Ring Main Units (RMUs)
Shill Engineering Works, a leading manufacturer based in Noida, Uttar Pradesh, offers high-quality Ring Main Units (RMUs) designed for reliable and efficient electrical distribution. Our RMUs are engineered to meet the rigorous demands of modern power systems, providing a robust solution for medium voltage applications. As a trusted System Integrator for Siemens, we ensure that our RMUs comply with the highest industry standards and incorporate advanced technology to guarantee superior performance.
Features
Premium Construction: Built using high-quality materials and advanced components, our RMUs offer exceptional reliability and durability. They are designed to withstand harsh environmental conditions and provide long-term service.
Compact Design: Our RMUs feature a compact and space-efficient design, making them suitable for various installation environments, including urban and industrial settings.
Safety: Equipped with advanced safety features, including internal arc fault protection and robust insulating materials to ensure safe operation. Panels are fully type tested to adhere to stringent safety standards.
Maintenance: Designed for easy maintenance, with features such as accessible compartments and simple operational procedures. No special maintenance equipment is required.
Modularity: RMUs offer flexible configurations, including the ability to add or replace components without disrupting the entire system, ensuring ease of customization and upgrade.
Standards Compliance: Adheres to international standards, including IEC 60298, ensuring reliability and performance in line with global benchmarks.
Specifications
Voltage Ratings: Available in various voltage ratings, typically from 6KV to 36KV, to suit different operational requirements.
Current Ratings: Ranges from 630A to 2500A, accommodating a wide range of load demands.
Short Circuit Ratings: Capable of withstanding short circuit currents from 12kA to 31.5kA, depending on the configuration.
Protection Type: Includes advanced protection features such as vacuum circuit breakers (VCB) or SF6 insulated switchgear for enhanced safety.
Technical Data
Rated Voltage: Typically available in 11kV, 22kV, and 33kV configurations.
Rated Frequency: 50 Hz.
Rated Insulation Level: Includes a rated lightning impulse withstand voltage of up to 75 kV and a power frequency withstand voltage of up to 28 kV.
Rated Short-Time Withstand Current (3s): Ranges from 12kA to 31.5kA, depending on the model.
Rated Peak Withstand Current: Up to 66 kAp.
Operational Mechanism: Manual or motorized operation options available for ease of use.
Enclosure Type: Metal-enclosed, ensuring high resistance to environmental factors and physical impacts.
Protection Class: Typically IP2X or higher, offering protection against ingress of solid objects and moisture.
Type: Single busbar air-insulated metal-clad switchgear.
Circuit Breaker: Mounted on a withdrawable truck.
Mechanism: Includes a rugged shutter mechanism and encapsulated feeder connections.
Operation: All switching operations are performed with the breaker compartment door closed.
Protection: Features earthed metallic partitions and shutters to prevent contact with live parts. Each high-voltage compartment is tested for internal arc fault.
Enclosure: Full metallic enclosure ensures high resistance to ingress and interference under all operating conditions.
