China Originated Gis Power Supply System

• Certification: ISO9001
• Shell Material: Stainless Steel
• Voltage Level: Medium Voltage
• Current: DC
• Transport Package: Packages
• Specification: 12kv
• Model NO.: LY-12 CFV
• Trademark: LIYOND
• Origin: China
• Production Capacity: 5000/Year

Product Description

Discover our 12kV Indoor Co-boxed SF6 Gas Insulated Switchgear from Yueqing Liyond Electric Co., Ltd. - the original China Originated GIS Power Supply System.

LY-12 Gas Insulated Switchgear Series

LY-12 Gas Insulated Switchgear Series

The LY-12 gas insulated switchgear series is a compact metal-sealed switchgear system designed for 10KV power distribution systems. It offers unique flexibility with its expandability, allowing for full and semi-modular combinations.

The stainless steel gas chamber of the LY-12 switchgear is filled with SF6 gas, providing complete sealing of all live parts and the switch, isolating them from external influences. This fully-sealed structure ensures reliability, safety, and maintenance-free operation.

Basic Module Schemes:

• C: Two-position load break switch unit with earthing switch


• F: Load break switch-fuse combination module


• V: Vacuum switch module with earthing switch and two-position load (isolating) switch


• D: Cable connection module without earthing switch


• De: Cable connection module with earthing switch

Working Conditions:

• Ambient air temperature: +40 °C to -40 °C


• Air relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%


• Altitude: ≤ 1500 meters


• Seismic intensity: not exceeding 8


• Operating environment: no fire, explosion, serious pollution, chemical corrosion, or severe vibration

Special Conditions:

Manufacturer and end user must agree on special operating conditions. Consult the manufacturer and supplier for harsh environments.

Main Technical Parameters:

For detailed technical specifications, please contact Yueqing Liyond Electric Co., Ltd.

Item	Unit	C module	F module	V module
		Load break Switch	Combination apparatus	Vacuum switch	Disconnecting/   earthing switch
Rated voltage	kV	12	12	12	12
Rated frequency	Hz	50	50	50	50
Power frequency withstand voltage (interphase/fracture)	kV	42/48	42/48	42/48	42/48
Lightning impulse withstand voltage	kV	75/85	75/85	75/85	75/85
Rated current	A	630	*	630	630
Rated closed loop breaking current	A	630
Rated cable charged breaking current	A	10
Rated short-circuit making curemt (peak)	A	50	80
Rated peak withstand current	kA	50
Rated short time withstand current	kA/4s	20
Rated short circuit breaking current	kA		31.5	20
Rated transfer current	A		1700
Maximum current with fuse	A	-	125
Loop resistance	Ω	≤300	≤600
Mechanical life	Times	5000	3000	5000	2000

Product Description

Ordering Instructions for Switchgear

*Depends on fuse rated current value.

When ordering from Yueqing Liyond Electric Co., Ltd., please provide the following technical information:

1. Main circuit diagram, arrangement diagram, and floor plan


2. Schematic diagram of the secondary circuit of the switch cabinet


3. Models, specifications, and quantities of all electrical components in the switchgear


4. If a low-voltage box needs to be set up, please provide an explanation


5. Explanation of any special environmental conditions in which the switch cabinet will be used