Outdoor Ring Main Unit (RMU SF6)

Product overview: 

• HXGN15-12  Ring Main Unit (SF6 sulfur hexafluoride gas switchgear), box type AC metal closed switchgear.

• Rated AC frequency 50Hz/ 60Hz, maximum working voltage to 12kV, maximum working current to 4000A.

• High reliability of operation verification in more than 50 countries and regions around the world,Kuwait, UAE, Saudi Arabia, Iraq, Qatar, Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Libya, Myanmar, Philippines, Bangladesh, Nepal,Uzbekistan, Kazakhstan, Kyrgyzstan, Mongolia, Indonesia, Pakistan,Vietnam etc.

• Mainly used in factories, workshops, residential areas, high-rise buildings and other places of power distribution system, ring network power supply, also suitable for box substation.

• Meet many international standards: IEC62271-200:2003, GB3906, etc.

Product advantages:
 Leading technology:

•  Standard anti-corrosion and salt spray environmental plan to meet the stringent environmental requirements of the site.

•  The components can be equipped with ABB's original HAD/US type ISF6 circuit breaker or VD4-S type vacuum circuit breaker.

•  SFL-12/24 switchgear with components assembled in China can also be used according to the needs of users.

•  With perfect and reliable mechanical linkage, interlocking device, fully achieve the "five prevention" function (IP3X).

Cabinet put oneself in another's position:

•  The whole is made of 2mm hot dip galvanized plate.

•  Laser numerical control equipment cutting, drilling, bending, to ensure the processing accuracy.

• The exterior is coated with electrostatic epoxy powder, which will not take off paint for 50 years.

Functional units:

•  Manual and electric operation, remote control function.

•  Load switch, combination electrical appliances, its installation mode is flexible, can be installed on the left and right side, front, flip.

•  Two pressure relief holes, cable room and bus room (load switch) at the back of cabinet.

Busbar system:

•  High quality three-phase tin bus copper bar, high mechanical strength, good heat dissipation.

 Processing and assembly:

•  Dust-free workshop to ensure insulation.

•  Assembly workers have been trained for at least 6 months.

• Use power tools to ensure proper torque for bolting reinforcement.

•  The copper bus is CNC cutting, punching and bending to ensure the accuracy.

• Leybold Helium Mass Spectrometry Leak Detector, Germany -- ensure that the leakage rate of SF6 gas tank is below the national standard.

•  Computer-controlled equipressure pumping and inflating integrated equipment for vacuum chamber -- to ensure no deformation of gas box and 99.9% purity of SF6 gas.

Product parameters:
Conditions of use:

•  Altitude shall not exceed 2000m.

•  Ambient air temperature not higher than +40 ° C, not lower than -5 ° C (average temperature within 24 hours not higher than +35 ° C).

•  The humidity of the surrounding air should not exceed 50%. Low temperature allows a large relative temperature (e.g. +20 ° C is 90%). Consideration should be given to the effect of condensation caused by temperature changes.

•  Inclination with vertical plane is not more than 5°, and the whole group of cabinets is relatively flat, in line with (GBJ232-2) standard.

•  Requested in no violent vibration and impact, electrical components will not be corroded, no conductive dust place.

Ordering instructions:
The customer shall provide the following information:

• Main loop scheme diagram, secondary loop system diagram and auxiliary circuit control mode.

• Equipment layout and distribution room layout.

• Brand and model of main electrical components of the equipment.

• Incoming and outgoing lines.

• Other special requirements can be negotiated with WONE Electric.

What are the structural characteristics of the RMU SF6?

Fully Sealed and Fully Insulated:

• SF6 gas has excellent insulating properties. The ring main unit (RMU) uses SF6 gas for common box insulation, with all switching components sealed within the main enclosure. This design effectively prevents external environmental factors such as condensation, contamination, and flooding from affecting the internal electrical components, ensuring safe and reliable operation. The protection level typically reaches IP67.

Compact and Space-Efficient:

• The design is compact, requiring a small footprint, allowing it to be installed in limited spaces. It is suitable for various outdoor locations, such as city streets, residential areas, and industrial parks, effectively saving space resources.

Corrosion-Resistant Design:

• The enclosure is typically designed with special anti-corrosion features and painted with a protective coating, providing good resistance to corrosion. This allows the equipment to withstand harsh environmental conditions such as acid rain and salt fog, extending its service life.