Distribution transformer vs power transformer

Power Transformer	Distribution Transformer
Power transformers are utilized in transmission network of higher voltages for step-up and step down application (200 kV, 400 kV, 66 kV, 110 kV, 33kV) and are generally evaluated over 200MVA.	Distribution transformers are utilized for lower voltage conveyance systems as a implies to conclusion client network. ( 6.6 kV, 11kV, 440V, 3.3 kV, 230V) and are generally appraised less than 200 MVA.
Power transformer is utilized for the transmission reason at heavy load, high voltage more prominent than 33 KV & 100% effectiveness.	The distribution transformer is utilized for the conveyance of electrical energy at low voltage as less than 33KV in industrial reason and 440v-220v in domestic reason
Power Transformers are utilized in Transmission network so they don’t straightforwardly interface to the customers, so load variances are exceptionally less.	Power Transformers are utilized in Conveyance Network so specifically associated to the consumer so load vacillations are exceptionally high
Power transformers are utilized for transmission as a step up gadgets so that the I2r loss can be minimized for a given power flow	Distribution transformers clearly cannot be planned like this. Subsequently the all-day-efficiency comes into picture whereas planning it.
The most difference between power and distribution transformer is distribution transformer is outlined for greatest efficiency at 60% to 70% load	Distribution Transformer is utilized at the distribution level where voltages tend to be lower

Courtesy

https://www.rajasthanpower.in/distribution-transformers/#rating

Certificate course in electrical trade for petroleum industry , a suggestion.

Duration of the course - one year 

 1. Basic of electricity, ohm law, types of power, its application, 

 2. Basic of Load calculation and energy meter 

3. Basic of AC and DC machine, type and application 

 4. Power generation and transmission 

 5. Basic of power distribution, substation, H-Pole

 6. Insulator and conductor , wire size, cable size, gland, cable socket , termination 

 7. Type of starter and application 

 8. Protection device like bimetallic relay, fuse, MCB,MCCB, ELCB/RCCCB, measuring instrument 

 9. Domestic wiring and circuit , different type of illumination, daily use appliances 10. Installation of motor, transformer, street pole 

 11. Maintenance of motor, transformer, MCC panel 

12. Hazardous and non-hazardous area, Electrical safety, permit, LOTO, introduction to OISD

 

Practical- 

1. Domestic wiring, minimum 2 socket and 5 switches with fan and light 

2. Testing of thermostat of electrical press and geyser 3. Motor connection with DOL starter and testing 

4. Battery connection in parallel and series , voltage check 

 5. Cable gland and termination 

 6. Connection of 1-phae and 3-phase motor 

 7. Preparing substation log book 

 8. Insulation resistance check, Earth test, current test , continuity test, voltage check 1-3 phase, battery gravity test 

 9. Street pole connection and test Practical copy – any six of above for evaluation