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Switchgear

Your Professional Switchgear 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.

 

 
 
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

Parameters

Rated Voltage

kV

12

Rated Current

A

630

Rated short time current (4s)

kA

25

Rated peak withstand current

kA

50

Rated short circuit closing current (peak)

kA

50

Rated active load breaking current

A

630

Rated closed-loop breaking current

A

630

Rated cable-charging breaking current

A

10

Rated breaking transfer current of combination apparatus

A

3700

1min power frequency withstand voltag

Interphase relative vacuum fracture

kv

42

Isolating fracture

kV

48

Lightning impulse withstand voltage

Interphase relative vacuum fracture

kV

75

Isolating fracture

kV

85

Mechanical life

Breaker

Time

10000

Isolation knife, grounding knife

Time

3000

Level of protection

 

IP4X

Enclosure protection class

 

IP4X

Partial discharge

pC

≤20 (Measured at 1.2Ur)

 

Benefits of Switchgear

Enhanced Safety Features

One of the most significant advantages of indoor switchgear is its superior safety features. Indoor switchgear is enclosed in tough metal boxes or enclosures, which provide extra protection against electrical shocks or electrocution. Another benefit for professionals is that no part is in contact with any live component inside, thus ensuring utmost safety. This safety assurance is crucial, especially in industrial contexts where continuity of operations and employee protection are key factors. Due to its ability to minimize risks associated with visible electrical parts, indoor switchgear improves workplace safety standards.

Space-Saving Design

Indoor switchgear has been designed to require less space during installation than outdoor systems. In addition, it eliminates the need for external shelters or protection from weather elements, thus optimizing the floor space inside buildings or dedicated switchgear rooms. In urban settings where land is limited, this small size is beneficial. Consequently, they can be deployed in remote places or even within neighborhoods without interfering with how they operate, thus helping to realize efficient land usage.

Environmental Protection Switchgear
Switch Equipment For Ring Main Unit

Protection from Environmental Factors

Indoor switchgear is protected from dirt, moisture, and other impurities because it operates indoors, unlike outdoor equipment that floods, snow storms, or other weather disasters may damage. Such security measures improve how long the tools serve while still being functional, hence mitigating any losses associated with poor performance as a result of climatic changes. In the manufacturing world, dust particles float around like flies with acid around them; therefore, using indoor switchgear ensures that they will always work on them no matter what happens outside their homes. These devices do not require frequent repairs and, hence, last longer, reducing the total expenses of maintaining them.

Improved Accessibility for Maintenance

The other significant benefit of indoor switchgear is its maintenance accessibility. Since everything is situated indoors, maintenance staff can conveniently access the machine for inspection, servicing, and repairs. Such accessibility supports a proactive maintenance approach that optimizes the device’s operation and prevents possible problems from getting out of hand. Efficient maintenance procedures improve machine reliability and operational continuity. To prevent halting production during regular upkeep, indoor switchgear helps to ensure continuous processes in various industries and their firms.

 

The Structure Of Switchgear
 

Circuit Breakers

These are the heart of the switchgear circuit. They can interrupt the flow of current when a fault occurs, e.g., short-circuiting or overloading. Thus, they prevent damage from happening in an electrical system, which also promotes safety features.

Disconnect Switches

Such switches disconnect some sections of a power distribution system so that they can be safely worked on without switching off the whole network.

Fuses

They provide overcurrent protection by breaking down the circuit when there is excessive current, preventing system damage.

Relays

These devices detect faults, making circuit breakers operate on time to respond quickly to electrical problems.

Busbars

These are conductive rods that convey electric power throughout the switchgear, connecting its multiple parts.

Measuring Instruments

Measuring instruments refer to all appliances used to measure current, voltage, or other electrical parameters, and they play an important role in power management.

 

 

Application of Switchgear

Dwelling House Situations: Switchgear is designed for residential purposes and is typically housed within specific utility rooms or basements to ensure safety and reliable electricity distribution.

 

Business Premises Situations: Appropriate for office blocks, shopping malls, or any commercial building where limited space is paramount and maintaining good appearance is crucial.

 

Industrial Sites Circumstances: These devices are used in manufacturing plants, processing industries, and other industrial settings to control electrical systems and safeguard them.

Cable Branch Cabinet

 

Additional Information

 

 

Shipping

We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.

Terms Of Payment

We usually accept T/T, L/C, Paypal, Credit card, etc. If you prefer other payments terms, please feel free to discuss with us.

 

 

FAQ

 

 

Q: What are the three main types of switchgear?

A: There are three primary types of switchgear: low voltage (less than 1 kV), medium voltage (up to 36 kV), and high voltage (above 36kV).

Q: What are the two basic functions performed by switchgear?

A: One of the basic functions of switchgear is protection, which is interruption of short-circuit and overload fault currents while maintaining service to unaffected circuits. Switchgear also provides isolation of circuits from power supplies.

Q: Is switchgear AC or DC?

A: Electrical systems usually either carry alternating current (AC) or direct current (DC) and use differently designed switching devices. Depending on which type of current the system is carrying, the switchgear will be classified as either AC switchgear or DC switchgear.

Q: How many types of relays are in switchgear?

A: There are a variety of different types of relays for a variety of different uses. The three most commonly used types are electromechanical relays (EMR), solid-state relays (SSR), and Reed relays.

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