Special types of wet-type power transformers, coils and core soaked in oil - transformer, especiall

Commonly termed transformer transformers promenade at carillon or 'transformer' is a tool to "move" promenade at carillon the electric power alternating current (alternating current) of a circuit to another circuit promenade at carillon is based on the principle of electromagnetic induction (induction EMF) that occur between the two inductors (coils) or better.
Iron core serves to simplify the way flux, magnetic generated by an electric current through the coil. Made of thin iron plates are insulated to reduce heat (as the iron loss) caused by the Eddy Current.
Transformer coil windings are some insulated wire that forms a coil or coils. The coil consists of a primary coil and the secondary coil is well insulated thgerhadap iron core and the solid insulation between the coil like cardboard, pertinak and others. Such as a coil voltage and current transformation.
If kumpatan primary voltage source connected to the alternating current (AC), then the current I1 will flow in the primary coil, and cause the magnetic flux varies according to frequency transformer promenade at carillon currents I1 in the kernel, and cause induction GGL e? the primary coil. The magnitude of induction GGL e? are:
Changes in magnetic flux which induces GGL ep is flux with (mutual flux), promenade at carillon so GGL kumparen induction appears on the secondary as the magnitude of the ice is: ice = Ns (d / dt) volts ........................... (2)
Because the ratio of the voltage is proportional to the ratio of windings, then if a <1 then serves as lowering the voltage transformer (step-down promenade at carillon transformers), and if the value of a> 1 then the function is to boost (step-up transformers). Flux at the time expressed by f (t) = sin wt fm with m = maximum flux value (webwer), so GGL in the primary coil is:
Equation (5) and (6) it is commonly used as an approach to supervision practice in the field.
2. TYPE / TYPE TRANSFORMER: by function-type transformer transformer step-up-step-down transformer transformer type is based on a comparison between the number of primary windings and secondary windings number-transformer step-up-step-down transformer transformer type power supply single-Transformers-Transformer CT type transformer based core-shell-type transformer transformer core type transformer utility-based power-transformer autotransformer
In accordance with the above, then a distribution transformer serves to lower the transmission voltage of 20 kV medium voltage promenade at carillon to the 220/380V distribution and thus, the equipment is the main transformer unit itself (mostly type 3 phase).
In addition to the two coils (primary promenade at carillon and secondary) there are several transformer is equipped with a third coil or coil tertiary (tertiary winding). Tertiary coil voltage required to obtain a tertiary or for other needs. For both these purposes, always connected delta tertiary coil. Tertiary coil is often used also for connecting auxiliary equipment such as condenser Synchrone, shunt capacitors and shunt reactors, however, not all have the power transformer coil tertiary.
Special types of wet-type power transformers, coils and core soaked in oil - transformer, especially transformers - large-capacity power transformer, because the transformer oil has properties as a heat transfer medium and is also as insulation (high breakdown voltage) promenade at carillon that serves as a medium cooling and insulation. For the transformer oil must meet the following requirements. :
Is the liaison between the transformer coil to the outside network. Bushing is a conductor that is enveloped by an insulator, promenade at carillon which also functions as an insulator between the conductors of the transformer tank.
Tap Changer is a comparison of change operating promenade at carillon voltage transformer secondary to obtain the desired voltage network / primary fickle. promenade at carillon Tap changer can be operated either in a state loaded (on-load) or in a state of shutoff (off load), depending on the species. promenade at carillon
Because the effect of the rise and fall transformer load and outside air temperature, then the temperature will vary minyakpun follow these circumstances. When a high oil temperature, oil expands and urges the air above the surface of the oil out of the tank, otherwise if the oil temperature drops and the volume will shrink the outside air into the tank.
The above process is called respiration transformer. This causes the surface of transformer oil will always be in contact promenade at carillon with outside air which lowers the value of breakdown voltage of transformer oil. To prevent these conditions, at the end of the connecting pipe outside air comes a special tube containing the crystals promenade at carillon are hygroskopis.
3. Arc