The circuit breakers are all equipped with pure spring operating mechanisms which makes structure simple and highly reliable. The mechanical endurance for the operating mechanism is over 10000 times , and it is convenient for maintenance and meets mechanism's requirements for oil free and air free. It uses self-energy arc-extinguishing principle, and reduces operation power of the mechanism and enhance operational reliability of product.
The flanges adopt dual-seal structural design, the outer seal ring is water-proof and inner seal ring is gas proof. Therefore, it can reduce the leakage of the product greatly and makes the product more suitable for outdoor operation.
Service Environment:
1.Ambient temperature: -40 ºC to +55 ºC.
2.Daily average ambient air relative humidity ≤95%, on average ≤90%
3. Wind pressure: less than 700pa.
4.Alti tude: less than 3000m.
5. Earthquake intensity: not more than 9 degrees.
6. Air Contamination: grade.
- Dead Tank type , 3 phase , outdoor usage
- rated voltage : 72.5 KV
- Rated current : 1250 A
- Rated frequency : 50 or 60 hz
- Insulation medium : SF6 gas
- 1 min. power frequency withstand voltage : 140KV
- Rated lightning impulse withstand voltage : 325KV
- Rated short circuit breaking current : 25 ~ 40 kA
- Rated short circuit breaking current(Peak value) : 63 ~ 100 kA
- rated short duration : 3S
- Rated out-of phase breaking current : 10kA
- Rated cable(line) charging breaking current : 10kA
- Rated gas pressure: 0.4 Mpa
- operation sequency : O-0.3s-CO-180s-CO
- SF6 gas leakage rate (per year): ≤1%
- First pole factor: 1.5
- Main loop resistance: ≤40μΩ
- Heater voltage: AC 220V
- Control circuit and signal circuit Voltage: DC110, DC220, DC230V
- Motor voltage: DC110V, DC 220V
Company Introduction
Zhongshao Electrical Incorporated Co., Ltd, a beacon of innovation and excellence since April 7, 2013,is strategically nestled in the prestigious Zhongshao Industrial Park of Shaoshan High-tech Industrial Development Zone, Hunan Province.
As a distinguished technology company and esteemed national high-tech enterprise, we are dedicated to the pioneering research, development, production, sales, and service of comprehensive electrical equipment, smart distribution networks, medium and low voltage distribution equipment, as well as power transformer solutions.
With an impressive registered capital of RMB 100 million, our vibrant workforce exceeds 300 employees, thriving within a state-of-the-art factory spanning 68,000 square meters.Zhongshao Electrical Incorporated Co., Ltd boasts a robust infrastructure encompassing sales, logistics, after-sales service, and technical consultancy, all underscored by our acquisition of ISO9001 quality management system certification, along withISO14001 environmental management system certification, and OHSAS18001 occupational health and safety management system certification. Our core philosophy of "professional manufacturing, dedicated service" fuels our commitment to continuous growth. This involves the adoption of cutting-edge foreign automated production technology, embracing world-class innovations, and constructing infrastructures such as a scientific research building, a testing center, a provincial-level industrial design hub, and a provincial-level post-doctoral workstation, all aligned with domestic excellence.
Leveraging our provincial-level technology center, we collaborate extensively with leading research institutions both domestically and internationally. This synergy has led to the development of our proprietary ZS series secondary integration and deep secondary integration intelligent distribution network equipment, fifth-generation intelligent feeder terminals, and advanced intelligent substation terminal distribution offerings.
These groundbreaking products have undergone rigorous evaluations and safety assessments by China Electric Power Research Institute Co., Ltd. We proudly hold more than ten invention and utility model patents, five software copyrights, with certain products achieving a leading position in the domestic market.
Product packaging
Product packaging
FAQ
Q: What's your major products?
A: We specialize in oil-immersed transformers, dry-type transformers, transformer substations, high and low voltage switchgear, and an extensive range of low-voltage electronic components.
Q: Can your product be customized? A: Absolutely! To cater to varying requirements in voltage, frequency, and other specifics across different countries and regions, our products are customizable to meet your precise needs.
Q: When can I get the price?
A: Typically, we provide a quotation within 24 hours upon receiving your inquiry.
Q: What about lead or shipping time? A: Lead time is contingent on your order quantity, generally within 15 days post receipt of advance payment.
Q: What is the price of shipping?
A: Shipping costs differ based on the port of delivery.
Q: Do you offer guarantee for the products?
A: Absolutely! At Zhongshao Electric Co., Ltd. Changsha Branch, we proudly provide a minimum guarantee of one year for all our meticulously crafted transformers, ensuring peace of mind and reliability.
Q: Your Advantage?
A: With a wealth of 15 years of industry expertise, Zhongshao Electric Co., Ltd. Changsha Branch stands out due to our advanced production equipment and commitment to delivering stable quality. We ensure fast and efficient delivery, backed by our professional and prompt service. Additionally, we offer some complimentary parts to enhance your experience with us.
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