Transformer is a possible electrical power electrical equipment transfer, saying the guidelines transformer as production planning so that in itself will consume a some electrical power, but said most of the time the power transformer is to itself that some consumption is negligible, that is, the transformer the nameplate rated power refers to the power rating of each transformer winding, two-winding transformer Take for instance, whether the high-pressure side is still the low-pressure side of its rated power are the same. in other words a high voltage winding, the rated current is small, and the low voltage side of the rated current to be larger, in short, on each side of the winding current and voltage is equal to the product of that power are equal, these are guidelines to follow energy conservation of. That there is a power transformer produced by its rated power, each side of the rated current and rated voltage, variable ratio will determine the fundamental, as you said pressurized. . . Tap-position, adjust the voltage of power transformers can be generally are relatively small, that is, by adjusting the coil is mounted on the high pressure side of the high pressure side of the coil changes the access circuit resistance to change size the low pressure side of the voltage or current size. in other words transformer transformer is literally, in fact, together with the transformer will change the current size, in short, the rated power is constant, the high voltage side of the current is small, low voltage side of the current is large, but each side current and voltage multiplier
Product is equal. Precisely it does not change with the power transformer voltage and current and change. Variety and characteristics of commonly used transformers
First, the classification of transformer can be summarized as follows:
(1) divided by the number of phases:
1) single-phase transformer: used for single-phase and three-phase transformer load group.
2) three-phase transformer: used-liter three-phase system, the voltage drop.
(2) divided by the cooling method:
1) dry-type transformers: rely on air convection for cooling, generally used for local lighting, electronic circuits and other small capacity transformers.
2) oil-immersed transformers: relying on oil as a cooling medium, such as oil-immersed self-cooled, oil-cooled, oil cooled and forced oil circulation.
(3) by using sanctions:
1) Power transformers: L for transmission and distribution system, the voltage drop.
2) Instrument Transformers: The voltage transformers, current transformers for measurement instrumentation and protection equipment.
3) test transformers: high voltage can occur on electrical equipment subjected to high pressure experiments.
4) Special Transformer: If furnace transformer, rectifier transformers, transformers and other adjustments.
(4) by winding points:
1) two-winding transformer: for connecting the power systems of the two voltage levels.
2) three-winding transformer: Typically used for regional electric power substation systems, connecting three voltage levels.
3) autotransformer appliances: for connection to a different voltage power system. Also be used as a general boost or lower after the transformer.
(5) by the core points:
1) core-type transformer: used for high-voltage power transformers.
2) shell-type transformers: Special transformers for high-current, such as electric transformers, welding transformers; or used in electronic equipment and television, radios and other power transformers.
Change is the communication transformer voltage, current and impedance of the equipment when there is communication through the primary coil current, the core (or cores) will occur in the flux of communication, so that the secondary coil induces a voltage (or current). The transformer iron core (or the core) and a coil, the coil has two or more windings, wherein the power supply is called the primary winding of the coil, the other is called the secondary coil windings.