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 Incorperated Co., Ltd, established on April 7, 2013, is located in the Zhongshao Industrial Park of Shaoshan High-tech Industrial Development Zone, Hunan Province.
It is a specialized technology company and a national high-tech enterprise focusing on the research, development, production, sales, and service of complete electrical equipment, smart distribution network equipment, medium voltage distribution equipment, low voltage distribution equipment, and power transformer equipment.
The registered capital is RMB 100 million, with over 300 employees and a factory area of 68, 000 square meters. Zhongshao Electrical Incorperated Co., Ltd has a complete sales, logistics, after-sales service system, and technical consultation system, and has obtained ISO9001 quality management system certification, ISO14001 environmental management system certification, and OHSAS18001 occupational health and safety management system certification. The company adheres to the core concept of "professional manufacturing, dedicated service, " continuously introducing advanced foreign automated production equipment, absorbing world-leading technologies, and building a scientific research building, testing center, provincial-level industrial design center, and provincial-level post-doctoral workstation with domestic advanced levels.
Relying on the provincial-level technology center and cooperating extensively with many research institutions at home and abroad, it has successively developed ZS series secondary integration and deep secondary integration intelligent distribution network equipment with independent intellectual property rights, fifth-generation intelligent feeder terminals, and intelligent substation terminal distribution products.
These products have also passed professional testing and business safety inspections by China Electric Power Research Institute Co., Ltd. Currently, it owns more than ten invention and utility model patents, five software copyrights, and some products have reached domestic leadin
Product packaging
Product packaging
FAQ
Q:what's your major products?
A: oil immersed transformer, dry type transformer, Transformer Substation, High and Low VoltageSwitchgear,all kinds of low-voltage electronic components
Q: Can your product be customized? A: Considering differences in voltage, frequency and other special transformer product in different countries and regions, our product can be customized according to your requirements.
Q: When can I get the price?
A:Usually we quote within 24 hours after we get your inquiry.
Q: What about lead or shipping time? A: The lead time depends on the quantity you ordered, generally within 15 days upon receipt of advance payment.
Q: What is the price of shipping?
A: Depending upon the port of delivery, prices varies.
Q: Do you offer guarantee for the products?
A: Yes. We offer at least one years guarantee for all of our transformers.
Q: Your Advantage?
A: 15 years experience, Advanced production equipment, Stable quality, Fast delivery, Professional & good & Prompt service. Also some free parts can be provided for you.
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