The bushing acts as an insulator to prevent a short circuit. In large distribution Transformers, the voltages used are so high that it the wires cannot be allowed to come too close to each other, or too close to the metal casing of the transformer. If they do get too close, then the voltage can actually jump through the air (electrical breakdown), and create a short circuit. The bushings are made longer than they need to be because things like rain, and sharp points on a transformer terminal can make it easier for the voltage to jump through the air.
A bushing is often a large metal bar covered in a ceramic insulator that's sticking out of the transformer and is where the transformer is connected to electrical wires. In the related links, the bushings are the things that have the electrical wires connected to them on top of the transformer.
A 'bushing' is a hollow insulator. It allows an energised conductor to pass through components operating at different potentials. In the case of a current transformer, it provides the insulation between a 'bar' primary and the secondary windings.
The purpose of the bushing in a transformer is to act like a go between high incoming voltage and a lower outgoing voltage. The bushing is like a electrical reducer.
It is the current transformer core meant for metering.
BCT usually stands for bushing current transformer.
A BUSHING IS A DEVICE USED TO CARRY CURRENT AT HIGH POTENTIALS THROUGH GROUNDED BARRIERS. EXAMPLE: A TRANSFORMER TANKVARIOUS BUSHINGS AVAILABLE ARE, # OIL IMPREGNATED PAPER(OIP) BUSHING # RESIN IMPREGNATED PAPER(RIP) BUSHING
This terminology usually refers to pad mounted transformers. A "radial feed " transformer is a transformer that has one bushing for the high voltage cable line. The high voltage cable terminates into the transformer through the transformer's bushing. There is no second bushing for the high voltage cable to continue further down the line. This type of transformer is usually on the end of a loop feed circuit. This is different from a "loop feed" transformer whose incoming cables are terminated at the primary bushings. On this type of transformer there is a second bushing which connects to the outgoing primary voltage cables that allows the primary to feed another transformer. Each pad mount transformer's secondary feed usually supplies enough power to connect up to four homes.
in welding machine, the transformer used is basically a current transforrmer. so by changing the tap of secondary side of transformer, we can increase or decrease the current in the transformer.
It is the current transformer core meant for metering.
BCT usually stands for bushing current transformer.
A BUSHING IS A DEVICE USED TO CARRY CURRENT AT HIGH POTENTIALS THROUGH GROUNDED BARRIERS. EXAMPLE: A TRANSFORMER TANKVARIOUS BUSHINGS AVAILABLE ARE, # OIL IMPREGNATED PAPER(OIP) BUSHING # RESIN IMPREGNATED PAPER(RIP) BUSHING
A bushing is a hollow insulator, used with transformers and circuit breakers. It provides a means by which an energised conductor can pass from the outside to the inside of the transformer or circuit breaker.
This terminology usually refers to pad mounted transformers. A "radial feed " transformer is a transformer that has one bushing for the high voltage cable line. The high voltage cable terminates into the transformer through the transformer's bushing. There is no second bushing for the high voltage cable to continue further down the line. This type of transformer is usually on the end of a loop feed circuit. This is different from a "loop feed" transformer whose incoming cables are terminated at the primary bushings. On this type of transformer there is a second bushing which connects to the outgoing primary voltage cables that allows the primary to feed another transformer. Each pad mount transformer's secondary feed usually supplies enough power to connect up to four homes.
in welding machine, the transformer used is basically a current transforrmer. so by changing the tap of secondary side of transformer, we can increase or decrease the current in the transformer.
why does have to short-circuit secondary wire of current transformer ?
The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.
It is a transformer with No load attach to it.
A current transformer is primarily used at the neutral point of a transformer for earth fault protection. A neutral current transformer will measure any ground fault current which will essentially flow from the star point of the transformer. A fault-detection device other devices is connected to the current transformer and, if the fault current exceeds a certain trigger value, the fault-detection device will give a trip command to an earth-fault relay to disconnect the supply of electricity to the transformer.
A transformer can only increase or decrease the voltage of an alternating current, and it is called step-up transformer or step-down transformer accordingly.
Yes, a transformer has eddy currents.