SF6 Gas Gas Insulated RMU Offering Operating Temperature Range 25°C To 55°C and Durable Medium Voltage Switchgear Equipment

Product Description:

Technical Parameters:

The equipment is designed to operate at rated voltages of 12kV, 24kV, and 36kV, which correspond to the 10kV, 20kV, and 35kV levels typically found in distribution network systems. It supports rated frequencies of 50Hz and 60Hz, ensuring compatibility with the primary power grid frequencies used worldwide.

The rated current for the main circuit is available in two configurations: 630A, which is the standard setup, and 1250A for higher load requirements. The device can endure short-time withstand currents (Icw) ranging from 16kA up to 31.5kA for durations of 3 seconds, adhering to national standards. Moreover, the rated peak withstand current (Ip) reaches between 40kA and 80kA, approximately 2.5 times the short-time withstand current, indicating robust fault tolerance.

Regarding insulation performance, the equipment exhibits a power frequency withstand voltage of 42kV for the 12kV class, lasting one minute, alongside a lightning impulse withstand voltage of 75kV at the same voltage class. These values scale progressively with higher voltage classes to match specific requirements.

The protection rating is specified as IP4X for the cabinet shell, guaranteeing dust protection, while components within the switch assembly achieve an IP67 rating, making them suitable for outdoor environments where immersion may occur. The earthing switch is rated to handle short-time currents up to 2000A, fulfilling safety standards during short-circuit fault conditions.

The operating mechanism can be manual or electric. The electric option supports remote control capabilities and can be equipped with an energy storage motor for enhanced operational efficiency. In terms of fuse configuration, the device is compatible with XRNT type high breaking capacity fuses, covering rated currents from 6.3A to 400A, mainly utilized for transformer protection.

Environmental adaptability includes an operational temperature range from -25°C to +40°C and an altitude rating of up to 1000 meters, with customization available for ultra-high altitude applications. The relative humidity tolerance reaches up to 95% without condensation, and special models with enhanced anti-corrosion properties can be supplied to withstand challenging environmental conditions.

The cabinet material options include cold-rolled steel plates with plastic spraying for general protection and stainless steel variants (304 or 316 grades) particularly suited for coastal areas or chemical corrosion environments. The primary circuit scheme is flexible and customizable, offering configurations such as 2-in-2-out, 3-in-3-out, terminal types, among others, to align with various distribution network topologies.

Finally, optional secondary control features include intelligent measurement and control units, temperature and humidity controllers, and fault indicators. These components enable integration with SCADA systems, facilitating remote monitoring and management of the equipment.

Applications:

The TNNPI High Voltage Switchgears, manufactured in Henan, China, are engineered to meet the rigorous demands of modern power distribution and industrial applications. Certified to CE and ISO standards and compliant with IEC 62271 and ANSI C37 standards, these switchgears guarantee reliability and safety in various high-voltage scenarios. Their robust design supports a current rating of up to 4000A and a breaking capacity of up to 50kA, making them ideal for both routine and critical power management tasks.

One of the primary application occasions for TNNPI High Voltage Switchgears is in power distribution networks across utilities and industrial plants. The metal-clad HV switchgear design ensures superior protection and ease of maintenance, suitable for indoor or outdoor mounting types. This flexibility allows them to be installed in diverse environments, from compact indoor electrical rooms to outdoor substations exposed to harsh weather conditions, providing consistent performance and operational safety.

Another significant scenario for these switchgears is within Ring Main Units (RMU), where they play a crucial role in maintaining uninterrupted power supply through reliable switching and fault isolation. The TNNPI RMUs, including the unattended RMU models, are particularly advantageous in remote or unmanned substations, reducing the need for frequent manual interventions and enhancing operational efficiency. Their compact and modular design allows for seamless integration into existing power networks, facilitating quick fault detection and restoration.

Industrial plants benefit greatly from the application of TNNPI High Voltage Switchgears in managing high power loads and ensuring stable electrical distribution. The ability to handle high breaking capacities up to 50kA means these switchgears can safely interrupt fault currents, protecting sensitive equipment and minimizing downtime. Their packaging in sturdy wooden boxes ensures safe delivery within 1-2 weeks, even for minimum order quantities as low as one unit, making them accessible for various project scales.

In summary, TNNPI High Voltage Switchgears are indispensable in scenarios requiring robust, reliable, and certified high-voltage switching solutions. Whether in metal-clad HV switchgear configurations, Ring Main Unit setups, or unattended RMU installations, they provide exceptional performance for power distribution, industrial plants, and utility applications, ensuring safety, efficiency, and durability in demanding electrical environments.

Customization:

TNNPI offers customized High Voltage Switchgears designed to meet the diverse needs of power distribution, industrial plants, and utilities. Our products, originating from Henan, China, are certified with CE and ISO standards to ensure quality and reliability.

We specialize in Mining HV Distribution Cabinets, Gas-Insulated RMUs, and Switching Stations, all compliant with IEC 62271 and ANSI C37 standards. Our switchgears operate efficiently at frequencies of 50Hz or 60Hz and feature protection classes ranging from IP3X to IP67, ensuring optimal safety and durability in various environments.

Customers can choose from different arc extinguishing mediums including SF6 Gas, Vacuum, and Air Blast to suit their specific operational requirements. We accommodate orders starting from a minimum quantity of 1 unit, with secure packaging in wooden boxes to guarantee safe delivery.

Our delivery time is typically between 1 to 2 weeks, allowing for prompt deployment of customized solutions. Trust TNNPI for high-quality, reliable High Voltage Switchgear products tailored to your application needs.