TZN12(68)-12 series TZN12(68)-40.5 series Indoor high voltage vacuum circuit breaker

Short Description:


  • Port: tianjing
  • Supply Ability: TENPRO
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    Product features

    ·Strengthen insulation

    TZN12 (68)-12 series

    TZN12 (68)-40.5 series

    Indoor high voltage vacuum circuit breaker

    Outline

    TZN12 (68) -12 series vacuum circuit breakers are indoor high voltage switchgear with rated voltage of 12KV three-phase AC of 50Hz. It is the product that introducing of German Siemens technology. The operating mechanism of the circuit breaker is spring energy storage type. It can be operated by AC or DC, and can also be operated manually. It is suitable for the control or protection of transmission and distribution systems like power plants and substations, especially in places where important loads are cut off and frequently changed.

    TZN12 (68)-40.5 vacuum circuit breaker can match the main switch of TKYN-40.5, TKYN1-35, and TGBC-35 series switchgear. The circuit breaker is mounted on the handcart in the switchgear as a movable unit. Meanwhile, the circuit breaker can also be installed in the TXGN-40.5 switchgear for fixed installation. The circuit breaker body is integrated with the switch: special spring energy storage operating mechanism, and can be operated by AC, DC energy storage or manual operation.

    Main technical parameters

    Serial No.

    Name

    Unit

    Data

    I

    II

    III

    I

    II

    1

    rated voltage

    KA

    12

    12

    12

    40.5

    40.5

    2

    rated current

    A

    1250

    1600

    2000

    1600

    2000

    3

    rated short-circuit on-off current

    KA

    31.5

    31.5

    31.5

    25

    31.5

    4

    dynamic stable current (peak)

    KA

    100

    100

    100

     

     

    5

    4s thermal stability current (50KA is 3s)

    KA

    31.5

    31.5

    31.5

    25

    25

    6

    rated short-circuit closing current (peak)

    KA

    100

    100

    100

    80

    80

    7

    rated short circuit current breaking times

    times

    50

    20

    8

    rated operation sequence

     

    opening0.3s-closing and opening-180s-closing and opening

    9

    rated lightning impulse withstand voltage (full wave)

    kV

    75

    185

    10

    rated short-time frequency withstand voltage (1min)

    kV

    42

    95

    11

    closing time

    ms

    ≤75

    50~85

    12

    opening time

    ms

    ≤60(50)

    40~85

    13

    mechanical life

    times

    20000(1~1V)

    10000(V~X)

    120000

    14

    rated current breaking times

    times

    20000(1~1V)

    10000(V~X)

    20

    15

    energy storage motor power

    W

    275

    20

    16

    rated voltage of energy storage motor

    V

    110, 220

    220, 110

    17

    energy storage time

    S

    ≤15

    ≤15

    18

    closing electromagnet rated voltage

    V

    110, 220

    220, 110

    19

    opening electromagnet rated voltage

    V

    110, 220

    220, 110

    20

    rated voltage of energy storage type shunt release

    V

    110, 220

    220, 110

    21

    closing interlock rated voltage

    V

    110, 220

    220, 110

    22

    voltage loss release rated voltage

    V

    110, 220

    220, 110

    23

    voltage loss release rated voltage

    A

    5

    5

    24

    auxiliary switch rated current

    A

    AC10 DC 10

    DC 10

    25

    contact travel

    mm

    11±1

    11±1

    20±2

    26

    over-travel of the contact

    mm

    8±2

    8±2

    5±1

    27

    closing speed

    m/s

    0.6-1.8

    0.8-1.4

    28

    opening speed

    m/s

    1.0-1.8

    1.1-1.8

    29

    contact closing and tripping time

    ms

    ≤2

    ≤3

    30

    interphase center distance

    mm

    210 1.5(280±1.5)

    350±1.5

    31

    three – phase contact opening

    synchronization

    ms

    ≤2

    ≤2

    32

    Per phase loop resistance

    μΩ

    ≤35

    ≤45

     

     


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