33KV Circuit Breaker Mechanism with Isolation Mechanism

The 33KV Circuit Breaker Mechanism With Isolation Mechanism operating mechanism and a Disconnector operating mechanism, forming the core of eco-friendly medium-voltage switchgear. Designed for reliability, maintenance efficiency, and environmental safety, this mechanism ensures secure fault interruption and circuit isolation while avoiding harmful greenhouse gases like SF₆.

The KDSVM-12/630-20-X series offers a spring-operated solution for the circuit breaker and a mechanically interlocked disconnector, providing a complete and safe operating sequence for medium-voltage applications.

Key features include:

Spring-operated closing and opening

Mechanical interlock between breaker and disconnector

Auto-reclosing capability

Split-button design with dust-proof, safety cover

High mechanical lifespan (>10, 000 operations)

Compliance with GB1984-2014 and GB/T1985-2023

Product Model

Components of the Operating Mechanism

Our company's 33KV Circuit Breaker Mechanism with Isolation Mechanism is meticulously designed, ensuring safe and reliable operation while facilitating field use.

1. Vacuum Circuit Breaker Operation Mechanism

The circuit breaker utilizes mechanical spring energy storage to ensure instantaneous independent operation even during power outages. It can quickly trip in the event of a fault and close rapidly upon command. Employing a vacuum arc extinguisher effectively controls the arc, ensuring circuit safety and stability.

This means that even in emergencies, your power grid equipment and personnel are reliably protected.

2. Disconnect Switch Operation Mechanism

Our disconnect switches offer manual or electric operation, allowing you to easily create a visible isolation gap. The mechanical interlocking design ensures that the disconnect switch cannot be operated if the circuit breaker is not fully tripped, thus preventing dangers caused by misoperation.

We place great importance on customer safety; therefore, each disconnect switch undergoes rigorous testing to ensure smooth and reliable operation.

How do I perform the operation correctly?

Our 33KV Circuit Breaker Mechanism with Isolation Mechanism offers intuitive and safe operation at every step. As a supplier, our products ensure worry-free and efficient operation in the field.

1. Energy Storage Operation

Our circuit breaker mechanism integrates an isolation device, ensuring a secure installation on the control panel. Simply rotate the included dedicated operating handle until a "click" sound is heard to charge the spring; the limit switch will also be triggered.

If using electric operation, simply connect the power supply. The device will automatically store energy, and once the motor is fully charged, it will disconnect, safely preserving the energy for immediate circuit breaker closure. Before operation, ensure all auxiliary wiring is correctly connected for added peace of mind.

2. Closing Operation

Manual Closing: Press the green button to instantly release the stored energy, pushing the circuit breaker to close the main circuit.

Electric Closing: Powering the closing solenoid coil immediately releases the stored energy, causing the circuit breaker to close quickly. Simultaneously, the opening spring automatically recharges, and an anti-misoperation interlock effectively prevents repeated closing, ensuring operational safety.

3. Circuit Breaker Operation

Manual Tripping: Press the red button to release the stored tripping energy. The circuit breaker quickly disconnects the main circuit, ensuring circuit safety.

Electric Tripping: Power is supplied to the tripping solenoid coil. The electromagnetic device releases stored energy, causing the circuit breaker to quickly open its contacts and safely cut off the current.

FAQ

Q1: How to enhance the relieability of the spring-operated mechanism in the VCB?

A1: The spring-operated design stores energy mechanically, whicn can ensure the vacuum circuit breaker can trip no need any external power. This operating mechanism can operate extremely fast, reliable when the faults occured. The difference with hydraulic or pneumatic systems the moving parts is fewer and no need for fluid replenishment, and the mechanical endurance is very high and minimal maintenance.

Q2: Can the disconnector mechanism be operated while the circuit is live?

A2: No, absolutely can not. The most important safety feature of the operation mechanism combination is the mechanical interlock. The disconnector mechanism is physically blocked from being operated unless the vacuum circuit breaker is fully open. This interlock function mechanism prevents any attempt to open the disconnector under load, which could censure the safety for the operating worker.

Q3: What standards do 33KV Circuit Breaker Mechanism With Isolation Mechanisms comply with?

A3: These mechanisms are designed and tested to meet international standards for high-voltage equipment. This typically includes standards like GB1984 and GB/T 1985, which are aligned with broader IEC specifications, ensuring safety, performance, and reliability.

Q4: Can the vacuum circuit breaker be operated when the control power is lost?

A4: Yes, of cause.The spring operating can be full manual operation. The springs can be charged manually using a handle, and the vacuum circuit breaker can be opened or closed by the manual buttons. The disconnector switch can also be operated manually. Which can ensure functionality when need installation, maintenance, or power outage scenarios.

Q5: How are the VCB mechanism and the disconnector mechanism integrated in the switchgear?

A5: They are designed as a coordinated assembly. The VCB operating mechanism is mounted to operate the vacuum interrupter, and the disconnector mechanism is mounted on its isolation panel. They are linked via a mechanical interlocking system, often using rods and latches, which enforces the correct operating sequence which breaker must open before disconnector can move, directly within the hardware, providing safety.

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