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Home > Electrical & Electronics > Passive Components > Capacitor > SF6 Ring Main Unit for Wind Farm Grid Connection, 33kV/40.5kV Protection

SF6 Ring Main Unit for Wind Farm Grid Connection, 33kV/40.5kV Protection

SF6 Ring Main Unit for Wind Farm Grid Connection, 33kV/40.5kV Protection thumbnail-3

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SF6 Ring Main Unit for Wind Farm Grid Connection, 33kV/40.5kV Protection photo-4

SF6 Ring Main Unit for Wind Farm Grid Connection, 33kV/40.5kV Protection photo-5

Product Spotlights

A compact, sealed SF6 gas-insulated Ring Main Unit designed specifically for reliable 33kV/40.5kV grid connection and protection in wind farms. Offers maintenance-free operation, high environmental resistance, enhanced safety, and flexible configurations to ensure stable power integration and reduced lifetime costs for renewable energy projects.

US$ 159 ≥1 Unit

Key Specifications

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Application:

Other, Wind Farm Grid Connection & Protection

Rated Voltage:

33kV / 40.5kV

Insulation Medium:

SF6 Gas

Contact Supplier Request Quote Chat Now

Jinhua Dika Electrical Equipment Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Application Other, Wind Farm Grid Connection & Protection

Rated Voltage 33kV / 40.5kV

Insulation Medium SF6 Gas

Configuration Ring Main Unit (RMU)

Interrupting Medium SF6 Gas

Operating Mechanism Spring Operated / Motor Operated (Optional)

Enclosure Material Stainless Steel or Powder Coated Steel

Standards Compliance IEC 62271-1, IEC 62271-100, IEC 62271-102

Busbar System Single Busbar or Double Busbar (Optional)

Protection Integration Compatible with Standard Protection Relays

As a dedicated manufacturer of medium voltage electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. leverages its expertise to provide robust solutions for demanding renewable energy applications. Our SF6 Ring Main Unit (RMU) is engineered specifically for the critical task of wind farm grid connection at 33kV and 40.5kV levels. This product represents a reliable and compact switching and protection node, designed to ensure the safe and efficient integration of wind power into the main electrical grid, safeguarding both the generation assets and the network integrity.

The core value of this RMU lies in its combination of high performance, maintenance-free operation, and adaptability to harsh environmental conditions often encountered at wind farm sites. Utilizing SF6 gas for insulation and interruption offers significant advantages in space savings, safety, and long-term reliability, making it a preferred choice for modern wind energy projects.

Key Features & Technical Advantages:

Optimized for Renewable Integration: Specifically designed to handle the unique characteristics of wind power, including potential load fluctuations and fault current contributions.
SF6 Gas Technology: Provides excellent dielectric strength and arc-quenching capabilities in a sealed, maintenance-free system, ensuring long service life and reduced operational costs.
Compact & Modular Design: The ring main unit configuration allows for a space-efficient footprint, which is crucial for often space-constrained substation layouts in wind farms.
High Reliability & Safety: The sealed tank design prevents internal components from environmental contamination (dust, moisture, salt), enhancing operational safety and reliability.
Flexible Configuration: Can be supplied with various switching combinations (load-break switches, circuit breakers, earthing switches) and busbar arrangements to match specific project requirements.
Easy Installation & Connection: Pre-assembled and tested units simplify on-site installation, reducing project timelines and labor costs.

Technical Specifications Overview:

Parameter	Specification
Rated Voltage (Ur)	33 kV / 40.5 kV
Rated Frequency	50 Hz / 60 Hz
Rated Normal Current (Ir)	630A, 1250A (Customizable)
Rated Short-Time Withstand Current (Ik)	25 kA / 3s (Typical, customizable)
Rated Lightning Impulse Withstand Voltage (Up)	170 kV / 185 kV
Insulation Medium	SF6 Gas
Operating Mechanism	Spring-operated (Standard), Motor-operated (Optional)
Degree of Protection (Enclosure)	IP3X, IP4X (Higher available upon request)
Ambient Temperature Range	-25°C to +40°C (Extended range customizable)

Benefits for Your Wind Farm Project:

Enhanced Grid Stability: Provides reliable fault isolation and supply restoration, minimizing downtime for wind turbines and maintaining grid code compliance.
Reduced Lifetime Costs: The maintenance-free SF6 system significantly lowers the total cost of ownership compared to air-insulated alternatives.
Improved Safety: Live parts are fully enclosed, protecting personnel and eliminating risks associated with exposed conductors.
Weather Resistance: The sealed construction is highly resistant to corrosive coastal or desert environments common near wind farms.
Scalability: The modular RMU design allows for easy future expansion of the wind farm collection grid.

Trust in Jinhua Dika's manufacturing capability is built on a foundation of ISO 9001 quality management and a commitment to international standards. With an annual export value reflecting consistent global demand and a presence across diverse markets from North America and Europe to Southeast Asia and Africa, our products are proven in the field. Our ability to ship from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo ensures efficient and flexible logistics for your project timeline. Choose our SF6 Ring Main Unit to secure a robust, reliable, and cost-effective grid connection solution for your wind energy investment. Contact us today for detailed technical documentation, project-specific configuration support, and a competitive quotation.

Frequently Asked Questions (FAQ)

Q: Why is an SF6 RMU recommended for wind farm applications over air-insulated switchgear?
A: SF6 RMUs offer a sealed, compact design that is immune to environmental contaminants like salt spray, dust, and humidity, which are prevalent in many wind farm locations. This leads to higher reliability, lower maintenance, and a smaller footprint.
Q: What is the typical maintenance schedule for this SF6 Ring Main Unit?
A: The primary advantage is its minimal maintenance requirement. The sealed SF6 gas compartment typically requires no regular maintenance. Routine checks are limited to external mechanisms, indicators, and secondary connections as per the manufacturer's instructions.
Q: Can this unit be integrated with digital protection and control systems (SCADA)?
A: Yes. The RMU can be equipped with optional intelligent electronic devices (IEDs), sensors, and motorized actuators for remote operation, monitoring, and integration into a wind farm SCADA system.
Q: Are different busbar configurations available?
A: Absolutely. We offer flexibility in configurations, including single busbar or double busbar systems, and various feeder combinations (incoming, outgoing, metering) to suit your specific ring main or radial network design.
Q: What standards does this product comply with?
A> The unit is designed and tested in accordance with relevant IEC standards, such as IEC 62271-1, -100, and -102 for high-voltage switchgear and controlgear. Specific certifications can be discussed based on project requirements.
Q: How does the unit handle fault currents from the wind farm?
A> It is rated with a specific short-time withstand current (Ik) and short-circuit making capacity. Proper coordination with the wind farm's fault level studies is essential, and we can customize the ratings accordingly.
Q: What is the delivery lead time for a standard configuration?
A> Lead times vary based on order complexity and current production schedule. Generally, for standard configurations, it ranges from 8 to 12 weeks. We provide accurate timelines upon receipt of detailed specifications.
Q: Do you provide technical support for installation and commissioning?
A> Yes, we offer comprehensive support, including detailed installation manuals, drawings, and can provide on-site supervision or commissioning services upon request to ensure correct installation and operation.