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GIS sleeve 202
GIS sleeve 202 is a high-voltage insulation bushing engineered for 24kV gas-insulated switchgear (GIS) and ring main units (RMU), designed for cable elbow connection applications. Manufactured using APG epoxy resin molding technology, this GIS insulating sleeve features a conductive terminal for solid busbar connection, an O-ring sealing gasket for gas-tight SF6 containment, and a tapered lower section for optimized electric field distribution. The integrated flange profile ensures secure mounting onto switchgear panels. Rated for 200A to 630A applications, this elbow bushing serves as the interface between RMU cable plug-in connectors and the internal switchgear conductors, maintaining SF6 gas integrity while providing reliable insulation.
- Overview
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Gas-tight sealing: Integrated O-ring gasket ensures SF6 gas containment within GIS cabinet.
APG molded epoxy housing: High-strength dielectric housing with exceptional arc resistance and dielectric strength.
Electric field control: Tapered lower section optimizes internal electric field distribution to reduce partial discharges.
Conductive terminal: Low-resistance upper connection point for solid busbar attachment.
Seamless integration: Standardized flange profile for secure, fast mounting onto switchgear panels.
Sealing gasket: Completely gas-tight interface between bushing and panel.
Cable elbow compatibility: Supports 200A to 630A plug-in connector configurations.
GIS sleeve 202 is a high-voltage insulation bushing engineered for 24kV gas-insulated switchgear (GIS) and ring main unit (RMU) applications, specifically designed as an elbow bushing for cable plug-in connectors. This GIS insulating sleeve serves as the critical interface between external cable connections and the internal switchgear conductors, providing both electrical insulation and gas-tight sealing.
The manufacturing process employs advanced APG epoxy resin molding technology, which produces a void-free, high-density epoxy matrix with exceptional dielectric strength and arc resistance. The epoxy housing provides a robust dielectric barrier between the live conductor and the grounded switchgear enclosure, maintaining insulation integrity under the pressurized SF6 environment.
The conductive terminal provides a low-resistance upper connection point for solid busbar or conductor attachment within the switchgear. The terminal is integrated into the epoxy housing, creating a sealed penetration through the gas compartment wall. The lower section accommodates the cable elbow plug-in connector, supporting 200A to 630A ratings.
The O-ring sealing gasket ensures a gas-tight interface between the bushing and the switchgear panel. The integrated gasket provides a reliable seal that maintains the SF6 gas pressure within the gas compartment, meeting the stringent leak rate requirements for sealed pressure systems. The sealing design supports the long-term gas containment necessary for maintenance-free GIS operation.
The lower tapered section features an optimized profile that regulates internal electric field distribution and reduces partial discharge activity. The tapered geometry eliminates sharp edges and minimizes field enhancement, allowing a more compact bushing design. The standardized flange profile ensures secure, fast, and precise mounting onto switchgear panels, with mounting dimensions conforming to widely used GIS and RMU platforms. The flange integrates the sealing gasket for simplified panel installation.
GIS sleeve 202 is deployed across a range of 24kV gas-insulated applications requiring cable elbow connections:
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RMU cable elbow connections:
In 24kV ring main units, this GIS insulating sleeve serves as the elbow bushing interface for cable plug-in connectors. The bushing provides the fixed contact point within the RMU gas tank, enabling the connection of external cables through elbow connectors. The gas-tight sealing ensures the SF6 pressure remains stable within the sealed tank, with the tapered lower section facilitating the insertion and removal of the plug-in connector. -
GIS cable terminations:
In gas-insulated switchgear assemblies, this insulating sleeve enables cable connections at the gas-to-air interface. The sleeve provides a sealed penetration through GIS tank wall, allowing external cable connections while maintaining gas integrity. The O-ring gasket and flange design ensure reliable sealing under the operating pressures of GIS systems. -
Cable connection in compact substations:
In compact and pad-mounted substations utilizing 24kV SF6-insulated switchgear, GIS sleeve 202 supports cable connections for incoming feeders and outgoing circuits. The bushing design accommodates the space constraints typical of compact substation designs. -
Utility distribution networks:
Distribution utilities deploying 24kV SF6-insulated RMU and GIS equipment specify this insulating sleeve for cable terminations in urban underground networks. The maintenance-free design of the sealed bushing aligns with utility requirements for reduced operational expenditure. -
Switchgear OEM manufacturing:
Manufacturers of 24kV GIS and RMU equipment specify GIS sleeve 202 for new panel production. The consistent quality and sealed construction supports reliable SF6 gas containment and insulation performance. -
Distribution network expansion:
The compatibility with 200A to 630A elbow connectors supports network expansion and reconductoring projects, with the standardized dimensions facilitating installation in existing gas compartments.
Our Services-Services That Support Your Power Distribution Projects
- 1-Product Selection Support
We help customers choose the right MV and LV switchgear products based on voltage, application, and project requirements. - 2-Technical Parameter Confirmation
We support technical checking for cabinet type, rated voltage, current, breaker type, and system configuration. - 3-Project Solution Matching
We provide suitable power distribution product combinations for substations, factories, buildings, and infrastructure projects. - 4-OEM & Customized Support
We support customized cabinet structure, components, labels, packaging, and project-based requirements. - 5-Export Documentation Support
We provide product documents, packing information, commercial documents, and export-related support. - 6-After-Sales Communication
We offer responsive communication for installation questions, product details, and project follow-up.
Reliable Quality for Every Power Distribution Project
Moldvolt focuses on stable product quality from material selection to final delivery. Each switchgear product is checked according to project requirements, technical parameters, and export standards to ensure safe and reliable performance.
Key Quality Control Points
- Component Inspection – Key electrical components are checked before assembly.
- Cabinet Structure Check – Cabinet size, structure, wiring layout, and installation details are reviewed.
- Electrical Parameter Confirmation – Rated voltage, rated current, breaker type, and configuration are verified.
- Functional Testing – Products are tested for operation, protection, and basic electrical performance.
- Appearance & Packaging Check – Surface finish, labels, accessories, and packaging are inspected before shipment.
- Delivery Documentation – Technical documents, packing details, and export information are prepared for delivery.
