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    Vd412.06.13e GTP 1vyn400990-009

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    Jatupol Pongsirisart
    This document provides the guaranteed technical particulars of a 12kV vacuum circuit breaker type VD4. It lists 35 specifications such as: 1) The rated voltage is 12kV at 50Hz. 2) The short circuit breaking capacity is 13.1kA for 3 seconds. 3) The rated operating duty is O-0.3 sec CO-3 min CO. 4) The CB can perform up to 10,000 operations at no load and 5,000 operations at 100% rated current.

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    Vd412.06.13e GTP 1vyn400990-009

    Uploaded by

    Jatupol Pongsirisart
    53 views5 pages
    This document provides the guaranteed technical particulars of a 12kV vacuum circuit breaker type VD4. It lists 35 specifications such as: 1) The rated voltage is 12kV at 50Hz. 2) The short circuit breaking capacity is 13.1kA for 3 seconds. 3) The rated operating duty is O-0.3 sec CO-3 min CO. 4) The CB can perform up to 10,000 operations at no load and 5,000 operations at 100% rated current.

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    VD412.06.13E GTP 1VYN400990-009

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    This document provides the guaranteed technical particulars of a 12kV vacuum circuit breaker type VD4. It lists 35 specifications such as: 1) The rated voltage is 12kV at 50Hz. 2) The short circuit breaking capacity is 13.1kA for 3 seconds. 3) The rated operating duty is O-0.3 sec CO-3 min CO. 4) The CB can perform up to 10,000 operations at no load and 5,000 operations at 100% rated current.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    53 views5 pages

    Vd412.06.13e GTP 1vyn400990-009

    Uploaded by

    Jatupol Pongsirisart
    This document provides the guaranteed technical particulars of a 12kV vacuum circuit breaker type VD4. It lists 35 specifications such as: 1) The rated voltage is 12kV at 50Hz. 2) The short circuit breaking capacity is 13.1kA for 3 seconds. 3) The rated operating duty is O-0.3 sec CO-3 min CO. 4) The CB can perform up to 10,000 operations at no load and 5,000 operations at 100% rated current.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 5

    GUARANTEED TECHNICAL PARTICULARS PAGE: 1 1VYN400990-009

    12kV VACUUM CIRCUIT BREAKER TYPE VD4


    VD4 12.06.13E CONTD: 2 REV: 00
    PREPARED BY CHECKED BY APPROVED BY YEAR/WEEK
    MVB PPD SD 01/05

    RATING AS PER STANDARD: IEC 56 VD4.12.06.13E

    1 ) Rated Voltage & Frequency 12kV, 50Hz

    2) Current Rating
    a) Continuous rating open erection 800 Amps
    b) Continuous rating in self ventilated 800 Amps
    cubicle
    c) Short time current 3 Sec. 13.1 kA

    3) Rated Ambient Temperature 40°C

    4) Maximum rise of temperature over 65°C


    reference ambient for current rating at 40°C

    5) Derating factor for 50 °C ambient 0.8


    temperature

    6) Rated Operating duty O - 0.3 sec, CO - 3 min. CO

    7) Breaking capacity based on duty cycle


    (as per clause 6)
    a) Symmetrical at rated voltage 13.1kA
    b) Percentage DC component 28 - 40%

    8) Transient recovery voltage


    a) Rate of rise at 12kV As per IEC 56
    b) Peak Voltage at l2kV As per IEC 56

    9) Total travel of the Mechanism 12 mm

    10) Total length of break per pole 8 mm


    GUARANTEED TECHNICAL PARTICULARS PAGE: 2 1VYN400990-009
    12kV VACUUM CIRCUIT BREAKER TYPE VD4
    VD4 12.06.13E CONTD: 3 REV: 00
    PREPARED BY CHECKED BY APPROVED BY YEAR/WEEK
    MVB PPD SD 01/05

    RATING AS PER STANDARD: IEC 56 VD4.12.06.13E

    11 ) Rate of contact travel


    a ) At tripping 1.1 - 2.45 m/s
    b) At closing 0.6 - 1 .2 m/s

    12) Type of special device, if any, used to None


    limit the rate of restriking voltage

    13) Type of contacts Spiral electrodes Butt type

    14) Material of contacts Copper Chromium

    15) Contact pressure at no load 2200 N

    16) Insulation level of CB


    a) One minute power frequency 28kV
    withstand voltage
    b) Impulse voltage withstand with 75kVp
    1.2/50 micro second wave shape

    17) Minimum clearance in air

    a) Between phase 95 mm
    b) Between live parts & earth . 110 mm
    c) Center distance between phases 150 mm
    GUARANTEED TECHNICAL PARTICULARS PAGE: 3 1VYN400990-009
    12kV VACUUM CIRCUIT BREAKER TYPE VD4
    VD4 12.06.13E CONTD: 4 REV: 00
    PREPARED BY CHECKED BY APPROVED BY YEAR/WEEK
    MVB PPD SD 01/05

    RATING AS PER STANDARD: IEC 56 VD4.12.06.13E

    18) Whether CB is designed to close and latch To close and latch


    on making or fitted with making current
    release

    19) Whether CB is trip free or fixed trip Trip free

    c) If trip free, is it completely trip free Yes


    under every method of closing (except
    manual closing)

    20) Type of operating mechanism Spring wound stored energy


    mechanism
    Manual

    e) Motor (Optional) Spring wound by motor (optional)


    f) No. of CB operations stored O-C-O

    21 ) Spring charging motor Optional


    a) Rating 150W
    b) Rated voltage 110 V DC, 220 V DC & 230 V AC
    85 to 110%
    c) Voltage variation 15 seconds
    d) Time required to charge the springs
    completely at rated voltage

    22) Method of closing


    a) Normal Electromagnet
    b) Manual Closing Provided
    GUARANTEED TECHNICAL PARTICULARS PAGE: 4 1VYN400990-009
    12kV VACUUM CIRCUIT BREAKER TYPE VD4
    VD4 12.06.13E CONTD: 5 REV: 00
    PREPARED BY CHECKED BY APPROVED BY YEAR/WEEK
    MVB PPD SD 01/05

    RATING AS PER STANDARD: IEC 56 VD4.12.06.13E

    23) Type of closing mechanism -- Stored energy spring mechanism -

    24) Closing coil details

    a) Rated voltage -- As per clients requirement -


    b) Voltage variation 85 to 110 %
    c) Power required at rated voltage 180 W

    25) Method of tripping


    a) Normal Electromagnet
    b) Manual tripping Provided
    c) Emergency Provided with Panel

    26) Type of tripping mechanism -- Stored energy spring mechanism -

    27) Tripping coil details


    a) Rated voltage -- As per client's requirement -
    b) Voltage variation 70 to 110 %
    c) Power required at rated voltage 180 W

    28) Arc duration


    a) Arcing time at 100% breaking < 12-15 ms
    capacity, max.
    b) Opening time 35 to 55 ms
    c) Total break time at 100% breaking
    capacity, 50 to 60 ms

    29) Closing time, 50 to 70 ms


    GUARANTEED TECHNICAL PARTICULARS PAGE: 5 1VYN400990-009
    12kV VACUUM CIRCUIT BREAKER TYPE VD4
    VD4 12.06.13E CONTD: -- REV: 00
    PREPARED BY CHECKED BY APPROVED BY YEAR/WEEK
    MVB PPD SD 01/05

    RATING AS PER STANDARD: IEC 56 VD4.12.06.13E

    30) No. of openings CB is capable of


    performing without inspection replacement
    of contacts or other main parts
    a) At no load or very low current 10000
    b) At 100% rated current app. 5000
    c) At 100% rated breaking current 100

    31 ) Auxiliary contacts
    a) N/O and N/C contacts provided 6 NO+6NC
    b) Whether convertible at site NO
    c) Breaking current DC and inductive
    circuit at 110 & 220 V DC respectively at 5 & 2 Amps.
    L/R = 25 ms
    d) Breaking current AC and P.F. = 0.7 at 10 A
    220 V AC

    32) Interlocks provided Yes


    (As per IEC requirements)

    33) CB operable in
    a) Test / Service position Yes
    b) In between Test and Service position No

    34) Weight of Circuit Breaker (Approx.) 110 Kgs

    35) Provision for slow closing for maintenance No


    purpose

    36) Rated Capacitive Breaking Current


    a) Nominal Current 0.8 x Rated Current
    b) Breaking Current 400 Amps.
    c) Making Current 16kA peak at 4.5k Hz Frequency
    .

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