 2000A
|
630A, 1250A, 1600A, 2000A
|
|
Rated Short-Circuit Breaking Current
|
20kA, 25kA, 31.5kA, 40kA
|
20kA, 25kA, 31.5kA, 40kA
|
|
1min Power Frequency Withstand Voltage
|
42kV
|
95kV
|
|
Lightning Impulse Withstand Voltage (Peak)
|
75kV
|
185kV
|
|
Operating Mechanism
|
Spring Energy Storage Type (AC/DC Dual-Use, Manual Optional)
|
Spring Energy Storage Type (AC/DC Dual-Use, Manual Optional)
|
|
Mechanical Life
|
≥10,000 Times
|
≥10,000 Times
|
| S/N | Item | Unit | Data | ||||
|---|---|---|---|---|---|---|---|
| 1 | Dinilai
tegangan |
kV | 12 | ||||
| 2 | Tingkat isolasi yang dinilai | Daya 1 menit
frekuensi tahan tegangan |
42 | ||||
| Petir
impuls tahan tegangan |
75 | ||||||
| 3 | Frekuensi yang dinilai | Hz | 50 | ||||
| 4 | Nilai saat ini | A | 6301250
1600 |
12501600
2000 2500 3150 |
12501600
2000 2500 3150 |
20002500
3150 4000 |
|
| 5 | Nilai arus pemutusan hubung singkat | kA | 20/25 | 31.5 | 40 | 50 | |
| 6 | Waktu singkat 4 detik menahan arus | 20/25 | 31.5 | 40/3s | 50/3s | ||
| 7 | Nilai arus pembuatan hubung singkat (puncak) | 50/63 | 80 | 100 | 125 | ||
| 8 | Nilai arus tahan puncak yang dinilai (puncak) | 50/63 | 80 | 100 | 125 | ||
| 9 | Waktu pemutusan arus pemutusan hubung singkat terukur | kali | 50 | 30 | |||
| 10 | Kehidupan mekanis | 10000 | 6000 | ||||
| 11 | Waktu penutupan | ms | ≤75 | ||||
| 12 | Waktu buka | ≤65 | |||||
| 13 | Jarak pusat fase | mm | 210、230、250、275 | ||||





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