Grounding Switch Jn15

The Usune Grounding Switch Jn15 is suitable for 12kV and below 50Hz AC power systems. Specifically designed for circuit safety grounding, it can be used with various high-voltage switchgear to provide critical grounding protection during equipment maintenance or power outages. By reliably releasing residual voltage and withstanding short-circuit currents, it ensures the safety of maintenance personnel and electrical equipment.

As a professional manufacturer, Usune's product series boasts a compact and robust structure, enabling stable operation in harsh indoor environments with high humidity, high dust levels, and moderate pollution. It fully complies with GB1985-89 and international IEC129 standards, ensuring product consistency and global applicability.

Core Technical Parameters

Core Product Advantages

1. Safe and Reliable

The Grounding Switch Jn15 is equipped with a precision mechanical interlocking mechanism to prevent misoperation (such as closing under energized conditions); it possesses excellent short-circuit withstand capability, capable of withstanding a short-time current of 31.5kA/4s and a peak current of 80kA, maintaining structural integrity in the event of a fault; high-quality insulation components offer high insulation strength, are moisture-resistant and pollution-resistant, and ensure stable long-term operation.

2. Compact and Easy to Use

The optimized compact structure allows for flexible installation in various high-voltage switchgear (such as KYN28 and HXGN types); clear status indicators and tool-free access ports facilitate convenient operation and maintenance; moving parts are made of corrosion-resistant materials and precision lubricated, ensuring smooth operation for over 2000 cycles.

3. Wide Applicability and Standard Compliance

The Grounding Switch Jn15 is compatible with 6.6–12kV systems and can be matched with all mainstream high-voltage switchgear. It fully complies with GB1985-89 and IEC129 standards, making it suitable for various projects both domestically and internationally. It can operate reliably in indoor environments with temperatures ranging from -10℃ to +40℃, altitudes ≤1000m, humidity 95%, and pollution levels of Class II.

4. Factory Quality Assurance

The Grounding Switch Jn15 is manufactured in Usune's advanced factory, using automated production lines and rigorous quality testing. Each product undergoes dynamic, static, and insulation tests before leaving the factory. A professional R&D team can provide customized configurations based on specific voltage, current, or installation requirements.

Real-world Application Case: Urban Commercial Complex Power Distribution Project

1. Project Background

A 320,000㎡ commercial complex in East China requires a safe and reliable 10kV power distribution system, including eight KYN28A-12 type high-voltage switch rooms. Stable grounding switches are needed to ensure maintenance safety and system protection.

2. Solution and Implementation

The contractor selected Usune Grounding Switch Jn15 (64 units in total), matching all incoming and outgoing lines and PT cabinets. Installation was carried out according to standard procedures, achieving mechanical and electrical interlocking with the switchgear. During commissioning, operation, interlocking, and short-circuit withstand testing all met design and national standards.

3. Project Achievements

- Operational Safety: Operated without failure for over 3 years, completing 18 maintenance cycles without any electrical safety hazards.
- System Stability: Successfully withstood 3 short-circuit faults without equipment damage, shortening power outage recovery time.
- Efficient Maintenance: Clear status indicators and convenient operation, reducing maintenance grounding time by approximately 40%.
- Customer Feedback: "The Usune JN15-12 switch is reliable and easy to use, crucial for the overall power safety of the complex. It will be a priority choice for future projects."

Main Technical Parameters

Outer Dimensions

Project Reference

Cas-space Rocket Launch Project

Test Report

FAQ

Q1: What types of switchgear can the Usune Grounding Switch Jn15 be compatible with?

A: Compatible with all mainstream indoor high-voltage switchgear, such as KYN28A-12, HXGN-12, XGN2-12, etc., suitable for 6.6kV/10kV/11kV/12kV systems and standard 150mm/165mm/210mm/250mm phase spacing; special cabinets can be customized by contacting Usune.

Q2: What maintenance is required for Grounding Switch JN15?

A: Recommended maintenance plan:
- Every 6 months: Visual inspection, checking for wear, corrosion, loose connections, and interlocking conditions.
- Annually: Operational test, checking the smoothness of opening and closing and the correctness of interlocking.
- Every 5 years: Performance test, verifying insulation and short-circuit withstand capability according to standards.
- Every 2 years: Lubrication maintenance, applying lubricant to moving parts to extend service life.

Q3: Can JN15-12 be used at altitudes above 1000m or in corrosive environments?

A: Standard models are suitable for altitudes ≤1000m, Class II pollution, and non-corrosive environments. For altitudes >1000m or corrosive (chemical, sea salt) environments, Usune offers enhanced products, including reinforced insulation, anti-corrosion coatings, and altitude-dependent derating design. Contact our technical team for customized solutions.

Conclusion

The Usune JN15-12 series indoor high-voltage grounding switches combine safety, reliability, and versatility, adapting to 6.6–12kV power systems. They meet global standards and have been proven in actual projects, making them an ideal choice for grounding protection. As a professional Chinese supplier, Usune provides high-quality products and comprehensive technical support for various projects in power distribution, industry, and commerce.