Dgg Outdoor Transmission Line High Voltage Horizontal Break Double Column Isolator Disconnect Switch with Earth Grounding Switch

Product Description

0.38-123kV Supplier of Integrated Power Transmission & Distribution Equipment. 
          
Get factory pricing. 
Request a quote now.

More Than 15 Years Of Experience In Supplying State Grid And Southern Power Grid. 

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.

Proven track record in winning and delivering domestic and international power projects with reliable execution capability.

Selected Project Reference Numbers (Partial List):

DD1/P&D/ICB/2025/028/D
CEB SPECIFICATION 082:2019
DD4/P&D/ICB/2024/010/D
CEB/AGM(DD3)/P&D/ICB/2025/25/BPC
TENDER Y103092
NO-DIS-MA-2205
NO-DIS-MA-6003
NO-DIS-MA-7006
NO-DIS-MA-7007TENDER FOR THE

...

For more information, please feel free to contact
us.

GW4A-40.5W Series

Outdoor High Voltage AC Isolation Switch 

GW4A-40.5 series improved outdoor high-voltage AC isolation switch (hereinafter referred to as "isolation switch") is an outdoorhigh-voltage switchgear with a rated frequency of 50Hz. 1t is used for switching 35kV high-voltage lines with votage and withoutload, as well as for electrical isolation of high-voltage busbars, circuit breakers and other electrical equipment under maintenancefrom live high-voltage lines. lt can also be used for breaking and closing very small capacitive and inductive currents.

The isolation switch complies with technical standards such as GB/T 1985-2014 "High voltage AC isolation switches and groundingswitches" and DL/T 486-2010 "High voltage AC isolation switches and grounding switches".

 

Project		Unit	Technical Parameter
Rated voltage		kV	40.5
Rated frequency		Hz	50
Rated current		kA	630	1250	2000 2500	3150 4000
Rated short-term withstand current		kA	20/25	25 31.5	31.5	40 50
Rated short-term withstand current (peak)		kA	50/63	63/80	80	100 125
Rated short-term power frequency withstand voltage	Interphase and ground (dry test)	kV/min	95/1
	Interphase and ground (dry test)		118/1
	Interphase and ground (wet test)		95/1
Rated lightning impulse withstand voltage	Interphase and ground	kV	185
	Fracture surface		215
Duration of rated short-term withstand current	Slsolation switch	S	4
	Grounding switch		2
Main circuit resistance		μ Ω	≤ 100		≤ 80
Creepage distance		mm	≥ 1256(e-level anti fouling)
Pollution level	Manual operation mechanism		CS14G (without grounding switch)
			Main switch CS14G, ground switch CS11(with single/double grounding switch)
Creepage distance	Electric motor operating mechanism	CJ6 type, motor voltage AC380V or DC220V control voltage AC220V or DC220V. auxiliary contact 8 normally open and 8 normally closed(standard configuration)
Mechanical lifespan		Times	5000(lsolation switch/grounding switch)

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.
 

 

 

Outline & Installation Dimensions
Denggao Electric Co., Ltd.

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Why Choose DGG

Denggao Electric Co., Ltd.

 

DGG has successfully passed various certifications including IEC, KEMA, TUV, Type Test Reports.

 

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 Power is a manufacturer of integrated low,medium and high voltage power transmission and distribution equipment, supplying solutions for voltage levels from 0.38kV to 123kV. Our product portfolio includes circuit breakers, load break switches, disconnect switches, instrument transformers, fuse cutouts, surge arresters, and complete power distribution solutions. DGG Power equipment is widely used in power grids, substations, industrial plants, mining projects, and infrastructure distribution systems. We serve national and regional power utilities, EPC contractors, local distributors, and industrial project owners worldwide. With in-house testing facilities, our products are supported by complete type test reports in accordance with IEC standards. We also provide OEM and ODM services, offering customized designs to meet project specifications, technical drawings, and tender requirements. Through integrated manufacturing and quality control processes, DGG Power ensures stable production capacity and reliable delivery for international projects, aiming to be a long-term partner for medium and high voltage power applications.

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.

 

FAQ

 

Q1: What voltage range do your products cover?
A: Our products cover low,medium and high voltage levels from 0.38kV to 123kV, depending on the product type.

Q2: Do you provide IEC type test reports?
A: Yes, selected products can be supplied with complete IEC type test reports.

Q3: Do you support OEM or ODM services?
A: Yes, we offer OEM and ODM services based on technical drawings and project requirements.

Q4: What applications are your products used for?
A: Our products are widely used in power grids, substations, industrial plants, and infrastructure projects.

Q5: How are the products packaged for export?
A: Products are packed with suitable protective materials and can be supplied in cartons, wooden cases, or pallets.

Q6: What transportation methods are available?
A: We support sea freight, land transportation, and multimodal shipment.

Q7: Can you support overseas projects?
A: Yes, we have experience supporting international power distribution and EPC projects.

Q8: Do you provide technical support before and after sales?
A: Yes, technical support is available throughout the project lifecycle.