Ⅰ. Overview:
ZN63A-24(VS1) type indoor high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is rated voltage 24kV, three-phase AC 50Hz indoor high-voltage switch-gear, as power grid equipment, industrial and mining enterprise power equipment protection and control unit, suitable for the rated working current requiring frequent operation or multiple times to break the short-circuit current places.
The circuit breaker adopts the operating mechanism and circuit breaker body integrated or designed, can be fixed installation unit, can also be equipped with a special chassis car, to form a handcart unit for use.
Ⅱ. Model and meaning:
Ⅲ. Environmental conditions for use:
1. Altitude: no more than 2000m;
2. Ambient temperature: upper limit +40°C, lower limit -15°C (storage and transportation allowed at -30°C);
3. Relative temperature: the daily average is not more than 95%, the monthly average is not more than 90%;
4. There is no danger of fire, explosion, serious pollution, chemical corrosion and violent vibration.
Ⅳ. Main features and advantages:
1. Reliable modular spring operating mechanism, convenient installation and maintenance;
2. New high vacuum, ultra-low resistance type vacuum interrupter, strong breaking ability, fast insulation recovery speed, low contact resistance;
3. Complete specifications, rated current from 630A to 4000A, short circuit breaking current from 20kA to 50kA;
4. Two mounting methods: fixed type and handcart type;
5. Complete antimisoperation interlock to ensure the safety of personnel and equipment;
6. Easy to operate and minimal maintenance workload.
Ⅴ. Main technical parameters:
Circuit breaker main technical parameters (see Table 1);
Table 1 Main technical parameters of circuit breaker
|
No. |
Item |
Unit |
Data |
||||
|
1 |
Rated Voltage |
kV |
24 |
||||
|
2 |
Rated frequency |
Hz |
50 |
||||
|
3 |
Rated lightning impulse withstand voltage (peak) |
kV |
75 |
||||
|
4 |
Rated short-time frequency withstand voltage (1min) |
kV |
42 |
||||
|
5 |
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
40 |
50 |
|
6 |
Rated current |
A |
630 1250 |
630 1250 |
1250 1600 2000 2500 |
1250 2000 2500 3150 |
2000 2500 3150 4000 |
|
7 |
Rated short-time withstand current (RMS) |
kA |
20 |
25 |
31.5 |
40 |
50 |
|
8 |
Rated peak withstand current (peak) |
kA |
50 |
63 |
80 |
100 |
125 |
|
9 |
Rated short-circuit closing current (peak) |
kA |
50 |
63 |
80 |
100 |
125 |
|
10 |
Rated short-circuit current duration |
$ |
4 |
||||
|
11 |
Mechanical life |
Ops |
20000 |
||||
|
12 |
Secondary circuit frequency withstand voltage(1min) |
V |
2000 |
||||
|
13 |
Rated operating sequence |
O-t-CO-180s-CO O-t-CO-180s-CO |
|||||
Note:
When rated short-circuit breaking current is less than 40kA, t=0.3s;
When it is greater than or equal to 40kA, t=180s.
Circuit breaker mechanical characteristics (see Table 2)
Table 2 Mechanical characteristic parameters of circuit breaker
|
No. |
Item |
Unit |
Value |
|
1 |
Contact opening distance |
mm |
11±1 |
|
2 |
Contact travel |
mm |
3±0.5 |
|
3 |
Contact closing bounce time |
ms |
≤2(40kA≤3) |
|
4 |
Three-phase switching non-simultaneity |
ms |
≤2 |
|
5 |
Average closing speed |
m/s |
0.9~1.3 |
|
6 |
Average closing speed |
m/s |
0.5~0.8 |
|
7 |
Breaking time (rated voltage) |
ms |
≤50 |
|
8 |
Closing time (rated voltage) |
ms |
≤70 |
|
9 |
Rated closing and breaking operation voltage |
V |
AC110220,DC110220 |
|
10 |
Rated voltage of energy storage motor |
V |
DC110220 |
|
11 |
Rated power of energy storage motor |
W |
70(40kA 100) |
|
12 |
Energy storage time |
S |
10 |
|
13 |
Cumulative permissible wear thickness of dynamic and static contacts |
mm |
3 |
|
14 |
Resistance of main electric circuit |
630~1250A 1600~2000A over 2500A |
≤50μQ ≤40μ Ω ≤35y0 |
Ⅵ. Working principle of product structure:
6.1 The circuit breaker outline and installation dimensions are shown in Figure 1 to Figure as below: Withdrawable ZN63A Dimensions:
The mesh size of dynamic and static contacts is not less than 15mm, and the primary phase spacing is 210±1.5mm
|
Rated current(A) |
630 |
1250 |
1600 |
|
Rated short circuit breaking current(kA) |
2,025 |
20.25.31.5.40 |
31.5 |
|
Matching static contact size(mm) |
φ35 |
49 |
φ55 |
6.2 Action principle Figures as below are the structure diagram of the mechanism action:
closing release 17. Closing half shaft 18. Transmission claw
one-way clutch 20. Energy storage shaft 21. One-way bearing
Energy storage indicator 23. Bearing 24. Arm
buffer 26. Main shaft 27. Auxiliary switch
Opening spring 29. Opening release valve
OEM/ODM Services:
At Shaanxi Yuguang Electric Co., Ltd., we understand the importance of customization. That's why we offer comprehensive OEM and ODM services to meet your specific requirements. Whether you need private labeling or custom product development, our experienced team is here to assist you every step of the way.
Certificates:
We take pride in our commitment to quality and safety. Our products are certified to meet the highest industry standards, including:
3C Certification
ISO 9001 Certification
21 Utility Model Patents and Design Patents
Why Choose Us:
State-of-the-art Manufacturing Equipment
Extensive Testing Facilities
Comprehensive Quality Assurance Processes
ISO 9001 Certified Quality Management System
One-year Warranty on All Products
Large Production Capacity
FAQ:
Q: What is the warranty period for your products? A: We offer a one-year warranty on all our products.
Q: Can you customize products according to our specifications? A: Yes, we provide OEM and ODM services to meet your specific requirements.
Q: Are your products compliant with international standards? A: Yes, our products meet all relevant international standards.
Q: What is the lead time for orders? A: The lead time depends on the quantity and customization requirements. Please contact us for more information.
Q: Do you provide technical support? A: Yes, we offer comprehensive technical support to our customers.
Packaging:
Wooden Box Packaging
Carton Packaging
Foam-filled Packaging
Waterproof and Moisture-proof Packaging
Customized Packaging
International Standard Packaging
Logistics:
Sea Freight
Air Freight
Land Transportation
Multimodal Transport
Express Delivery Services
Contact Us:
Ready to take your electrical projects to the next level? Contact us today at ygvcb@hotmail.com to discuss your requirements and explore partnership opportunities with Shaanxi Yuguang Electric Co., Ltd. Let's create a brighter future together.
