VIG(C)-12GD Three-Position Vacuum Circuit Breaker | 3.6-12kV

Overview

The VIG(C)-12GD series indoor high-voltage three-position vacuum circuit breaker has excellent electrical and mechanical properties, with a reliable and stable mechanism and a long service life. The main circuit adopts solid-sealed pole technology, which improves the environmental adaptability and insulation reliability of the circuit breaker.

Reliable mechanical and electronic properties, as well as extended mechanical and electronic service lives, make maintenance-free operation of the circuit breaker possible. It can be used in 3.6–12kV power systems as a protection and control unit for power grid equipment and power design in industrial and mining enterprises.

It is suitable for various loads with different properties, frequent operations, and occasions with multiple short-circuit current interruptions. The product is equipped with perfect mechanical and electrical interlocking devices, and has extremely high operational stability and reliability, ensuring the safety of operators and equipment, as well as the safety of electricity use.

Key Features

• Solid-sealed pole technology — the main circuit adopts solid-sealed pole technology, which improves the environmental adaptability and insulation reliability of the circuit breaker.
• Modular design — the product adopts a modular design with a frame structure — a high-performance and miniaturized high-voltage product that integrates isolating switches, solid-sealed vacuum circuit breakers, grounding switches, sensors, interlocking mechanisms and operating mechanisms.
• Compact cabinet size — the size of the adapted cabinet is 450 × 1000 × 1800 mm.
• Visible break isolating switch — a rotary isolating switch with visible break points after opening.
• Forced mechanical interlocks — there are forced mechanical interlocks between the isolating switch, circuit breaker and grounding switch to prevent misoperation.
• Modular operating mechanism — the circuit breaker adopts a modular operating mechanism, which can be replaced or overhauled independently and has good interchangeability.
• Manual or remote operation — it can be operated manually, or AC/DC energy storage operation can be selected to realize remote control.
• Cabinet door and grounding switch interlock — the cabinet door and the grounding switch are designed with a reliable interlocking structure to ensure the safety of operators.
• Maintenance-free operation — reliable mechanical and electronic properties and extended service lives make maintenance-free operation possible.

Technical Specifications

Applications

• Power grid equipment — protection and control unit in 3.6–12kV power systems.
• Industrial and mining enterprises — power design and protection for plant distribution.
• Loads with different properties — suitable for various loads with different characteristics.
• Frequent operation duty — applications requiring frequent operations.
• Repeated short-circuit interruption — occasions with multiple short-circuit current interruptions.

Installation Conditions

• The circuit breaker is an indoor device for 3.6–12kV power systems, installed in the adapted cabinet, which measures 450 × 1000 × 1800 mm.
• The forced mechanical interlocks between the isolating switch, circuit breaker and grounding switch must be verified, as they prevent misoperation.
• The reliable interlocking structure between the cabinet door and the grounding switch must be checked to ensure operator safety.
• Confirm the rotary isolating switch provides visible break points after opening, as this is part of the safety arrangement.
• Where remote control is required, select AC/DC energy storage operation; otherwise manual operation can be used.

How to Select

• The rated voltage within the 3.6–12kV range and the rated current of the circuit breaker.
• Whether the adapted cabinet size of 450 × 1000 × 1800 mm suits the available space.
• The properties of the load and whether operations will be frequent or include repeated short-circuit interruptions.
• Whether operation will be manual or remote through AC/DC energy storage operation.
• Whether the modular operating mechanism needs to be replaceable or overhauled independently.

FAQ

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