Over 30 years of experience in Power Transformer/ Fuse Cutout / Isolator Switch / RMU & Switchgears manufacturing.
As a professional manufacturer, DGG offers comprehensive grid system project solutions to ensure your project runs smoothly.
With DGG, you can bring your project concept to life in just a few days.
Our foreign colleague and over 50 experienced engineers are ready to support your project.
We are a seasoned manufacturer of both high- and low-voltage power system products.
LW3 Series
Intelligent outdoor high-voltage column mounted sulfur SF6, circuit breaker (primary and secondary fusion)
Environmental Conditions:
Air temperature: -40ºC~+50ºC
Maximum daily temperature difference:≤ 25ºC
Relative humidity: ≤ 95%;
Altitude: ≤3000m;
Wind pressure not exceeding: 700pa (equivalent to wind speed of 34m/s);
Earthquake intensity: 8 levels;
Installation site: No fire or explosion hazards, no chemical corrosion, and frequent severe vibration;
Pollution level: Class lll, Class lV.
The LW3-12/630-20 inteligent outdoor high-voltage SF, column mounted circuit breaker is a new generation product developedby our company in response to the new requirements of the State Grid for the integration of primary and secondary columnmounted switches. The switch configuration fully meets the reguirements of the State Grid for the integration of primary andsecondary columns, making it easy for the State Grid to purchase and produce in buk. The switch structure is compact, the layouis reasonable, the functions are complete, and allindicators meet the requirements of the first and second integration of the StateGrid; Adopting a unified parameter protection CT, zero sequence CT, and zero sequence votage sensor, it has the characteristicsof wide measurement range, high measurement accuracy, and high relablty. The analog quanly is complete, making it easy to accurately determine various faults in the circuit. It is an ideal switch eauioment for achieving "distribution network automation" with the ability to open and close load currents, overload currents, and short-circuit currents.
| Project |
Unit |
Technical Parameter |
| Rated voltage |
kv |
12 |
| Rated insulation level
(when the circuit breaker is filled with SF6 gas at 0.25MPa and 20 ºC)
|
Lightning impulse withstand voltage full wave |
kv |
75 |
| 1min power frequency withstand voltage |
42 |
| Rain withstand voltage test |
34 |
| Reverse phase impulse withstand voltage |
85 |
| Number of disconnections |
1min power frequency withstand voltage |
kv |
30 |
| Cable charging breaking current |
1min reverse phase withstand voltage |
30 |
| Line charging interruption current |
Maximum phase voltage for five minutes |
9 |
| Rated current |
A |
400,630 |
| Rated short-circuit breaking current (at 0.25MPa and 20 ºC) |
kV |
16 |
20 |
| Phase to phase grounding reclosing breaking current |
kV |
14 |
17.4 |
| Breaking current at zero gauge pressure |
|
400,630 |
| Rated operating sequence |
Type l |
|
0-180s-CO-180s-CO |
| Type ll |
|
0-0.3s-CO-180s-CO |
Note: If the parameters requested by the user are beyond the scope of the above table, they can be determined after consutaion with our company.
DGG Vacuum Circuit Breaker Series Products
(Simply let us know what you need, and we'll assist you in selecting the right model.)
DGG Other Products
Denggaoyun Imp & Exp (zhejiang) Co., Ltd.
Why Choose DGG
Denggaoyun Imp & Exp (zhejiang) Co., Ltd.
DGG has successfully passed various certifications including IEC, KEMA, CE and we possess comprehensive test reports covering Type Tests, Routine Tests, and Special Tests.
Our team consists of highly experienced professionals. We have continually invested in advanced production and testing equipment that meets global standards.
· Strong Support: The sales engineers you engage with are experienced and certified in English proficiency. We have several English-speaking team members and foreign colleagues, along with a dedicated group of over 50 experienced engineers who ensure smooth communication and provide viable design solutions.
· Strong Production Capacity: Currently, we operate four production bases encompassing an area of 40,000 square meters, employing over 300 staff members. We have more than 2,000 sets of our own molds, leading to an annual output value exceeding 500 million.
· Quality Assurance: Additionally, we maintain independent laboratories and hold numerous certificates and test reports, including those from IEC, KEMA, CNAS, and CSIT, as well as various Type Tests.
1. Over 30 Years of Experience: We have encountered and resolved a wide range of potential challenges in the technology sector. 2. Reliable Suppliers: We have access to the highest quality materials in the industry.
3. Experienced Workforce: Our skilled workers each have over 10 years of experience.
4. Cost-Effective Solutions: With our own production facility and direct sales, we can offer significant savings whether you are an agent or a direct buyer.
DGG has fully independent laboratories to test all aspects of developed products. It also possesses extensive product data, ready to address various customer issues in the future.
DGG's Cooperative Partner
Denggaoyun Imp & Exp (zhejiang) Co., Ltd.
DGG Projects
Denggaoyun Imp & Exp (zhejiang) Co., Ltd.
DGG's Certifications & Test Reports
Denggaoyun Imp & Exp (zhejiang) Co., Ltd.
Note:If you need more information about DGG's certificates & test reports,please contact us.
Get Project Support Easily
At DGG, we make complexity simple! Follow these 3 steps to get started now!
1.Tell Us What You Need:
Describe your needs as specifically as possible. Please provide drawings, reference pictures, and share your ideas.
2.Receive Solutions and Quotation:
We will create the best solution based on your requirements and drawings. You will receive a specific quotation within 24 hours.
3.Approval for Mass Production:
We will begin production once we receive your approval and deposit, and we will arrange the shipment thereafter.
Choose DGG and become your most worry-free partner.
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