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Gas-insulated AC Resonant test system

Gas-insulated AC Resonant test system

The system is used to do AC voltage test and PD measurement on electric apparatus, specially for GIS combined apparatus, suitable for high voltage lab or site application, especially suitable for locations with limited space such as under-ground substations and hydropower stations.

  •  
  • Application

    Thesystem is used to do AC voltage test and PD measurement on electric apparatus, speciallyfor GIS combined apparatus, suitable for high voltage lab or site application,especially suitable for locations with limited space such as under-groundsubstations and hydropower stations.    

    Thesystem could be specially designed for metal enclosed type electric devicessuch as GIS combined apparatus, GIS VT, etc. Also could equipped output bushingfor combined apparatus, insulation products, circuit breakers, isolatingswitches, instrument transformers, capacitors, etc.

    Resonance circuit is takenuse of to generate high voltage output.

    Features

    l  Low source power consumptiondue to high quality factor of reactor,

    l  low PD: metal enclosureisolated interference form outside, the system PD<3pC  

    l  Easy transportation: thetotal height is less than 1.8mwhile transportation. It is able to go across bridges and tunnels.

    l  No need of connecting cables:since the exciter transformer, variable frequency power supply and reactorcombines to one modular. The connecting cables between are avoided.

    l  Low noise: using high qualitycore, with special seismic reduction structure, the reactor brings very lownoise less than 60dB in operation.

    l  Good insulation performance:insulated by SF6, with relatively high safety factor. The system runs reliablyand safe.

    Technical parameters

    Model

    PDTP-252

    PDTP-550

    PDTP-880

    Rated  voltage Un, kV

    460

    740

    960

    Rated  current, A

    1/1.5/2/3

    Capacitance  range of test object, pF

    0~10000

    PD,  pC

    ≤10 under Un; ≤5 under 80% Un;

    Capacity  of regulator, kVA

    ≤50

    Working  frequency, Hz

    30~300

    Quality  factor Q

    ≥20

    Duty  cycle

    Continuous running for 10min under  rated voltage and current

    Annual  SF6 leakage

    ≤0.2%

    Weight,  kg

    1600

    3600

    6200

    Optional  components

    PD modular (including isolating  transformer, filter, coupling capacitor, PD detector, etc.)                         Lifting device,  suitable for use in substations site, lifting done via motor which makes the  system easy for transportation

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