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        Product List
        FZW28-12F(FFK) Outdoor HV AC Vacuum Load Break Switch Type sectionalizer
        FZW28-12F(FFK) outdoor HV AC vacuum load break switch type sectionalizer is for pole-mounting installation, and has manual and electric operation functions. The sectionalizer adopts FZW28-12 type of free-of-maintainance load break switch as its main body which uses vacuum arc-extinguishing and SF6 gas as the insulation mediums to earth and between phases. The switch is composed of FZW28-12 vacuum LBS and controller. It has the functions of fault detection, protection & control and communication. Installed on the overhead line of voltage l0kv, it can remove automatically the single-phase grounding fault and short-circuit fault between phases. The installation position can be the duty boundary site of 10kV distribution user incoming line or the T branch line junction which conforms to requirements. The switch can not be for the use of series connection. 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: ≤3000m;
        2. Ambient temperature: -30℃~+40℃;diurnal temperature rang ≤25℃;
        3. Wind speed: ≤35m/s
        4. Earthquake intensity: ≤grade 8;
        5. Relative humidity: monthly average ≤90%; daily average ≤95%. Dew may be condensed in the interior of the tank body when high humidity drop rapidly;
        6. Ice thickness: ≤10mm
        7. Pollution degree: ≤Ⅳ(GB5582);
        8. Applicable occasions: no fire and explosion danger, no chemical corrosion and no frequent severe vibration
        9. Neutral grounding mode: neutral non grounding, neutral grounding via arc-extinguishing coil, neutral grounding via low-resistance.

        Technical specification
        Rated technical parameters for switch
        Item Unit Data
        Rated voltage kV 12
        Rated insulation level 1min P.F withstand voltage (phase to phase, phase to
        earth/across open contacts)
        kV Dry test 42/48
        Wet test 34
        Lightning impulse withstand voltage
        (phase to phase, phase to earth/across open contacts)
        kV 75/85
        Rated frequency Hz 50/60
        Rated current A 630
        Rated short-time withstand current/ rated short-circuit duration kA/4s 16 20
        Rated peak withstand current(peak) kA 40 50
        Rated short-circuit making current 40 50
        Mechanical life 10000
        Net weight kg 185

        Note:1. The insulation withstand voltage should be amended accordingly if the altitude of the procuct’s using site is higher than 1000m;
        2. Do not make the insulation between phases when PT is built in the switch.

        Parameter table for control device
        No. Item Rated value Remarks
        1 Input operating voltage AC 220V 12
        Output voltage(open-operating) AC 220V / DC 48V 630
        2 Input operating voltage frequency 50Hz 42
        3 Allowed fluctuating range for input operating voltage ±20% 34
        4 Overall unit’s power consumption <10W 75
        5 Sampling phase current input value 120~600A(primary value) 50
        6 Low voltage action value 10~140V(secondary value) 16
        7 Allowed sampling error for input power value ±5% O-0.3s-CO-180s-CO
        8 Delaying time value of over-current protecting action 0.3~1s(can not be set) 30
        9 Zero-sequence current setting value 0.2~60A(primary value) 40
        10 Earthing action delaying time 0~1800s 40

        Main function features
        1. Function of zero-sequence protection: After detecting the line zero-sequence earthing fault, the switch will take the action and open automatically within the delay time set by the controller.
        2. Protection of short-circuit between phases: When short-circuit fault between phases occurs in the line, the boundary switch will open immediately once the substation open to isolate the fault area.
        3. Users’load monitoring: Users’load monitoring can be realized after through controller and communication system after the switch is built in a metering CT.
        4. Wireless protection: The embedded GPRS communication module which supports GPS communication can realize the function of “four remote”.
        Outline and installation dimension