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11kV/12kV SF6 Insulated Ring Main Unit With Spring Operating Mechanism
Product Spotlights
Compact 11kV/12kV SF6 gas-insulated Ring Main Unit featuring a reliable spring operating mechanism for consistent, high-speed switching. Offers space-saving design, enhanced safety via sealed construction, low maintenance, and robust performance for secondary distribution networks. Customizable configurations available.
US$ 159
≥1 Unit
Key Specifications
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Application:
Other, Secondary distribution networks
Nominal Voltage:
11kV/12kV
Insulation Medium:
SF6 Gas
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Secondary distribution networks
Nominal Voltage
11kV/12kV
Insulation Medium
SF6 Gas
Operating Mechanism
Spring Operating Mechanism
Configuration
Typically 3 or 4 modules, customizable
Standard/Compliance
Designed to meet IEC 62271 standards
Model Series
RMU-SF6-SPRING series
Brand
Dika Electrical
Function
Circuit protection, isolation, and switching
Dimensions (Typical)
Approx. 800mm width, 1400mm height
As a professional manufacturer of electrical distribution equipment, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our 11kV/12kV SF6 Insulated Ring Main Unit with Spring Operating Mechanism. This unit represents a reliable and efficient solution for modern secondary distribution networks. Engineered with precision and backed by our extensive manufacturing experience, this RMU is designed to deliver superior performance, enhanced safety, and long-term operational stability for utilities and industrial power systems.
Our commitment to quality is reflected in our adherence to rigorous management systems. The core value of this product lies in its combination of the proven insulation properties of SF6 gas with a robust and maintenance-friendly spring operating mechanism, offering a compact, safe, and dependable switching unit for 11kV/12kV applications.
Product Features & Technical Advantages:
- SF6 Gas Insulation: Utilizes sulfur hexafluoride (SF6) gas as the insulation and arc-quenching medium. This provides excellent dielectric strength, allowing for a significantly more compact design compared to air-insulated units. It also ensures reliable performance in various environmental conditions.
- Spring Operating Mechanism: The spring-driven mechanism offers a distinct advantage. It provides a consistent, high-speed operation for switch opening and closing, independent of manual operator force or potential power supply issues. This ensures reliable switching action and enhances safety.
- Compact & Modular Design: The unit features a space-saving, modular construction. This simplifies installation in confined spaces like urban substations or commercial buildings and allows for flexible configuration based on feeder requirements.
- Enhanced Safety & Reliability: The sealed SF6 gas tank minimizes exposure to live parts. The spring mechanism reduces the risk of incomplete or failed operations. Together, they contribute to a safer working environment for personnel and more reliable network operation.
- Low Maintenance Requirements: The sealed gas system and the mechanical spring mechanism are designed for long service life with minimal routine maintenance, reducing operational costs over the unit's lifetime.
- Robust Construction: Built with high-quality materials and components to withstand mechanical stresses and ensure durability in outdoor or indoor installations.
Technical Specifications Overview:
| Parameter | Typical Value / Description |
| Rated Voltage | 11 kV / 12 kV |
| Insulation Medium | SF6 Gas |
| Operating Mechanism Type | Spring Operated (Energy Stored) |
| Number of Feeders (Standard) | 3 or 4, customizable |
| Short-Time Withstand Current | Available in various ratings (e.g., 16kA, 20kA) |
| Main Busbar Rating | 630A, 800A, or as required |
| Design Standard Reference | IEC 62271 series for switchgear |
Benefits for Your Operation:
- Space Optimization: The compact SF6 design allows for installation where space is limited, enabling network expansion or upgrade without requiring large new substation footprints.
- Operational Consistency: The spring mechanism ensures every switching operation is performed with the same speed and force, eliminating variability and potential faults associated with manual or other drive types.
- Reduced Lifetime Costs: Lower maintenance needs and high reliability translate into reduced total cost of ownership over the decades-long service life of the equipment.
- Improved Personnel Safety: The sealed tank and reliable mechanism minimize risks associated with direct exposure and operational failures, protecting maintenance crews.
- Network Reliability: A dependable RMU is a critical node in a distribution network. Our unit's design aims to minimize faults and ensure continuous power supply to downstream customers.
Jinhua Dika Electrical Equipment Co., Ltd. is an established manufacturer with a solid track record in the global market. Our products reach diverse regions including North America, South America, Europe, Asia, Africa, and Oceania, supported by an annual export value in the range of US$1-1.5 Million. This global footprint is built on a foundation of quality management, as evidenced by our implementation of recognized systems like ISO 9001 for quality and ISO 14000 for environmental management. Our team of 11-50 dedicated professionals ensures every unit, like this 11kV/12kV SF6 Insulated Ring Main Unit, is manufactured with attention to detail and performance. We offer flexible shipment from major Chinese ports such as Shanghai, Tianjin, Guangzhou, and Ningbo. Choose Dika for a Ring Main Unit that brings compact design, reliable spring operation, and long-term value to your electrical distribution system.
Frequently Asked Questions (FAQ):
-
Q: What is the primary advantage of using SF6 gas insulation in this RMU?
A: SF6 gas has a much higher dielectric strength than air. This allows the switchgear to be designed in a much more compact and sealed enclosure, saving space and protecting the internal components from environmental contaminants like dust and moisture. -
Q: How does the spring operating mechanism work, and why is it beneficial?
A: The mechanism uses a pre-charged spring to store energy. When activated (often via a simple manual lever or remote signal), the spring releases its energy to drive the switch contacts open or closed at a consistent, high speed. This ensures reliable operation independent of the operator's strength or an external power source. -
Q: Can this RMU be configured for different numbers of outgoing feeders?
A: Yes. While standard configurations often include 3 or 4 feeder modules, the modular design allows for customization. The number and type of modules (e.g., circuit breaker, switch, fuse) can be specified based on your network layout requirements. -
Q: What are the typical maintenance requirements for this unit?
A: Due to its sealed SF6 gas system and mechanical spring mechanism, routine maintenance requirements are low. Periodic inspections may include checking gas pressure indicators, external mechanical components, and cleanliness. Detailed maintenance schedules are provided with the product documentation. -
Q: Is this unit suitable for both indoor and outdoor installation?
A: The sealed construction generally makes it suitable for outdoor installation without additional weather protection. For specific environmental conditions (extreme corrosion, etc.), optional features or enclosures can be discussed. -
Q: What standards does this product comply with?
A: The product is designed and manufactured in accordance with international standards for medium-voltage switchgear, primarily the IEC 62271 series. Specific compliance certifications for target markets can be addressed upon request. -
Q: What is the expected service life of such an RMU?
A: With proper installation and minimal routine maintenance, SF6 insulated switchgear with spring mechanisms is designed for a long operational life, typically exceeding 20-30 years in service. -
Q: How does Dika ensure the quality of its products?
A: As a manufacturer, we operate under a comprehensive quality management framework. Our processes are guided by systematic approaches to ensure consistency, reliability, and performance in every unit we produce.
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1Yr
Business Type
Manufacturer
Annual Export Value
US$1 Million - US$1.5 Million
Total Employees
11 - 50 People
Product Certifications
HACCP, TL900, QS9000, SA8000, ISO9001, ISO9004, ISO17799, ISO9000, ISO14000, ISO10441, ISO16949, TS16969, ISO19011:2000, OHSAS18001, Others
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