FKN12A-12D Indoor High Voltage Load Break Switch
FKN12A-12D Series air－blast load break switch and FKRN12A-12D series air－blast load break switch-fuse combination apparatus are new series switchgear applies to three-phase electric distribution system of rated 12KV, acting as protecting and control apparatus for transformers, cable and overhead wiring. These series are especially applicable in rural , urban terminal substation and prefabricated substations, as well as ring network power supply.
FKN12A-12D Series air－blast load break switch can break and make load current and over－current.
FKRN12A-12D Series air－ blast load break switch can break and make over-current, load current and short -circuit current(limited current fuse).
This Product is featured with impact structure, aesthetic appearance reliable interlock and high insulating level. In the spring storage operating mechanism, ON/OFF speed is free from the influence of the manpower. For the arc-extinguish electric arc-extinguish inside the insulatir1g cove r， the free gas occurs at sparking do not cause descend of insulating level between phases and phase to earth. The insulating cover clapboard separates electrified part thus boost protection 9rade of ring main unit. The copper－tungsten contact and main contact brings along reliable conductivity and long life. This Product achieves sound fame due to easy maintenance and operations as well as reliable performance. It is in compliance with per EC62271-105.
1. Ambient temperature-25℃－＋40℃
2. Elevation,,,; 1000m
3. Humidity: daily average humidity.;;95%, monthly.;;90%
4. The earthquake does not exceed degree 8
5. No fire, explosion, chemical errosion.
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