SF6-Free Switchgear / Ring Main Unit for Urban Distribution Networks-12kV

Name: SF6-Free Switchgear / Ring Main Unit for Urban Distribution Networks-12kV
Brand: Wenzhou Rockwill Electric Co., Ltd.
SKU: 1867
Price: 5600.00 USD
Availability: InStock

Wenzhou Rockwill Electric Co., Ltd.

17yrs 700++ staff 108000+m² US$150000000+ China

Attributes Description Documentation Resource Library Supplier

Key attributes

Brand	ROCKWILL
Model NO.	SF6-Free Switchgear / Ring Main Unit for Urban Distribution Networks-12kV
Rated voltage	12kV
Rated frequency	50/60Hz
Series	XGN

Description

This sealed air-insulated ring main unit enables dual-circuit distribution with SF₆-free technology. Air at atmospheric pressure in a sealed enclosure delivers reliable insulation without gas monitoring or leakage risk. The dual-circuit configuration supports independent loop supply with automatic fault isolation.

Integrated load break and earthing switches provide safe switching and visible isolation for urban substations, industrial parks, and commercial complexes.

Key Features

SF₆-Free Eco Design:Clean air at normal pressure as insulating medium. Zero GWP, no gas monitoring, no leakage risk.
Fully Sealed Enclosure:Hermetically sealed stainless steel tank, protection IP67, prevents moisture/dust/vermin ingress.
Dual-Circuit Redundancy:Two independent load break switches for dual-loop supply with automatic fault isolation and self-healing restoration.
Maintenance-Free Operation:No gas refilling, no periodic cleaning, mechanical endurance ≥5000 operations.

Parameters

Name		Unit	Parameter Value
Rated Voltage (Ur)		kV	12
Rated Frequency (fr)		Hz	50/60
Rated Current (Ir)		A	630
Short - time Power Frequency Withstand Voltage (Ud)	Between Fractures	kV	48
	Between Phases	kV	42
	Phase to Ground	kV	42
Lightning Impulse Withstand Voltage (Up)	Between Fractures	kV	95
	Between Phases	kV	75
	Phase to Ground	kV	75
Rated Short - time Withstand Current (Ik)		kA	20/25
Rated Short - circuit Duration (tk)		s	4
Rated Peak Withstand Current (Ip)		kA	50/63
Rated Short - circuit Breaking Current (Isc)		kA	20/25
Rated Short - circuit Making Current (Ima)	Vacuum Interrupter	kA	50/63
Rated Short - circuit Making Current (Ima)	Earthing Switch
Auxiliary Circuit and Control Circuit	Rated Voltage (Ua) DC/AC	V	＜400
Auxiliary Circuit and Control Circuit	Power Frequency Withstand Voltage (1min)	V	2000
Mechanical Life	Circuit Breaker	Times	10000
	Disconnecting Switch	Times	3000
	Earthing Switch	Times	3000
Electrical Life	Circuit Breaker	Class	E2
Electrical Life	Earthing Switch	Class	E2
Protection Grade of Cabinet Enclosure			IP4X
Protection Grade of Sealed Box			IP65

Environmental Conditions

Ambient Temperature (Max / 24h Avg / Min)	+40 °C / ≤+35 °C / -25 °C
Altitude	≤ 1000 m
Relative Humidity (Max at 25°C / Max at 40°C)	95% / 50%
Water Vapor Pressure (Max / Min)	2.2 kPa / 0.1 kPa
Solar Radiation	≤ 1000 W/m²
Pollution Class	Class II

Frequently asked questions

Do environmentally friendly cabinets have self-healing ability after insulation breakdown?

Gas-insulated environmentally friendly cabinets have certain self-healing ability. When insulation breakdown occurs due to transient overvoltage, the insulating gas (dry air, N2) molecules can recombine to restore insulation performance after the fault is removed, without permanent damage. However, solid-insulated eco-friendly cabinets do not have self-healing ability; insulation breakdown will cause permanent damage and require component replacement.

In which scenarios are environmentally friendly cabinets commonly used? (e.g., urban distribution network, industrial park)

They are widely used in urban distribution networks, new residential communities, industrial parks, data centers, airports, railways, and alpine/humid coastal areas. They are especially suitable for environmentally sensitive areas (e.g., scenic spots, ecological reserves) and projects with strict environmental protection requirements (e.g., green buildings, low-carbon industrial parks) due to their eco-friendly characteristics.

Know your supplier

ROCKWILL

Wenzhou Rockwill Electric Co., Ltd.
17yrs 500-1000 108000+m² US$150000000+ China

Online store

On-time delivery rate

Response time

100.0%

≤4h

Company overview

Workplace: 108000m² Total staff: 700+ Highest Annual Export(usD): 150000000

Services

Business Type: Design/Manufacture/Sales

Main Categories: Medium and High Voltage Switchgear/Power and Distribution Transformers/Instrument Transformers and Sensors/Lightning Protection and Electrical Insulation/Substations and E-Houses/Electrical Panel and Controlgear

$5600.00

Pricing calculator

Model

XGN-12/630-20/25

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.