The ZN63-12 Indoor Vacuum Circuit Breaker from China's Jinhand Electrical is designed for 12kV/50Hz three-phase systems. As a leading manufacturer and factory supplier, we offer this integrated spring-operated unit in fixed or withdrawable configurations for reliable protection and control of industrial power equipment.
1.Protection and Control: Serves as an essential protective and control unit for power equipment in industrial and mining enterprises, enhancing the reliability of electrical systems.
2.Versatile Installation Options: Can be used as either a fixed-installation unit or as a withdrawable unit when paired with a chassis truck, providing flexibility based on installation requirements.
3.Integrated Design: The integration of a spring-operated mechanism with the breaker body simplifies operation and improves the overall efficiency of the circuit breaker.
| Project | Unit | Parameter | ||||
| Rated Voltage | kV | 12 | ||||
| Rated Frequency | kV | 50 | ||||
| Rated Insulation Level | 1min Power Frequency Withstand Voltage(RMS)(Phase-to-Phase,Phase- to-Ground,Vacuum Interrupter) | 42 | ||||
| Lightning Impulse Withstand Voltage(Peak)(Phase-to-Phase,Phase-to- Ground,Vacuum Interrupter) | Hz | 75 | ||||
| Rated Current | A | 630 | 630 | 1250 | 1600 | |
| 1250 | 1250 | 1600 | 2000 | |||
|
|
|
2000 | 2500 | |||
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|
|
2500 | 3150 | |||
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|
|
|
4000 | |||
| Rated Short-Circuit Breaking Current | kA | 20 | 25 | 31.5 | 40 | |
| Rated Short-Time Withstand Current(Rated Short-Time Thermal Withstand Current) | 20 | 25 | 31.5 | 40 | ||
| Rated Short-Circuit Making Current | 50 | 63 | 80 | 100 | ||
| Rated Peak Withstand Current(Rated Dynamic Withstand Current) |
|
50 | 63 | 80 | 100 | |
| Rated Short-Circuit Duration(Rated Thermal Withstand Time) | S | 4 | ||||
| Rated Operating Sequence |
|
Open-0.3s-Close/Open--180s-Close/Open | ||||
| Open-180s-Close/Open-180s-Close/Open | ||||||
| Rated number of short-circuit current breaking operations | Times | 30/20(40kA) | ||||
| Mechanical life |
|
10000 | ||||
| Rated single capacitor bank breaking current |
|
630 | ||||
| Rated back-to-back capacitor bank breaking current |
|
400 | ||||
| Phase-to-phase earth fault breaking current | kg | 27.4 | ||||
| Permissible cumulative wear thickness of moving and fixed contacts |
|
3 | ||||
1.Rated Voltage and Frequency: Designed for three-phase AC systems with a rated voltage of 12kV and a frequency of 50Hz, ensuring compatibility with standard electrical infrastructure.
2.Indoor High-Voltage Switching Device: Specifically engineered for indoor applications, making it suitable for various settings within industrial environments.
3.Robust Construction: Built to withstand the demands of industrial and mining operations, ensuring durability and long-term performance.
4.Spring-Operated Mechanism: The spring-operated mechanism allows for reliable and efficient operation, contributing to the circuit breaker's interrupting performance.
1.Integrated Spring Mechanism: The operating mechanism is highly integrated with the breaker body, reducing connection links and improving reliability.
2.Modular Contact System: Contacts can be replaced individually after wear without replacing the entire interrupter.
3.Smart Monitoring Interface: Reserved interfaces for temperature and mechanical characteristic monitoring, supporting condition-based maintenance.
4.Ergonomic Operation Design: Operating handles comply with ergonomics, with clear opening/closing indicators.
5.Safety Interlock Devices: Comprehensive mechanical and electrical interlocks prevent misoperation.
1.Professional Manufacturing Experience: Over a decade focused on R&D and manufacturing of high-voltage switching equipment with an experienced technical team.
2.Strict Quality Control: Products undergo full type testing by the National High-Voltage Electrical Apparatus Quality Supervision and Inspection Center.
3.Comprehensive Service System: Provides end-to-end services from selection consultation and installation guidance to after-sales maintenance.
4.Flexible Customization Capability: Supports customized design and production for special parameters and environmental conditions.
5.Global Project Experience: Products have been successfully applied in power projects in over 30 countries, adapting to various grid standards.
Q1: What is the difference between fixed and withdrawable configurations?
A: Fixed configuration is directly installed in the switchgear, with a simple structure. Withdrawable configuration is mounted on a truck, allowing easy withdrawal for maintenance without affecting other circuits.
Q2: What is the maintenance interval for the circuit breaker?
A: Professional inspection is recommended every 3-5 years. Daily checks can be performed via the observation window to monitor vacuum interrupter color changes.
Q3: Is it suitable for frequent operation scenarios?
A: Mechanical life of 10,000 operations meets electrical lifespan standards, suitable for medium-frequency operation scenarios. For higher frequencies, specialized models are available.
Q4: Does it support smart substation interfaces?
A: Yes, it can be configured with intelligent controllers supporting the IEC61850 communication protocol.
Q5: Are special tools required for installation?
A: Standard installation requires only general tools. We provide detailed installation manuals and video guidance.
1.Pre-Sales Service: Free technical selection consultation and solution design.
2.During Sales Service: Provides installation guidance drawings and on-site technical support.
3.Training Service: Offers operation and maintenance training to ensure users master equipment usage.
4.Spare Parts Support: Long-term supply of genuine spare parts with fast logistics support.
Thanks to outstanding product quality, we have established long-term partnerships with customers in over 30 countries. We support various trade terms such as EXW, FOB, and CIF, providing professional shockproof and moisture-proof packaging to ensure transportation safety, along with complete export documentation and logistics tracking services.
Following more than ten years of relentless development, Jinhand has risen to be one of the top manufacturers and suppliers of electrical equipment in China. Our factory integrates a great many advanced technologies and facilities, and we encourage you to order our premium, cost-efficient China-made products.
Address
No. 188, Wei 15th Road, Yueqing City, Wenzhou City, Zhejiang Province, China
