7EE8 POWER SYSTEM & HIGH VOLTAGE LAB
 

  1. (i) Measurement of flashower voltage of 11 KV in type insulator and string type insulator (ii) Calculator of string efficiency of the string of suspension insulators (iii) Measurement of High Voltage using electrostatic voltmeter (iv) Improvement of string efficiency by connecting guard ring.

  2. Find out the dielectric strength of the transformer oil.

  3. Perform puncture voltage testing on (i)Healthy cable (ii)cable having pinhole in the insulation.

  4. Study of zero sequence current in three phase transformers.

  5. To find out the sequence component of synchronous machines.

  6. To see the burden effect on the performance of CT and measure the phase angle and ratio error.

  7. (i) Study of over current relay. (ii)to draw the current/time characteristics of an over current relay for TMS=1 & 0.5 and PSM=1.25 & 1.0.

  8. (i)Study of percentage bias differential relay (ii)To plot the characteristics of a percentage bias differential relay for 30%, 40% and 20%.

  9. Study of Gas actuated Buchholz relay.

  10. Study of under frequency relay and checking it's setting experimentally.

  11. Study of over flux relay and auxiliary relays.

  12. Study of auxiliary relays.