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Prefabricated Transformer Substation

Basic Info

Model No.:  VPTS

Product Description

Model NO.: VPTS Specification: IEC standard HS Code: 8504231100 Trademark: VILLE Origin: Ningbo China Service condition
1. Altitude: ≤ 1000m (above sea level)
2. Ambient temperature: Max. 40C Min. -25C
Max. Monthly average temperature: ≤ 35C
Max. Yearly average temperature: ≤ 25C
3. Relative humidity: Daily average value≤ 95%, monthly average value≤ 90%
4. Max. Daily difference in temperature: 25C
5. Sunlight intensity: 0.1W/CM2 (wind speed 0.5M/S);
6. Outdoor wind speed: ≤ 35m/s;
7. Pollution grade: Grade III;
8. Rain proof grade: Grade 3;
9. The gradient on installation spot shall be not more than 3° ;
10. Ability of anti-earthquake: Horizontal acceleration of ground surface is 0.2g
Vertical acceleration of ground surface is 0.1g;
11. Installation spot: The spot should has no fire/explosion danger/serious pollution/chemical corrosion and exquisite shake.
Customer should negotiate with manufacturer if the service condition is different from above.

Items Unit Parameters
High Voltage Part Rated voltage kV 12
Rated frequency Hz 50
Rated current of main busbar A 630
1mm power frequency withstand voltage (to earth and between phases/disconnecting fracture) kV 42/48
Lightning impulse withstand voltage (to earth and between phases/disconnecting fracture) kV 75/85
Rated short time withstand current kA/s 25/2
Rated peak withstand current kA 63
Rated short time making current kA 50
Rated transfer current A 1500
Breaking current of fuse kA 31.5         40
Low Voltage Part Rated voltage V 400
Rated current of main circuit A 100-4000
Rated limiting short circuit breaking ability kA 80
Rated operating short circuit breaking ability kA 50 (65)
Rated short time withstand current kA/1s 50 (65)
Branch current, compensating capacity According to requirements of users
Transformer Rated capacity kVA 30-2000
Impedance voltage % 4            4.5
Tapping range % ±2×2.5     ±5
Connection symbol Y, yn0   D, yn11
 Case Protection level of enclosure                      IP23
Sound level   dB                    ≤50

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