HGGN-12 Medium Voltage Ring Main Unit – Compact SF6 Gas-Insulated RMU

Introduction

The HGGN-12 medium voltage ring main unit is engineered for safe, compact, and efficient power distribution in modern urban grids and renewable energy systems. With a sealed SF6-insulated enclosure and flexible modular design, it is widely used in secondary distribution networks such as compact substations, wind farms, and city buildings.

Product Overview

HGGN-12 is a fully enclosed, SF6-insulated, metal-clad switchgear designed for three-phase AC 50Hz, rated voltage 12kV systems. It enables ring network or terminal power supply, offering protection and sectionalizing for medium-voltage circuits. The system can be configured with load break switches, vacuum circuit breakers, and fuse combinations as needed.

Key Features

• Fully sealed and insulated: Ensures personnel safety and environmental protection

• Modular & customizable: Flexible combinations (LBS, VCB, fuse modules)

• Maintenance-free design: Suitable for underground or compact spaces

• Long service life: Rust-proof, weather-resistant stainless steel housing

• Smart grid compatibility: Supports remote monitoring and fault location

Technical Parameters

• Rated Voltage: 12kV

• Rated Frequency: 50Hz

• Rated Current: 630A

• Rated Short-Circuit Breaking Current: 20kA

• Insulation Medium: SF6 Gas

• Protection Level: IP67 (main tank)

• Installation Type: Indoor / Outdoor RMU

Application Scenarios

• Compact substations in urban areas

• Renewable energy systems (wind/solar)

• Commercial and residential buildings

• Industrial parks and mining substations

• Rail transit and data center networks

Standards & Certifications

• IEC 62271-200: Metal-enclosed switchgear

• GB/T 3906: 3–63kV AC switchgear standards

• ISO 9001, ISO 14001, ISO 45001

• Type test reports are available from certified labs

Installation & Maintenance

• Delivered fully assembled or in modules

• No need for SF6 gas refilling for 20+ years

• Operated via front-panel handle or electric actuator

• Optional SCADA integration for smart diagnostics

Customer Feedback

⭐⭐⭐⭐⭐
“Perfect fit for our 12kV solar substation project in Germany. Compact, reliable, and easy to install.”
— Markus T., Siemens Energy Contractor (Google Reviews)

⭐⭐⭐⭐⭐
“The HGGN-12 unit helped us solve space constraints in a commercial tower in the UK. Excellent after-sales support.”
— Emily S., GridPower Solutions Ltd. (Trustpilot UK)

⭐⭐⭐⭐⭐
“Reliable under harsh conditions. Used in an outdoor wind energy site in Canada with no failures in 2 years.”
— Jordan M., NovaGrid Power Systems (Google Reviews)

⭐⭐⭐⭐☆
“Would appreciate faster lead times, but performance is excellent. Good thermal isolation and minimal maintenance.”
— Carlos R., Iberica Electric (Spain)

⭐⭐⭐⭐⭐
“Clear documentation, strong design. It simplified our distribution layout across a new industrial park in Poland.”
— Anna W., Elektrobud Sp. z o.o. (Email Feedback)

Frequently Asked Questions (FAQ)

• What’s the main advantage of HGGN-12 over traditional RMUs?
It offers a more compact footprint, is fully insulated with SF6 gas, and is maintenance-free for over 20 years.

• Can it be installed outdoors?
Yes, with IP67 protection and stainless steel housing, it’s suitable for harsh outdoor conditions.

• Is this RMU compatible with automation systems?
Yes, HGGN-12 supports SCADA integration, remote monitoring, and fault indication.

• What’s the typical delivery lead time?
4–6 weeks, depending on configuration. Urgent orders can be expedited.

• Does it include a load break switch and circuit breaker?
Configurations vary. It can be customized with LBS, VCB, or fuse combinations based on your needs.

Contact Our Engineer

For detailed specifications, datasheets, or quotation requests, please contact:

Thor – Electrical Engineer at Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

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