|FKW18-12/24/40.5 Outdoor HV AC Load Break Switch|
SummaryFKW18-12/24/40.5 outdoor AC high voltage load break switch is used in rated voltage 12/24/40.5kV, rated frequency 50/60Hz outdoor three-phase power system. The load break switch is composed of disconnect blade, arc extinguishing chamber and operation mechanism. It has advantages of simple structure, strong extinguishing arc ability, reliable performance, etc.
Ambient conditions1. Altitude:≤3000m;
2. Ambient temperature:-25℃~+40℃;
3. Wind speed:≤35m/s;
4. Pollution degree:≤IV;
5. Earthquake intensity:≤8 degree;
6. Ice thickness:≤10mm.
Structure featureFKW18-12/24/40.5 outdoor alternating current high voltage load break switch is composed of disconnect blade, arc extinguishing chamber and operating mechanism. Arc extinguishing chamber is made of insulating materials with merits of high electric performance, arc-endurance, high strength Built-in linking spring with fast acting mechanism to ensure breaking of load current effecting free from operating speed, fast or slow. The arcing gap and disconnecting gap of the load breaker switch is parollel in the course of opening and closing, so the arcing gap is only used to extinguish arc, no task for carrier current, simplifying arcing structure; however the disconnect gap only takes on task for carder cuffent and short-circuit closing，not participating in extinguishing arc, so simple in structure and long in lifetime In this way, the load break switch can be used as disconnect switch when don't consider the action of arcing gap，and with the action of arcing gap，the disconnect switch is changed into load break switch This load break switch adopts manual linking rod or motor operating mechanism to operate. and to lock up location of opening & closing There is visible gap of switch after opening to produce functions of isolating and protection The LBS could be mounted on pole outdoor, could suit for pollution with IV degree，horizontal or vertical installation, very convenient for setting cables outdoor with few maintenance and arc extinguishing chamber breaking load without maintenance for 100 times The A, B, C three-phase of the load breaker switch is in turn installed on one great sectional galvanized square steels base，joint together with one integrative drive axis inter-phase to ensure for closing & opening three poles synchronously. The blade of the switch uses press spring to assure enough connection pressu re to the contact, in this way, operation is convenient and the blade is stable, in the same time, the reliability of opening-closing ope ration is guaranteed The switch opens or closes under rated load current, not requires connecting secondary protection device.