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High Voltage Outdoor Ring Main Unit

High Voltage Outdoor Ring Main Unit

The High voltage outdoor ring main unit assembly is a complex outdoor ring cage tailored for high voltage applications. It encapsulates a comprehensive suite of switching, protection, control and monitoring components in a compact, highly resilient framework designed for the outdoors. This multifunctional device is widely used in medium voltage distribution network, which promotes the effective distribution, control and protection of power.

Zi Kai High voltage outdoor ring main unitproduct parameters:

item unit C-Load switching unit
C-Load switching unit F-Combined electrical unit V-Circuit breaker unit
Rated voltage kV 12/24 12/24 12/24
Rated frequency Hz 50 50 50
Rated current A 630 125 630
Rated transfer current A 1750
Rated insulation level 1min power frequency voltage resistance (phase ground) Alternate and opposite kV 42/65
Between fractures kV 48/79
Lightning impulse voltage Alternate and opposite kV 75/125
Between fractures kV 85/145
Rated short-circuit breaking current 20 315 20
Rated short-circuit closing current kA 50 80 50
Rated short-circuit closing current kA 50 50
Rated short-time withstand current Main circuit kA 20 20 20
Ground switch kA 20 20 20
Rated short duration Main circuit S 4 4
Ground switch s 4 4 4
Rated peak withstand current Main circuit kA 50 50
Ground switch kA 50 50 50
Internal arc test A 630 20kA/0.5s 630
Rated closed-loop breaking current A 630 Limited by the fuse 630
Rated active load breaking current A 10 Limited by the fuse 25
Rated cable charging breaking current time 5000 17.4 3000
Mechanical life Load/isolation switch time 3000 5000 3000
Ground switch time 3000 10000
Vacuum circuit breaker Mpa
SF6 Gas pressure (absolute pressure at 20℃) 0.035
Annual leakage rate ≤0.025%yaar
Protection class of air box and fuse barrel IP67
Cabinet and shell protection class IP4X


Zi Kai High voltage outdoor ring main unit Main fittings


Zi Kai High voltage outdoor ring main unit advantages and application

advantages

Compact structure: HV Outdoor RMU is compact and has a small footprint, making it suitable for use in environments with limited space.

Strong environmental adaptability: fully enclosed design, with good dustproof, waterproof, moisture-proof ability, adapt to a variety of harsh outdoor environment.

High reliability: The internal components have been carefully designed and strictly tested to maintain stability and reliability under high load and long time operation.

Easy maintenance: The modular design facilitates maintenance and replacement of faulty components, reducing maintenance costs and time.

application

High voltage outdoor ring main unit plays a key role in urban power system, which is not only widely used in the core links of substation inlet and outlet, cable branch box and opening and closing station of urban power grid, so as to realize the flexible distribution of electric energy and efficient fault isolation.

In large industrial parks, it is also an important equipment to ensure the stability of power supply for important loads and improve the reliability and security of the overall power supply.

In commercial centers, such as commercial areas, shopping centers and other densely populated areas, High voltage outdoor ring main unit effectively reduces the footprint of power distribution equipment through its compact design, while beautifying the surrounding environment.

In addition, in residential areas, including residential and villa areas, High voltage outdoor ring main unit is a key part of the community's power distribution system, providing a stable and reliable power supply for residents' daily life.


Zi Kai High voltage outdoor ring main unit Details

certificates


Product standard

GB 1984-2003 High voltage AC circuit breaker

GB 1985-2005 High voltage AC isolation switch and ground switch

GB 3804-2004 3.6kV~40.5kV high voltage AC load switch (IEC 60265)

GB 16926-2009 AC high voltage load switch fuse combination (IEC 60420)

306kV~40.5kV AC metal-enclosed switchgear and control equipment (IEC 62271)

GB/T11022-2011 Common technical requirements for High voltage switchgear and control equipment (IEC 60694)

GB/T11023 High pressure switchgear - sulfur hexafluoride gas seal test method

GB 4208-2008 Enclosure Protection Class (IEC 60529)

DL/T404 3.6kV~40.5kV AC metal enclosed switchgear and control equipment

DL/T 728-2000 Technical Guide for ordering gas insulated metal enclosed switchgear

Q/CSG 10012 Technical Guidelines for urban distribution Networks of China Southern Power Grid


FAQ

1、Are you a trading company or a direct manufacturer?

We are a professional factory with 10 years of industry experience, specializing in the manufacture of high and low voltage switchgear, substations, transformers, cable distribution boxes and all kinds of electrical equipment, including but not limited to vacuum circuit breakers, load break switches, etc. Our factory with its excellent product quality and professional service, won the State Grid Corporation of China excellent supplier title.


2、 Can I get some samples?

Yes, sample order is available for quality check and market test.


3、What is your payment terms ?

30%T/T in adcance,70% before shipment . West union , L/C are also accept.


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