LW□-252 Outdoor High-Voltage AC Sulfur Hexafluoride (SF₆) Circuit Breaker

  LW□-252 Outdoor High-Voltage AC Sulfur Hexafluoride (SF₆) Circuit Breaker is an outdoor product. It is suitable for AC 50Hz power grids with a maximum voltage of 252kV in areas where the altitude does not exceed 2000 meters, the ambient temperature is not lower than -30℃, and the pollution class is not higher than Class IV. It is used to interrupt rated current and fault current, or switch circuit lines, realizing the control and protection of power systems, and can also be used as an interconnection circuit breaker.

   This product uses SF₆ gas as the arc-extinguishing and insulating medium, adopts imported self-energy arc-extinguishing technology, and is equipped with a new spring operating mechanism. It features a long electrical service life, low operating work, low noise and high reliability, with a simple structure, compact size and a long maintenance-free period. It is well adapted to the current development trend of oil-free and large-capacity power equipment.

 Structural characteristics

    The circuit breaker adopts a three-phase porcelain pillar single break structure, with a spring operated mechanism for each phase, and three-phase electrical linkage, so the appearance is novel and exquisite. The circuit breaker uses SF6 gas as the insulation and arc extinguishing medium, and adopts a pointer type density relay to monitor its pressure and density progress. Due to the use of self powered arc extinguishing principle and optimized design in the circuit breaker motion system, the mechanical efficiency has been effectively improved and the operating power has been reduced;

    Excellent breaking performance and long electrical lifespan;

 Each pole of this product is installed on a mechanism box, which is centrally mounted on the foundation. The box contains a spring operated mechanism and an electrical control unit. The output rod of the mechanism is connected to the crank arm. The surface of the mechanism box bracket is hot-dip galvanized, and the fasteners are hot-dip galvanized. The mechanism box shell is made of stainless steel material, so the product has excellent corrosion resistance. High mechanical reliability, capable of frequent operation;

    Due to the inherent high insulation strength of sulfur hexafluoride gas and the use of contact movement in circuit breakers, there is no reignition of capacitive current during circuit breaker breaking;

    The external insulation level is high, and the external insulation is designed with a large creepage distance, which has excellent pollution resistance performance.

    Strong current carrying capacity: Conduct temperature rise tests at 1.2 times the rated current of 4000A, and there is still a large margin for temperature rise at each point;

    The overall appearance structure of the product is compact, easy to install and debug on site, and the maintenance workload is small.

 1. Weight M: 4500kg (with gas); Total weight of gas: 24kg.

2. Basic load: static 4500kg (three poles); 1500kg (per pole) dynamic horizontal direction F: 2500kg; Vertical direction (upward) 3500kg; Vertical direction (downward)6000kg

 3. The surface levelness of concrete shall not exceed 1.5mm.

 4. The installation hole for connecting the terminal block to the primary wire is drilled by the user on site according to their needs, and the terminal block material is aluminum alloy 2A12-T4.

 Ordering Instructions

  Circuit breaker model and specifications;

  Rated electrical parameters (voltage, current, breaking current, etc.)

  Environmental conditions for use (ambient temperature, altitude, environmental pollution level)

  Rated electrical parameters of the control circuit (rated voltage of the energy storage motor, rated voltage of the opening and closing coils); The names and quantities of required spare parts, specialized equipment, and tools (to be ordered separately); The wiring direction of the terminal at once.