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    R00 - 16-20MVA - 33-11kV - Datasheet

    Uploaded by

    dohamate
    This document provides specifications for a transformer, including: - Rated power of 16,000/20,000 kVA, with voltage ratios of 33/11 kV and cooling systems of ONAN/ONAF. - The core is made of cold rolled low loss material with core sheets cut at 45 degrees. Windings are concentric and made of copper. - The tank can withstand full vacuum and has radiators attached with shut-off valves. It has a bolted cover and gasket. - Accessories include bushings, an on-load tap changer, Buchholz relay, and oil temperature indicator. - Preliminary dimensions are a length of 6,500 mm, width

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    © All Rights Reserved
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    R00 - 16-20MVA - 33-11kV - Datasheet

    Uploaded by

    dohamate
    164 views3 pages
    This document provides specifications for a transformer, including: - Rated power of 16,000/20,000 kVA, with voltage ratios of 33/11 kV and cooling systems of ONAN/ONAF. - The core is made of cold rolled low loss material with core sheets cut at 45 degrees. Windings are concentric and made of copper. - The tank can withstand full vacuum and has radiators attached with shut-off valves. It has a bolted cover and gasket. - Accessories include bushings, an on-load tap changer, Buchholz relay, and oil temperature indicator. - Preliminary dimensions are a length of 6,500 mm, width

    Original Title

    R00_16-20MVA - 33-11kV_Datasheet

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    This document provides specifications for a transformer, including: - Rated power of 16,000/20,000 kVA, with voltage ratios of 33/11 kV and cooling systems of ONAN/ONAF. - The core is made of cold rolled low loss material with core sheets cut at 45 degrees. Windings are concentric and made of copper. - The tank can withstand full vacuum and has radiators attached with shut-off valves. It has a bolted cover and gasket. - Accessories include bushings, an on-load tap changer, Buchholz relay, and oil temperature indicator. - Preliminary dimensions are a length of 6,500 mm, width

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    164 views3 pages

    R00 - 16-20MVA - 33-11kV - Datasheet

    Uploaded by

    dohamate
    This document provides specifications for a transformer, including: - Rated power of 16,000/20,000 kVA, with voltage ratios of 33/11 kV and cooling systems of ONAN/ONAF. - The core is made of cold rolled low loss material with core sheets cut at 45 degrees. Windings are concentric and made of copper. - The tank can withstand full vacuum and has radiators attached with shut-off valves. It has a bolted cover and gasket. - Accessories include bushings, an on-load tap changer, Buchholz relay, and oil temperature indicator. - Preliminary dimensions are a length of 6,500 mm, width

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    S.p.A.

    BUDGET OFFER ONLY FOR DISCUSSION


    12Q1704200 Issued by RS
    20.09.2012 Rev. 00 Checked by PT
    TRANSFORMER DATASHEET

    A BB 1/3

    Reference n. 12Q1704200

    Rated Power [kVA] 16000 / 20000
    Cooling system ONAN /ONAF
    Voltage ratio [kV] 33 / 11


    Brief description of transformer

    Core

    Core is three limbs type, manufactured using cold rolled low losses material. Sheets are cutted at 45 and
    overlapped. Depending from core dimensions and design, core cooling channels are provided. Thickness of core
    sheets can be 0.30, 0.27 or 0.23mm, depending from material used.
    Top and bottom jokes are pressed by steel made core clamps. Upper and lower clamps are connected by tie
    rods. Core is insulated from core clamping system.

    Windings

    Windings are concentric type, made by high quality electrolytic copper. According to power, application and
    design, windings can be foil, multilayer (single strand or CTC conductor), helical or disc. Oil ducts between
    windings and conductors are provided in order to assure a proper cooling.

    Tank and conservator

    Tank is able to withstand full vacuum. Radiators are attached to the tank with shut off valves.

    Transformer cover is bolted. Active part is attached under transformer lid.
    Oil thight is assured by synthetic rubber gasket between tank and cover.

    Conservator contains two compartments, one for oil in the main tank and the other for the oil of the on load tap
    changer. Both compartments are provided with silicagel breather in order to avoid oil moisture contamination. Main
    tank is provided with n. 4 lifting hooks and n. 8 jacking lugs.

    Surface treatment

    Internal tank: painted with oil resistant coating.
    External tank: Painting cycle according to ISO 12944-5 C3-M.
    Radiators: Painting cycle according to ISO 12944-5 C3-M.
    All metallic parts are sandblasted before painting.

    Tap Changer

    Transformer is equipped with an on load tap changer on HV side.
    Tapping range i s 33 (+4;-12x1.25%) in 16 / 17 steps. Step voltage i s 1.25%.
    On load tap changer is in tank type with separate compartment for diverter switch. Tap changer is equipped
    with separate conservator and protective relay. Tap changer motor drive unit contains circuits for tap changer
    control and signals.



    S.p.A.
    BUDGET OFFER ONLY FOR DISCUSSION
    12Q1704200 Issued by RS
    20.09.2012 Rev. 00 Checked by PT
    TRANSFORMER DATASHEET

    A BB 2/3

    Main accessories


    - Primary side bushings 3x COMEM 52/1250A
    - Secondary side bushings 4x COMEM 24/2000A

    - Tap changer type On-load
    main accessories Tap changer conservator with silicagel
    breather
    Oil level indicator with n. 2 contacts
    Comem type
    protective relay

    - Buchholz relay with n. 2 contacts
    - Pressure Relief Device with n. 1 contact
    - Oil level indicator for main tank conservator with n. 2 contacts
    - Oil temperature indicator with n. 2 contacts
    - Silicagel breather
    - Filter valve
    - Oil drain valve
    - Oil sampling valves
    - Rating plate according IEC standard


    Supply Voltages

    - OLTC Motor 400VAC 50Hz 3ph
    - OLTC Control 110VAC 50Hz 1ph
    - Fans 400VAC 50Hz 1ph
    - Heaters 230VAC 50Hz 1ph


    Connecti ons

    - Primary side Air filled cable box, top mounted, bottom entry.
    - Secondary side Air filled cable box, top mounted, bottom entry.




    S.p.A.
    BUDGET OFFER ONLY FOR DISCUSSION
    12Q1704200 Issued by RS
    20.09.2012 Rev. 00 Checked by PT
    TRANSFORMER DATASHEET

    A BB 3/3

    Technical datasheet

    Rated data
    Rev. index
    Rated power [kVA] 16000 / 20000

    Cooling system ONAN / ONAF

    Voltage ratio [kV] 33 +4;-12 x1.25% / 11

    Vector group Dyn11


    Frequency [Hz] 50

    Type of flux voltage variation CFVV

    Insulation fluid
    Mineral oil
    Nynas Nytro Libra



    Environment


    Maximum ambient temperature [C] 50

    Top oil temperature rise [K] 55

    Average windings temperature rise [K] 50

    Hot spot temperature rise [K] 68

    Altitude [m] <1000

    Insulation class A

    Transformer location Outdoor


    Guaranteed values


    No load losses [W] 13000 +IEC tolerance

    Load losses at rated power nominal ratio at 20MVA [W] 130000 +IEC tolerance

    Short circuit impedance at 20MVA and nom voltage ratio [%] 12.5 IEC tolerance


    Insul ation levels

    HV HVN LV LVN
    Nominal voltage, Um [kV] 36 - 12 12
    Lightning impulse, LI [kV] 200 - 110 110
    Applied voltage, AC [kV] 70 - 28 28

    Bushings

    Rated voltage [kV] 52 - 24 24
    Rated current [A] 1250 - 2000 2000
    Lightning impulse [kV] 250 - 125 125
    Applied Voltage [kV] 95 - 50 50

    Prel iminary dimensions and weights

    Oil [kg] 8000
    Untanking mass [kg] 18000
    Total weight [kg] 35000

    Length [mm] 6500
    Width [mm] 4900
    Height [mm] 4700

    Documentation used to prepare the offer

    - No documentation has been considered


    Notes/Remarks
    - References to documents not listed above have not been considered.
    - Only routine tests according to IEC Standard are included in this offer. All other tests will be quoted separately.
    - Penalty for transformers will be applied after IEC tolerances for all losses.
    - Only accessories specified above are included in this offer.
    - Cable glands, NER, CTs, AVR, RTCCP, etc are not included in this offer.
    - This is a budget quotation. It is not binding for ABB.

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