Ring Main Unit

11kv Gas Insulated Switchgear（Ring Main Unit SF6)

Brand: HENGFENGYOU
Series: HXGN
USES: Distribution
Country of origin: China
Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
Certification: ISO9001、CB、CE、KEMA

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11kv Gas Insulated Switchgear overview

The 11kV SF6 gas insulated switchgear produced by Hengfengyou Electric is a widely used high-voltage electrical equipment in modern power systems, which has the following significant characteristics:

1. High reliability: SF6 gas is an efficient arc extinguishing medium and insulation material, with much stronger arc extinguishing performance than air, which can effectively improve the ability of circuit breakers to break short-circuit currents. In addition, this gas has stable chemical properties under normal working conditions and is not easily decomposed or produces harmful by-products.

2. Compact design: Due to the excellent insulation performance of SF6 gas, higher voltage levels can be achieved in a smaller space, thereby reducing the volume of the entire switchgear and saving installation space.

3. Long lifespan and maintenance free: The excellent sealing structure ensures that internal components are not affected by external environmental factors such as moisture, dust, etc. This not only extends the service life of the equipment, but also greatly reduces the need for daily maintenance.

4. Safety: It is manufactured using advanced technology and strict production processes to ensure the safety and stability of the product during operation. Even if a fault occurs, it can quickly isolate the fault point and reduce the impact on the power grid.

5. Environmentally friendly: Although SF6 gas itself is one of the greenhouse gases, its impact on the environment is relatively small because its usage is very small and once packaged well, it will not leak into the atmosphere.

6. Intelligent function (optional): Some models may be equipped with intelligent monitoring devices that can monitor equipment status parameters in real time, such as temperature, pressure, etc., and transmit data to a remote control center through communication interfaces for remote management and fault warning.

11kv Gas Insulated Switchgear Technical Parameter

	C Module	F Module	V Module		CB Module
	Load switch	Gis	Vacuum Switch	Isolation/grounding switch	Vacuum Circuit Breaker	Isolation/grounding switch
Rated voltage kv	12	12	12	12	12	12
Rated frequency Hz	50	50	50	50	50	50
Power frequency withstand voltage (phase/fracture) kv	42/48	42/48	42/48	42/48	42/48	42/48
Lightning impulse withstand voltage kv	75/85	75/85	75/85	75/85	75/85	75/85
Rated current A	630		630		1250/630	1450
Breaking capacity
Rated closed-loop breaking current A	630
Rated cable charging switch current A	10
Rated break closing current (peak)A	50
Rated peak withstand current kA	50	80
Rated short-time withstand current kA/35	20
Rated short circuit breaking current kA		31.5	20		25
Rated transfer current A		1700
Fuse maximum current A	-	125
Loop resistance -n	≤300	≤600
Mechanical life (frequency)	5000	3000	5000	2000	5000	5000

11 kv gas insulated ring main unit, gas insulated ring main unit price

Structural diagram of switchgear

11kv Gas Insulated Switchgear FAQ

What is the rated voltage and current of the 11kV GIS?
The standard rated voltage is 11kV, with a typical current rating ranging from 630A to 2500A, depending on the design and application.
What type of gas is used for insulation in 11kV GIS?
Sulfur hexafluoride (SF6) gas is commonly used due to its excellent insulating and arc-quenching properties.
What are the key advantages of 11kV GIS over air-insulated switchgear (AIS)?
GIS offers a compact design, higher reliability, minimal maintenance, and better resistance to environmental factors like dust and moisture.
What is the expected lifespan of 11kV GIS?
With proper maintenance, 11kV GIS can operate reliably for 25-30 years or more.
Does 11kV GIS require special installation conditions?
It can be installed indoors or outdoors, but proper ventilation and a stable foundation are recommended for optimal performance.
How is gas leakage detected in 11kV GIS?
Built-in pressure sensors and gas density monitors alert operators to any potential SF6 leakage.
What safety features are included in 11kV GIS?
Features may include fault interruption, overcurrent protection, earthing switches, and mechanical interlocks to prevent incorrect operation.
What maintenance is required for 11kV GIS?
Periodic checks of gas pressure, contact resistance, and mechanical operation are needed, but maintenance frequency is lower than AIS.
Can 11kV GIS be expanded for future upgrades?
Yes, modular designs allow for easy expansion by adding additional bays or feeders as needed.
What standards apply to 11kV GIS manufacturing and testing?
Common standards include IEC 62271, IEEE C37.122, and local grid compliance regulations for safety and performance.