Quality Supplier:
More Than 15 Years Of Experience In Supplying State Grid And Southern Power Grid.
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Professional supplier of integrated power transmission and distribution equipment.
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.
ZW20-12F Series
Outdoor High Voltage AC Vacuum Circuit Breaker
Environmental Conditions:
Altitude: not exceeding 1000m. f the alitude is higher than 1000m, the rated insulation level should be adjusted accordingly;
Environmental temperature: upper limit +45'c, lower limit -40'ºC, maximum dally temperature diference of 25K;
Humidity: Daily average relative humidity <95%, monthly average relative humidity <90%;
Solar radiation intensity: ≥0.1W/cm;
Wind speed: 34m/s;
Wind pressure: 700Pa;
Pollution level: e-level;
lce thickness:≤ 10mm;
Earthquake tolerance: horizontal acceleration of 0.3g, vertical acceleration of 0.2g.
ZW20-12F series outdoor high-voltage AC boundary vacuum circuit breaker (hereinafter referred to as "boundary circuit breaker""is an outdoor high-voltage switchgear with three-phase AC 50Hz and rated voltage of 12kV. Mainly composed of vacuum circuitbreaker body, distribution automation feeder terminal, voltage transformer, control cable, etc. The circuit breaker body is equipped with vacuum arc extinguishing chamber, current transformer, zero sequence current transformer and other components.
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Technical parameter |
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Rated Frequency
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Rated Voltage
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Rated current
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Rated short-termpower frequency withstand voltage
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Interphase and ground (wet test)
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Interphase and ground (dry test)
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Fracture surface (dry test)
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Secondary circuit to ground
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Rated lightning impulse withstand voltage
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Interphase and ground
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Fracture surface
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Rated short-circuit breaking current (effective value)
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Rated short-circuit making current (peak)
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Rated short-term withstand current and duration
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Rated peak withstand current
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Rated short-circuit breaking current breaking frequency
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Rated gauge pressure of SF6 gas
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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 VCB 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
Denggao Electric Co., Ltd.
Why Choose DGG
Denggao Electric Co., Ltd.
DGG has successfully passed various certifications including IEC, KEMA, TUV,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
Denggao Electric Co., Ltd.
DGG Projects
Denggao Electric Co., Ltd.
DGG's Certifications & Test Reports
Denggao Electric 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.
We are a trusted supplier to State Grid and China Southern Power Grid,providing equipment
for over 15 years with proven long-term performance.
This gives us the confidence to expand globally and share our
high-quality products worldwide.
Our products are backed by multiple type test reports, ensuring absolute safety and reliability.
We are confident we will be your best choice.
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