I. Product Description

220kV oil-immersed power transformer is the carefully designed, continuous improved new products, which is combined with existing successful technology and experiences at home and abroad. It has the characteristics of compact and reliable structure, low loss, low noise, excellent performance.

II. Product Features

◆ The core is made of high quality cold-rolled silicon steel sheet. Core binding adopts integrated pressurizing and PET banding technique. In the structural parts of iron core and the oil tank take reasonable measures to reduce the stray loss by magnetic shielding, which not only reduces the load loss, but also can effectively avoid the problem of local overheating of transformer inner as well as ensure the demand of low loss and low noise.

◆ The high and low voltage coil adopt oil cooling structure so as to guarantee the radiation of coil heat. High voltage regulation part has separated voltage regulation winding, whose ampere turns more balanced, effectively reduces the electric power at short circuit condition, and withstands high and sudden short circuit current.

◆ The assembly adopts oil vacuum technology, which reduce the transformer’s internal moisture to a minimum, at the same time to completely escape internal insulated gas and “air horn” in the bubbles, to make the oil soaked and insulated thoroughly. The spares of transformer are made of domestic high-quality and reputable products, which ensure the transformer’s overall use performance.

III. Scope of Application

The transform is suitable for power plant, substation and large industrial and mining enterprises.

IV. Technical Parameters

1. 35kV S11 Series Transformer

Rated Capacity (KVA)	Rated Voltage (KV)		Short-Circuit Impedance (%)	Connection Symbol	No-Load Loss (W)	Load Loss(W)	No-Load Current (%)	Weight(Kg)			Outline Dimension (L×W×H,mm)	Installation Dimensions (mm)
	High-Voltage	Low-Voltage						Oil	Body	Outline
50	35	0.4	6.5	Dyn11/Yyn0	0.17	1.21/1.15	2.0	345	250	800	1090×940×1870	660
100					0.23	2.02/1.92	1.8	400	540	1150	1130*1140*1980	660
125					0.27	2.38/2.26	1.7	450	570	1300	1250*1270*2010	660
160					0.29	2.83/2.69	1.6	530	620	1555	1290*1300*2030	660
200					0.35	3.33/3.17	1.5	550	780	1650	1350*1320*1990	660
250					0.41	3.96/3.77	1.4	580	830	1720	1750*1150*2020	820
315					0.49	4.76/4.54	1.4	610	920	1850	1850*1210*2090	820
400					0.58	5.75/5.48	1.3	645	1015	2160	2060*1200*2260	820
500					0.69	6.92/6.59	1.2	750	1320	2620	2180*1250*2320	820
630					0.83	7.87	1.1	760	1550	2790	2200*1260*2430	820
800					0.98	9.41	1.0	980	1800	3800	2220*1350*2550	820
1000					1.15	11.55	1.0	1150	2300	4230	2450*1380*2580	820
1250					1.41	13.94	0.9	1230	2380	4480	2480*1600*2500	820
1600					1.70	16.68	0.8	1540	3050	5720	2650*1810*2850	1070
800	35	10.5 6.3 3.15	6.5	Yd11	0.98	9.41	1.0	980	1800	3800	2220*1350*2550	820
1000					1.15	11.55	1.0	1150	2300	4230	2450*1380*2580	820
1250					1.41	13.94	0.9	1230	2380	4480	2480*1600*2500	820
1600					1.70	16.68	0.8	1540	3050	5720	2650*1810*2850	1070
2000					2.18	18.39	0.7	1600	3150	6200	2700*1900*2880	1070
2500					2.56	19.67	0.6	1780	3670	7100	2830*2370*2850	1070
3150	35 38.5	10.5 6.3 3.15	7		3.04	23.09	0.56	1960	4930	8630	2905*2370*2960	1070
4000					3.62	27.36	0.56	2200	5100	9430	2900*2680*3190	1070
5000					4.32	31.38	0.48	3100	6300	11750	3000*2540*3200	1070
6300			7.5		5.25	35.06	0.48	2930	6900	12200	3350*2720*3200	1475
8000	35 38.5	11 10.5 6.6 6.3	7.5	YNd11	7.20	38.48	0.42	3000	8650	14600	3580*3220*3400	1475
10000					8.71	45.32	0.42	3750	9150	17050	3650*3400*3500	1475
12500			8		10.08	53.87	0.40	4200	12300	20050	3850*3300*3750	1475
16000					12.16	65.84	0.40	4800	14000	23900	3950*3000*3920	1475
20000					14.40	79.52	0.4	5850	17850	30250	4150*3800*4200	1475

Notes:

• 1. For transformers with a rated capacity below 500 KVA, the load loss value on the left side of the forward slash in the table applies to the Dyn11 connection group, while the value on the right side applies to the Yyn0 connection group.
• 2. Outline dimensions are for reference only; please refer to the outline drawing provided at the time of order.

2. 110KV S11 Series Three-Phase Double-Winding No-Load Voltage Regulation Power Transformer

Rated Capacity (KVA)	Voltage Combination and Tapping Range(KV)		Connection Symbol	No-load loss(KW)	Load loss(KW)	No-load Current(%)	Short-Circuit impedance(%)	Total Weight(KG)	Oil Weight(KG)	Outline Dimension (L×W×H mm)
	High-Voltage	Low-Voltage
6300	110±2×2.5% 121±2×2.5%	6.3 6.6 10.5 11	YNd11	7.5	34	0.77	10.5	23000	4700	3600*3680*4050
8000				8.9	43	0.77		25000	5800	3700*3880*4580
10000				10.6	50	0.72		25800	6300	3750*3900*4550
12500				12.5	60	0.72		28400	6500	3800*3950*4680
16000				15	73	0.67		34700	8200	4000*4050*4720
20000				17.6	89	0.67		37800	8600	4400*4090*4800
25000				20.8	105	0.62		40500	8900	4700*4120*4900
31500				24.6	126	0.60		48800	10500	4970*4150*5130
40000				29.4	148	0.56		57300	12000	5400*4250*5180
50000				35.2	184	0.52		64000	13500	6290*4270*5600
63000				41.6	222	0.48		74500	14800	6500*4700*5700

Notes:

• 1. -5% tapping position is the maximum current tapping.
• 2. No tapping structure shall be better choice with regard to step up transformer. If necessary tapping can be set up.

3. 110KV SS11 Series Three-Phase Three-Winding No-Load Voltage Regulation Power Transformer

Rated Capacity (KVA)	Voltage Combination and Tapping Range(KV)			Connection Symbol	No-load Loss(KW)	Load Loss(KW)	No-Load Current(%)	Short-Circuit Impedance(%)		Total Weight(KG)	Oil Weight(KG)	Outline Dimension (L×W×H mm)
	High-Voltage	Medium-Voltage	Low-Voltage					Up	Down
6300	110±2×2.5% 121±2×2.5%	35 37 38.5	6.3 6.6 10.5 11	YNyn0d11	9.0	45	0.82	(H-M): 17.5-18.5 (H-L): 10.5 (M-L): 6.5	(H-M): 10.5 (H-L): 17.5-18.5 (M-L): 6.5	30500	9100	5650*5250*4540
8000					10.6	53	0.78			32500	9600	5660*5340*4580
10000					12.6	63	0.74			35700	10100	5680*5360*4620
12500					14.7	74	0.70			39000	11200	5690*5410*4640
16000					18	90	0.66			46000	11700	5840*5450*4840
20000					21.1	106	0.65			52000	13900	5890*5480*4970
25000					24.5	126	0.60			57200	15200	6050*5660*5280
31500					29.4	149	0.60			68800	18200	6480*6040*5420
40000					34.9	180	0.55			78200	18800	6650*6090*5500
50000					41.5	214	0.55			84000	20500	6740*6120*5630
63000					49.3	257	0.50			90300	22700	6940*6250*5800

Notes:

• 1. The outline dimension and weight are only for reference, and dimension changes shall not be informed further. Drawing sheets confirmed in order placing are reliable.
• 2. The same series or same specification air-cooled transformer have the same parameters except weight and formal size.

4. 110KV SZ11 Series Three-Phase Double-Winding On-Load Voltage Regulation Power Transformer

Rated Capacity(KVA)	Voltage Combination and Tapping Range(KV)		Connection Symbol	No-load Loss(KW)	Load Loss(KW)	No-Load Current(%)	Short-Circuit impedance(%)	Total Weight(KG)	Oil Weight(KG)	Outline Dimension(L*W*H mm)
	High-Voltage	Low-Voltage
6300	110±8×1.25%	6.3 6.6 10.5 11	YNd11	8.0	34	0.80	10.5	26300	6500	4680*3800*4260
8000				9.6	43	0.80		27300	7000	4750*4400*4620
10000				11.4	50	0.74		28400	7350	4800*4420*4700
12500				13.5	60	0.74		35000	8600	4850*4460*4720
16000				16.2	73	0.69		38300	8700	5050*4600*4840
20000				19.2	89	0.69		42000	10700	5450*4600*4840
25000				22.7	105	0.64		51500	11500	5750*4660*4950
31500				27	126	0.64		56000	14100	6020*4680*5200
40000				32.3	148	0.58		688000	18300	6450*4780*5300
50000				38.2	184	0.58		74000	19500	7260*4800*5680
63000				45.5	222	0.52		83000	20600	7560*5260*5800

5. 110KV SSZ11 Series Three-Phase Three-Winding On-Load Voltage Regulation Power Transformer

Rated Capacity (KVA)	Voltage Combination and Tapping Range (KV)			Connection Symbol	No-Load Loss (KW)	Load Loss (KW)	No-Load Current (%)	Short-Circuit impedance (%)	Total Weight (KG)	Oil Weight (KG)	Outline Dimensions (L*W*H mm)
	High-Voltage	Medium-Voltage	Low-Voltage
6300	110±8×1.25%	35 37 38.5	6.3 6.6 10.5 11	YNyn0d11	9.6	45	0.95	(H-M): 10.5 (H-L): 17.5-18.5 (M-L): 6.5	34700	10700	6650*5280*4550
8000					11.5	53	0.95		35700	11200	6670*5380*4580
10000					13.7	63	0.89		37800	11760	6680*5400*4650
12500					16.2	74	0.89		42000	12800	6720*5440*4650
16000					19.4	90	0.84		48300	13900	6850*5480*4850
20000					22.9	106	0.84		56200	14900	6900*5540*4950
25000					27.1	126	0.78		61400	17200	7050*5680*5300
31500					32.2	149	0.78		73000	20400	7450*6080*5400
40000					38.6	180	0.73		81500	22400	7650*6150*5500
50000					45.5	214	0.73		90300	23700	7750*6200*5650
63000					54.2	257	0.67		104000	25900	7950*6300*5850

Notes: Outline dimensions are for reference only; please refer to the outline drawing provided at the time of order.