Guangdong Sihui Inductive Voltage Transformer

一、Service Conditions :

1. Ambient air temperature: maximum 40℃, minimum -40℃, average value of the ambient air temperature does not exceed 30℃ measured during a period of 24h.
2.  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’ requriments).
3.  The average value of the relative humidity does not exceed 95% at 25℃ measured during a period of one month.
4.  The maximum wind speed does not exceed 34m/s.
5.  Eerthquake intensity does not exceed 8 degree.
6.  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、Technical Parameters:

1. Rated frequency is 50Hz or 60Hz
2. Rated secondary voltage:
3. Measuring secondary winding is 0.1/√3kV, 0.11/√3kV, 0.12/√3kV or 0.15/√3kV
4. Protective secondary winding is 0.1/√3kV, 0.11/√3kV, 0.12/√3kV or 0.15/√3kV
5. Residual voltage winding is 0.1kV, 0.11kV, 0.12kV, 0.15kV
6. Rated operating pressure of gas SF6 is 0.40MPa (0.50 MPa only for 500 kV); Minimun operating pressure of the gas SF6 is 0.35MPa (0.45 MPa only for 500 kV).

三、Rated output and relative accuracy class (cosφ=0.8 lag) please see table 1

Table 1

 Note: Each thermal limit burden for protective winding is 2000VA.

四、Arcing distance and creepage distance of outer insulation please see table 2.

五、Insulation requirements for the primaries please see table 3.

六、Mechanical requirements for the primary terminals please see table 4.

七、Dimensions of the voltage transformers

The outline and installation dimensions please see drawing 1, and the dimensions of the primary termanils please see table 5.

Drawing 1  JDQXF-□W outline and installation dimensions