Model Explanation

Features

Core

High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.

Coil

The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity.

In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.

Oil tank 

The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.

Normal service condition

Ambient air temperature

Maximum temperature: +40℃

Minimum temperature: -45℃

Average temperature of the warmest month: +30℃

The hottest annual average temperature: +20℃

Altitude: ≤ 1000m

Contamination class: III;

Seismic intensity: VIII

Power supply voltage waveform: approximately sinusoidal;

Note: If the above conditions are exceeded, please specify when ordering, for special consideration.

1、S(F)11 66kV Three Phase Oil Immersed Natural (Forced) Air Cooling Double Winding Off Circuit Tap Changing Power Transformer

Model	Rated Capacity(kVA)	Voltage(kV)	Vector Group	Impedance Voltage(%)	Total Weight (t)	Reference Dimensions(mm) L*W*H	No-load Loss (W)	Load Loss  (W)
S(F)11-6300/66	6300	Hig Voltage H.V.  35~38.5  ±2×2.5%  Low Voltage L.V.  3.15,3.3,6.3,  6.6,10.5	YNd11	9	20	4800*3900*4000	7.3	34.2
S(F)11-8000/66	8000				22	4900*4100*4200	8.9	40.5
S(F)11-10000/66	10000				25	5000*4300*4400	10.5	47.8
S(F)11-12500/66	12500				28	5100*4400*4500	12.4	56.8
S(F)11-16000/66	16000				30	5200*4600*4600	15	69.8
S(F)11-20000/66	20000				34	5300*4700*4800	17.6	84.6
S(F)11-25000/66	25000				41	5500*4700*5000	20.8	100
S(F)11-31500/66	31500				46	5600*4800*5200	24.6	120
S(F)11-40000/66	40000				57	5800*5000*5300	29.4	141
S(F)11-50000/66	50000				67	6000*5300*5500	35.2	167
S(F)11-63000/66	63000				73	6200*5600*5700	41.6	198

2、S(F)Z11 66kV Three Phase Oil Immersed Natural (Forced) Air Cooling Double Winding On Load Tap Changing Power Transformer

Model	Rated Capacity (kVA)	Voltage(kV)	Vector Group	Impedance Voltage(%)	Total Weight  (t)	Reference Dimensions (mm)  L*W*H	No-load Loss (W)	Load Loss (W)
S(F)11-6300/66	6300	High Voltage H.V. 35~38.5 ±2×2.5% Low Voltage L.V. 3.15,3.3,6.3, 6.6,10.5	YNd11	9~11	22	5600*3800*4000	8	34.2
S(F)11-8000/66	8000				24	5700*4000*4200	9.6	40.5
S(F)11-10000/66	10000				27	5800*4200*4400	11.3	47.8
S(F)11-12500/66	12500				30	5900*4300*4500	13.4	56.8
S(F)11-16000/66	16000				33	6000*4400*4600	16.1	69.8
S(F)11-20000/66	20000				36	6100*4500*4800	19.2	84.6
S(F)11-25000/66	25000				43	6500*4500*5000	22.7	100
S(F)11-31500/66	31500				49	6600*4600*5200	26.9	120
S(F)11-40000/66	40000				59	6800*4800*5300	32.2	141
S(F)11-50000/66	50000			10~12	69	7000*5000*5500	38	167
S(F)11-63000/66	63000				75	7400*5300*5700	44.9	198