Prefabricated Transformer Substation

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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