Operating temperature range minus 25 degrees Celsius to plus 55 degrees Celsius Ring Main Unit RMU featuring air insulation type for power network management

Product Description:

Technical Parameters:

The rated voltage options available are 12kV, 24kV, and 36kV, which correspond respectively to the 10kV, 20kV, and 35kV distribution network systems. These voltage ratings are designed to suit various network configurations effectively.

The system supports rated frequencies of 50Hz and 60Hz, making it compatible with the predominant power grid frequencies used worldwide. This ensures flexibility for global applications.

The rated current capacities are 630A and 1250A. The main circuit is capable of long-term operation at these current levels, with 630A usually provided as the standard configuration. This provides options to meet different load requirements.

Regarding short-time withstand currents, the system can handle 16kA, 20kA, 25kA, or 31.5kA for a duration of 3 seconds, in compliance with national standards. The peak withstand current ratings are 40kA, 50kA, 63kA, and 80kA, which are 2.5 times the rated short-time withstand currents, offering robust protection against short-circuit events.

The rated insulation levels include a power frequency withstand voltage of 42kV (applicable to the 12kV class) for 1 minute and a lightning impulse withstand voltage of 75kV (also for the 12kV class). These insulation indices increase proportionally with the voltage class to ensure safety and reliability.

The protection class is IP4X for the cabinet shell, providing dust-proofing, and IP67 for switch components, which makes them suitable for outdoor environments that may involve immersion scenarios.

The earthing switch is rated for a short-time current of 2000A, fulfilling earthing requirements during short-circuit faults and enhancing system safety.

Operation mechanisms include manual and electric operation modes. The electric operation supports remote control capabilities, while an energy storage motor is available as an optional feature for improved performance.

The fuse configuration is compatible with XRNT type high breaking capacity fuses with rated currents ranging from 6.3A to 400A, primarily used for transformer protection.

Environmental conditions for operation specify a temperature range from -25℃ to +40℃, an altitude limit of 1000 meters (with customization available for ultra-high altitudes), and humidity up to 95% without condensation. There are also customizable models designed for high-altitude and anti-corrosion requirements to adapt to special environments.

The cabinet material options include cold-rolled steel plates with plastic spraying or stainless steel types 304 or 316. Stainless steel versions are especially suitable for corrosive environments such as coastal areas or chemical exposure.

The primary circuit schemes are flexible and customizable, including configurations such as 2-in-2-out, 3-in-3-out, and terminal types, adapting to various distribution network topologies.

For secondary control, optional intelligent measurement and control units are available, along with temperature and humidity controllers and fault indicators. These support remote monitoring through SCADA systems, enabling enhanced operational management.

Applications:

The TNNPI High Voltage Switchgears, manufactured in Henan, China, are designed to meet the demanding requirements of modern power distribution systems. Certified with CE and ISO standards, these switchgears ensure reliable and safe operation in various industrial and utility applications. With a minimum order quantity of just one unit and a delivery time of 1-2 weeks, TNNPI offers flexibility and prompt service to meet urgent project needs.

These Industrial HV Switchgears are suitable for both indoor and outdoor mounting types, making them versatile for different installation environments. They operate efficiently within a temperature range of -25°C to +55°C, ensuring stable performance under diverse climatic conditions. The product's robust breaking capacity of up to 50kA guarantees secure interruption of electrical faults, protecting equipment and personnel alike.

Fixed Type HV Switchgear from TNNPI is widely used in power distribution networks, industrial plants, and utilities. They play a crucial role in controlling, protecting, and isolating electrical equipment, thus enhancing the reliability and safety of power systems. Their design accommodates the needs of heavy-duty industrial operations, ensuring continuous and uninterrupted power supply in critical environments.

Moreover, the Intelligent RMU (Ring Main Unit) integrated in these high voltage switchgears adds advanced automation and monitoring capabilities. This intelligent feature allows for remote control and real-time diagnostics, reducing downtime and maintenance costs. It is particularly beneficial for utility companies and large industrial complexes that require efficient and smart power management solutions.

Packaging is handled with care, using sturdy wooden boxes to protect the switchgears during transportation. This ensures that the equipment arrives in perfect condition, ready for installation and commissioning. Overall, TNNPI High Voltage Switchgears combine quality, reliability, and advanced technology, making them an ideal choice for various high voltage power distribution applications.

Customization:

TNNPI offers comprehensive product customization services for High Voltage Switchgears, ensuring each unit meets your specific operational requirements. Our Mining HV Distribution Cabinet and Air-Insulated RMU can be tailored to comply with international standards such as IEC 62271 and ANSI C37, guaranteeing reliable and safe performance.

Manufactured in Henan, China, our HV Switchgear products come with CE and ISO certifications, reflecting our commitment to quality and safety. Customers can choose from a variety of operating mechanisms including manual, motorized, and pneumatic options to suit different applications.

We provide customization of protection classes ranging from IP3X to IP67 to ensure optimal durability in diverse environments. Our switchgears operate efficiently at frequencies of 50Hz or 60Hz and offer breaking capacities up to 50kA, suitable for demanding industrial conditions.

With a minimum order quantity of just one unit, TNNPI accommodates both small and large scale projects. All products are securely packaged in wooden boxes to ensure safe delivery within 1-2 weeks. Trust TNNPI for tailored High Voltage Switchgear solutions that enhance the safety and efficiency of your electrical distribution systems.