Gas insulated switchgear with umbrella skirt double conduit
Key attributes
| Brand | Switchgear parts |
| Model NO. | Gas insulated switchgear with umbrella skirt double conduit |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Series | 235 |
Product descriptions from the supplier
The 235 umbrella skirt sleeve is a specialized core insulation accessory for 12kV/24kV SF6 free solid insulated ring main unit. The core is compatible with the installation requirements of the 235 specification and serves the dual functions of power transmission, lead insulation, and fixation. It is a key connecting component of the medium voltage distribution system.
Core Features
Adopting a pure solid insulation structure, there is no SF6 gas or oil medium, no leakage or combustion risk, which meets the "intrinsic safety" requirements of green distribution, and the insulation performance is stable and reliable.
The integrated umbrella skirt design significantly increases the creepage distance, enhances the anti pollution flashover ability, has strong surface hydrophobicity, and is suitable for complex and harsh environments such as coastal areas and industrial pollution areas.
Accurately matching the installation size of 235 specifications, the structure is compact and has high mechanical strength, excellent impact resistance and aging resistance, and can resist the influence of vibration and temperature difference changes.
Outstanding sealing and protection performance, moisture-proof and dustproof, easy installation without additional maintenance, effectively reducing operation and maintenance costs, and extending service life.
Applicable scenarios
Suitable for 12kV/24kV SF6 free solid insulated ring main unit, used for connecting cabinet incoming and outgoing lines, PT circuits and other lines, widely used in medium voltage distribution systems such as urban distribution networks, industrial plants, new energy power stations, underground substations, etc.
Product Parameters
|
Item |
Description |
|
Product Name |
Gas-insulated Switchgear Double-pass Bushing |
|
Model Number |
235 |
|
Operating Frequency |
50Hz |
|
Rated Voltage |
10kV~12kV |
|
Material |
Epoxy Resin |
|
Production Process |
Vacuum Casting |
|
Operating Environment |
Up to 1000m |
|
Applicable Scope |
Gas-insulated Switchgear, Box Transformer, Branch Box |
The shed increases creepage distance to improve pollution flashover resistance, especially suitable for heavy pollution areas; it also enhances heat dissipation and mechanical strength, and reduces the risk of insulation breakdown due to surface pollution.
It is a key insulation accessory for 10kV/12kV inflatable cabinets/RMUs, mainly for electrical insulation and conductor connection. The shed structure extends the creepage distance to prevent pollution flashover; high-purity epoxy resin insulation blocks high-voltage breakdown, while the embedded conductor ensures stable current transmission, matching SF6-free and maintenance-free design concepts.
Related Products
-
Solid insulated ring main unit accessories isolation switch core PT (without SF6 gas)
-
Solid insulation cabinet lifting cabinet core - D without SF6 gas
-
Special Side-Expanding Bushing for Solid Insulated Switchgear
-
Solid insulated ring main unit accessory adapter busbar
-
Solid insulated ring main unit accessories 260 umbrella shaped sleeve seat
-
Solid insulated ring main unit accessories 234 Bushing
-
Solid insulated ring main unit accessories load switch combination switch core (excluding sulfur hexafluoride gas)
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
