Sihui Low Voltage to High Voltage Transformers

一、Service Conditions

a. Ambient air temperature: maximum +40℃, minimum -45℃, 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’ requriments).

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. Eerthquake 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. Rated frequency: 50Hz or 60Hz
2. Rated primary voltage:66/√3, 110/√3, 132/√3, 150/√3 kV
3. Secondary voltage for metering:100/√3, 110/√3, 120/√3, 150/√3V                      
4. Secondary voltage for protection: 100/√3, 110/√3, 120/√3, 150/√3V
5. Residual winding voltage: 100,110,120,150 V
6. Accuracy class for metering: 0.2,0.5
7. Accuracy class for protction: 3P,6P
8. Accuracy class for residual winding: 3P,6P
9. Rated output for metering: 50,100,150,200 VA
10. Rated output for protaction: 50,100,150,200 VA
11. Rated output for residual winding: 100,200,300 VA
12. Thermal limited burden: 1000VA
13. Ambient air temperature: -45 ℃~+40 ℃
14. Altitude: ≤1000m, if need to design exceed 1000m, please declare in the order.

Note:System earthing conditions: Non-effectively earthed neutral system and effectively earthed neutral system.

三、Arcing distance and creepage distance of outer insulation please see table 1.

四、Insulation requirements for the primaries please see table 2.

五、Mechanical requirements for the primary terminals please see table 3.

六、Dimensions Of The Inductive Voltage Transformer

1.The outline and installation dimensions please see drawing 1.

2. The dimensions of the primary termanils please see table 4.

Notes: There may be any change of the dimensions for the inductive voltage transformer because of renewing, the clients must basis on the updated drawings.