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: I have a packaged heat pump w/ Emergency Heat that is not working and does not come on at all. No lights or anything even when I switch it to emergency heat. Someone said that it could be my low voltage transformer. What is that and how do I check it?: A low voltage transformer on an a/c and heat system is a device that lowers the line voltage down to a safe 24 volts to run in control wiring to your thermostat to control your system. If your thermostat has a removable cover where you can see the wires underneath it is easy to see if you have no low voltage as long as you have a volt meter that can measure 24 volts ac. Make sure the thermostat is off and measure the voltage from R to any other terminal and you should read 24 volts nominal (more likely somewhere around 27) If you don't read 24 volts minimum you have a problem in the low voltage circuit. Most heat pumps will have some kind of low voltage protection such as a fuse or small circuit breaker in the unit so it doesn't necessarily mean the transformer is blown. The more important thing is to find the reason that caused it and that requires thorough understanding of the system. It's really best to have a technician diagnose this kind of problem.

Q: Hello everyoneMy last question may be a little misleading and I couldn't respond to my own question so please forgive me when I rephrase it again.I have a 65w stepdown Input230/240 AC, Out: 115V AC. 65VA transformer and I wanted to know if I should be concerned about how much electricity the transformer draws just by the fact that it is plugged into the wall socket even when the hardware connected to it is not on.I don't need an exact figure. Just a layman's terms as what your typical transformer would draw. An absolute average idea of the average transformer.If I turn the transformer off, all my appliances will need to be reset when I turn the transformer back on again.So does an average one consume as much as a light bulb, or say something much more. like a computer etc.I just need a general idea. Thank you.: Transformers are generally 85% efficient. But for no load applications, series in an ammeter and you'll know the answer for a specific transformer.

Q: I have 13 lights with 12 volts 35 Watts on each light for each tree, the outlet is 120 volts current now. Should I buy 300Watt or 600Watt low volts transformer to supply all lights? Need your advise!: you need a transformer that will support the 12volts lamps and still connect to the 120volt outlet. the best suggestion is to go to the Radio Shack and talk to the counter dude for help --- or --- go to the garden lighting section at Lowe's etc, for

Q: I know that if I needed 600 watts at 120 volts that I would need at least 5 amps, but does the step down create a difference in amperage when using a transformer converting the 120v. to 12v?: A circular saw is an AC circuit. If you were using a DC circuit, you would be using a 1200 watt tool since all of the electricity (subtracting heat loss of course) is used to run the tool. In an AC circuit, the AC is 'alternating current', a sine wave. Only a portion of the sine wave is used for real work. The rest is used to establish and collapse magnetic fields. This term is known as 'Root Mean Square' or RMS and has to be taken into account for the problem. The value of RMS in a typical 120 volt, 60 Hz circuit is .707 or 70.7% of usable energy in the sine wave. So this leads us to the question, how many watts? Answer(120V * 10A).707 848.4W. The next one is easy, they are already watt rated so there's no conversion. 1000 Watts * 8 hrs 8KWH. 8 cents * 8 KWH 64 cents. Hope this helps.

Q: does anyone know how big the transformers are in the movie or have an online reference?: Transformers ROBOT IN DISGUISE! lol ok now the answer. transformers are like realy big errr about 3.5x a semi-D

Q: How to distinguish between large, medium and small transformers: 3, according to the use of points: 1) power transformers: for power transmission and distribution system of the rise and fall voltage. 2) instrument with transformers: such as voltage transformers, current transformers, for measuring instruments and relay protection devices. 3) test transformer: to produce high pressure, the electrical equipment for high pressure test. 4) special transformers: such as electric furnace transformers, rectifier transformers, adjust the transformer, capacitive transformers, phase-shifting transformers. 4, according to the winding form points: 1) Double winding transformer: Used to connect two voltage levels in the power system. 2) Three-winding transformer: generally used in power system area substation, connect three voltage levels. 3) Autotransformer: Power system for connecting different voltages. Can also be used as a normal step-up or down transformer. 5, according to the core form points: 1) core transformer: for high voltage power transformers. 2) Amorphous alloy transformer: Amorphous alloy core transformer is a new type of magnetic materials, no-load current drop of about 80%, is the energy-saving effect of the ideal distribution transformer, especially for rural power grids and developing regions such as load rate Lower place. 3) shell transformers: special transformers for high current, such as electric furnace transformers, welding transformers; or for electronic equipment and television, radio and other power transformers.

Q: What is the normal color of the transformer oil?: these substances can make the oil color becomes darker. If the transformer oil color is dark, should pay attention to, can determine its dielectric loss factor, breakdown voltage, moisture, acid value and color indicators are in line with the new oil standards, conditional units can also determine its oxidation stability indicators Standards compliant

Q: Three-phase three-winding transformer high-pressure medium-pressure low pressure is what it means: Three-phase three-winding transformer high voltage, medium pressure, low voltage that the three sets of winding (rated) voltage level. Three windings have three windings per phase. When one winding is connected to AC power, the other two windings induce different potentials, which are used for loads of 2 different voltage levels. Power plants and substations are usually three different levels of voltage, so the three-winding transformer in the power system is widely used. Each phase of the high and low voltage winding are set on the same core column. In order to use a reasonable insulation, usually the high-voltage winding on the outermost layer, the pressure and low-voltage winding on the inner layer.

Q: i have a flyback transformer that i want to make a tesla coil out of and i need a diagram for the wiring configuration.: The modern flyback transformer is also used to generate the DC operating voltage for the TV set. You have a lot more wires than you need to use. You need to get a copy of the wiring from someplace like a Sears repair shop and hope you don't have a built-in high speed diode and filter cap in the same package. The last thing you need is to try to run your Tesla coil from a DC source on the primary. I believe Ramsey electronics makes a package Tesla kit that runs off a flyback. Your coil will not produce a very large brush discharge but it should be a good demonstrater which will have a safe, low current spark.

Q: how transformer came to know that it has to draw lagging current during summers: it does not have a clue about seasons. transformers are inherently inductive devices and thisn means current lags any day of the year

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