Dead‑tank SF6 circuit‑breaker. Rated 126/145kV, 3150A, 40kA short‑time withstand current. Spring‑operated mechanism, factory pre‑assembled unit, compact footprint for indoor/outdoor installation, 10 000 mechanical operations.
This document describes dead‑tank SF₆ circuit‑breaker complying with IEC 62271‑100 international standard for high‑voltage AC circuit‑breakers. It fully covers structural‑working principles, operating‑environment requirements, scope of supply, packaging‑transport‑storage guidance, on‑site installation‑commissioning procedures, periodic maintenance & overhaul criteria and decommissioning instructions.
The equipment adopts earthed metal modular tank‑type construction, integrates through‑core built‑in current transformers and self‑energy arc‑extinguishing technology, fitted with spring operating mechanism equipped with both mechanical and electrical anti‑pumping protection. Delivered as a complete factory‑assembled unit without requirement for on‑site gas‑chamber disassembly.
It supports indoor, outdoor and rooftop deployment for power‑plant, substation and heavy‑industry power‑transmission projects. The manual also includes SF₆ gas property appendix, step‑by‑step installation workflow, commissioning‑inspection check‑items, graded maintenance schedule and overhaul trigger conditions, together with delivery‑document checklist.
Service boundaries including altitude, temperature‑humidity, seismic acceleration and pollution class are clearly stated. Complete‑unit replacement helps minimise outage duration during repair, delivering comprehensive technical reference for specification, site construction and daily operation‑maintenance.
Dead Tank SF6 Circuit Breaker (115kV-170kV) offers high reliability and efficient arc extinguishing. Its robust design ensures stable power system protection.
Dead Tank SF6 Circuit Breaker provides reliable AC power interruption and superior insulation for stable high-voltage power grids.
High reliability dead tank SF6 circuit breaker for 40.5kV to 170kV, delivering robust protection for high-voltage transmission and substation applications.
Pembongkaran tangki TIDAK diperlukan untuk komisioning normal. Perakitan, perlakuan vakum, dan pengisian SF6 telah diselesaikan di pabrik. Hanya pemeriksaan kebocoran dan penyesuaian tekanan terkoreksi suhu yang harus dilakukan di lokasi. Pembongkaran tangki hanya diperlukan untuk perbaikan kebocoran, guna mencegah kontaminasi internal dari lingkungan lokasi.
Relai densitas dilengkapi dengan kompensasi suhu. Alarm penambahan gas dipicu pada ambang batas tekanan menengah sebagai pengingat untuk pengisian ulang. Ketika tekanan turun lebih lanjut ke titik setel penguncian, sirkuit pemutusan akan terblokir (penutupan tetap tersedia). Pemutusan arus gangguan harus dihindari; penelusuran masalah kebocoran dan pengisian ulang SF6 harus segera dilakukan.
Unit standar beroperasi pada ‑40℃~+40℃. SF6 mencair pada suhu lingkungan yang sangat rendah, menurunkan densitas gas serta menurunkan kinerja pemadaman busur & isolasi, memicu penguncian. Pemesanan khusus dengan tindakan anti-pencairan wajib untuk lokasi beriklim sangat dingin, versi standar tidak dapat langsung digunakan.
10.000 siklus merepresentasikan ketahanan mekanis tanpa beban. Interupsi arus pendek mengikis kontak. Jumlah pemutusan gangguan yang diizinkan bergantung pada besaran arus pendek. Overhaul besar harus dijadwalkan setelah mencapai batas pemutusan arus pendek yang sesuai.
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