TIANAN VT19-12/24 High Voltage Vacuum Circuit Breaker with 12/24 kV Rated

Meta Title:
VT19-12/24 High Voltage Vacuum Circuit Breaker | 12/24 kV 50Hz Indoor | TIANAN

Meta Description:
TIANAN VT19-12/24 High Voltage Vacuum Circuit Breaker for 12kV and 24kV indoor power distribution. 75/125 kV lightning impulse withstand voltage. GB certified for substations, industrial plants and renewable energy projects.

H1 Title:
TIANAN VT19-12/24 High Voltage Vacuum Circuit Breaker – 12/24 kV, 50Hz, Indoor Power Distribution Protection

Overview:
The TIANAN VT19-12/24 High Voltage Vacuum Circuit Breaker is a 3-phase indoor protection device rated for 12kV and 24kV power distribution networks. Engineered for reliable performance at altitudes up to 1000 meters and seismic resistance below Grade 8, this model is widely deployed in substations, industrial manufacturing facilities, renewable energy power plants (wind and solar), and commercial building high-voltage switchgear rooms. The vacuum interrupter technology ensures fast arc extinction, providing precise short-circuit protection and overload isolation for medium-voltage systems operating at 50Hz.

Technical Specifications:
Parameter Specification
Ambient Temperature Range -15°C to +40°C
Rated Voltage 12 / 24 kV
Rated Frequency 50 Hz
Maximum Altitude ≤ 1000 m
Earthquake Resistance < Grade 8
Average Opening Speed (12kV) 0.9~1.3 m/s
Average Opening Speed (24kV) 1.1~1.6 m/s
Average Closing Speed (12kV) 0.4~0.8 m/s
Average Closing Speed (24kV) 0.6~1.0 m/s
Opening Time 15~45 ms
Closing Time 30~70 ms
Overtravel 3.5 ± 0.5 mm
Rated Operation Sequence O-0.3s-CO-180s-CO
Rated Lightning Impulse Withstand Voltage 75 / 125 kV

Applications:
This high voltage vacuum circuit breaker is designed for a wide range of medium-voltage distribution scenarios, including:

• Power Substations: Provides reliable switching and fault isolation for 12kV and 24kV incoming and outgoing feeders.

• Industrial Facilities: Protects critical equipment such as motors, transformers, and capacitor banks in manufacturing plants.

• Renewable Energy Projects: Ensures safe grid interconnection and protection for wind turbine step-up stations and solar farm collection systems.

• Commercial Buildings: Installed in indoor switchgear rooms of high-rise office towers, hospitals, and large retail complexes.

• Mining and Metallurgy: Withstands harsh industrial environments with robust mechanical design and stable vacuum interruption performance.

Key Features:

• Vacuum Interruption Technology: Ensures rapid arc quenching with minimal contact erosion, extending service life and reducing maintenance frequency.

• High Insulation Reliability: Rated lightning impulse withstand voltage of 75kV (12kV rating) and 125kV (24kV rating), providing robust protection against voltage surges and lightning strikes.

• Stable Mechanical Performance: Average opening speed of 0.9~1.3 m/s (12kV) and 1.1~1.6 m/s (24kV) ensures reliable fault clearance under extreme conditions.

• Durable Construction: Designed for operation in ambient temperatures ranging from -15°C to +40°C, suitable for diverse climate zones.

• Seismic Resistant: Certified for seismic zones below Grade 8, ensuring operational stability during geological disturbances.

• Flexible Operation Sequence: Rated operation sequence O-0.3s-CO-180s-CO supports rapid reclosing requirements for grid stability.

Ordering and Logistics:
Minimum Order Quantity: 5 sets
Packaging Method: Secured on heavy-duty wooden pallets with protective wrapping to prevent damage during inland and maritime freight.
Place of Origin: CHINA
Delivery Time: Subject to actual order quantity and production schedule. Please contact sales for confirmed lead time.
Pricing and Payment: To be negotiated based on order volume, technical customization, and Incoterms.

Technical Support and After-Sales Services:

• Installation Guidance: On-site or remote technical assistance for proper installation and commissioning.

• Fault Diagnosis: Rapid troubleshooting support via remote communication or field visit.

• Maintenance Recommendations: Scheduled maintenance planning to optimize breaker performance and extend operational lifespan.

• Operator Training: Customized training programs for your engineering and maintenance teams.

• Remote Monitoring: Integration support for digital substation monitoring systems.

• On-Site Repair and Replacement: Quick-response repair services and genuine spare parts supply.