Switch Disconnector_NAL/NALF Switch Disconnector_Wuxi Lanhong Electric Co., Ltd.

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    86-510-83726583
    86-510-83720170
    E-mail: lanhong@lhdz.com
     
     
     
     
    NAL/NALF(12KV,17.5~24KV,40.5KV ) switch disconnector(licensed by ABB, manufactured by Wuxi Lanhong Electric Co., Ltd.
    NAL switch disconnector (comply with IEC 60265-1:1997 GB3804-1990)
    NALF fuse switch disconnector-fuse composite apparatus (comply with IEC60420:1990 GB16926-1997)
    Both NAL switch disconnector and NALF fuse switch disconnector-fuse composite apparatus which combine air-compression type and air-generation type to extinguish arc are designed by ABB with 50 years’ experience.
    So far, more than 550,000 units installed worldwide are in use.
    By combining NAL switch disconnector with fuse, the fuse switch disconnector possesses both advantages. NAL switch disconnector disconnects any load currents until its rated breaking current, the fuse and its striker break any over-load current until any fuse switch disconnector’s rated short-circuit breaking current. NAL switch disconnector and NALF fuse switch disconnector are largely used as transformer switch in distribution networks, motor switch or capacitor switch.

    NAL12 / NALF12
    NAL24 / NALF24
    NAL36 / NALF36

    NAL12

    NAL12

    NAL24

    NAL36

    NALF12

    NALF12

    NALF24

    NALF36
      Experiment report

    NAL12

    NALF12

    NAL36

    NALF36

    NAL24

    Technical Authorization
    of ABB
       
     

    NAL/NALF Technical Data

    Rated voltage

    KV

    12(IEC)

    12(GB)

    24(GB)

    40.5(GB)

    Rated frequency

    Hz

    50/60

    50

    50

    50

    Rated impulse withstand voltage

    Between phases and to earth

    KV

    75

    75

    125

    170

    Between breaks

    KV

    85

    85

    145

    195

    Rated power frequency withstand voltage 50Hz,1min

    Between phases and to earth

    KV

    42

    42

    65

    95

    Between breaks

    KV

    42

    48

    79

    110

    Rated short circuit making current(peak)

    KA

    67

    50

    50

    50

    Rated peak withstand current

    KA

    82

    50

    50

    50

    Short time withstand current

    KA

    25/2s

    20/4s

     

    20/2s

    20/2s

    31.5/2s

     

    Rated active load switch breaking current

    A

    630

    630

    1250

    630

    630

    Rated closed-loop breaking current

    A

    630

    630

    1250

    630

    630

    Rated cable charging breaking current

    A

    10

    10

    16

    21

    Main circuit resistance

    μ Ω

    ≤105

    ≤105

    ≤105

    ≤105

    Phase distance (center distance)

    mm

    150/170/210

    210

    170/210

    275

    360

    Rated current of fuse switch disconnector

    A

    100

    100

    100

    100

    Maximum fuse current of the fuse switch disconnector

    A

    125

    125

    125

    50

    Main circuit resistance the fuse switch disconnector

    μ Ω

    ≤250

    ≤250

    ≤250

    ≤250

    Rated short circuit breaking current of fuse switch disconnector

    KA

    31.5

    31.5

    31.5

    31.5

    Rated short circuit making current of fuse switch disconnector (peak)

    A

    80

    80

    80

    80

    Rated transfer current of fuse switch disconnector

    A

    1200

    1200

    800

    200

    Maximum operating torque

    Switch disconnector, with K type single spring operating mechanism

    close

    Nm

    ≤120

    ≤120

    ≤120

    ≤120

    open

    Nm

    ≤120

    ≤120

    ≤120

    ≤120

    Fuse switch disconnector, with A type double springs operating and energy-stored mechanism

    Energy-stored and close

    Nm

    ≤120

    ≤120

    ≤120

    ≤120

    open

    Nm

    ≤3

    ≤3

    ≤3

    ≤3

    Shaft corner

    degree

    120

    120

    120

    120

    Close speed

    m/s

    ≥6

    ≥6

    ≥6

    ≥6

    Open speed

    m/s

    4.5~6

    4.5~6

    4.5~6

    4.5~6

    Three phase close synchronism

    m/s

    ≤3

    ≤3

    ≤3

    ≤3

    Mechanical life

    time

    ≥2000

    ≥2000

    ≥2000

    ≥2000

    Remark:(1) NALF36 can only equipped with A type double springs operating and energy-stored mechanism. (2) According to the actual requirements, different operation modes like manual, manual with shunt tripping, electrical and electrical shunt tripping are available.

     

    E Type Switch Disconnector with Earthing Switch

    Rated voltage

    KV

    12(IEC)

    12(GB)

    24(GB)

    40.5(GB)

    Rated short circuit making current(peak)

    KA

    40

    40

    40

    40

    Rated peak withstand current

    KA

    40

    40

    40

    40

    2S short time withstand current

    KA

    16

    16

    16

    16

    Rated active load switch breaking current

    A

    630

    630

    1250

    630

    630

    Rated closed-loop breaking current

    A

    630

    630

    1250

    630

    630

    Rated cable charging breaking current

    A

    10

    10

    16

    21

    Main circuit resistance

    μΩ

    ≤105

    ≤105

    ≤105

    ≤105

    Phase distance (center distance)

    mm

    150/170/210

    210

    170/210

    275

    360

    Rated current of fuse switch disconnector

    A

    100

    100

    100

    100

    Maximum fuse current of the fuse switch disconnector

    A

    125

    125

    125

    50

    Main circuit resistance the fuse switch disconnector

    μΩ

    ≤250

    ≤250

    ≤250

    ≤250

    Rated short circuit breaking current of fuse switch disconnector

    KA

    31.5

    31.5

    31.5

    31.5

    Rated short circuit making current of fuse switch disconnector (peak)

    A

    80

    80

    80

    80

    Rated transfer current of fuse switch disconnector

    A

    1200

    1200

    800

    200

    Closing operating torque

    Nm

    ≤120

    ≤120

    ≤120

    -≤120

    Opening operating torque

    Nm

    ≤120

    ≤120

    ≤120

    ≤120

    Mechanical life

    time

    ≥2000

    ≥2000

    ≥2000

    ≥2000

    Phase distance (center distance)

    mm

    150/170/210

    210

    170/210

    275

    360

     
     
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