SF6-Free Single Circuit Air-Insulated Ring Main Unit-12kV

Name: SF6-Free Single Circuit Air-Insulated Ring Main Unit-12kV
Brand: Wenzhou Rockwill Electric Co., Ltd.
SKU: 1853
Price: 4700.00 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 Single Circuit Air-Insulated Ring Main Unit-12kV
Rated voltage	12kV
Rated normal current	630A
Rated frequency	50/60Hz
Series	XGN

Description

Sealed air-insulated ring main unit for single-circuit distribution with SF₆-free technology. Air at atmospheric pressure in a sealed enclosure delivers reliable insulation with no gas monitoring or leakage risk. Integrated load break and earthing switches provide safe switching and visible isolation for urban substations, industrial parks, and commercial facilities.

Product advantages

Normal pressure sealing: No leakage risk, ensuring excellent insulation performance.
Air insulation: The gas requires no treatment. Through improved processing techniques, selection of high-grade materials, and optimized electric field design, it meets the demand for miniaturization.
Simple operating mechanism: With a simple and stable structure, its mechanical service life can reach 10,000 times.
Miniaturization: Its volume is 1/5 that of KYN, equivalent to the volume of conventional pressure-type ones, saving space.
Standardized expansion method: Facilitates on-site installation and reduces power outage time.

Parameters

Name		Unit	Parameter Value
Rated Voltage (Ur)		kV	12
Rated Frequency (fr)		Hz	50
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

Are environmentally friendly cabinets suitable for humid coastal areas?

Yes, but they need to adopt anti-corrosion and moisture-proof designs. Humid coastal areas have high air humidity and salt spray corrosion, so environmentally friendly cabinets for these areas use anti-corrosion materials (e.g., hot-dip galvanized steel, stainless steel), enhanced sealing structures, and dry air with a dew point of ≤ -50℃. Some high-protection models (IP65) can effectively resist salt spray and moisture erosion, ensuring stable operation.

Can environmentally friendly cabinets be used in alpine regions with low temperatures?

Yes, they are highly suitable for alpine regions. The insulating gas (dry air, N2) used in eco-friendly cabinets has a very low boiling point (N2 boiling point: -195.8℃) and will not liquefy even at ultra-low temperatures (-40℃ or lower). The cabinet's structural materials and seals are also selected for low-temperature resistance to avoid performance degradation due to cold brittleness. They are widely used in alpine regions such as northern China and high-altitude areas.

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

$4700.00

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.