C134 Type Electric Operating Mechanism

Reliable Motorized Operating Solution for High-Voltage Switchgear

The CJ34 Type Electric Operating Mechanism is a compact and highly reliable motor-driven operating device designed for disconnect switches and grounding switches used in GIS (Gas Insulated Switchgear), substations, and high-voltage electrical systems. Suitable for voltage classes ranging from 40.5kV to 252kV, this mechanism provides precise opening and closing operations while maintaining excellent operational stability and long-term durability.

Developed for modern power transmission and distribution infrastructure, the CJ34 mechanism combines a worm gear transmission system, automatic clutch protection, and electrical limit switch control to deliver accurate switch positioning and dependable performance. The mechanism supports both electric and manual operation, providing flexibility for utilities, EPC contractors, switchgear manufacturers, and industrial power users.

Its compact dimensions, robust construction, and maintenance-friendly design make it an ideal operating solution for new installations and retrofit projects throughout Europe, the Middle East, Africa, and global energy markets.

Designed for GIS Disconnect and Grounding Switch Applications

The CJ34 electric operating mechanism is specifically engineered for operation of:

• Disconnect switches

• Grounding switches

• GIS equipment

• Hybrid switchgear systems

• Utility substations

• Power transmission networks

• Renewable energy substations

• Industrial electrical systems

The mechanism can also be integrated with other switching devices that match its torque and output angle specifications.

With its precise control capability and stable transmission performance, the CJ34 helps ensure safe isolation and grounding operations within critical electrical infrastructure.

Advanced Worm Gear Transmission Technology

The core of the CJ34 operating mechanism is its precision worm gear and worm shaft transmission system.

During operation, the electric motor drives the worm shaft, which transfers torque through the worm wheel assembly to the output shaft. This design provides smooth and controlled movement throughout the switching process.

Key benefits of the worm gear transmission include:

• High transmission efficiency

• Stable torque output

• Reduced mechanical vibration

• Smooth switching operation

• Excellent positioning accuracy

• Long service life

Compared with conventional transmission methods, the worm gear structure offers improved operational stability and lower maintenance requirements.

Dual Protection System for Enhanced Reliability

One of the distinguishing features of the CJ34 mechanism is its dual protection design.

After the switch reaches its target position, two independent protection systems are activated:

Automatic Clutch Protection

The clutch automatically disengages when the operation is complete, preventing overload and protecting the internal transmission components.

Limit Switch Power Cut-Off

The travel limit switch immediately disconnects the motor power supply after reaching the preset position, ensuring accurate stopping and preventing overtravel.

Together, these two protection methods provide:

• Improved operational safety

• Reduced mechanical stress

• Extended component lifespan

• Enhanced reliability during repeated operations

This design significantly contributes to the mechanism's service life of over 10,000 operations.

Electric and Manual Operation Capability

The CJ34 mechanism supports both motor-driven and manual operation.

Under normal operating conditions, electrical control allows remote and local switching through automation systems or control panels.

For maintenance activities, emergency operation, or commissioning procedures, operators can use the manual operating interface.

This dual-function capability provides:

• Operational flexibility

• Emergency backup functionality

• Reduced downtime risk

• Easier maintenance procedures

• Improved system availability

The manual insertion port is designed for safe and convenient operation while maintaining equipment protection.

Visual Position Indication and Monitoring

Accurate position verification is critical for high-voltage switching equipment.

The CJ34 incorporates a clear open/close position indicator that enables operators to quickly verify switch status.

Additional monitoring components include:

• Auxiliary switches

• Micro switches

• Magnetic blowout switches

• Position indicators

• Identification plates

These integrated elements provide reliable feedback signals for control systems and maintenance personnel.

Compact Design with High Integration

One of the major advantages of the CJ34 mechanism is its compact structure.

With dimensions of only 250 × 430 × 185 mm and a weight of approximately 38 kg, the mechanism occupies minimal installation space while maintaining strong operational performance.

Benefits of the compact design include:

• Simplified installation

• Reduced transportation costs

• Easier switchgear integration

• Improved maintenance accessibility

• Lower enclosure space requirements

These characteristics are particularly valuable for GIS installations where space optimization is important.

Long Service Life and Low Maintenance Requirements

The CJ34 is engineered for long-term operation in demanding environments.

Its optimized transmission system, automatic protection functions, and durable mechanical construction allow the mechanism to achieve a mechanical life exceeding 10,000 operating cycles.

This helps operators benefit from:

• Reduced maintenance frequency

• Lower lifecycle costs

• Improved equipment availability

• Greater return on investment

• Enhanced operational reliability

For utility operators and industrial users, this translates into lower total ownership costs and improved network performance.

Benefits for Global Infrastructure Projects

The CJ34 electric operating mechanism is suitable for a wide range of applications across Europe, the Middle East, Africa, Asia, and international utility markets.

Key advantages for procurement teams include:

• Proven high-voltage application capability

• Reliable motorized operation

• Dual safety protection system

• Compact installation footprint

• Long mechanical life

• Flexible manual backup operation

• Low maintenance requirements

• Excellent cost-performance ratio

These benefits make the CJ34 an ideal solution for modern switchgear manufacturing and power infrastructure development projects.

Product Advantages

• Suitable for 40.5kV–252kV switchgear applications

• Reliable worm gear transmission system

• Automatic clutch disengagement protection

• Limit switch power cut-off protection

• Electric and manual operation modes

• Compact and lightweight construction

• Accurate switch positioning capability

• More than 10,000 operation cycles

• Easy integration into GIS equipment

Product Specifications

Mechanism Parameters

Motor Parameters

FAQ

Q1: What is the CJ34 electric operating mechanism used for?

A: The CJ34 is designed for disconnect switches and grounding switches used in GIS and high-voltage switchgear systems.

Q2: What voltage range is supported?

A: The mechanism is suitable for applications from 40.5kV to 252kV.

Q3: Does the mechanism support manual operation?

A: Yes. Both electric and manual operating modes are available.

Q4: What transmission system is used?

A: The CJ34 uses a worm gear and worm shaft transmission system for stable torque output and smooth operation.

Q5: What protection features are included?

A: The mechanism includes automatic clutch disengagement and limit switch motor cut-off protection.

Q6: What is the output torque?

A: The standard output torque is 128 N·m.

Q7: What is the mechanical service life?

A: The mechanism is designed for more than 10,000 operating cycles.

Q8: Can the output angle be customized?

A: Yes. The standard output angle is 60° ±1°, and customized angles can be provided upon request.

Q9: Is the CJ34 suitable for outdoor substations?

A: Yes. Its robust construction and reliable transmission system make it suitable for demanding utility environments.

Q10: Can OEM customization be supported?

A: Yes. Voltage configurations, output angles, and interface requirements can be customized for OEM and EPC projects.