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        Product List
        ZWHA-24F Outdoor HV AC Vacuum Circuit Breaker Type Sectionalizer
        ZWHA-24F outdoor HV AC vacuum circuit breaker type sectionalizer is used to make and break load current, overload current and short-circuit current in the power systemwith rated voltage 24kV, three-phase AC 50/60Hz. The sectionalizer is composed of ZWHA-24 vacuum circuit breaker an intelligent controller and a built-out voltage transformer. These three parts are electrically connected together by aerial sockets and outdoor sealed control cables. It has the functions of fault detection, protection & control and communication. It can reliably judge and detect MA level zero sequence current in boundary and short-circuit fault current between phases. It is applicable to substations, industrial and mining enterprises, unban and rural electric power networks, especially to the occasions with frequent operation and automatic power distribution networks for power network control and equipment protection. The product conforms to the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.
        Ambient conditions
        1. Altitude: ≤2000m;
        2. Ambient temperature: -40℃~+45℃;diurnal temperature rang ≤25℃;
        3. Wind speed: ≤35m/s, equivalent to wind pressure of 700Pa;
        4. Earthquake intensity: ≤grade 8;
        5. Relative humidity: monthly average ≤90%; daily average ≤95%;
        6. Ice thickness: ≤10mm
        7. Sunlight intensity: ≤1000W/m2
        8. Pollution degree: ≤Ⅳ(GB5582);
        9. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration.

        Technical specification
        No. Item Unit Data
        1 Rated voltage kV 24
        2 Rated insulation
        1min P.F
        Dry test 65/79(isolating distance)
        Wet test 50/64(isolating distance)
        Auxiliary loop and control loop 2
        Lightning impulse withstand voltage(peak) 125/145(isolating distance)
        3 Rated frequency Hz 50/60
        4 Rated current A 630、1250
        5 Rated operating sequence 0-0.3s-CO-180s-CO
        6 Rated short-circuit breaking current kA 16 20 25
        7 Rated short-circuit making current(peak) 40 50 63
        8 Rated peak withstand current(peak) 40 50 63
        9 Rated short-time withstand current 16 20 25
        10 Rated short-circuit duration s 4
        11 Breaking times of rated current times 1000
        12 Breaking times of rated short-circuit breaking current 20
        13 Closing time ms 20~80
        14 Opening time At max. operating voltage 20~80
        At rated operating voltage 20~80
        At min. operating voltage 20~80
        15 Complete breaking time ≤100
        16 Mechanical life times 10000
        17 Closing power J 70
        18 Rated input power for energy storage motor W ≤70
        19 Rated operating voltage and rated auxiliary loop current V DC/AC 220
        20 Energy storage time under rated voltage S ≤8
        21 Over-current
        tripping device
        Rated current A 5
        Tripping current accuracy % ±10
        22 Average opening speed m/s 1.5±0.2
        23 Average closing speed 0.8±0.2
        24 Contact close-boucing time ms ≤3
        25 Three-phase opening non-simultaneity ≤2
        26 DC resistance for each phase loop(with isolator) μΩ ≤80(150 with isolator)
        27 Allowed accumulative wear thickness for moving and static contacts mm 3
        28 Phase-to-phase spacing 390±1.5
        29 Contact self-closing pressure N 2000±200
        30 Net weight kg 125(155 with isolator)

        Main function features
        1. The product can be equipped with a protection and metering current transformer to realize 3-sectional type over-current protection and electricity consumption monitoring according to users’request;
        2. The product can be equipped with a built-in remote control device to realize remote operation;
        3. Equipped with a reclosing controller, it can realize the function of automatic reclosing.
        4. Iron or stainless steel body, manual or electric mechanism is available for free chioce;
        5. The product can meet the demands of the users from different regions as it has the norms of miniaturization and plateau types for users to choose.
        6. The switch can be equipped with an external isolator according to the users’ request.
        7. The operating mechanism can be permanent magnet type which can sensitively and quickly cut off the short-circuit current;
        8. All the other functions which the similar products have can be added to the switch according to the users’request.
        Outline and installation dimension