Universal circuit breaker

Short Description:

    Universal circuit breaker Normal Operation and Installation Conditions Ambient temperature: -5°C – +40°C, and the average temperature is not exceeding +35°C within 24 h; Attitude: Not higher than 2CX)0 m. The capacity should be decreased if the altitude is above 2000m Humidity: When the ambient air temperature is +40 °C, the relative humidity of the air shall not be higher than 60%, a higher relative humidity is allowed at a lower temperature. For example, the rel...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

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    Universal circuit breaker Normal Operation and Installation Conditions

    Ambient temperature: -5°C – +40°C, and the average temperature is not exceeding +35°C within 24 h;

    Attitude: Not higher than 2CX)0 m. The capacity should be decreased if the altitude is above 2000m

    • Humidity: When the ambient air temperature is +40 °C, the relative humidity of the air shall not be higher than 60%, a higher relative
      • humidity is allowed at a lower temperature. For example, the relative humidity should be 90% when temperature is 20°C. Special measures should be adopted for the condensation occasionally produced due to temperature change.

    Pollution degree: 3

    The circuit breaker can be used In electromagnetic environment A Installing category: IV for main circuit; III for other auxiliary and control circuits;

    The vertical gradient: no more than 5°

    Mounting Ambient: There must be no explosive medium, no gas which would corrode metal or any conducting dust which wouid destroy the insulation;

    • The circuit breakers should be installed in the compartment of switchgear cabinet with doorframes fixed additionally. Protection grade is up to IP40.

    Installation

    Follovviog items to be checked before installation

    Check the label plate on the breaker panel to see if it conforms to the specifications of the ordered goods Rated current;

    Voltage and time delay of under voltage release;

    Voltage of shunt retease;

    Vottage of closing coil;

    Voltage of motorized operating mechanism.

    Before installation, operation, maintenance and inspection, you shall read this manua), and consult the manufacturer for questions if any. Preparations before installation

    Before the breaker i$ installed, check the Insulation resistance of the breaker by using a 1CXX3V megohmmeter according to regulations; when the surrounding media temperature is                      and the relative humidity is 5%-70%. the insulation resistance shall not be less than 20 megohm.

    The place with the insulation re^stance to be tested includes: the place between various phases and between varioiis phases and the frame when the breaker is closed; the place between in-ar>d out-iines of various phases when the breaker is switched off.

    Installation of the fixed type breaker

    Place the breaker into tf>e distribution cabinet, and fasten it by using 4 pieces of M6 {lnm=1600 ^ or M10 (Inm=3200 A or above) bolts and washers; the breaker shall be installed stably with no d=additional mechanical stress to avcrid damage of the breaker or bad contact of the main bus bar and the secondary circuit. After the work is completed, mount the body into the draw-out socket.

    The specification of the wiring copper bars for the primal circuit of Ihe breaker shall meet the copper bar specification used under the conditions of conventional heating in IEC60947-2.

    The breaker shall be grounded substantially Power loss

    Power loss is the total loss measured wt>en the breaker is charged with the rated current

    Breaker type

    Rated current W

    Withdrawable (w)

    Fixed type (w)

    630

    24

    15

    800

    39

    25

    1000

    61

    40

    SMW8-2000

    1250

    87

    54

    1600

    128

    64

    2000

    160

    150

    80

    2000

    80

    2500

    180

    100

    2900

    230

    250

    120

    SMW8-3200

    3200

    130

    4000/3P

    270

    -

    4000/4P

    290

    -

    SMW8-6300

    5000

    6300

    330

    360

    The data and parameters in the above technical docunentation result from tests and theoretical calcuiation, and can only bu used as a general type selection guide. Tbey cannot replace industhai pratcai experience or proof test.

     

     

     

     


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