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Jiangsu Changyun Intelligent Technology Co., Ltd
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VX2-12 Series Upper Disconnect & Upper Earthing Load Switch Unit

VX2-12 Series Upper Disconnect & Upper Earthing Load Switch Unit
Place of Origin:China
Brand Name:Changyun
Certification:ISO
Model Number:GHXGEN VX2-12
Product Description
Detailed Specifications & Features
VX2-12 Series Upper Disconnect & Upper Earthing Load Switch Unit
Product Overview

The VX2-12 upper disconnect and upper earthing load switch unit is a core modular switching component designed for 12kV environmentally friendly gas-insulated ring main units (RMUs). This integrated unit combines a load switch, an upper-mounted disconnect switch, and an upper-mounted earthing switch within one compact frame, fulfilling three core functions: load current making and breaking, visible electrical isolation, and safe maintenance earthing.

Core Advantages
1. Optimized Upper Layout Design

The disconnect and earthing switches are arranged on the upper side of the assembly, effectively reducing the overall depth of the ring main unit. This layout saves cabinet space and simplifies internal wiring, inspection, and later maintenance operations.

2. Strict Mechanical Interlock System

Built-in reliable mechanical interlocks prevent dangerous misoperation:

  • The disconnect and earthing switches cannot be actuated while the load switch is closed.
  • The load switch is mechanically locked from closing when the earthing switch is engaged.

This physical protection fully complies with international safety standards and safeguards field maintenance personnel.

3. Stable Current Carrying & Insulation Performance

High-performance red insulating shields are equipped for phase-to-phase and phase-to-earth insulation. Precisely machined conductive contacts ensure stable contact pressure, delivering outstanding rated current and short-time withstand current performance for long-term reliable operation.

4. SF₆-Free, Environmentally Friendly Solution

Compatible with dry air, nitrogen and other eco-friendly insulating media. It eliminates reliance on greenhouse gas SF₆, conforming to global low-carbon power grid development trends and cutting down long-term gas replacement and waste treatment costs.

5. Modular, Cabinet-Friendly Assembly

Standardized mounting holes enable fast pre-assembly before cabinet integration. Both manual and motorized operating mechanisms are optional, offering wide compatibility with mainstream environmentally friendly gas-insulated RMU cabinet designs.

Typical Application
  • Municipal 10kV ring distribution cabinets and compact switchgear
  • Power distribution rooms for industrial parks, data centers, hospitals and commercial buildings
  • Incoming and outgoing feeder units for photovoltaic and wind box-type transformers
  • Retrofit projects replacing outdated SF₆ insulated switchgear
Main Reference Specifications
Rated Voltage 12 kV
Rated Frequency 50 Hz
Structure Integrated 3-position unit with upper disconnect and upper earthing
Compatible Insulating Media Dry Air / Nitrogen (environmentally friendly gas)
E-commerce Short Version (for web product page)

VX2-12 upper disconnect upper earthing load switch unit is a key modular component for 12kV environmentally friendly gas insulated ring main units. It integrates load, disconnect and earthing switches with proven mechanical interlocks to avoid hazardous misoperation. The space-saving upper layout reduces cabinet depth, supporting SF₆-free insulation media like dry air and nitrogen. Suitable for municipal, industrial, renewable energy distribution projects. Modular pre-installation available, with optional manual or motorized drive mechanisms.

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