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Is specialized in designing, manufacturing for power transformers ,furnace transformers and reactor.

Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 1
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 2
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 3
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 4
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 5
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 6
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 1
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 2
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 3
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 4
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 5
Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 6

Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6

The iron core adopts cold-rolled crystal-oriented silicon steel plate 30Z140 with high quality, low-loss, and no time effect, sheared by Geroge line and with no burr. 1.2 Iron core adopts pulling board structure, the upper and down yoke is clamped by board, to form the frame structure. The iron core adopts advanced lamination process, which effectively controls the no-load loss and electro-magnetic noise.

 

Winding adopts mature structure, which ensure the reliability of transformer operation. The insulation power field intensity between turns shall be controlled no greater than 1.6kV/mm.

 

Model NO.: SFSZ10-25000/110

Cooling Method:Oil-immersed Type Transformer

Winding Type: Two-winding Transformer

5.0
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    BASIC INFO.

    Model NO. SFSZ10-25000/110 Rated Power Definitionwer 25000kVA
    Cooling Method Oil-immersed Type Transformer Tap Changer Mr or Hm China
    Winding Type Two-winding Transformer Vector Group Yn, D11
    CertificationI SO9001-2000, ISO9001, CCC Transport Package Wooden Cases and Main Body Nude Packing
    Usage Combined Transformer, Power Transformer, Three Phase Specification IEC Standard
    Frequency Characteristics High Frequency Trademark VilLE
    Shape of Core Ring Origin China
    Brand Ville HS Code 8504231200
    Test Certification CQC Transformer Test Production Capacity 1set/6monthes

    STRUCTURE CHARACTERISTIC

    Each component  of transformer shall be prefabricated once in manufacture factory, marked, to ensure the smooth procedure of site assembly. Before Ex-factory, inner core shall be check, and clean the fifth in transformer.

    Iron core & Winding

    Iron core
    1. 1The iron core adopts cold-rolled crystal-oriented silicon steel plate 30Z140 with high quality, low-loss, and no time effect, sheared by Geroge line and with no burr. 1.2 Iron core adopts pulling board structure, the upper and down yoke is clamped by board, to form the frame structure. The iron core adopts advanced lamination process, which effectively controls the no-load loss and electro-magnetic noise.

    Winding
    1. Winding adopts mature structure, which ensure the reliability of transformer operation.
    2. The insulation power field intensity between turns shall be controlled no greater than 1.6kV/mm.

    5 (11)
    4 (6)

    BODY & LEADING WIRE

    BODY

    1. Body adopts mature insulation structure, and strictly guarantee the main axial insulation margin.

    2. Body mostly adopt multi-coil whole assembly, processed in constant voltage and evaporation, which made

    coil shrink evenly and with less rebounce, and enhance the electric strength and mechanical strength.

    3. Adopt laminating wood board or thermal shaped insulation cardboard. Pressed tightly with pin, which ensure the winding is constantly pressed tightly. 


    LEADING WIRE

    1. The layout of all leading wire is reasonable, which guarantees the enough electric distance and mechanical

    strenth. 

    2. All leading wire is cirlulized ,which guarantee the reliable wild or prize connection. 

    Oil tank
    ◎  Oil tank adopts structure of flat top, bell jar type, which add the mechanical strength of oil tank and also make the appearance beautiful and graceful, site installation tend to be more convenient.
    ◎  Pipeline with gas relay such as the oil tube and bushing hoist support on top of oil tank is with hoist gradient, to facilitate the gas in transformer flow to gas relay.
    ◎  Vacuum oiling is adopted, there is no leakage and permanent distortion in the following test. vacuum- pumping :759mmHg load voltage test: bear 2 times the oil pressure of oil conservator oil surface for 24 hours.
    ◎  The structure of transformer is convenient for disassembly and change of bushing and porcelain element.
    ◎  The oil drip valve is set on the bottom of oil tank, sampling valve is set in the middle.
    ◎  Collective gas connecting tube is fixed on the bushing hoist support.
    ◎  Transformer is of full-sealed structure, the upper and down oil tanks are required to welded fully. 

    Oil conservation tank 
    ◎  Adopt capsule type, finger type oil level indicator oil conservation tank. 
    ◎  The structure is convenient for internal cleaning, the capacity can ensure no oil overflow in 40 ambient temperature with full load, and oil shall be seen from oil level indicator before put into operation in -25.
    ◎  Oil conservation tank is equipped with oil-sealed moisture absorber. 

    Safety protection device:
    ◎  Gas relay is fixed in transformer, the standard complies with ZBK41004-89Gas relay.
    ◎  There is enough and reliable pressure release device, and matched with oil spray pipe, the direction of oil spraying is downward. 

    Oil temperature measuring device
    ◎  There is pipe support of mercury thermometer, which is  set on the top of oil tank.
    ◎  There is temperature controller,  the accuracy of thermometer complies with the related standard. Quantity and technical requirement shall as per tender document. 

    Each component  of transformer shall be prefabricated once in manufacture factory, marked, to ensure the smooth procedure of site assembly. Before Ex-factory, inner core shall be check, and clean the fifth in transformer.

    TECHNICAL PARAMETERS

    25000kVA 115KV 38.5KV Dual-winding Power Transformer with on load tap changer

    Rated power, kVA-25000

    Rated voltage, kV VN - 115

    Rated voltage, kV NN - 6,6

    Idle speed loss(Ro), W- 120 two winding;

    Cooling:ONAN/ONAF;

    Rated voltage ratio:115±9×1.78%/6.6

    Winding connection diagram and group - Un/Un/D-0-11 (equal to YNd11);

    Short-circuit losses (Rc.h.), W-140 kW No-load current (1x. x.),% - 0.2%

    Short circuit voltage IR),% - 10.5 Oil weight, kg - 11050 Total weight, kg - 46800 Rated

    10007 (2)
    Connection group yn,d11 Lmpedance(%) 10.5
    Winding combination H-L Weight of active part(kg) Around 46.3ton
    No-load current(%) 0.5 Transport weight(kg) Around 53.2 ton(filling with nitrogen)
    No-load loss(kW) 26.2 Transport dimension (L W H mm) 6920x4320x5310
    On-load loss(kW ) 142 Capacity 25000kva

    PACKING AND SHIPPING

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    Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 11
    COMPANY STRENGTH
    Our in-house designers and engineers have produced countless great designs for customers from different industries
    Three-Winding Load Tapping Power Transformer 25mva 115kv 6.6 12
    COMPANY STRENGTH
    Our in-house designers and engineers have produced countless great designs for customers from different industries
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    As a professional power transformer manufacturer with 20 years of experiences, NINGBO VILLE ENTERPRISE is a combination of Transformer R&D center, production, sales and after sales service, possesses of strong technical strength and excellent manufacturing equipments, as well as modern Office facilities.
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    Contact person:  GREEN HSU
    Contact number:  +86-13906684456 / +86-13867838839
    WhatsApp:008613867838839 / 008613906684456

    Add: Fl 6, No.C12 Building, Lane 299 Guanghua Rd, Ningbo R&D Park,Ningbo Hi-Tech Zone,China, 315040

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