• DS4 40.5kV 126kV 145kV 252kV High voltage disconnect switch
DS4 40.5kV 126kV 145kV 252kV High voltage disconnect switch
discuss personally
Model
DS4-252/3150-50
DS4-252/2000-40
DS4-145/2000-40
DS4-126/3150-40
DS4-126/2000-40
DS4-72.5/2000-40
DS4-40.5/4000-50
DS4-40.5/2500-40
DS4-40.5/2000-40
Basic info
Brand ROCKWILL
Model NO. DS4 40.5kV 126kV 145kV 252kV High voltage disconnect switch
Rated voltage 252kV
Rated normal current 3150A
Series DS4
Product Detail

Description:

DS4 series disconnector adopts double column horizontal rotation structure, which is composed of three unipolar and operating mechanism. Each monopole consists of a base, a post insulator, and a conducting part. A rotating pillar insulator is installed at both ends of the base, and the contact arm and contact arm of the main electrical part are respectively fixed on the top of the pillar insulator. The operating mechanism drives one end of the pillar insulator to rotate, and drives the other end of the pillar insulator to reverse rotate 90° through the cross connecting rod, so that the conductive knife can turn on the horizontal plane to realize the isolation switch opening and closing. The opening state forms a horizontal insulation fracture.

Main Features:

  •  The conductive arm is made of rectangular aluminum alloy tube or aluminum alloy plate, high strength, light weight, large heat dissipation area, good anti-corrosion performance.

  •  The contact part of the conductive arm adopts external pressure plate spring structure. The plate spring is made of alloy material with good elasticity, which can keep the contact pressure stable for a long time and overcome the drawbacks of the spring internal pull structure.

Technical parameter

What are the structural characteristics of the disconnector?

Contact System:

  • Description: The contact system is a critical part of the isolator switch, consisting of moving contacts and stationary contacts. The moving contact is typically connected to the operating handle via a transmission mechanism and can move to engage or disengage from the stationary contact under the influence of the operating force.

  • Surface Treatment: To ensure good contact performance, the contact surfaces are often specially treated, such as silver plating. This reduces contact resistance and minimizes heat generation.

  • Shape Design: The shape of the contacts is also important. Common types include knife-blade contacts and finger contacts, which provide a larger contact area to ensure safe and stable current flow.

Insulation Part:

  • Description: The insulation part ensures that there is sufficient insulation between different potential sections of the isolator switch. It is mainly composed of insulators, which are typically made of ceramic, glass, or composite materials.

  • Ceramic Insulators: Ceramic insulators have excellent insulation properties, mechanical strength, and weather resistance, making them suitable for various harsh environmental conditions.

  • Glass Insulators: Glass insulators have good self-cleaning properties, reducing the impact of dust and dirt on insulation performance.

  • Composite Insulators: Composite insulators are lightweight and have excellent pollution flashover resistance, making them advantageous in special application scenarios.

Transmission Mechanism:

  • Description: The transmission mechanism is used to transfer the operating force from the operating handle to the moving contact, enabling the opening and closing actions of the contacts. It can be a manual linkage mechanism or an electric operating mechanism.

  • Manual Linkage Mechanism: This type of mechanism is simple in structure and highly reliable. It converts the rotational motion of the operating handle into linear or rotational motion of the moving contact through a series of linkages and shafts.

  • Electric Operating Mechanism: Suitable for applications requiring remote control or frequent operation, this mechanism uses a motor, reduction gear, and transmission components to achieve automated operation of the isolator switch.

Base and Support:

  • Description: The base and support are the supporting structures of the isolator switch, used to fix the contact system, insulation part, and transmission mechanism. The base is usually made of metal and has sufficient mechanical strength and stability to bear the weight of the isolator switch and various forces generated during operation.

  • Design Considerations: The support is designed based on the installation method and application scenario of the isolator switch. For example, the support structure of indoor isolator switches differs from that of outdoor isolator switches. Outdoor isolator switches require supports that consider factors such as wind resistance, rain protection, and corrosion resistance.

 

Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High Voltage Electrical Apparatus
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
Related Products
Related Knowledges
What is the difference between a dielectric and an insulator?
What is the difference between a dielectric and an insulator?
Dielectrics and insulators are distinguished primarily by their applications. One of the main differences is that a dielectric can store electrical energy by becoming polarized in an electric field, whereas an insulator resists the flow of electrons to prevent current conduction. Other key differences between them are outlined in the comparison chart below.Definition of DielectricA dielectric material is a type of insulator that contains few or no free electrons. When subjected to an electric fi
Edwiin
08/30/2025
Fault Analysis and Treatment of Oil-Immersed Transformers
Fault Analysis and Treatment of Oil-Immersed Transformers
Oil Leakage at Welded JointsOil leakage at welded joints primarily stems from poor welding quality, such as incomplete or detached welds, and defects like pinholes and gas pores. Although oil-immersed transformers are initially coated with solder and paint during manufacturing, potentially masking these issues temporarily, the defects tend to surface during operation. Additionally, electromagnetic vibration can cause weld cracks, leading to oil leakage.To resolve such leaks, the first critical s
Edwiin
08/29/2025
What losses occur during operation of the transformer? How to reduce losses?
What losses occur during operation of the transformer? How to reduce losses?
Transformers experience various types of losses during operation, primarily categorized into two main types: copper losses and iron losses.Copper LossesCopper losses, also known as I²R losses, are caused by the electrical resistance of the transformer windings—typically made of copper. As current flows through the windings, energy is dissipated in the form of heat. These losses are proportional to the square of the load current (I²R), meaning they increase significantly with high
Rockwell
08/29/2025
Cable Fault Detection, Testing, Location and Repair
Cable Fault Detection, Testing, Location and Repair
I. Methods for Cable Testing and Inspection:Insulation Resistance Test: Use an insulation resistance tester to measure the insulation resistance value of the cable. A high insulation resistance value indicates good insulation, while a low value may suggest insulation problems requiring further investigation.Voltage Withstand Test: Apply a high-voltage test using a high-voltage tester to verify whether the cable can withstand high voltage under its rated operating conditions. Under normal circums
Leon
08/29/2025
Cable Quality Inspection and Cable Detection & Testing
Cable Quality Inspection and Cable Detection & Testing
Power cable quality inspection and cable testing are conducted to ensure that the cable's quality and performance meet specified requirements, thereby guaranteeing the safe and stable operation of power systems. Below are some common contents of power cable quality inspection and cable testing:Visual Inspection: Check the cable surface for physical defects such as damage, deformation, or scratches to ensure the cable's exterior is intact.Dimensional Measurement: Measure dimensional parameters su
Edwiin
08/29/2025
Transformer Detection, Testing, Maintenance and Servicing
Transformer Detection, Testing, Maintenance and Servicing
Transformer testing, inspection, and maintenance are essential tasks to ensure normal operation and extend the service life of transformers. Below are some recommended steps:Visual Inspection: Regularly inspect the transformer's exterior, including the enclosure, cooling system, and oil tank. Ensure the enclosure is intact, free from corrosion, damage, or leakage.Insulation Resistance Testing: Use an insulation resistance tester to check the transformer's insulation system. Verify that the insul
Vziman
08/29/2025
×
Inquiry
Download
IEE-Business is dedicated to serving the personnel in the global power industry.
Join IEE-Business, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!