GIS plug-in detachable connector

GIS plug-in detachable connector



GIS Plug-in Separable Connector for GIS is a modular electrical connection device for connecting gas-insulated switchgears (GIS) to cables, transformers or other devices. It adopts a plug-in design to facilitate installation, maintenance and maintenance while maintaining the airtightness and insulation performance of the GIS system.



Main features

1. Modular design: supports quick plug-in and unplug, which is easy to install and maintain.

2. Fully enclosed structure: SF₆ gas insulation or solid insulation is used to ensure high reliability.

3. Maintenance-free or less maintenance: The sealing structure reduces environmental impact and extends service life.

4. High current carrying capacity: Optimized conductor design, suitable for high current applications.

5. Strong compatibility: can be adapted to different voltage levels.

6. Safe and reliable: built-in shielding and voltage equalization structure to avoid partial discharge.



Typical structural composition

1. Male Connector: a separable contact part connected to the GIS device.

2. Female Connector: The interface fixed to the GIS air chamber or cable terminal.

3. Insulation medium: solid insulating materials such as SF₆ gas or epoxy resin.

4. Shielding layer: homogenize the electric field distribution to prevent local discharge.

5. Sealing system: Ensure the sealing of the GIS air chamber to prevent SF₆ leakage.

6. Mechanical interlocking mechanism: prevents live operation and improves safety.



Main applications

- Connection of GIS to power cables (such as XLPE cable terminals)

- Connection between GIS and transformer (such as GIL or transformer casing interface)

- Modular GIS extension (such as new intervals or device replacement)

- Underground substation or compact switch station (save space)

Key points for installation and maintenance

Check before installation:

- Confirm that the pressure in the GIS chamber is normal (SF₆ gas leaks).

- Check whether the contact surfaces of the plug and socket are clean and without damage.

Installation process:

1. Align the plug and socket to ensure proper alignment.

2. Use special tools or mechanisms to insert smoothly to avoid mechanical stress.

3. Check whether the interlocking device is in place to prevent misoperation.

Operation and maintenance:

- Regularly monitor SF₆ gas pressure and humidity.

- Evaluate contact status by partial discharge detection or infrared temperature measurement.

- Avoid frequent plugging and unplugging and reduce mechanical wear.

Common Types

1. SF₆ gas insulating type (traditional GIS application)

2. Solid insulating type (suitable for environmentally friendly GIS or hybrid technology)

3. With test interface type (supports online monitoring and diagnosis)



Summarize

GIS plug-in detachable connector is a key component of GIS equipment. It has the advantages of high reliability, easy maintenance and compact design, and is widely used.