Dead Tank SF6 Circuit Breaker Original Manufacturer-115kV to 170kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | Dead Tank SF6 Circuit Breaker Original Manufacturer-115kV to 170kV |
| Rated voltage | 170kV |
| Rated normal current | 1600A |
| Rated frequency | 50/60Hz |
| Rated short circuit breaking current | 25kA |
| Series | RHD |
Description
Description：
The115kV 123kV 145KV 161kV 170kV dead tank SF6 circuit breaker is a high-reliability high-voltage device designed to ensure stable operation of power systems. It adopts a dead tank structure, with live parts sealed in a metal casing filled with SF6 gas, ensuring rapid arc extinction and efficient fault current interruption to safeguard grid safety. The low-center-of-gravity design gives it strong seismic resistance, adapting to harsh environments such as extreme climates. The equipment integrates bushings and current transformers to support multi-functional control such as measurement and protection. With long mechanical/electrical life and a sealed structure, maintenance frequency is significantly reduced. Equipped with anti-misoperation interlocking devices, it ensures the safety of personnel and equipment. Widely used in power, metallurgy, transportation and other fields, it performs excellently in medium and high voltage scenarios.
Product Advantages：
The spring operating mechanism of the circuit breaker is safe and stable, maintenance-free, and highly reliable, and meets the requirements of oil-free and gas-free operating mechanism.
Self-energy-compressed combined arc extinguisher.
The equipment is shipped after the lightning impact test, which eliminates the hidden danger of insulation discharge caused by production and assembly, and ensures the stable and reliable product quality.
The quality of the insulators is stable and reliable.
High parameterization: The technical parameters of the products are all of the highest standards in the industry.
The domestic first-class design team, suppliers and internal control system ensure the safety, stability and reliability of the products, and the products and inspection standards manufactured in the factory have been recognized by the State Grid and the Southern Power Grid Supervision.
Using advanced R&D tools such as finite element analysis software, functional analysis, whole-process quality characteristic chain, size chain analysis, potential failure mode and effect analysis (FEMA), etc., the modular design is realized on the basis of ensuring the safety, stability and reliability of product performance.
Earthquake resistance of magnitude 9.
Product features:
Spring operating mechanism, reliable performance;
Excellent breaking performance
E2-M2-C2 circuit breaker, electrical life 20 times, mechanical life 10000 times.
Strong rated flow capacity;
Excellent insulation level, small local discharge;
Excellent corrosion resistance;
Advanced design tools;
Strict process assembly and quality control.
Use of the environment:
Installation location: indoor/outdoor;
Ambient air temperature :
Maximum temperature: +55°C;
Minimum temperature: -40°C; Maximum daily temperature difference: 32 K;
Altitude: ≦3000m;
Sunshine intensity (noon on sunny day): 1000 W/㎡;
Pollution level: III./IV. grade;
Icing thickness: 10mm/20mm;
Wind speed/wind pressure: 34m/s (equivalent to 700Pa on the surface of the cylinder);
Humidity: average daily relative humidity: ≦95%; Monthly average relative humidity: ≦90%;
Earthquake resistance: nine degrees;
Horizontal acceleration: 0.3g;
Vertical acceleration: 0.15g.
Use of the product:
In densely populated areas, in harmony with existing buildings, in important and critical substations, in confined space substation expansions, in flexible retrofits and replacements, in places with heavy loads, for economical and reliable energy management, in power stations, etc.
LW58A-126/145 SF6 canister circuit breaker is one of the new generation of switchgear of Shanghai Siyuan High Voltage Switchgear Co., Ltd., which has won the trust of users with its compact design and reliable performance.
Documentation Resource Library Dead Tank Circuit Breaker
FAQ for Dead Tank Circuit Breaker
Live tank breakers are well-suited for outdoor high-voltage distribution with a dispersed layout. Dead tank breakers flexibly adapt to both indoor and outdoor applications, especially in space-constrained substations or where compact installation is required.
The core difference is the arc-extinguishing medium. A VCB uses a high vacuum inside a sealed ceramic or glass envelope — the vacuum rapidly diffuses ions and metal vapor after current zero, achieving arc extinction in <10 ms. An SF₆ CB uses sulfur hexafluoride gas, which has strong electron affinity — it captures free electrons to form heavy negative ions, quickly depleting the arc channel's conductivity.
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