The manufacture of the circuit breaker conforms to our national standard GB1984-2003 "AC High Voltage Circuit Breaker", DL/T403-2000 "3.6~40.5kV Indoor Vacuum Circuit Breaker Ordering Technical Conditions" and relevant IEC standards, and has a reliable interlocking function. The operating mechanism of the circuit breaker is the spring energy storage type, which can be operated by AC or DC energy storage and manual operation. At the same time, the circuit breaker can be equipped with a long-life permanent magnetic actuator with a mechanical life of 60,000 times, which can be used for extremely frequent operations. The circuit breaker is designed in the form of a front and rear sub-assembly structure, which can be used as a fixed installation unit or a mid-mounted unit with a chassis vehicle.

 

ZN63-24 type indoor high-voltage AC vacuum circuit breaker is our major product, which adopts the integrated structure of the operating mechanism and the noumenon of the circuit breaker, which can be used either as a fixed installation unit or with an exclusive propulsion mechanism to form a trolley unit.

 

ZN63-24 type circuit breaker conforms to the standard requirements of GB1984-2003 "High-voltage AC Circuit Breakers", DL/T402-1999 "Technical Conditions for Ordering AC High-voltage Circuit Breakers" DL/T403-2000 "Technical Conditions for Ordering 12-40.5KV High-voltage Vacuum Circuit Breakers" and the relevant requirements of IEC62271-100 "High-voltage AC Circuit Breakers".

 

Breaker unit with bundled primary contact parameters

 

 

The use of the environment

(Hand truck type indoor high-voltage vacuum circuit breaker ZN63(VS1)-24)

1. altitude: below 1000m;

2. ambient temperature: +40℃, minimum -15℃

3. relative humidity: daily average not more than 95%, monthly average not more than 90%

4. Seismic intensity: less than 8

No fire, explosion, no corrosive gas and violent vibration places.

 

Technical parameters

1 Rated voltage kV 24

2 Rated frequency Hz 50

3 Rated current A 630, 1250, 1600, 2000, 3150

4 Rated short-circuit breaking current kA 20 25 31.5

5 Rated short-circuit closing current (peak) kA 50 63 80

6 Rated short-circuit duration s 4

7 Rated short-circuit breaking current breaking times 30 times

8 Rated operation sequence

0-0.3s-CO-180s-CO

9 Rated lightning surge withstand voltage (break) kV 125

10 rated 1min frequency withstand voltage (break) kV 65

11 Closing time ms ≤70

12 Breaking time ms ≤50

13 Mechanical life 20000 times

14 Rated energy storage and operating voltage V 220/110

15 Opening time ms ≤80

16 Energy storage time s ≤10

 

Mechanical characteristics adjustment parameters

 

(hand-operated indoor high-voltage vacuum circuit breaker ZN63(VS1)-24)

1 Contact opening distance mm 14±1

2 Contact overtravel mm 3.5±1

3 Closing speed m/s 1.0 ±0.2

4 Breaking speed m/s 1.3±0.2

5 Contact closing bounce time ms ≤2

6 Rated contact pressure N 20kA(2400±200) 25kA(2400±200) 31.5kA(3100±200)

7 Three-phase closing and dividing disparity ms ≤2

 

Manufacturing process

We only provide a general overview of the manufacturing process for the ZN63-24 vacuum circuit breaker, with specific details varying from different manufacturers, the main steps are as follows:

 

• Design and engineering

Engineers design and develop product specifications based on industry standards and customer requirements, including material selection, determination of electrical ratings, and design of mechanical construction.

 

• The Component Making:

Individual components of vacuum circuit breakers are manufactured separately, including enclosures, contact assemblies, operating mechanisms, vacuum interrupters, and other parts, using materials that may vary and typically include metals such as copper, steel, and aluminium.

 

• Assembly:

Once finishing the individual components, assemble them into a completed vacuum circuit breaker according to actual specifications. including mounting the vacuum circuit breaker, connecting the electrical contacts, installing the operating mechanism, and integrating the control and protection devices.

Installation of vacuum system:

 

The vacuum interrupter is an essential part of the circuit breaker and needs to be operated properly in needs to be in a vacuum environment. The vacuum system is a ground pump and valve installed and connected to the circuit breaker. The vacuum system is responsible for creating and maintaining the necessary vacuum conditions in the interrupter chamber.

 

• Testing and Quality Assurance

Once assembling the circuit breaker done, we must have a test to ensure that it meets the required performance standards and specifications, including electrical testing, mechanical testing, and functional testing to ensure quality to identify and correct any manufacturing defects or deviations from expected standards.

 

• Finishing and Packaging:

After successful testing, the vacuum circuit breaker is subjected to finishing processes such as cleaning, painting, and labelling, and then carefully packaged so that it will not be damaged during storage and arrive at its destination intact.

 

• Distribution and Installation:

Completed ZN63-24 vacuum circuit breakers are distributed to customers or authorized distributors for installation in various electrical systems, such as distribution networks, industrial facilities, or commercial buildings. Proper installation procedures and guidelines provided by the manufacturer should be followed to ensure safe and efficient operation.

 

The company relies on the strong supplying chain and professional technical team of the industrial base in product design, advanced production lines, the use of advanced integrated block structure, and sophisticated processing technology to provide users with safe, reliable, efficient, maintenance-free, long-life quality products, to solve the user's problems in the process of use.

 

All of us unite and work hard to provide partners with the warmest and most caring service before, during, and after the sale, and the safest and most comfortable experience.

 

http://www.ygvcb.com/