Oil-immersed power transformer of 35kV

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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

Q:How to use a multimeter to determine the quality of small transformers: Generally with the smallest ohm file to measure whether the primary tap, if not, then damaged. Use the X10K stall above the ohm stalls to measure the primary and secondary, primary secondary and iron core for short circuit or leakage. If there is connectivity, then the insulation is bad or has been burned or breakdown.

Q:Photovoltaic grid-connected system, with the inverter with the role of transformer. In the choice of inverter with a transformer and without a transformer, how should choose? That is the isolation, I do not quite understand. Who knows that high! Thank you!: Select the inverter, then the election from the output waveform, preferably not lower than the quasi-sine wave; Secondly, the inverter should have a complete circuit protection; third, manufacturers have a good after-sales service commitment; And the product after a period of time.

Q:Transformers have any way of cooling: According to the requirements of the transformer selection guide, the choice of cooling method is recommended as follows: 1, oil leaching from the cold ???31500kVA and below, 35kV and below products; ???50000kVA and below, 110kV products. 2, oil-immersed air-cooled ???12500kVA ~ 63000kVA, 35kV ~ 110kV products; ???75000kVA below, 110kV products; ???40000kVA and below, 220kV products. 3, forced oil circulation air-cooled ???50000 ~ 90000kVA, 220kV products. 4, forced oil circulation water cooling ???General hydropower plant up and down 220kV and above, 60MVA and above products used. 5, forced to guide the oil circulation air cooling or water cooling (ODAF or ODWF) ?????75000kVA and above, 110kV products; ???120000kVA and above, 220kV products; ???330kV level and 500kV grade products.

Q:I have a friend who lives in a place that she converted to a liveable space at a movie studio complex; however, the space is right above the transformer used by the studios for power. At night we can sometimes hear some buzzing sounds. How dangerous is this? We've heard things like it causes cancer in the long run, and that it is simply not safe. Does she have to worry about it? She's been there about two years.: Transformers can produce powerful electromagnetic fields, but there is no definitive answer on the safety of living next to transformers. Some people believe the electromagnetic fields cause health problems, and others do not. Bona fide research on health risks has produced sometimes contradictory results. One thing is for sure, high capacity transformers occasionally explode if they get overloaded, but these types of transformers are not allowed inside of buildings.

Q:For example, if you have a battery that puts out 1 amp, can you use a step down transformer to turn that into 1000 Amps. Or is there some sort of limit to how much one can increase current in a circuit?: A battery produces DC. Transformers work on AC.

Q:According to your measurements when we have a step-up or a step-down transformer?: A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or voltage in the secondary winding. This effect is called mutual induction. If a load is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np) as follows:- Ns/Np Vs/Vp ---------------------(i) By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be stepped up by making Ns greater than Np, or stepped down by making Ns less than Np.

Q:i have one traditional old mig welder with transformer and i would like to buy one inverter mig wilder because its lighter weight,so which is better in working and less trouble?: The transformer. The inverter can not put out as much electrical power. This leads to much less welding time, and much more idle time. The thicker the copper wire on the transformer, and iron core the more efficent the transformer. The more efficent means the most power out for the power in. Less means loss. This explains the heavier weight.

Q:I will be living in Germany for a while and I'm trying to plug my TV in, as well as one or two other things. The 1000 transformer I have works, but whenever I plug in the power strip to plug in more things than just the tv, it will automatically blow the power in the house and I have to go flip the switch again. Other Americans I know here in Germany do not have this same problem. I need help!: Only if the power strip is also rated at 3000 volts or higher. Otherwise, definitely not.

Q:I was just wondering if Michael Bay was going to be making/directing a fourth Transformers. Honestly, I have a weird feeling the third movie didn't have that.'ending' where it says it's finally over. So is there or a suggestion?: According to 'Don Murphy' (Transformers producer) What we do know is that there’s already a rough plan in place for a fourth film, it would not be a prequel and that it would continue the franchise’s focus on human characters in an effort to kick start a second Transformers trilogy. Michael Bay has responded to rumors of his involvement by saying Right now I’m not decided on Transformers 4… Studio’s are passing rumors but I’m not sure what I’m doing? I know I’m going to do ''Pain and Gain'' early spring but that’s it for right now. I’m leaving all my options on the table. I’ve got several Studio meetings in the next few weeks I would say its gonna happen because its too much of a 'cash cow' to discontinue the franchise

Q:Transformer 1250KVA Dimensions: This is not fixed, you list the conventional products, unconventional products can be arbitrarily selected according to customer requirements. There are 300kv, 1000KV, 1100KV, 1150KV and so on

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