12kV 24kV 36kV Pure air/Nitrogen Insulated Ring Main Unit(RMU) Ensuring Stable Power

Name: 12kV 24kV 36kV Pure air/Nitrogen Insulated Ring Main Unit(RMU) Ensuring Stable Power
Brand: Rockwill Electric GROUP Co., Ltd
SKU: 12172
Price: 1.99 USD
Availability: InStock

Rockwill Electric GROUP Co., Ltd

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

Rockwill Electric GROUP Co., Ltd

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

Attributes Description Documentation Resource Library Supplier

Key attributes

Brand	ROCKWILL
Model NO.	12kV 24kV 36kV Pure air/Nitrogen Insulated Ring Main Unit(RMU) Ensuring Stable Power
Rated voltage	12kV
Rated normal current	630A
Rated frequency	50/60Hz
Series	REC

Product descriptions from the supplier

Description

Description：

ROCKWILL® attaches great importance to product quality and manufacturing technology, and treats every step of product production with precision and meticulousness. Only insulation gas is used to comprehensively compare heating dry air, nitrogen, carbon dioxide, and pure air. Pure air synthesized with extremely low moisture content and high purity is selected as the preferred insulation gas to replace SF6. The core switch unit of the product adopts a brand new vacuum arc extinguishing chamber soft package casting process, combined with a carefully designed rotating three-position switch, with a simple and compact overall structure; The fully sealed gas box replaces SF6 with pure air, with a highly advantageous electric field distribution design, and the partial discharge of the entire cabinet is below 5pC; The salt spray resistance test of the operating mechanism of the zinc inlay alloy surface treatment process has exceeded 168 hours, and the longest service life can reach 30000 times.

Feature：

Pure air/Nitrogen insulated ring main unit
Environmentally friendly gas
Zero carbon emissions, zero waste
Intensive and meticulous producing, Seeking finer quality
Comply with IEC/ANSI standards
Provided customized manufacture
Whole solutions for design, assembly, test...
Accountable solution for safety and reliability
Wide range offering, easy business and convenient installation

Main technical parameters (three phase)：

12kV

N	Item	Unit	Data
1	Rated maximum voltage	kV	12
2	Rated maximum current	A	630/1250
3	Rated frequency	Hz	50/60
4	Method of Arc Suppressing		Vacuum
5	Method of Insulation		Pure air/Nitrogen
6	Rated short circuit breaking current	kA	20/25
7	Rated peak value withstand current	kA	50/63
8	Rated 1min power frequency withstand voltage	kV	42
9	Rated lightning impulse voltage	kV	75
10	Operation sequence	/	C-0.3-CO-180-CO
12	Resistance loop	µΩ	≤140
13	Rated gas pressure (20℃ gauge)	Mpa	0.02
14	Minimum operating gas pressure	Mpa	0
15	Mechanical life - Circuit breaker	N	10000
	Mechanical life - Load break switch	N	3000/6000
	Mechanical life - Disconnector	N	3000/6000
	Mechanical life - Earthing switch	N	3000/6000
16	Protection grade - Gas tank		IP67
	Protection grade - Shell		IP4X
17	Rated annual air leakage rate	%	0.01

24kV

N	Item	Unit	Data
1	Rated maximum voltage	kV	24
2	Rated maximum current	A	630/1250
3	Rated frequency	Hz	50/60
4	Method of Arc Suppressing		Vacuum
5	Method of Insulation		Pure air/Nitrogen
6	Rated short circuit breaking current	kA	20/25
7	Rated peak value withstand current	kA	50/63
8	Rated 1min power frequency withstand voltage	kV	50
9	Rated lightning impulse voltage	kV	125
10	Operation sequence	/	C-0.3-CO-180-CO
12	Resistance loop	µΩ	≤150
13	Rated gas pressure (20℃ gauge)	Mpa	0.04
14	Minimum operating gas pressure	Mpa	0
15	Mechanical life - Circuit breaker	N	10000
	Mechanical life - Load break switch	N	3000/6000
	Mechanical life - Disconnector	N	3000/6000
	Mechanical life - Earthing switch	N	3000/6000
16	Protection grade - Gas tank		IP67
	Protection grade - Shell		IP4X
17	Rated annual air leakage rate	%	0.01

36kV

N	Item	Unit	Data
1	Rated maximum voltage	kV	36
2	Rated maximum current	A	630/1250
3	Rated frequency	Hz	50/60
4	Method of Arc Suppressing		Vacuum
5	Method of Insulation		Pure air/Nitrogen
6	Rated short circuit breaking current	kA	20/25
7	Rated peak value withstand current	kA	50/63
8	Rated 1min power frequency withstand voltage	kV	70
9	Rated lightning impulse voltage	kV	170
10	Operation sequence	/	C-0.3-CO-180-CO
12	Resistance loop	µΩ	≤160
13	Rated gas pressure (20℃ gauge)	Mpa	0.04
14	Minimum operating gas pressure	Mpa	0
15	Mechanical life - Circuit breaker	N	10000
	Mechanical life - Load break switch	N	3000/6000
	Mechanical life - Disconnector	N	3000/6000
	Mechanical life - Earthing switch	N	3000/6000
16	Protection grade - Gas tank		IP67
	Protection grade - Shell		IP4X
17	Rated annual air leakage rate	%	0.01

Compact type pure air/nitrogen insulated ring main unit

Type	Top extension of single panel	Side extension of single panel	Single panel size of compact module
Circuit Breaker Panel	390 * 850 * 1950	390 * 850 * 1950	390 * 850 * 1950
Load Break Switch Panel	390 * 850 * 1950	390 * 850 * 1950	390 * 850 * 1950
PT Panel (with 3phase, 5 columns)	600 * 850*1950	600 * 850 * 1950	600 * 850 * 1950
PT Panel (single phase)	420 * 850 * 1950	420 * 850 * 2000	420 * 850 * 1600
Bus Riser	375 * 850 * 1950	375 * 850 * 2000	375 * 850 * 1600
Metering panel	750 * 850 * 1950	750 * 850 * 2000	750 * 850 * 1600

Documentation Resource Library

Restricted

REC-12 Pure air/Nitrogen insulated ring main unit

Brochure

English

Consulting

FAQ

Q: What is an environmentally friendly cabinet? What are its main characteristics?

An environmentally friendly cabinet is a medium-voltage power distribution equipment designed to replace traditional SF6 gas-insulated cabinets. Its core characteristics include using eco-friendly insulating media (such as dry air, N2, or N2/CO2 mixture) with low or zero global warming potential (GWP), no environmental pollution after leakage, compact structure, high operational reliability, and suitability for various harsh application scenarios.

Q: How does an environmentally friendly cabinet differ from traditional SF6 gas-insulated cabinets?

The key difference lies in the insulating medium. Traditional cabinets use SF6, a strong greenhouse gas with high GWP. Environmentally friendly cabinets adopt eco-friendly media (dry air, N2, etc.) that are non-toxic, non-greenhouse effect, and require no special recycling. Additionally, eco-friendly cabinets have lower long-term operation and maintenance costs, while their insulation and breaking performance can meet the same industry standards as SF6 cabinets.

Know your supplier

ROCKWILL

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

Rockwill Electric GROUP Co., Ltd

17yrs 500-1000 employees 108000m²+m² US$150000000+ China

Online store

On-time delivery rate

Response time

100.0%

≤4h

Company overview

Workplace: 108000m²m² Total staff: 700+ Highest Annual Export(usD): 150000000

Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000

Services

Business Type: Design/Manufacture/Sales

Main Categories: High Voltage Electrical Apparatus/Electric transformer

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.

Negotiable

Pricing calculator

Model

REC-36kV-630/1250A

REC-24kV-630/1250A

REC-12kV-630/1250A

Consulting

REC-12 Pure air/Nitrogen insulated ring main unit

Warranty by

Whole life care manager

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

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12kV 24kV 36kV Pure air/Nitrogen Insulated Ring Main Unit(RMU) Ensuring Stable Power

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