12kV environmentally friendly fully sealed (air insulated without SF6 gas) upper isolation circuit breaker switch
Key attributes
| Brand | Switchgear parts |
| Model NO. | 12kV environmentally friendly fully sealed (air insulated without SF6 gas) upper isolation circuit breaker switch |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated short circuit breaking current | 25kA |
| Series | KHV-12 |
Product descriptions from the supplier
This series of environmentally friendly gas insulated switches uses epoxy resin to inject pressure packaging into the three-phase vacuum arc extinguishing chamber. Epoxy resin is a widely used insulation material in the industry, and due to its excellent insulation performance and high material stability, it has been widely used in the electrical industry. The insulation medium of the switch in the high-voltage cabinet is zero grade dry air or 99.99% pure N gas that complies with GB/T8979-2008. The main circuit arc extinguishing system of the switch body is encapsulated in the pole, and there is a busbar overlap surface at the upper end of the static knife, which is very convenient for busbar overlap. This series of switches is matched with the operating mechanism independently produced by the company. The whole cabinet application has a complete mechanism interlocking function, and the operating mechanism meets the five prevention requirements of the power distribution system. It can also expand the installation program lock, lock, flexibly configure secondary auxiliary and customize special application solutions for different projects.
Model description
| Serial Number | Item | Unit | Parameter | Remark |
|---|---|---|---|---|
| 1 | Rated Voltage | kV | 12 | |
| 2 | Rated Current | A | 630 | |
| 3 | Rated Breaking Current / Thermal Stability Time | kA/s | 20/4; 25/3 | |
| 4 | Rated Peak Withstand Current | kA | 50/63 | |
| 5 | Rated Short-circuit Making Current | kA | 50/63 | |
| 6 | Short-circuit Making Times | times | 30 | |
| 7 | Power Frequency Withstand Voltage: Phase-to-Ground / Phase-to-Phase | kV | 42 | In Dry Air or N₂ |
| 8 | Power Frequency Withstand Voltage: Break | kV | 48 | In Dry Air or N₂ |
| 9 | Lightning Impulse: Phase-to-Ground / Phase-to-Phase | kV | 75 | In Dry Air or N₂ |
| 10 | Lightning Impulse: Break | kV | 85 | In Dry Air or N₂ |
| 11 | Main Circuit Resistance | μΩ | ≤60 | Vacuum Arc Extinguishing Chamber + Disconnector |
| 12 | Mechanical Life of Arc Extinguishing Chamber | times | 10000 | |
| 13 | Mechanical Life of Isolation / Earthing Switch | times | 5000 | |
| 14 | Gas Tank Pressure | bar | 1.25 |
Installation dimensions
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: Low Voltage Electrical Apparatus/Instrument meters/Production equipment/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
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