GRL customized load-isolation switch high voltage 24kv 36kv
1594mm

Overview

The DNGW1 Load-isolation switch is designed with a visible and vertical disconnection structure, primarily used in rural distribution networks.

Key Features and Benefits:

• Installation Flexibility:The DNGW1 and DNHGW1 Load-isolation switches can be mounted horizontally or vertically on single or double poles made of metal, concrete, or wood, offering versatile installation options.
• Enhanced Safety:These switches feature a high-speed auxiliary switch and an arc extinguishing chamber that minimizes the generation of arcs and gases, preventing external arcs. This design enhances operator safety and is environmentally friendly.
• Durability in Harsh Environments:The DNHGW1 Load-isolation switch’s composite insulator provides excellent resistance to chemicals, salty environments, and high pollution levels, ensuring reliable performance in challenging conditions.
• Ease of Handling:The lightweight materials used in these switches make them easier to pack, transport, and assemble. The isolation load switch is manufactured in separate stages and fixed to an enclosed pallet with bolts for safer transportation and easier packaging. Multiple phases are mounted on a bracket and operated by a single drive mechanism.
• Compliance with Standards:Our Load-isolation switches comply with IEC 60265-1 and IEC 62271-102 standards, ensuring high-quality and reliable performance.

Structure of Load-isolation switch

1、Main Conductive Part: This is the primary pathway for the electrical current, ensuring efficient and stable conduction within the switch.

2、Insulation: This component provides electrical insulation, preventing unwanted current flow and ensuring the safety and reliability of the switch’s operation.

3、Base Part: The sturdy foundation that supports all other components, ensuring structural integrity and ease of installation.

4、Arc Extinguishing Hood: This part is crucial for minimizing the generation of arcs and gases during operation. It helps extinguish any arcs that may form, enhancing safety and reducing environmental impact.

5、Wiring Board: The wiring board facilitates the connection of electrical wiring, making installation and maintenance straightforward and efficient.

6、Limiting Piece: This component helps control and limit the movement within the switch, ensuring precise operation and enhancing the overall performance of the switch.

These components work together to provide a reliable, safe, and efficient load-disconnection solution, suitable for various installation environments and applications.

View more about GRL HV isolator switch>>

Technical Parameter

Mode：DNGW1-36 Load-Disconnector Switch

Rated Current：400A/630A

Rated Voltage: 24kv/36kv

Breaking Current：16 KA/20KA

Power-frequency WithstandVoitag：85kv

Impulse Voitage：195BIL

Leakage Distance：720mm/900mm

Dimensions：1594 cm

Certification: CE

Operation of Load-isolation switch

Load-isolation switch are designed to isolate parts of an electrical circuit by interrupting the flow of electrical current.

Unlike circuit breakers, which are meant to protect circuits from overload, high voltage Load-isolation switch is operated manually or remotely to ensure safety during maintenance or inspection.

Their operation is straightforward yet critical; by physically separating contacts within the switch, they create an air gap that ensures no current can flow through the circuit being serviced.

The design of these switches varies depending on their application but typically includes rotating, sliding, or swinging mechanisms to open or close the electrical circuit.

They must withstand the high voltages they control, often involving sophisticated insulation and arc suppression technologies to manage the electrical discharges that occur during operation.

Normal Operating Conditions

1、Ambient temperature: -40℃ ~+40℃ ;

2、Relative humidity: the daily average value is not biggerthan 95%, and the monthly average value is not bigger than 90%;

3、Installation location: the altitude does not exceed 1000m;

4、Wind speed: no more than 35m/s;

5、Ice coating thickness: no more than 10mm;

6、Installation location: There should be no risk of fire,explosion, chemical corrosion and severe vibration;

7、Earthquake intensity: no more than magnitude 8;

8、Not suitable for places with burning or explosion hazards,places with severe vibration or impact, conductive and chemical gas and areas with severe pollution and salt spray.

Ordering instruction

1、tem No；

2、Rated Voltage;

3、Rated Current;

4、Whether with arc extinguishing chamber;

5、Whether with mounting bracket ;

6、Please inform us with your special requirements.