LW30-126 Outdoor Sulfur Hexafluoride Circuit Breaker
Production Introduction
Overview:
LW30-126 Outdoor Sulfur Hexafluoride Circuit Breaker is a three-phase AC 50Hz outdoor high voltage switchgear, suitable for the control and protection of 126kV power transmission and transformation system; It can also be used as a contact circuit breaker and when opening and closing capacitor banks
Structure:
LW30-126 Outdoor Sulfur Hexafluoride Circuit Breaker adopts self-energy arc extinguishing principle, makes full use of the thermal effect of the arc to increase the pressure of sulfur hexafluoride gas in the pressure cylinder, so that the circuit breaker needs to reduce the operating work required when breaking the short-circuit current, equipped with full spring operating mechanism, the main technical and performance parameters of the product have reached the contemporary international advanced level.
Advantage:
1. The arc extinguishing chamber of the circuit breaker adopts the principle of self-energy arc extinguishing, which has large breaking capacity and long electrical life.
2. The circuit breaker is equipped with CT26 spring operation mechanism, which has simple and compact structure, high reliability, less maintenance workload, and mechanical life of up to 10,000 times, which meets the requirements of "no oil".
3. The sealing structure adopts the design of double O-ring sealing, and the air leakage rate of the product is controlled within 0.3%, which is higher than the national standard requirements of 0.5%.
Specification
The main technical parameters of circuit breakers：
| No. | Item | Unit | Data | ||
| 1 | Rated Voltage | kV | 126 | ||
| 2 | Rated Insulation(1min power frequency withstand voltage) | kV | 550 + 100 | ||
| 3 | Rated Insulation(Rated lightning impulse withstand voltage) | kV | 230 + 70 | ||
| 4 | Rated Frequency | Hz | 50 | ||
| 5 | Rated Current | A | 3150 | ||
| 6 | Rated short-circuit breaking current | kA | 40 | ||
| 7 | Rated order of operations | / | O-0.3S-CO-180S-CO | ||
| 8 | The number of times (rated short-circuit breaking currents) | t | 20 | ||
| 9 | Rated short-circuit opening and closing current（Peak） | kA | 100 | ||
| 10 | Rated peak withstand current | kA | 100 | ||
| 11 | Rated withstand current for short periods | kA | 40 | ||
| 12 | Rated short circuit duration | s | 4 | ||
| 13 | Rated operation voltage | V | DC220 | ||
| 14 | Rated pressure | Mpa | 0.50 | ||
| 15 | SF6 gas alarm pressure（20℃） | Mpa | 0.43 | ||
| 16 | SF6 gas closing pressure（20℃） | Mpa | 0.40 | ||
| 17 | Annual gas leakage rate of SF6 | /year | ≤0.3% | ||
| 18 | SF6 gas moisture content | μL/L | ≤150 | ||
| 19 | Mechanical Lifetime | t | 10000 | ||
Prodection details
Product outline and installation dimensions：
（Unit:mm）
Company Profile
Shaanxi Huadian Electric Co., Ltd. is a professional manufacturer of vacuum tubes, ring network cabinets, inflatable cabinets, high voltage fuses, vacuum circuit breakers. The company has the equipment and testing equipment required for the production of vacuum devices, and also has professional and technical personnel engaged in the research and production of vacuum devices and a team with rich manufacturing experience and high quality, reasonable product design, advanced technology, strict inspection, fast research and development speed, and stable product quality.
Shaanxi Huadian products have been widely used in power plants, metallurgy, petrochemicals, railways, mines, radio and television, urban construction and rural power grid reconstruction projects, and are well received by users for their high-quality products and services.
The marketing network covers most provinces and more than ten countries such as Southeast Asia, West Asia and the Middle East.
At a long time ago, the company has passed the IS09001 quality management system, Shengao electrical products not only sold domestically, but also began to gradually enter the foreign market, and won wide recognition and praise from customers.
We promise to customers: not only to provide products, but also to provide solutions and perfect after-sales service to make customers rest assured and satisfied. All employees of the company are willing to wholeheartedly provide high-quality products and high-quality services for the majority of users.
Production Workshop
Prodect qualification
Certifications
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