Indoor 3 Phase Isolator Switch 1250A

• Type: High-voltage
• Structure: Three-column Disconnector
• Installation: Indoor High-voltage
• Operation: Manual
• Grounding Mode: as Specification
• Movement Mode: as Specification
• Model NO.: GN19-12
• Number of Poles: Three Pole
• Grounding: as Specification
• Series: Three
• Run: as Specification
• Switching Mode: as Specification
• Common Model: as Specification
• Structure of Operating: Manual
• Certification: ISO
• Brand: Liyond
• Rated Voltage: 12kv
• Current: 400A-1250A
• Color: Grey
• Transport Package: Standard Export Packaging
• Specification: as specification
• Trademark: Liyond
• Origin: China

Product Description

GN19-12, 12C Series Indoor High-Voltage Disconnect Switches

GN19-12, 12C Series Indoor High-Voltage Disconnect Switches

The GN19-12, 12C series indoor high-voltage disconnect switches, manufactured by Yueqing Liyond Electric Co., Ltd., are designed for indoor use with a rated voltage of 12kV, three-phase AC 60Hz. These switches are used for dividing and closing circuits under voltage and no load conditions.

Features:

• Three-pole type design


• Consists of base frame, rotating shaft, lever, porcelain pillar insulator, gate knife, and connection board


• Improved mechanical strength and heat dissipation area


• Available in various models: GN19-12/400, 630, 1000, 1250

Working Principle:

The conductive part of the disconnect switch is fixed on the base by pillar insulators. Each phase consists of static contacts of contact knives and contact holders. The contact knives are connected to the tie insulator and spindle, which is operated through the handle and moving mechanism.

Model Meaning:

The model numbers indicate the rated current capacity of the disconnect switches, with variations in design based on the specific model (e.g., GN19-12/1000, 1250 includes a magnetic locking plate for enhanced short-circuit current handling).

Product Description

Yueqing Liyond Electric Co., Ltd. - Product Description

Environmental Conditions:

• Upper limit of ambient temperature: +40ºC


• Lower limit of ambient temperature: -10ºC


• Storage and transportation temperature: -25ºC


• Altitude not exceeding 1000m


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


• Water vapor pressure: daily average not exceeding 2.2 × 10-3Mpa, monthly average not exceeding 1.8 × 10-3Mpa


• Air should be free from corrosive or combustible gases, water vapor, and pollution


• No regular and violent vibration

Technical Parameters:

Please consult with the manufacturer, Yueqing Liyond Electric Co., Ltd., for further details.

Model	Rated voltage  (kV)	Rated current  (A)	Rated short-time withstand current (kA/4s)	Rated peak withstand current (kA)
GN19-12/400-12.5	12	400	12.5	31.5
GN19-12/630-20	12	630	20	50
GN19-12/1000-31.5	12	1000	31.5	80
GN19-12/1250-31.5	12	1250	31.5	80
GN19-12C/400-12.5	12	400	12.5	31.5
GN19-12C/630-20	12	630	20	50
GN19-12C/1000-31.5	12	1000	31.5	80
GN19-12C/1250-31.5	12	1250	31.5	80