Power ransmisi

Plants usually located far from residential areas in order to meet the energy needs of the community in need of a long cable network. With limited capacity, there are two ways plihan transmits electricity from power plants to residential areas.

Firstly, power transmission is made through a large electric current (that is, low voltage). This method requires a cable with a cross section sufficiently large to minimize the resistance (increase the conductor cross-sectional area, lower resistance). However, the mileage is very necessary to use it in kebel too long. In this case, the electrical resistance of the cable to be large (the more conductive, greater resistance). This means that the loss of power (P = I2R) has also become very large. This option becomes uneconomical, took a great long cables and power loss large.
A second option, which is the transmission of energy from high voltage is considered more economical. With the high voltage (ie, the small electric current), the wire need not be very large but very long. Then, the second option is associated with a small electrical current and lower resistance in comparison with the use of high voltage, and not less important is the energy losses are relatively small.
Distribution of electricity power plant at a distance requires a transformer, or step up (voltage penaik) and step-down (decrease voltage). The voltage of the power station before being transmitted (about 10 kV) are usually raised first to use a step transformer (up to about 150 kV). Furthermore, the power transmission is done with high voltage. For the distribution of power to the residential population within safe levels, is designed to decrease the voltage electricity substation view a certain value (e.g., 10 kV). In the next transmission, the voltage is reduced to the poles around the settlement of 220 V for direct distribution to the consumer of electricity.

DYNAMIC ELECTRICAL

DYNAMIC ELECTRICAL: dynamic electricity is electricity is moving. How to measure current strength in dynamic power is the electrical charge dibagai time with the unit and the electric charge is unit of time is the second coulumb. Strong currents in the circuit branches with Kuata input stream with strong currents leaving. while a series circuit current strength remains the same every obstacle edges. Resistance strain quite different. a voltage series circuit depends on the resistance, but the voltage branch circuit has no effect on strength. all that has been stated by Kirchhoff's law, which reads. "The number of strong electric currents that go along with the amount of electrical current coming out strong." Ohm's Law can be summarized as measuring resistance × voltage current is strong. Barriers value is always the same as the voltage is proportional to the current intensity. strain has units of volts (V) and the current intensity is amperes (A) and resistance is ohm.

Danger of static electricity

1. Lightning
Lightning caused the excess electron cloud on the roof of a building, then to construct induced a positive charge. Springboard electrons occurs from the cloud to the roof because of the force of attraction between the two. This event caused the building to avoid being struck by lightning strikes petir.Untuk roof equipped with arrester protects petir.Penangkal building as follows:
Leaving a cloud of electrons to flow through the arrester and to the floor. If the positively charged air molecules gathered around the pointed end of the arrester flows out, then the electrical charge induced on the roof and partially reduced negative charge at neutral be cloud, so that the possibility of a short circuit is minimized .

2. Fire sprinkler
Rounds the truck runs produce negative charge derived from friction of the tire with the road. The inside of the tire adjacent to the metal becomes positively charged by induction. This can cause a fire. To avoid the incident trucks gasoline or other flammable materials come with a metal piece at the back of the car hits the ground. These metals conduct electrons from the ground to neutralize the positive charge on the metal body of the car before the fire.

3. Electrostatic Hazards in Aircraft
The static electricity discharged plane of the ends of the fuselage structure of the roof wing and tail shaped an arrester in shape and elongated adhesive metal aircraft instrument was protected in such a manner, but can also occur, although only a visual. Visual is visible when the aircraft is at an altitude of 30,000 feet and altimeter adjusted to 29.92Hg and ION2 free particles in the air will be affected by friction planes and electromagnetic radiation signal HP will increase by a certain percentage of radiation in the plane, wherein HP will be considered as a signal radiation and is absorbed by the structure of the body and dumped at each end of the fuselage, can cause electrostatic discharge ends brightness and lightning lit up a small box. This is not dangerous, but if the frequency is the same as HP's plans could cause aircraft engines to die.

4. Electrostatic Hazards in Railway
Wheels KA type ferritic steel, has a very strong magnetic field. The magnetic field is what can lead to the vehicle engine died in the middle of the rails. Normally, a single death is a gasoline vehicle gasoline-powered vehicles, because endaraan still uses platinum and CDI. When exposed to a magnetic field, then the ignition will not be affected so that the engine may die. While solar is different. In addition to the above 12 volts accunya also do not use platinum.

5. The pump electrostatic hazards
29 fires occurred in the vehicle entered and played back from the nozzle during refueling from a variety of makes and models. To avoid this, you should never go back into your vehicle while fueling is in progress. If you really had to get back to your vehicle while the gas is pumping, make sure you leave, close the door, touching metal before you pull the nozzle out. Thus, the static body will be discharged before you remove the nozzle.

Benefits of static electricity

1. Van de Graff generator
Electric charges obtained menggosok.Untuk get used electrical charge huge Van de Graaff generator. The friction between the rubber band and accessible players causing an elastic electrically charged. The electric charge is stored on the ball logam.Distribusi electric charge is on the outer surface of a hollow sphere.

2. Smoke coagulation
This tool eliminates ash particles from the burning gas, thereby reducing air pollution. The tool consists of a thread of tobacco coagulation and metal plates, wires made of negative charge, wherein the ash particles that pass through a wire negatively charged. Metal plate with positive charge would be made so that attract dust particles negatively charged. Agglomerated ash particles which then fall to the bottom cerbong easier to clean. Technical smoking coagulation is often used in steel mills, cement factories and chemical plants emit much smoke.

3. Spray Paint
Granules ink aerosol to be charged when rubbed with a spray nozzle and air. If the object being painted is charged opposite, then the grain will be attracted to the body paint thing. This method is very effective, efficient and inexpensive.

4. Copiers
Copiers use a different electrical charge call. A pattern of positive charge on the plate before, portray black areas to be duplicated, attract negatively charged particles of fine black powder called toner, toner is so negatively charged because dealing with glass beads in the developer tray. The pattern of toner transferred to the sheet and baked in it.

5. Laser printer
When the spins of positively charged battery, the brightness of the laser across the surface is not charged. Laser will draw on the paper negatively charged. After passing through a rotating drum of paper will pass through the fuser. In part, this paper will fuser to heat, which is why the role was warm when out of the printer. Laser printers faster, more accurate and more economical.