Oil-immersed power transformer of 35kV

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Product Description:

Oil-immersed power transformer of 35kV

1. Product

S9 series power transformer of 35kV is mainly used for the transmission and distribution in the power system of voltage level 35kV and rated frequency 50-60Hz, the capacity of it is 50-31500kVA. The iron core adopts silicon steel sheet with high permeability, full-oblique joints, no punching, and colligated and taken up with semi-dry epoxy fiberglass banding. The fuel tank has three types of radiators: flat tube type, corrugated type and chip type. The 800kVA above transformers are equipped with gas relay, pressure relief valve, oil tank with diaphragm and remote thermometer components.

The transformers of 3150kVA and above are equipped with oil refiner. The characteristics of products are low loss, low noise, save power and so on.

SZ9 series on-load-tap-changing power transformer of 35kV is equipped with tap changer, the voltage regulating range of it is ± 3 × 2.5%. The voltage adjustment can be controlled by manual or automatic through control box. The structures,performances and characteristics of the transformer are as the same as the power transformer of S9 series for 35kV.

The products conform with the GB/T6451-2008 standards.

2. Technical parameter

35kV S9 series distribution transformer technical parameter

Model	Rated Capacity （kVA）	Rated voltage （kV）		Loss （W）		Impedance of short-circuit（%）	No-load current（%）	Label number of connecting group	Weight （kg）			Outside DimensionL x W x H（mm）	Gauge （mm）
Model	Rated Capacity （kVA）	HV	LV	No-load	load	Impedance of short-circuit（%）	No-load current（%）	Label number of connecting group	Body	Oil	Ttotal weight	Outside DimensionL x W x H（mm）	Gauge （mm）
S9-50/35	50	38.5±5% 35±5%	0.4	0.21	1.27/1.21	6.5	2.0	Yyn0 Dyn11	345	260	820	1140×955×1760	550/550
S9-100/35	100			0.29	2.12/2.02		1.8		408	390	1070	1180×1070×1910	550/550
S9-125/35	125			0.34	2.50/2.38		1.7		415	470	1100	1180×1090×2000	550/550
S9-160/35	160			0.35	2.97/2.83		1.6		423	555	1295	1180×1100×2035	550/550
S9-200/35	200			0.43	3.50/3.33		1.5		524	655	1540	1260×1150×2075	550/550
S9-250/35	250			0.51	4.16/3.95		1.4		550	825	1755	1330×1200×2155	660/660
S9-315/35	315			0.61	5.01/4.77		1.4		640	945	2010	1390×1250×2220	660/660
S9-400/35	400			0.73	6.05/5.76		1.3		740	1125	2390	1720×1260×2285	660/660
S9-500/35	500			0.86	7.28/6.93		1.2		805	1289	2710	2045×1290×2415	660/660
S9-630/35	630			1.04	8.28		1.1		885	1455	3040	2155×1320×2250	820/820
S9-800/35	800			1.23	9.90		1.0		1050	1800	3700	2265×1340×2700	820/820
S9-1000/35	1000			1.44	12.15		1.0		1335	2115	4510	2495×1380×2885	820/820
S9-1250/35	1250			1.75	14.67		0.9		1445	2610	5045	2595×1410×2910	1070/1070
S9-1600/35	1600			2.12	17.55		0.8		1490	2840	5740	2680×1590×2970	1070/1070

Note： Load values before “/” are for Dyn11 connection and values after “/” are for Yyn0 connection.

35kV no excitation voltage regulating power transformer technical parameter

Type specification	Rated Capacity kVA	Rated voltage（kV）		Loss （W）		Impedance of short-circuit （%）	No-load current（%）	Label number of connecting group	Weight（kg）			Outside DimensionL x W x H （mm）	Gauge（mm）
Type specification	Rated Capacity kVA	HV	LV	No-load	load	Impedance of short-circuit （%）	No-load current（%）	Label number of connecting group	Body	Oil	Total weight	Outside DimensionL x W x H （mm）	Gauge（mm）
S9-800/35	800	38.5±5% 35±5%	3.5 6.3 10.5	1.23	9.9	6.5	1.0	Yd11 Ynd11	1150	1800	3900	2265×1340×2700	820/820
S9-1000/35	1000			1.44	12.15		0.9		1335	2115	4510	2495×1380×2885	820/820
S9-1250/35	1250			1.76	14.67		0.8		1445	2610	5045	2595×1410×2910	1070/1070
S9-1600/35	1600			2.12	17.55		0.7		1490	2840	5740	2680×1590×2970	1070/1070
S9-2000/35	2000			2.72	19.35		0.6		1574	3280	6410	2690×1620×3100	1070/1070
S9-2500/35	2500			3.20	20.70		0.56		1885	3860	7695	2730×1900×3000	1070/1070
S9-3150/35	3150			3.80	24.30		0.56		2145	4610	8980	2660×2900×3100	1070/1070
S9-4000/35	4000			4.52	28.80		0.48		2270	5330	10060	2800×2865×3365
S9-5000/35	5000			5.40	33.03		0.48		2580	6330	11670	3460×2940×3430
S9-6300/35	6300			6.56	36.90		0.42		2840	7440	13430	3800×2770×3355
S9-8000/35	8000			9.00	40.50		0.42		3500	9650	17200	4400×3000×3520
S9-10000/35	10000			10.88	47.70		0.40		4400	12200	21000	3800×3550×3750
S9-12500/35	12500			12.60	56.70		0.40		5000	13740	24500	4500×5650×3900
S9-16000/35	16000			15.20	69.30		0.40		5520	16800	27800	4800×3700×4050
S9-20000/35	20000			18.00	83.70		0.32		5900	19020	31100	5240×3830×4040
S9-25000/35	25000			21.38	99.00		0.32		7200	23400	37600	5520×3800×4460
S9-31500/35	31500			25.28	118.80		1.0		7660	26080	42200	5660×3800×4590

35kV 2000~12500kVA load voltage regulating power transformer technical parameter

type Specification	Rated Capacity(kVA)	Rated voltage (kV)	Loss (kW)		Impedance of short-circuit(%)	Label number of connecting group	Weight(kg)			No-load current （A）
type Specification	Rated Capacity(kVA)	Rated voltage (kV)	No-load	Load	Impedance of short-circuit(%)	Label number of connecting group	Body	Oil	Total weight	No-load current （A）
SZ9-2000/35	2000	35	2.88	20.25	6.5	Yd11	2.9	20.25	0.9	0.80
SZ9-2500/35	2500	35	3.40	21.73	6.5		3.44	21.74	0.9	0.80
SZ9-3150/35	3150	38.5 35	4.04	26.01	7.0		4.09	26.0	0.81	0.72
SZ9-4000/35	4000		4.84	30.69			4.95	30.7	0.81	0.72
SZ9-5000/35	5000		5.80	36.00			5.85	36.0	0.77	0.68
SZ9-6300/35	6300		7.04	38.70		YNd11	7.02	38.7	0.77	0.68
SZ9-8000/35	8000		9.84	42.75	7.5		10.0	42.7	0.68	0.60
SZ9-10000/35	10000		11.60	50.58	7.5		11.7	50.6	0.68	0.56
SZ9-12500/35	12500		13.68	59.85	8.0		13.77	59.85	0.63	0.54

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