Your Professional Ring Main Unit Supplier

 

The company has a professional production and research and development base in hebei province. The total factory area is 100,000 square meters, and the transportation is very convenient. It has strong technical research and development capabilities and has won 56 national patents. Our product include dry type transformer / oil immersed type transformer / cubicle-type substation / high and low voltage switch cabinet / ring main unit / ring box / low voltage distribution box / instrument / capacitance, reactance, instrument transformer / schneider licensing series.

 

Why Choose Us

Quality Assurance

The company strictly implements standards such as ISO9001 international quality management system, ISO14001 environmental management system and OHSAS18001 occupational health and safety management system, and has established a perfect management system.

Products Application

Our products are used in many industries include State Grid, Rail Transit, Coal and Steel, Residential Area and Commerce, Petrochemical Engineering, Communications Technology.

 

Production Equipment

The company's products have complete qualifications and are equipped with advanced production and testing equipment such as CNC turret punch press, CNC shearing machine, CNC bending machine, laser cutting machine, fully automatic copper bar processing machine, fully automatic transformer test bench, pouring and drying.

Production Market

The company focuses on the Russian and Middle Eastern markets as well as Southeast Asia, and is currently completing cooperation with companies in Italy and Uzbekistan.

 

 

 
Advantages of Ring Main Units
 
01/

Cost Efficiency: The RMUs have efficient operation and easy installation, which can help in frugal use of labor and installation costs. Their design ensures that the downtime is kept at a minimum, saving time and money in the long run.

02/

Compact and Feature-Packed: Even though small in size, RMUs are power-packed with features that make their performance impressive. Their compact design is especially appropriate in urban areas and industrial settings where space comes at a premium.

03/

Improved Safety and Protection: Electrical installations demand special attention to safety. RMUs provide safety to the equipment and the people associated with them as well. Their design is strong and provides consistent performance in different conditions.

04/

Minimum Maintenance: RMUs are designed for rough use; hence, they require a minimum of maintenance, which reduces operational costs and minimizes the chances of an unwanted breakdown at any moment, thus assuring continuous performance over time.

 

Types of Ring Main Unit

 

Ac Metal Closed Ring Switchgear

Ac Metal Closed Ring Switchgear

AC metal-enclosed switchgear is a new generation of medium-voltage electrical products designed and successfully developed by introducing advanced technology and in accordance with the requirements of domestic agricultural power and regional network transformation.

Intelligent Gas Insulated Metal Closed Ring Switchgear

Intelligent Gas Insulated Metal Closed Ring Switchgear

GIS equipment has been widely operated all over the world since its practicalization in the 1960's. GIS is widely used not only in the field of high voltage and ultra-high voltage, but also in the field of extra-high voltage.

Intelligent Gas Insulated Metal Closed Ring Switchgear

Primary and Secondary Integration Products

The primary and secondary fusion ring network cabinet is a new type of power distribution equipment, which integrates the functions of primary and secondary switchgear, ring network cabinet and intelligent control to form a highly integrated system.

 

Specifications

 

Rated voltage

12V, 6KV

Rated Current

630A

Place of Origin

Baoding, China

Brand Name

Kechang Electric

Model Number

XGN15-12

Product Name

Ring Main Unit

Shell material

Super Galum

OEM

OEM Service Provided

Frequency

50/60Hz

Insulation Mode

Air Insulation /SF6 Gas Extinguishing

Protection Class

IP3X

Application

Electric Power Transmission

MOQ

1pcs

Warranty

2 Years

 

Structure of Ring Main Unit

 

 

Ring main unit cabinet is generally composed of four parts: switch room, fuse room, operating mechanism room and cable room (bottom frame).

 

The switch room is composed of various functional circuits (including grounding switches and load switches) and busbars between the circuits sealed in the metal shell. Shell by 3 mm cold rolled steel plate (or not embroidered steel plate) welded. Each functional loop includes a load break switch and a grounding switch. The load break switch is composed of a vertical moving contact system and a static contact at the bottom. When the switch is closed, the moving contact moves downward and the load switch is switched on. The grounding switch is composed of moving contact knife and static contact knife. In the process of spring movement, the grounding switch is switched on quickly. There are four rectangular assembly process holes at the upper and rear of the switch room, and the front of the ring cabinet is equipped with an observation window, which can see the "point" and "close" position of the grounding switch. Explosion-proof device is installed at the rear of the ring main unit.

 

The load break switch adopts pneumatic internal blowing structure, with strong arc extinguishing ability, and does not affect phase and ground insulation, dynamic and static contacts are equipped with arc contacts, greatly improving the times of breaking.

 

The fuse and the load break switch room constitute transformer protection loop. The high voltage current limiting fuse is installed in the epoxy poured insulating shell. After the fuse is broken, the firing pin pops up and the load switch breaks.

 

The operating mechanism room is located in the front of the ring network cabinet. In each functional loop, the load switch is equipped with human (or electric) energy storage spring operating mechanism, and the grounding switch is equipped with human energy storage spring operating mechanism. On the panel, there are opening and closing operation holes for the load switch closing operation, the manual opening rotation button and the grounding switch respectively. Load switch open and close position indicator light and electric open and close button, and equipped with analog line, switch status display board and lock position, load switch and grounding switch operation with interlocking device, to prevent misoperation.

 

Ac Metal Closed Ring Switchgear

 

Common Voltage Levels of the Ring Main Unit

10kV: Commonly used in distribution stations of urban residential communities and general factory enterprises.


12kV: Widely used in medium voltage distribution systems, such as distribution rooms of small factories and commercial buildings.


24kV: Used in industrial areas and large commercial complexes with high requirements for power supply capacity and reliability.


35kV: Suitable for high-voltage distribution scenarios such as large industrial and mining enterprises and substations.


40.5kV: Used in industrial production or large power transmission hubs with high voltage requirements.

 

Packaging and Delivery

 

Transport Package

Wooden Box

Package Size

100.00cm * 120.00cm * 150.00cm

Package Gross Weight

2000.000kg

 

Other Services

 

 

Make custom transformer
Supply drawing is best, or tells us the size, inductance, resistance and etc.

 

Lead time
7 to 15 working days or depending on order quantity.

 

Payment term
T/T , Western Union , PayPal or negotiation.

 

FAQ

Q: Which areas are ring main unit suitable for?

A: Ring main unit are specially designed with highly insulating materials and sealed areas for protecting divide from dust, moisture, and drastic temperatures. This property therefore supports their use in indoor and outdoor, as well as industrial and urban applications.

Q: In what ways do the features of ring main unit make power distribution reliable?

A: The ring main unit in the ring system help make sure that there is no disruption of power, even if a part of the system fails. This enhances the total reliability of the power distribution network by the quick switching of other feeders.

Q: What is the life expectancy of an ring main unit?

A: The robust construction and modern technology used in ring main unit give it a designed operating life of over 20 years. This expectancy can be improved through regular maintenance.

Q: Can ring main unit be easily maintained?

A: Yes, ring main unit have been designed for low maintenance. Their robust construction and reliability of performance reduce repair occurrences, making them cost-effective in power distribution.

Q: What is the working principle of ring main unit?

A: It works within a closed-loop electrical distribution system (ring system), ensuring continuous and stable power supply even when faults occur. At its core, the RMU employs a combination of switches, circuit breakers and fuses, meticulously engineered to manage electrical faults with precision.

As one of the leading ring main unit manufacturers in China, we warmly welcome you to wholesale high quality ring main unit made in China here from our factory. For more information, contact us now.electrical safety ring main unit, sustainability ring main unit, robust ring main unit

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