high-voltage Class 10KV S11 series transformer

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Supply Capability:: 1000sets set/month

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Rated capacity (KVA)	Voltage			connection group tab	Loss		unload current(%)	resistant voltage	weight			Measure(MM)			Distance of Din rail
Rated capacity (KVA)	high-voltage(kv)	extend connection	low-voltage(kv)	connection group tab	unload	load	unload current(%)	resistant voltage	empty weight	oil weight	total weight	length(L)	width(W)	height(H)	cross(M)×length
30	6 6.3 10 10.5 11	±5% (±2×2.5%)	0.4	Yyn0	100	600	2.1	4	215	85	375	965	700	1060	400×450
50					130	870	2.0		275	90	440	995	735	1085	400×450
63					150	1040	1.9		345	115	565	1085	7058	1315	400×450
80					180	1250	1.8		345	100	530	1005	755	1125	400×450
100					200	1500	1.6		395	105	590	1020	775	1130	400×450
125					240	1800	1.5		445	110	665	1035	770	1190	400×450
160					280	2200	1.4		510	120	745	1115	780	1205	550×550
200					340	2600	1.3		585	140	875	1270	740	1225	550×550
250					400	3050	1.2		690	160	1035	1380	840	1335	550×550
315					480	3650	1.1		805	175	1165	1370	775	1395	660×660
400					570	4300	1.0		955	200	1400	1450	895	1440	660×660
500					680	5150	1.0		1120	225	1610	1495	905	1500	660×660
630					810	6200	0.9	4.5	1335	265	1935	1575	980	1685	660×660
800					980	7500	0.8		1675	335	2410	1665	995	1795	820×820
1000					1150	10300	0.7		1855	380	2755	1770	1160	1855	820×820
1250					1360	12000	0.6		2205	445	3260	1825	1235	1915	820×820
1600					1640	14500	0.6		2515	535	3905	1855	1300	2000	820×820

Q:An AC generator, originally designed to provide a peak output voltage of ± 155 V at a frequency of 60 Hz, is required to provide a peak output of ± 340 V at 50 Hz. If the generator is connected to a transformer with 200 loops in its primary coil, how many loops should there be in the secondary coil in order to provide the required output?Using the formula Np/VpNs/Vs I get 439 coils, but this is too easy for a 6 mark question and doesn't include the change of frequency. I have no idea what to do and need some help :(: Your answer is correct. The frequency has no effect on the turns ratio. The frequency does effect the required primary inductance, however. More turns with 50Hz, about 20% more for same magnetizing current as with 60Hz. I am assuming your generator can change frequency.

Q:I am doing a school project of a Wind Turbine; and I need to show a transformer or what a transformer is in a wind turbine. I have just 1 question. WHY DO PEOPLE USE TRANSFORMERS?: Transformers do one of two things; they either step down the voltage and increase the amperage or they step up the voltage and decrease the amperage. They do this to modulate the line current. They are also usually part of a circuit that creates electricity; to smooth out the flow of current (like in your wind turbine example). Voltage along the primary line in the US is usually at 220 volts and that is to high to use in a house so it is stepped down to 110 volts and sent along secondary lines to homes and businesses. That is done by those big transformers you see in the back yard or hanging off of telephone and power poles. The reason why 220 volts are carried through the main line is to make it transmit further distances before another transformer is required to step up the power to keep it flowing through the line. Most household electronic equipment use a transformer to step the voltage down or up to the levels needed (usually down). The voltage running into the house is too high for most modern TV sets, computers, VCRs and DVD players as well as other stereo components so it has to be stepped down. This also gives the circuit more amperage (more power so to speak) so that it draws less amps from the main circuit and can do its job like spinning motors that take a lot of power.

Q:I really want the transformer but if i buy it i have to wait for shipping. But on the other hand if i buy either one i have to wait 2 weeks for the other.: it really depends on what transformers figure you were looking at. if it was say optimus or a megatron then id get them. it also depends on what you like more. i personally like transformers over 90% of games. i also thing that killzone 2 isn't going to be near as good as it's hype. the thing is killzone 2 retail value is 59.99 so about 64 with tax. you can buy quite of bit of transformers with that case about 5 delux figures or two voyagers or one leader.

Q:Hi, thanks for reading my question. I'm an electrician with some basic knowledge of electricity but this is puzzling me. In the USA, a single transformer on a pole means split phase. Three transformers on a pole means 3 phase. What does two transformers mean? Is it split phase with a high leg?Thanks: That is an excellent question. A single phase transformer is referred to as a split phase because it is center tapped. What that means is that the transformer as a whole is 240V with a wire tapping the coil in the center and grounded to create two separate 120V legs. The single phase transformer is essentially split into two pieces which is where the split phase terminology is derived. Three phase banks are three separate transformers working 120 degrees out of phase which is an ideal balanced setting for three phase commercial load. You can almost create true three phase using two transformers. The phase separation isn't ideal, but it does work when three phase service isn't available or a single phase service is needed in addition to a three phase service off the same bank of transformers. The term high leg is derived from the non-ideal phase orientation which creates a higher single phase voltage on one leg. BTW am I the only one tired of seeing one or two know it all people answer all the engineering questions even when they obviously haven't got a clue?

Q:Transformer short-circuit impedance is big good, or small good? The same capacity, voltage ... solution: Transformer impedance depends on the size of many factors: 1 circuit breaker breaking capacity. Transformer below the power distribution board in a variety of electrical equipment has parameters, you should calculate the short-circuit current according to the impedance of the transformer to verify that these electrical equipment can meet the requirements, the same capacity and variable ratio of the transformer, the impedance of small short-circuit current, Large short-circuit current is small; 2 transformer connected to the large-capacity motor starting voltage. If the transformer load capacity close to the transformer capacity of 1/4 of the motor, should pay attention to check its starting voltage to meet the motor terminal voltage above 70% of the rated voltage. Impedance of the transformer itself is also a large pressure drop, more difficult to meet the requirements; small impedance transformer for the start of the pressure drop better performance; because you do not know how much the transformer capacity, it can not be the absolute conclusion, if the transformer capacity below 1000KVA , The above parameters in 4% and 6% or less, the choice of 4% better

Q:100kVA transformer can withstand much of the current? What is its formula?: For safety insurance, the current density is about 3.0, S = 144.34 / 3 = 50 (about) So take the 50 square cable can be.

Q:Electrical Machinery, Electric Machines, 3-phase transformers: The advantage of a three phase transformer over a three phase bank are: It is easier to install and the unit occupies lesser space. The transformer unit can't pe pilferred easily because of its heavy weight. The disadvantages are: Cost of investment is high because a smaller capacity might have been used instead of a bigger unit.In a bank transformer, 2 units connected in delta may accomodate a given load for a given period. A third transformer may be installed later when load has increased requiring a third unit.

Q:Can a transformer having a given VA rating at 50Hz handle more power at a higher frequency, say, 300Hz or 400Hz?I want to build an inverter to run an 11 watt compact fluorescent lamp. Since these devices rectify the supply directly, there does not seem to be any good reason to feed the lamp with 50Hz.If my understanding is correct, the core has to be able to store up to one half-cycle's worth of energy in the magnetic field (which will then be released out of the secondary winding in the form of electricity) to avoid going into saturation and overheating. So at twice the frequency, it should be possible to push twice as much power through for the shorter half-period without saturating the core. (Actually, probably a little less than twice as much, as there will be more resistive heating; but transformer wire is often slightly thicker than it really needs to be, just because it's less likely to break in the winding machine.)So can I over-run a transformer this way, or is there some gotcha that I've missed?: The equation V 4.44fNaB determines what is required for a transformer to avoid saturation. V is the voltage, f is the frequency, N is the number of turns of wire in the winding, a is the area of the core, and B is the peak magnetic flux density. The transformer has presumably been designed so that the peak flux density is as high as it can be without saturating the core. For an existing transformer, V/f a constant. If you increase f, you can increase V so that V/f remains constant. However, the hysteresis losses increase in proportion to the frequency increase and the eddy current losses increase in proportion to frequency squared. In addition, skin effect will increase the copper losses at higher frequencies. Reducing the copper losses by reducing the current would compensate for the skin effect. Reducing the copper losses would tend to compensate for the increased iron losses, but it is hard to say how much a cooler coil will compensate for a hotter core.

Q:a house's two furnaces are not working. the pilot lights are on. The lady's brother said there is no voltage at the thermostat. where does the 24 v come from? a transformer ? where?: There are two step down transformers either 208 to 24V or 120V to 24V. The transformer is marked what voltage its rated for and also can be verified with a volt meter. You need to check inside the furnace for voltage by removing the furnace panel. Try this turn the fan to ON on the thermostat. If the blower comes on your getting signal. And have 24V. Now if you have batteries in the thermostats then either the contacts are dirty or the batteries are dead. So check that as well. Also, if for some off reason you took the furnace cover off and did not put it back on right. There is a door switch. If the switch is not making good contact the unit wont do anything. Lastly if you have an older furnace that uses a fan combination switch that may be bad. Try running the unit with the fan set to ON and then turn the heat on. If the heat comes on then the fan combination switch is at fault and your on barrowed time till the high limit device fails.

Q:Here I am building prototype transformers for testing, using 1 ft length aluminum conductors of 1/2 by 1/2 inch width square conductors. I am structuring the (aluminum square tube)windings(connected at corners by ordinary round copper wire) in return layer diagonals, ( the pattern set by odd magic square sequences) to establish maximum internal capacity in the windings. If the current in the windings is opposite between every internal lateral square facing, most of the external field around the windings is cancelled, but internally between the windings the magnetic loops will be in unison. I therefore wish to put insulated steel tube sleeves around the internal aluminum loops of the wiring array, for a very unconventional honeycomb type core transformer. I should be able to measure for eddy current output on any steel sleeve by shorting the ends of the outside steel segment with an amperage meter. A conv. secondary will also need copper loops wound lengthwise around the steel.: An AC transformer connects AmpereTurns in the Primary to AmpereTurns in the Secondary using the time varying magnetic field in the core. The maths for the size of the core is well established. If you double back on turns they do not count as part of your ampereturns - unless you shield the doubled bit. Such methods are used in shaded pole motors. The only way to lighten the Tx is to use higher frequencies in the core. This 'dumps' the magnetic energy into the secondary more often so you can use a smaller core (bucket of energy!) The magnetic field is always perpendicular to the current and hence so are the core loops (in a Vector Notation sense - not necessarily physically) If you introduce Iron windings in the windings space you will get bigger Ohmic Losses. I hope this helps - you obviously have a plan to make hyper-efficient Tx but they are already near 0.999 efficiency.

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