Which factors affecting life of transformer?

Which factors affecting life of transformer?

The life of a transformer is defined as the life of the paper insulation [1]. The paper insulation deteriorates with several factors, primarily including temperature, moisture content, and oxygen content.

What are the factors of transformer?

10 Factors To Consider When Specifying Transformers

• Kilovoltampere (kVA) Rating.
• Voltage Ratings, Ratio, and Method of Connection (Delta or Wye)
• Voltage Taps.
• Typical Impedance Values for Power Transformers.
• Insulation Temperature Ratings.
• Insulation Classes.
• Sound Levels.
• Effects of Transformer Failures.

What factor affects the induce voltage of transformer?

The size of the voltage can be varied by three factors: The size of the magnetic field. The more flux lines there are, the more flux lines there are for the conductor to cut. The strength of flux is directly proportional to the induced voltage.

What are the factors of maintenance?

The analysis of the questionnaire answered by (75) engineers showed that the most influencing factors on maintenance procedures and their time are; Maintenance time (when it started), safety and health measures, work completion time, defective construction, lack of implementation, poor completed maintenance work.

What is the main cause of noise in the transformer?

What Causes the Humming Noise in an Electrical Transformer? The main cause of transformer noise is the Magnetostriction Effect. The alternation current that flows through an electrical transformer’s coils has a magnetic effect on its iron core. It causes the core to expand and contract, resulting in a humming sound.

How many types of transformer are there?

There are three primary types of voltage transformers (VT): electromagnetic, capacitor, and optical. The electromagnetic voltage transformer is a wire-wound transformer. The capacitor voltage transformer uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic VT.

What is the reason of heating of transformer?

Transformer oil to Loosening of used anywhere conductors is caused by transformer overheating vibrations which produce heat is called overheating. This heat damage the insulating paper and the mineral oil used, because transformer oil is made of the combination of mineral oil or insulating oil.

How do you calculate the input power of a transformer?

Input and output power

1. Electrical power is calculated by multiplying voltage (in volts) by current (in amps).
2. If a transformer is 100% efficient, then the input power will equal the output power.
3. V P is input (primary) voltage.
4. I p is input (primary) current.
5. V s is output (secondary) voltage.

How to describe the basic operation of a transformer?

Basic Transformer operation can be described by two formulae relating the transformation ratio to the turns ratio of the transformer windings. V P = the primary voltage. I P = the primary current. V S = the secondary voltage. I S = the secondary current. N P = the number of turns in the primary winding.

What happens when no load is put on a transformer?

Because the action of a transformer is nearly perfect, the power in both primary and secondary windings is the same, so when no load is put on the secondary, no secondary current flows and the power in the secondary is zero (V x I = 0).

What happens when the voltage of a transformer is doubled?

Therefore if the secondary voltage is greater than the primary voltage by a particular amount, the secondary current will be smaller than the primary current by a similar amount, i.e. If the voltage is doubled the current will be halved.

How does a changing current in a transformer affect the conductor?

Faraday’s work in the 19th century showed that a changing current in a conductor (e.g. a transformer primary winding) sets up a changing magnetic field around the conductor. If another conductor (secondary winding) is placed within this changing magnetic field a voltage will be induced into that winding.