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Transformer Station Class Surge Arrester Flexible Polymeric Housing

Categories Station Class Surge Arrester
Brand Name: Changgong
Model Number: Neutral Point Protection Device
Certification: ISO9001/ ISO14001/ OHSAS18001
Place of Origin: China
MOQ: No Limitation
Price: from 350 USD -680 USD
Supply Ability: 60,000pcs per year
Delivery Time: According to the type and quantity of products
Packaging Details: wooden cases or pallets
Product name: Neutral Point Protection Device
Product material: Polymeric-housing
Usually used for: Different types of transformers
OEM ODM services: Yes, Available
Samples: Yes, Available
Pirce terms: FOB CIF CFR EXW etc.
Standards: GB11032,JB/T8952,IEC60099-4
Conducted Tests: All type tested and deisng tested
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    Transformer Station Class Surge Arrester Flexible Polymeric Housing


    Transformer Station Class Surge Arrester Flexible Polymeric Housing


    1, Neutral Point Protection Device:

    ZW-JXB series,the over-voltage protection device for neutral points of the transformer,which is dedicated to the neutral point circuit for the power transformer of 110kV and 220kV,protects the neutral point insulation from damages by over voltage,and realize the transformation between the two operating ways,earthing or no-earthing,for neutral points of the transformer.

    In the domestic, due to the needs of power system operationg,no-earthing operating way is mostly adopted for neutral points of the transformer in 110kV~220kV effective earthing system.Generally, the structure for the transformer is split-pole insulation,and the insulation level is relatively low.And it should be protected by no-earthing neutral points of the transformer, for the lightning overvoltage, switching overvoltage,and power frequency transient overvoltage.

    At present, for neutral point overvoltage, there are three protection ways that gaps ,arresters, and gaps and arresters in parallel. For the gaps protection,it mainly restricts power frequency overvoltage, switching overvoltage , and resonance overvoltage, and partially restrains lightning overvoltage.For the zinc-oxide arrester protection,it mainly restricts lightning overvoltage. The protection of gaps and arresters in parallel,which should be employed to protect the overvoltage of lightning, switching and power frequency at the same time.And the gaps protect the neutral point insulation of transformer and the arrester,and prevent the arrester from exploding without enough circulation.


    2, Main Specifications and Technical Parameters

    Type

    Rated voltage of the transformer

    kV

    Voltage withstand for neutral points of the transformerIsolating switch

    Voltage withstand of lightning full wave and clipped wave

    kV (peak)

    1min

    power frequency

    kV

    ( valid value )

    Rated current

    A

    Actuator
    ZW-JXB-11011025095400

    CS8-5

    (hand operating

    or

    CJ6

    ( electric )

    ZW-JXB-220220320200600
    ZW-JXB-330330440292600

    CJ6

    ( electric )






















    TypeZinc-oxide arresterDischarge gapCurrent transformer

    Rated voltage

    kV

    ( valid value )

    Continuous operating voltage

    kV

    ( valid value )

    DC 1mA

    Reference voltage

    kV

    8/20µs residual

    voltage of

    lightning impulse

    kV(peak)

    Discharge voltage

    of power frequency

    Kv ±10%

    (valid value)

    TypeRatio
    ZW-JXB-110725810318683

    Fully closed

    support type of epoxy casting 10kV

    100/5

    200/5

    300/5

    400/5

    500/5

    600/5

    ZW-JXB-220144116205320166
    ZW-JXB-330207166292440252













    3, Applications

    Main Applications and Applicable Range
    a. Standard and professional.
    b.Novel design and integral installation.
    c. Effective protection and stable characteristics
    d. Flexible assembly and easy use.
    e. Strong technical force and considerate service.

    4, Ambient Conditions
    Ambient temperature : -40℃~+40℃.
    Altitude : no exceeding 2,000m.
    Wind speed : no exceeding 35m/s.
    Ice thickness: no exceeding10mm
    Earthquake intensity : no exceeding 8.
    Air pollution: Ⅳ and below
    Solar radiation intensity:1,000w/m2(in the midday of sunny day)


































































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