Developed by China-based manufacturer Jinhand Electrical, this new-generation Integrated Primary-Secondary Pole Mounted Circuit Breaker Set meets national grid standards. As a reliable factory and supplier, our device features remote control, fault detection, and automated protection for 12kV lines. Internationally certified, it enhances power reliability for global customers.
1.Enhanced Fault Detection: Capable of detecting ground fault currents and overcurrent faults, providing comprehensive protection and improving system safety.
2.Increased Reliability: Automatically clears single-phase ground faults and phase-to-phase short-circuit faults, significantly enhancing the reliability of power supply.
3.Advanced Communication Capabilities: Equipped with remote signaling, telemetry, and remote control functions, facilitating effective monitoring and management of power distribution.
| Project | Unit | Parameter | ||
| Rated Voltage | kV | 12 | ||
| Rated Current | A | 630 | ||
| Rated Frequency | Hz | 50 | ||
| RatedInsulation Level | Main Circuit 1min PowerFrequency Withstand Voltage | Phase-to-phase,phase-to-ground | kV | 42 |
| Contact gap | 48 | |||
| Lightning Impulse Withstand Voltage(Peak) | Phase-to-phase,phase-to-ground | 75 | ||
| Contact gap | 85 | |||
| Secondary Circuit 1min Power Frequency Withstand Voltage | 2 | |||
| Rated Short-Circuit Breaking Current(RMS) | kV | 20、25 | ||
| DC Component of Rated Short-Circuit Breaking Current | % | 51 | ||
| DC Time Constant of Rated Short-Circuit Breaking Current | ms | 45 | ||
| Rated Short-Circuit Making Current(Peak) | kA | 50、63 | ||
| Rated Short-Time Withstand Current(RMS) | kA | 20、25 | ||
| Rated Peak Withstand Current | kA | 50、63 | ||
| Number of Rated Short-Circuit Breaking Operations | Times | 30 | ||
| Rated Short-Circuit Duration | S | 4 | ||
| Mechanical Life | Times | ≥10000 | ||
1.Integrated Design: Developed as an integrated primary-secondary circuit breaker system, aligning with national grid standards and ensuring compliance with industry regulations.
2.Advanced Technology Integration: Incorporates electronic voltage sensors, electronic current sensors, energy metering modules, and high-speed fault transient recording for improved performance and functionality.
3.Versatile Installation: Can be installed at responsibility demarcation points on 12kV distribution lines, branch lines, or end-user lines, making it adaptable to various applications in power distribution systems.
1.Integrated Intelligent Protection: Combines voltage/current sensors with protection and control units to enable accurate detection and rapid clearance of ground faults and overcurrent faults, supporting distribution automation functions.
2.High Reliability Design: Rated short-circuit breaking current up to 20/25 kA, mechanical life ≥10,000 operations, with strong electrical and mechanical durability.
3.Comprehensive Communication Support: Features telemetry, telecontrol, and remote signaling functions, supporting standard communication protocols for remote monitoring and control.
4.Flexible Installation Adaptability: Suitable for 12kV distribution line responsibility demarcation points, branch lines, and user ends, with flexible installation methods adaptable to various application scenarios.
5.Complies with State Grid Standards: Strictly adheres to State Grid primary-secondary integration technical specifications, ensuring good system compatibility and interoperability.
1.Condition Monitoring and Early Warning: Integrated fault recording and operational data logging support fault prediction and condition assessment for preventive maintenance.
2.Modular Maintenance Design: Secondary control units, power modules, etc., support independent replacement, reducing repair complexity and costs.
3.Remote Setting and Upgrades: Supports remote parameter adjustments and program upgrades, minimizing on-site work frequency and improving operational efficiency.
1.Pre-Assembled and Tested as Complete Unit: Factory assembly and functional testing of primary and secondary components reduce on-site installation and commissioning time.
2.Standardized Packaging for Transport: Uses industrial shockproof and moisture-proof packaging, supports shipment as complete units or separate modules, suitable for long-distance and international freight.
3.Installation Guidance Service: Provides installation drawings, operation manuals, and video materials, with on-site or remote installation guidance available.
1.High Protection Rating Design: Overall protection rating not less than IP67, resistant to rain, snow, dust, salt spray, and other harsh environments.
2.Stable Operation Across Wide Temperature Range: Operating temperature range -40°C to +70°C, suitable for extremely cold and hot regions.
3.Strong Electrical Insulation Performance: Lightning impulse withstand voltage 85kV, power frequency withstand voltage 48kV, with high insulation reliability.
1.Fully Automated Production Lines: Utilizes robotic welding, automated coating, and intelligent assembly processes to ensure product consistency and quality stability.
2.Integrated Sensor Technology: Deep integration of electronic transformers with the circuit breaker body avoids installation errors and loosening risks associated with traditional transformers.
3.Rigorous Factory Testing: Each unit undergoes multiple tests including power frequency withstand voltage, mechanical characteristics, and communication debugging to ensure performance compliance.
1.Fault Transient Recording Function: Supports high-speed fault recording, capturing electrical parameter changes before and after faults to aid in fault analysis and location.
2.Integrated Energy Metering Module: Optional energy metering function supports bidirectional energy measurement, suitable for distribution networks with distributed energy integration.
3.Local Intelligent Logic Decision-Making: Includes multiple protection logics such as voltage-time and current-time types, supporting local automation without communication.
1.In-House R&D and Production of Core Components: Self-designed and manufactured core modules such as breaker mechanisms, electronic transformers, and intelligent terminals ensure supply chain security and control.
2.Strategic Supplier Partnerships: Long-term cooperation with renowned domestic and international component suppliers ensures material quality and stable supply.
3.Flexible Production Capacity: Supports multi-variety, small-batch customized production for quick response to differentiated customer needs.
Having gone through more than a decade of innovation-focused growth, Jinhand is now one of the leading manufacturers and suppliers of electrical equipment in China. Our factory employs various advanced technologies and equipment, and we welcome you to buy our top-quality, competitively priced China-made products.
Address
No. 188, Wei 15th Road, Yueqing City, Wenzhou City, Zhejiang Province, China
