Hello fellow steemians , today I'll be participating on SLC22/WK1: Advanced Electrical Transformers and the Power Factor by @mahadisalim

Transformers are the major tools that enables the flow of electricity current to our homes,so I really think it was a privilege to go through the learning of transformers and the power factor

A

The two transformers from the diagram are ;

• Step up Transformer
• Step down Transformer

First Diagram: The first transformer with 220/415V is a step up transformer because it convert lower voltage to a higher voltage.

On the diagram we can see that the voltage conversion of the transformer is ranging from 220 to 415V And this proof that the transformer is stepping up from 220v to 415v

Second Diagram:The second diagram with 415/220V shows that voltage is been converted from a higher voltage to a lower voltage which tells us that the second diagram of the transformer is a step down transformer .

On the diagram we can see that the voltage conversion is also ranging from 415V to 220V which proof that it's stepping down .

• Step up Transformer
  a = Np/Ns
  Given that
  NP=4
  NS=8
  a=?
  a=4/8
  a=1/2
  can be written as 1:2
  So 1:2 is our turn ratio of the step up transformer

• Step Down Transformer
  a=NP/NS
  Given that
  NP=8
  NS=4
  a=?
  a=8/4
  a=2:1
  So our turn ratio is 2:1

B

_{Edited by Pixellap}

• Temperature Gauge :The functions of a temperature Gauge is to indicates if the oil and coil are hot after running on the transformer load and also to switch off the transformer through a tripping relay in case of over temperature.

• HT Bushing :The HT Bushing provide electrical insulation between the high-voltage conductor and the transformer tank , preventing discharge and ensuring safe operation .

• LT Bushing : LT Bushing provide electrical insulation between the low-voltage conductor and the transformer tank, preventing discharge and ensuring safe operation .

• Radiator :The radiator is an instrument of a transformer that cools that the transformer whenever it's overheated ,it serve as the cooler.

• Breather :Breather allows the moisture in the transformer to escape and also permits air to enter the transformer tank .

• Conservator :Conservator helps to store additional transformer oil which can be drawn into the transformer tank whenever it's needed.

• Buchholz delay :The Buchholz relay is a safety device in transformers that detect fault and stops the transformer in case of transformer oil, coil, or internal fault and prevents accidents.

C

The transformer that's used for my home electricity is known as distribution transformer . It's used to step down the high voltage to a low voltage

The distribution transformer reduces voltage that's suitable for homes, so that's why it's used at home to step down a higher voltage

D

Given that
KVA = ?
KW = 5000
PF = 0.9
Therefore,
KVA = KW/PF
KVA = 5000/0.9
= 5555.56
= 5556 KVA
5556 KVA transformer will be required for a 5000 KW load

F

Given that

Power = 2500 kVA (2.5 MVA)
HV Voltage = 33 kV
LV Voltage = 0.415 kV

G

Power factor is the ratio of real power used to perform work to the apparent power supplied by the electrical source. It is a measure of how effectively electrical power is converted into useful work output,It's measured in kilowatt. The power factor of my country(Nigeria) is 0.95

H

Determine True/False:

I really appreciate @mahadisalim for his time and effort on teaching fellow steemians the Advance Electrical Transformer and Power factor, I know most of us who went through his teaching have learnt one or two thing. I'll be invite @jozzie90,@goodybest and @ngoenyi to join me on the SLC