THE MAIN ELECTRICAL EQUIPMENT POWER SUBSTATIONS
Ø Power transformers Ø Switching devices o Switches voltages above 1000 V • Air circuit breakers • Gas-insulated circuit breakers • Vacuum switches • Solenoid switch • Oil switches • Load switches o Switches voltages up to 1000 V • Fuses • Circuit breaker Ø High-voltage fuses Ø Disconnecting
Power transformer - electrical device that changes the voltage and current of one level to another, while maintaining the power running through it.
Types of power transformers • double-wound power transformers • triple-wound • a split secondary winding • isolation transformers • to open the secondary winding • autotransformers https: //vk. com/video-56065363_166798466 https: //youtu. be/b. Mcn. Kj_vl_8
Switching devices Switches voltages above 1000 V Switch - a switch automatic operation, designed for switching (on and off) workers and fault currents.
Air circuit breakers Used for voltages of 110 k. V and above, but the most widespread they have received in the networks of 220 k. V and above. A major advantage of the type of air circuit breakers is environmentally friendly, as they arc quenching medium is a normal air.
Gas-insulated circuit breakers
Vacuum switches https: //youtu. be/G 8 f. J 9 Wnca 8 Q
Solenoid switch The electromagnetic switch - a high voltage switching device, wherein the quenching of the electric arc produced by reacting the plasma arc and the magnetic field.
Oil switches Oil switch - switching device, designed for operating on and off individual circuits or electrical power system, under normal or emergency conditions, with manual or automatic control. Arc suppression occurs in a switch in the oil. https: //vk. com/video-68731548_168275988
Load switches Load breaker - a three-pole the switching device type, which is designed to include, passing current ratings and trip under load.
Switches voltages up to 1000 V Fuses Fuse - electric switching device intended to disconnect the protected circuit by breaking specially provided for this live parts under the influence of the current exceeds a certain value. https: //youtu. be/7 i. CT 0 wza. Kfs
Circuit breaker The circuit breaker (automatic) for automatic opening of the circuit in case of overload, short circuits, as well as rare outages and inclusions.
High-voltage fuses are used to protect electrical equipment electric networks up to 1000 V from short-circuit currents and over-tolerance overloads.
Disconnectors called electrical device for rapid switching (on and off) sections of the network and equipment, under the noload voltage. https: //youtu. be/Ggz. I 7 q 2 gj. Vs https: //youtu. be/e. O 70 us. P 3 t 2 M
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Электрические сети 4.pptx