XGN66-12 gredzena galvenā vienība

Introduction to XGN66-12 Ring Main Unit

In the evolving landscape of medium-voltage power distribution, Ring Main Units (RMUs) continue to play a crucial role by ensuring reliability, safety, and operational flexibility. The XGN66-12 gredzena galvenā vienība is a high-performance, metal-enclosed air-insulated sadales iekārta designed for medium-voltage networks up to 12kV. Combining compactness, modularity, and superior operational safety, XGN66-12 offers outstanding solutions for modern energy systems.

Applications of XGN66-12 RMU

The XGN66-12 RMU is widely utilized in:

• Urban and rural distribution networks
• Industrial manufacturing facilities
• Commercial buildings and shopping malls
• Transportation infrastructure (airports, railway systems)
• Renewable energy projects (solar, wind, hydropower plants)

Its versatility and resilience make it particularly valuable in environments where stability and uninterrupted power supply are paramount.

Market Trends and Background

With the continuous expansion of urbanization and the growing need for decentralized energy systems, RMUs are becoming essential in modern grid architecture. According to IEEE and IEEMA reports, RMUs contribute significantly to enhancing the reliability and automation of secondary distribution networks (source).

Driven by the integration of smart grid technologies and increasing emphasis on sustainable energy, the market for compact, efficient switchgear like XGN66-12 continues to expand.

Technical Specifications of XGN66-12

Ring Main Unit Parameters

No.	Item	Unit	Technical Data
1	Rated voltage	kV	3.6 / 7.2 / 12
2	Rated current	A	630 / 1000 / 1250 / 2000 / 2500 / 3150
3	Rated short-circuit breaking current	kA	20 / 31.5 / 40
4	Rated short-time withstand current	kA	20 / 31.5 / 40
5	Rated peak withstand current	kA	50 / 80 / 100
6	Rated short-circuit making current	kA	50 / 80 / 100
7	Duration of short circuit	s	4
8	Degree of protection	—	IP2X
9	Bus system	—	Single bus, single bus with bypass, double bus
10	Operating method	—	Electromagnetic / Spring mechanism
11	Dimensions (W×D×H)	mm	950–1000 × 1000 × 2300 (for ≤1250A), 1000×1000×2300 (for >1250A)

Electrical Characteristics & Ratings

Parameter	Unit	Value
Rated Working Voltage	V	AC400–AC690
Rated Frequency	Hz	50 (60 optional)
Rated Insulation Voltage	V	660–800
1 min Power Frequency Voltage	kV	2500–3000
Control Motor Power	kW	0–155
Rated Short-Time Withstand Current	kA	15 / 30 / 50
Rated Peak Withstand Current	kA	30 / 63 / 105
Degree of Protection	—	IP30

Key Features and Benefits

• Flexible Busbar Configurations: Supports single bus, bypass bus, and double bus systems.
• High Short-Circuit Capability: Rated for short-circuit breaking currents up to 40kA.
• Compact Design: Minimal footprint without compromising performance.
• Versatile Operating Mechanisms: Electromagnetic and spring-operated options.
• Durable Protection: IP2X enclosure ensures personnel and system safety.
• Ease of Integration: Designed for compatibility with SCADA and smart grid networks.

Comparison with Other Switchgear Types

Feature	XGN66-12 RMU	XGN2-12 RMU	GIS Systems
Insulation Medium	Air	Air	SF₆ Gas
Application Level	Secondary Distribution	Secondary Distribution	Primary / Secondary
Size	Compact	Compact	Very Compact
Maintenance Needs	Low	Moderate	Very Low
Typical Use	Urban grids, Industrial	Urban grids, Industrial	Space-constrained critical systems

Selection and Purchase Guidance

When selecting the XGN66-12 Ring Main Unit, consider the following:

• Voltage and Current Requirements
• Grid Configuration Needs (single/double bus)
• Short-circuit withstand capacity based on network protection requirements
• Installation Space Constraints
• Automation and Remote Monitoring Capabilities

Consulting with expert manufacturers like PINEELE ensures that the selected switchgear configuration aligns with both technical specifications and project-specific needs.

Frequently Asked Questions (FAQ)

Through advanced engineering, robust design, and a focus on operational safety and efficiency, PINEELE’s XGN66-12 Ring Main Unit delivers exceptional value and performance for medium-voltage power distribution networks.