Product Overview
The GN19-12 indoor high-voltage disconnector is a high-voltage switching device primarily designed for use in power systems with a rated voltage of 12kV and a frequency of 50Hz or below. This disconnector must be operated in conjunction with a CS6-1 type manual operating mechanism. Its main function is to safely make and break circuits under energized, no-load conditions. The product series also includes derivative versions such as a pollution-resistant type, a type for high-altitude applications, and versions designed for integration with voltage presence indicators.
Main Technical Parameters
|
Model |
Rated Voltage (kV) |
Rated Current (A) |
Rated Short-time Withstand Current (kA), 4s |
Rated Peak Withstand Current (kA) |
|
GN19-10(C)400-12.5 |
12 |
400 |
12.5 |
31.5 |
|
GN19-10(C)630-20 |
12 |
630 |
20 |
50 |
|
GN19-10(C)1000-31.5 |
12 |
1000 |
31.5 |
80 |
|
GN19-10(C)1250-40 |
12 |
1250 |
40 |
100 |
Type Designation and Meaning
- G: Disconnector (Isolator)
- N: Indoor type
- 19: Design serial number
- 12: Rated voltage in kV
- (C): Denotes the through-wall bushing type (standard type if omitted)
- □: Rated current in Amperes (A)
- □: Rated short-time withstand current in kiloamperes (kA)
- Example: GN 19-12 / (C) / 1000 - 31.5
Normal Service Conditions
Altitude: Up to 1000m above sea level.
Ambient Air Temperature: -25°C to +40°C.
Relative Humidity: Daily average ≤ 95%, Monthly average ≤ 90%.
Seismic Intensity: Not exceeding intensity 8 (as per Chinese seismic scale).
Installation Site: Must be free from fire and explosion hazards, severe pollution, chemical corrosion, and excessive vibration.
Outline and Installation Dimensions
The second image provides detailed outline and installation dimension drawings, along with corresponding dimension tables, for various models within the GN19-12 series (e.g., GN19-12, GN19-12C, GN19-12G, GN19-12CG). The drawings clearly indicate key installation dimensions (denoted as A, B, C, D, etc.) and mounting bolt specifications for each model.
Important Note
The phase-to-phase clearance for these disconnectors is available in several standard specifications, such as 210mm, 230mm, 250mm, and 275mm.
Custom phase-to-phase clearances and installation dimensions can be manufactured according to user requirements. Please contact the manufacturer directly to address any other specific requirements.
Summary: The provided documentation is comprehensive, covering all key information from the product overview and technical parameters to installation dimensions. If you require detailed dimensional data for a specific model (e.g., the 630A or 1250A variant), I can extract the precise figures from the dimension table in the second image for you.
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