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Load Break Switch and Combination Appliance

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Your Professional Load Break Switch and Combination Appliance Supplier

 

 

Our goal is to become your true partner in the field of chassis truck for vcb in China. Shaanxi West Power Tongzhong Electrical Co., Ltd. is a leading manufacturer with over 20 years of experience, specializing in high quality vacuum circuit breakers, switchgears, and a wide range of electrical products. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

 

 
 
Why Choose Us
 

Our R&D: Our R&D team consists of senior technical experts with decades of experience in the design and manufacture of high and low voltage electrical equipment. Their expertise, combined with our advanced facilities, enables us to always lead industry trends and continuously optimize our product portfolio.

 

Quality control: We are able to accurately and efficiently produce a wide range of high-quality electrical products that comply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality.

 

Customization requirements: We know that our customers' needs are different, so each product can be designed according to the specific needs of the customer.

 

Our services: In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

 

Advantages of Load Break Switch and Combination Appliance

 
 
01
 

Safe and reliable

It adopts a combination of permanent magnet mechanism + spring mechanism, and the permanent magnet mechanism is used for normal operation; when the permanent magnet mechanism fails, the manual closing and opening operations are safe and reliable. The circuit breaker and the cabinet can achieve reliable mechanical interlocking to ensure the safety of the operator.

 
02
 

High conductivity

Reasonable conductive circuit design meets the temperature rise level of 1.1 times the rated current;

 
03
 

Highly integrated and intelligent configuration

Wireless temperature intelligent monitoring solution can be added for self-power design, which is safe and maintenance-free. The combined electrical appliance is equipped with an electrically operated isolating switch and grounding switch, which does not require external equipment and supports one-button sequential control.

FK(R)N12-24 Load Break Switch And Combination Appliance

 

Specification of Load Break Switch and Combination Appliance

 

 

NO.

Parameter name

Unit

Data

1

Contact opening distance

Mm

9±1

2

Contact travel

Mm

3 ±0.5

3

Center distance between poles

Mm

150±1.5

4

Allowed wear thickness of moved and fixed contact

Mm

3

5

Average clsing speed

M/s

0.6±0.2

6

Average opening speed (average speed of first opening at 6mm)

M/s

1.1±0.2

7

Rated current pressure

N

2500±100/ 3100±200

8

Closing bounce

Ms

£2

9

Closing and opening are out of phase

Ms

£2

10

Closing time

Ms

30～70ms

11

Opening time

Ms

20～50ms

12

Isolation closing and opening action time

S

£40

13

Earthing closing and opening action time

S

£40

14

Main circuit resistance (after closing the circuit breaker and arc extinguishing chamber)

Mw

≤130

15

Energy storage power supply

V

DC110V(Voltage stabilization)

16

Opening and closing circuits

Passive shorting contacts

 

Types of Load Break Switch and Combination Appliance

 
 

Air break switches: These switches use air as the arc extinguishing medium. They are typically used in outdoor substations and overhead distribution lines. Air break switches are simple in design and reliable in operation.

 
 

Oil break switches: Oil break switches utilize oil as the arc extinguishing medium. When the switch opens, the arc formed between contacts is submerged in oil, which helps in extinguishing it quickly. Oil break switches are often used in indoor substations and transformer installations.

 
 

Vacuum break switches: Vacuum break switches use a vacuum as the arc extinguishing medium. They offer fast and efficient interruption of currents, making them suitable for various applications including medium and high voltage systems.

 
 

Sf6 (sulfur hexafluoride) break switches: Sf6 break switches use sulfur hexafluoride gas as the arc extinguishing medium. They are often used in high voltage applications where rapid arc extinction and high dielectric strength are required. Sf6 break switches are commonly used in high voltage substations and transmission lines.

 
 

Solid dielectric load break switches: These switches use solid dielectric materials such as epoxy resin for insulation and arc extinction. They are compact, environmentally friendly, and require minimal maintenance. Solid dielectric load break switches are commonly used in medium voltage distribution systems.

 

 

Features of Load Break Switch and Combination Appliance

 

 

VTZ-12GD-MT vacuum circuit breaker combination electrical appliance is a special vacuum circuit breaker for underground mining with rated voltage of 12kV and AC 50/60Hz. It adopts permanent magnet mechanism and has mechanical manual closing and opening functions. It is suitable for various places with explosion-proof requirements for power facilities. The trolley unit is used in conjunction with PJG9-10 switch cabinet.

 

Application of Load Break Switch and Combination Appliance

Distribution networks: Load break switches are commonly used in distribution networks to isolate sections of the grid for maintenance, repairs, or troubleshooting. They allow for the safe disconnection of power to specific areas without affecting the entire network.
Substations: Load break switches play a vital role in substations by providing isolation and sectionalization capabilities. They enable operators to isolate faulty equipment or sections of the substation while maintaining power flow to the rest of the system.
Overhead lines: Load break switches are often installed on overhead power lines to provide sectionalizing points and enable the isolation of specific line segments. They facilitate efficient fault location and restoration of power by isolating the affected section without disrupting service to other areas.
Transformer installations: Load break switches are used in transformer installations to isolate transformers from the rest of the electrical system for maintenance or replacement purposes.
Industrial facilities: Load break switches are employed in industrial facilities to provide isolation and control of electrical circuits feeding various equipment and machinery.

Commercial buildings

Load break switches are utilized in commercial buildings to isolate electrical circuits serving different areas or floors. They allow for localized maintenance or repairs without interrupting power supply to the entire building.

Emergency power systems

Load break switches are integrated into emergency power systems to provide manual or automatic transfer of power between utility and backup sources.

Railway electrification

Load break switches are used in railway electrification systems to isolate sections of the overhead catenary or third rail for maintenance or repair activities.

 

Packing and Shipping of Load Break Switch and Combination Appliance

 

 

Packing

Box

Shipping

Shipped by road, sea, rail

 

FAQ

 

Q: What is the purpose of a load break switch?

A: A load break switch is a protective device used in electrical installation to make and break load currents. It ensures that electrical equipment functions smoothly.

Q: What is the difference between a breaker and a load break switch?

A: While load break switches provide manual or remote isolation of circuits for maintenance and repair, circuit breakers offer automatic protection against overcurrent and short circuit faults.

Q: What is the difference between a recloser and a load break switch?

A: Load breaker switches ensure greater safety during maintenance procedures. They guarantee the safety of persons operating on or near the equipment by separating certain loads.

Q: What is the difference between a load break switch and an isolator switch?

A: A Load Break switch is used when isolation is required under load. An isolator switch is typically used in a domestic application or when loads can be turned off before the isolator is operated.

Q: What is the difference between 2 position and 4 position load break switch?

A: A two-position load break switch is the most common type and functions like a simple on/off switch. On the other hand, a four-position load break switch offers several options for the operator and is found in loop feed pad mount transformers.

Q: What is the structure of a load break switch?

A: The design of the SF6 gas insulated load break switch predominantly comprises two circuits: the main circuit and the earthing circuit, both enclosed within a dielectric casing constructed from epoxy resin.

We're professional load break switch and combination appliance manufacturers and suppliers in China, specialized in providing high quality products and service. If you're going to buy customized load break switch and combination appliance, welcome to get more information from our factory.

FK R N 12 Load Break Switch and Combination Appliance, VTZ SC 12GD Indoor Three Position Vacuum Circuit Breaker, load break switch and combination appliance

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