Overview
FKN12-12/FRKRN12-12D series indoor high-voltage load break switches with fuses are suitable for 3-phase high-voltage switchgear up to 12KV. They are used for control and protection of power equipment such as transformers, cables, overhead lines, etc., especially for terminal and box sub-stations in urban and rural networks. They are also suitable for control and protection of ring networks and double radiation power supply units.
Application Environment
Ambient air temperature: Upper limit +40°C; lower limit -25°C (storage and transportation allowed at -30°C); average value not exceeding +35°C within 24 hours.
◆Altitude: Not exceeding 100; Air Temperature: Daily average not greater than 95%, monthly average not greater than 90%
Earthquake Intensity: Not exceeding 8 degrees.
The surrounding air is not visibly contaminated by corrosive and flammable substances, water vapor, etc.
+ No frequent violent vibration:
+ Contamination Level: I Grade.
