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is a electrical device that converts voltage from either high to low or low to high voltage. works only on alternating current system.

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transfomer

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transformer - Details

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1) Chapter 1 View

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16 questions

🇬🇧		🇬🇧

Is a electrical device that converts voltage from either high to low or low to high voltage. works only on alternating current system.

Transfomer

Side of a transformer is also known as the source side. the voltage of the __ side will be less then the voltage of the secondary side if the transformer is stepping the voltage up. Inversely, the voltage of the ___ side will be more than the voltage of the secondary side if the transformer is stepping the voltage down.

Primary

Also known as the load side

Secondary

The primary bushing of an overhead distribution transformer are labeled __ and __. the __ is always on the left if facing the transformer

H1 and h2 bushing

The secondary bushing of an overhead distribution transformer are labeled __, __ and __. the __ is the neutral bushing

X1,x2 and x3

Stands for kilo volt amperes and is the wattage rating of the transformer. the rating of a transformer us usually stenciled on the front of the transformer. a transformer with a 15 stenciled on the front would be rated for 15,000 watts

KVA

Is an overhead transformer that needs an external protective device for protection (cutout switch). the lighting arrestor is typically located with the switch. does not have any internal protection

Conventional transformer

Have internal primary fuse and internal secondary breakers. when installed it does not need to attach to a cutout switch. the lighting arrestor is attach to the tank of the transformer.

Csp transformer

Provides path for a magnetic coupling of the transformer windings. without the core, a transformer would be very inefficient. the core gives the tansformer the bulk of it weight.

Transformer core

In a transformer occurs with the insulating oil. as the oil heats near the core, it rises and is forced to the outside against the tank where is cools. as it cools it falls to the bottom of the tank. this continuous circulation caused by heat is called ____ and is how transformers are cooled

Convection

Wasa a part if the insulating fluid in tsansformers in the past. its harmful to the environment and prohibits in new transformer.

Pcbs

Is the energized of a coil of wire by placing it near a coil that is energized with AC current. its the basic principle that allows the transformer to work.

Induction

Is a comparison of the number of turns of wire in each coil. it can be calculated by dividing the primary voltage rating of transformer by the secondary voltage rating .

Turns ratio

When the three coils are each connected phase to phase, the the three phases are connected in series. This connection is known as ___ connection.

Delta

Refers to the transformer of a delta or open delta secondary that serves the majority of the single phase, this transformer is usually sized larger than the other transformer in the bank and always has a neutral connected to the x2

Lighter transformer

Refers to those transformer banks composed of only two transformer. the vectorial diagrams of these banks lack a third vector giving the appearance of a broken.

Open banks