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    Gas Insulation Industrial Station Serve Voltage Transformer SSVT Free-oil Manufacturer factory ISO9001 Station Service Voltage Transformers

    PRODUCT INTRODUCTION

    Single-phase Station Service Voltage Transformers gas insulated. 

    PRODUCT DETAILS

    It is a single-phase power transformer which the insulation material is SF6 gas. The bushing of the power transformer is made by silicon rubber or porcelain (for standalone installation). There are some aluminium electrodes inside the power transformer, to improve the electric field distribution inside. There is a pressure relief device at the top of the power transformer, when the pressure is more than 0.8MPa (1.0 MPa only for 500 kV) if the power transformer is discharge inside, the relief device will be broken to release the pressure and send an alarm information. There is a SF6 density monitor fix at the base, it can indicate the SF6 pressure which inside the power transformer (its indicated value is the SF6 pressure at 20℃), and it will provide an information when the SF6 pressure is drop down to the minimum service pressure of the power transformer, to remind the user replenish the SF6 gas to the rated pressure. The secondary terminals block is casted by epoxy resin, the frame of the secondary terminals box is a seal structure, it suits for outdoor. Outline dimensions drawing and structure shown in Figure 1.

    Sihu Distribution Power Voltage Transformer

    一、Service Conditions

    a. Ambient air temperature: maximum 40℃, minimum -40℃, average value of the ambient air temperature does not exceed 30℃ measured during a period of 24h.

    b. Altitude: The altitude does not exceed 1000m (this is the routine requirement, if there is any different requirement, we can provide the products with 2000m, 3000m, 4000m or 5000m altitude according to the clients’ requirements).

    c. The average value of the relative humidity does not exceed 95% at 25℃ measured during a period of one month.

    d. The maximum wind speed does not exceed 34m/s.

    e. Earthquake intensity does not exceed 8 degree.

    f. There have to be no gas that may seriously affect the insulation and conductive ability of electric equipments, steam, ash, salt, chemical deposit, pollution and corrosive or explosive material.

    二、Main Technical Parameters.

    1. Table 1.

    Rated voltage (kV)

    72.5

    126

    145

    170

    252

    363

    420

    550

    power-frequency withstand voltage (r.m.s) (kV)

    140

    230

    275

    325

    460

    510

    630

    680

    Rated lightning impulse withstand voltage (peak)   (kV)

    325

    550

    650

    750

    1050

    1175

    1425

    1550

    Rated switching impulse withstand voltage (peak)   (kV)

    950

    1050

    1175

    Rated   output( kVA)

    MAX 333

    Secondary voltage   

    110~400V,7200~14400V

    Rated voltage factor

    1.5/30s or others

    Rate frequency (Hz)

    50/60

    Creepage distance( mm/kV)

    25~31 or more high

    Insulation level  

    E/B

    Accuracy class for metering

    0.2-0.5-1.0*

    Accuracy class for protection

    3P-6P*

    2. Table 2.

    Table 1Rated   voltage

     (kV)

    Rated output

     (kVA)

    H

    (mm)

    W1

    (mm)

    W2

    (mm)

    D

    (mm)

    72.5

    25

    1650

    400

    400

    20

    50

    1650

    400

    400

    20

    75

    1780

    600

    600

    24

    100

    1922

    600

    600

    24

    125

    1922

    600

    600

    24

    126

    25

    2005

    600

    600

    24

    50

    2005

    600

    600

    24

    75

    2272

    600

    600

    24

    100

    2435

    600

    600

    24

    125

    2435

    600

    600

    24

    145

    25

    2005

    600

    600

    24

    50

    2005

    600

    600

    24

    75

    2272

    600

    600

    24

    100

    2435

    600

    600

    24

    125

    2435

    600

    600

    24

    170

    25

    2125

    600

    600

    24

    50

    2125

    600

    600

    24

    75

    2375

    600

    600

    24

    100

    2568

    600

    600

    24

    125

    2568

    600

    600

    24

    252

    25

    3670

    600

    600

    24

    50

    3670

    600

    600

    24

    75

    3822

    600

    600

    24

    100

    3982

    600

    600

    24

    125

    3982

    600

    600

    24

    363

    25

    4450

    600

    600

    24

    50

    4522

    600

    600

    24

    75

    4630

    600

    600

    24

    100

    4730

    600

    600

    24

    125

    4730

    600

    600

    24

    420

    25

    4920

    600

    600

    24

    50

    4920

    600

    600

    24

    75

    4920

    680

    680

    32

    100

    4920

    680

    680

    32

    125

    4920

    680

    680

    32

    550

    25

    6220

    600

    600

    24

    50

    6220

    600

    600

    24

    75

    6438

    680

    680

    32

    100

    6550

    680

    680

    32

    125

    6550

    680

    680

    32

    333

    6550

    920

    920

    32

    三、Outline dimensions drawing and structure.

     

    The demonstration of the power voltage transformer

     

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