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Switchgear Control Components

Your Professional Ring Main Unit Operating Mechanism Supplier

 

Wenzhou Shuowei Electric Co., Ltd. （SUVELL）is a high-tech enterprise specializing in the research, development, production and sales of transformer accessories, switch cabinet accessories, cable accessories, power fittings and transmission line accessories.

Our product portfolio includes pad-mounted transformers, pole-mounted transformers, oil-immersed load break switches, switchgear systems, and switchgear components.

 

 
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Why Choose us
 
 

Quality Assurance

The company is equipped with comprehensive production facilities and a robust testing system to ensure that all products meet international standards and satisfy customer requirements.

 
 
 

Professional Solution

With extensive experience and personalized one-to-one service, we are capable of assisting you in selecting suitable products and providing professional answers to technical inquiries.

 
 
 

Reasonable Price

Supported by a dedicated procurement and cost-control team, we strive to minimize production costs and optimize profit margins in order to offer you competitively priced solutions.

 

 

Parameter

 

 

Item

Unit

Circuit Breaker Unit

Load Switch Unit

Switch-Fuse Combinations Unit

Rated Voltage

kV

12

12

12

Rated Frequency

Hz

50

50

50

Rated Current

A

630/1250

630/1250

Dependent on Fuse Current Rating

Rated Insulation Level

 

 

 

 

- Power Frequency Withstand Voltage (Phase-to-Phase/Phase-to-Ground)

kV

42

42

42

- Power Frequency Withstand Voltage (Vacuum Interrupter/Isolation Gap)

kV

48

48

48

- Power Frequency Withstand Voltage (Control and Auxiliary Circuits)

kV

2

2

2

- Lightning Impulse Withstand Voltage (Phase-to-Phase/Phase-to-Ground)

kV

75

75

75

- Lightning Impulse Withstand Voltage (Vacuum Interrupter/Isolation Gap)

kV

85

85

85

Rated Short-Time Withstand Current

kA

20 (25)/45

20 (25)/45

-

Rated Peak Withstand Current

kA

50 (63)

50 (63)

-

Rated Short-Circuit Making Current

kA

50 (63)

50 (63)

Limited by High-Voltage Fuse

Rated Short-Circuit Breaking Current

kA

20 (25)

20 (25)

Limited by High-Voltage Fuse

Rated Transfer Current

A

-

-

1700

Rated Active Load Breaking Current

A

-

-

-

Rated Closed-Loop Breaking Current

A

630

630

-

Internal Arc Fault Test (AFLR Class)

kA/S

20 (25)/0.5S

20 (25)/0.5S

-

Partial Discharge (at 1.2Ur)

PC

≤10

≤10

-

Ingress Protection (IP) Rating (Cabinet)

-

IP4X

IP4X

IP4X

Main Circuit Resistance

μΩ

≤120

≤120

-

Mechanical Endurance

 

 

 

 

- Circuit Breaker/Load Switch

Times

10000

10000

10000

- Disconnector/Grounding Switch

Times

3000

3000

3000

 

SW70V-12KV 125A 3P Solid-insulated RMU Core Assembly

 

Benefits of Ring Main Unit Operating Mechanism

High reliability: The combination of load switches and fuses enables the fuse to quickly cut off faults in case of short circuits, with better protection effect.

 

Small size and simple structure: It occupies less space and is suitable for places with limited space.

 

Low operation and maintenance workload: The operating mechanism is simple, with fewer parts, resulting in low operation and maintenance costs.

 

Low cost: It has high cost performance and is widely used in medium and low voltage distribution networks.

 

Application of Ring Main Unit Operating Mechanism
 

Urban Power Networks

Ring main unit operating mechanisms are widely used in metropolitan areas for the efficient control of electricity distribution.

Industrial Plants

They are used in factories and plants to provide power to machinery and production processes.

Commercial Buildings

Other shopping malls, office buildings, and commercial establishments depend on ring main unit operating mechanisms to guarantee reliable power for lighting, elevators, and HVAC systems.

Transportation Networks

Ring main unit operating mechanisms are important in airports, metros, and train stations for sustaining power to Thameslink lighting and signaling systems.

Underground Power Systems

In addition, ring main unit operating mechanisms can be found in underground electrical systems because of their small size and environmental durability.

Remote Areas

These places are considered power deserts, lacking proximity to energy. In such regions, ring main unit operating mechanisms are essential to ensure dependable power in off-grid systems.

 

 

Delivery Information

Shipping Methods: We offer a variety of shipping options, including sea freight, air freight, railway transportation, and international express delivery, to meet the diverse needs of our customers.

 

Estimated Delivery Time: We will provide you with the estimated delivery time for your order, which will be clearly stated in the formal order to ensure your rights are protected, allowing you to arrange for the receipt of your goods in a timely manner.

 

Order Tracking: We provide order tracking services, allowing you to stay informed about the current status and expected arrival time of your order. Detailed inspection information and shipping manifests, including photos and videos, are provided to ensure the security of your transactions.

SW71-12KV 125A 3P Split-type Switch-fuse Combinations RMU Core Assembly

 

 

FAQ

 

 

Q: What is the operating mechanism of a disconnector?

A: The operating mechanism of the disconnector comprises a pair of side plates arranged face-to-face, an energy storage part and a divide-shut brake part. The energy storage part is arranged between the pair of the side plates in a pivot revolving mode.

Q: Do you have ability for OEM/ODM cooperation?

A: OEM/ODM cooperation is welcomed. And we have full experience about them.

Q: We wants to know month capacity.

A: lt depends on which model. Generally, month capacity can reach near 100,000pcs.

Q: What are the different types of operating mechanisms?

A: The choice of operating mechanism can significantly impact the performance of circuit breakers. Each type of mechanism—spring, hydraulic, motor drive, and magnetic—has its unique advantages and suitability for different voltage levels and applications.

We're professional ring main unit operating mechanism manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale bulk ring main unit operating mechanism in stock here from our factory. Contact us for quotation.

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