Brass Screw Thread High Voltage Switchgears Featuring Local Control and Power Distribution for Electrical Network Management

Product Description:

Technical Parameters:

The equipment supports a range of rated voltages including 12kV, 24kV, and 36kV, which correspond to 10kV, 20kV, and 35kV distribution network systems respectively. It is designed to operate at rated frequencies of 50Hz or 60Hz, making it compatible with the predominant global power grid standards.

The rated current options available are 630A and 1250A, where 630A is the standard configuration intended for long-term operation of the main circuit. Additionally, the equipment can endure rated short-time withstand currents of 16kA, 20kA, 25kA, or 31.5kA for 3 seconds as per national standards.

The rated peak withstand current ranges from 40kA to 80kA, which is approximately 2.5 times the rated short-time withstand current, ensuring robust performance under peak conditions. Furthermore, the insulation levels include power frequency withstand voltage at 42kV for the 12kV class and a lightning impulse withstand voltage of 75kV for the same class, with the ratings increasing progressively according to the voltage class.

Protection classes are defined as IP4X for the cabinet shell, providing dust protection, and IP67 for the switch components, which qualifies them for outdoor immersion environments. The ground switch is rated for a short-time current of 2000A, fulfilling earthing requirements during short-circuit faults.

For operation, both manual and electric mechanisms are available. The electric option supports remote control functionality and can be enhanced with an optional energy storage motor. Fuse configuration is compatible with XRNT type high breaking capacity fuses, covering rated currents from 6.3A to 400A, primarily intended for transformer protection.

The equipment is designed to function under diverse environmental conditions, including operating temperatures from -25℃ to +40℃, altitude up to 1000 meters (with customization available for higher altitudes), and humidity levels up to 95% without condensation. Specialized versions with high-altitude and anti-corrosion features are also provided to accommodate unique environments.

The cabinet materials consist of cold-rolled steel plates with plastic spraying as standard, with the option of stainless steel (304 or 316 grades) for applications in coastal or chemically corrosive environments. The primary circuit schemes are customizable, supporting configurations such as 2-in-2-out, 3-in-3-out, and terminal types to fit various distribution network topologies.

Optional secondary control devices include intelligent measurement and control units, temperature and humidity controllers, and fault indicators. These features facilitate integration with SCADA systems to enable remote monitoring and management.

Applications:

The TNNPI High Voltage Switchgears, originating from Henan, China, are engineered to meet the stringent demands of modern electrical distribution and control systems. Certified by CE and ISO, these switchgears ensure high reliability and safety standards, making them ideal for a wide range of application occasions and scenarios. With a minimum order quantity of just one unit, these products are accessible for both small-scale projects and large industrial deployments.

One of the primary application occasions for TNNPI High Voltage Switchgears is in indoor environments where space optimization and operational safety are crucial. The Indoor HV Switchgear is designed to provide efficient power distribution within commercial buildings, industrial plants, and utility substations. Its compact design, combined with robust air, SF6 gas, or vacuum insulation types, guarantees safe operation under high voltage conditions, with a breaking capacity of up to 50kA to handle fault currents effectively.

In urban and industrial areas where environmental factors and space constraints are significant, the Gas-Insulated RMU (Ring Main Unit) variation of TNNPI’s high voltage switchgears excels. This gas-insulated switchgear minimizes the footprint while ensuring excellent insulation and durability. It is particularly suitable for secondary distribution networks, offering reliable remote control and local control options to enhance operational flexibility and safety.

The Mining HV Distribution Cabinet is another critical application scenario for TNNPI High Voltage Switchgears. Mining operations require robust and reliable electrical distribution systems capable of withstanding harsh conditions and providing uninterrupted power supply. TNNPI’s switchgears, equipped with brass screw threads for secure connections and packaged in sturdy wooden boxes for protection during transport, deliver optimal performance in such demanding environments. The delivery time of 1-2 weeks ensures timely deployment for urgent mining projects.

Overall, TNNPI High Voltage Switchgears are highly versatile and suitable for various application occasions including indoor electrical rooms, urban distribution networks, and demanding mining sites. Their advanced insulation technologies, high breaking capacity, and flexible control types make them indispensable components in ensuring safe, efficient, and reliable high voltage power distribution across multiple industries.

Customization:

At TNNPI, we offer comprehensive product customization services for our High Voltage Switchgears, ensuring each unit meets your specific operational requirements. Manufactured in Henan, China, our switchgears come with CE and ISO certifications, guaranteeing top quality and reliability.

Our product range includes Fixed Type HV Switchgear, Unattended RMU, and Ring Network Switching Stations, all designed to operate efficiently within a frequency of 50Hz or 60Hz. With a breaking capacity of up to 50kA, these switchgears are suitable for both indoor and outdoor mounting types.

We provide protection classes ranging from IP3X to IP67, allowing you to select the level of protection that best suits your environment. Our switchgears are engineered to operate within a temperature range of -25°C to +55°C, ensuring performance stability under various climatic conditions.

Each unit is carefully packaged in a sturdy wooden box to ensure safe delivery. We accept a minimum order quantity of just one unit, with a delivery time of 1 to 2 weeks, facilitating prompt supply for your projects.