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HV Ring Main Unit | XGN86-12 Gas-insulated Metal-enclosed Ring Main Switchgear

HV Ring Main Unit | XGN86-12 Gas-insulated Metal-enclosed Ring Main Switchgear is a 12kV indoor gas-insulated ring main unit designed for ring main and radial power distribution in urban distribution networks, industrial parks, residential communities, commercial buildings, prefabricated substations and small substations. The primary switching devices are sealed in a gas-insulated enclosure, so the live parts are isolated from dust, humidity and pollution. The unit is compact, extensible and maintenance-light, with a front mimic-diagram panel for safe operation. It suits space-limited indoor switch rooms, prefabricated substations and harsh-environment sites where conventional air-insulated ring main units are not ideal.

Industry Approvals：
GB 3906
DL/T 404


Availability:



Inquire

Model:
XGN86-12

Parameter	HV Ring Main Unit
Common Models	XGN86-12, SRM16, SF6-630, Solid Insulated RMU
Construction	Metal-enclosed structure with primary switching devices sealed in a gas-insulated tank; cable compartment separated from the switching compartment. Extensible modular design; functional units can be added or combined on site according to the single-line diagram.
Core Function & Performance	Receives and distributes 12 kV power in ring main or radial networks; the load break switch (with or without fuses) switches and protects distribution circuits and transformers, with mechanical interlocks between switch, earthing switch and doors for operator safety.
Technical Specs & Ratings	• Rated Voltage: 12 kV • Standards: GB 3906, DL/T 404 • Main switching device: Load break switch or load break switch-fuse combination sealed in gas-insulated enclosure • Rated current, breaking capacity and dimensions: configured according to project requirements, please contact us.
Typical Application Scenarios	Ring main and radial power distribution in urban distribution networks, industrial parks, residential communities, commercial buildings, prefabricated substations and small substations.

*Data provided on this page is subject to change based on different manufacturers' variances.

Customization Service

We provide flexible customization services, including cabinet function scheme, voltage class, load break switch, fuse, earthing switch and protection configuration, and cabinet color. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is XGN86-12?
A	XGN86-12 Gas-insulated Metal-enclosed Ring Main Switchgear is a 12 kV indoor gas-insulated ring main unit. The primary switching devices are sealed in a gas-insulated enclosure, so the live parts are isolated from dust, humidity and pollution. The unit is compact, extensible and maintenance-light, with a front mimic-diagram panel for safe operation.
Q	Which standards does the switchgear comply with?
A	The switchgear is designed and manufactured in accordance with GB 3906 and DL/T 404.
Q	What functional units are available?
A	Typical units include incoming / outgoing load break switch units, load break switch-fuse combination units for transformer protection, metering units and PT units, which can be combined according to your single-line diagram.
Q	What is the advantage of gas insulation over air insulation?
A	In a gas-insulated unit the live switching parts are sealed in an enclosure, so they are unaffected by dust, humidity, salt fog or condensation. This allows a smaller cabinet, longer maintenance intervals and stable performance in harsh environments.
Q	Are mechanical interlocks provided?
A	Yes. Mechanical interlocks between the load break switch, earthing switch and cabinet doors are provided to prevent misoperation and protect operators during switching and maintenance.
Q	Where is this switchgear typically used?
A	It is used for receiving and distributing 12 kV power in ring main or radial networks of urban distribution, industrial parks, residential communities, commercial buildings and prefabricated substations, especially where space is limited or the ambient environment is humid, dusty or polluted.
Q	What information do you need for a quotation?
A	Please send us your single-line diagram or project specifications, including voltage class, rated current, number and function of units, fuse or protection requirements, and we will prepare a configuration and quotation.
Q	Do you supply complementary products?
A	Yes. In addition to high and low voltage switchgear, we supply power cables, cable accessories, electric power fittings and transformers for complete project packages.