High Voltage Laboratory Department of Electrical Engineering, Indian Institute of Technology, Kharagpur.

2 Department of Electrical Engineering IIT Kharagpur One of the Oldest laboratories of Electrical Engineering Department, IIT Kharagpur One of the Oldest laboratories of Electrical Engineering Department, IIT Kharagpur Maximum rating is 600 kV Maximum rating is 600 kV Major Activities Major Activities Research & Development Research & Development Consultancy Consultancy Classes for Undergraduates and Postgraduates Classes for Undergraduates and Postgraduates

3 Department of Electrical Engineering IIT Kharagpur Equipments In the Laboratory

4 Department of Electrical Engineering IIT Kharagpur Transformer Oil Test Kit 60 kV Transformer Oil Test Kit 60 kV High Voltage AC Test Source High Voltage AC Test Source 10 kVA, 0.2 / 200 kV, 50/0.05 A, 50 Hz 10 kVA, 0.2 / 200 kV, 50/0.05 A, 50 Hz Impulse Voltage Generator Impulse Voltage Generator 600 kV, 18 kJ 600 kV, 18 kJ

5 Department of Electrical Engineering IIT Kharagpur Impulse Current Generator Impulse Current Generator 15 kA, 5 kJ 15 kA, 5 kJ Partial Discharge Measurement Partial Discharge Measurement Capacitance and Tan Delta Measurement Capacitance and Tan Delta Measurement Up to 12 kV level Up to 12 kV level

6 Department of Electrical Engineering IIT Kharagpur Rectangular Current Pulse Generator Rectangular Current Pulse Generator 120 A, 15 ms,4.5 kJ 120 A, 15 ms,4.5 kJ High voltage DC source High voltage DC source 10 kV, 0.3 A 10 kV, 0.3 A Sphere Gap 50 cm diameter Sphere Gap 50 cm diameter Point, Plane, Sphere Electrodes 200 kV Point, Plane, Sphere Electrodes 200 kV

7 Department of Electrical Engineering IIT Kharagpur Distribution Transformers Distribution Transformers 25 kVA, 11 kV/400 V, 50 Hz 25 kVA, 11 kV/400 V, 50 Hz 100 kVA, 11 kV/433 V, 50 Hz 100 kVA, 11 kV/433 V, 50 Hz Pressure and temperature Measurement Pressure and temperature Measurement Three Phase Variac Three Phase Variac 415/0-470 V, 200 A, 50 Hz 415/0-470 V, 200 A, 50 Hz

8 Department of Electrical Engineering IIT Kharagpur Single Phase Variac Single Phase Variac 240/0-270 V, 28 A, 50 Hz 240/0-270 V, 28 A, 50 Hz Measuring Equipments Measuring Equipments Oscilloscopes : 25 GS/s, 150 MHz Oscilloscopes : 25 GS/s, 150 MHz 1 GS/s, 500 MHz 1 GS/s, 500 MHz 1 GS/s, 100 MHz 1 GS/s, 100 MHz Current Probes : 2000 A(peak), 400 volts Current Probes : 2000 A(peak), 400 volts Electrometer : 2 V V, 20 pA – 20 mA, 2 k Ω – 200 G Ω, Electrometer : 2 V V, 20 pA – 20 mA, 2 k Ω – 200 G Ω, 20 nCoulomb – 20 μCoulomb 20 nCoulomb – 20 μCoulomb

9 Department of Electrical Engineering IIT Kharagpur Various Activities of the Laboratory

10 Department of Electrical Engineering IIT Kharagpur Impulse Tests on Transformers Impulse Voltage Generator 600 kV, 18 kJ

11 Department of Electrical Engineering IIT Kharagpur Corona discharges and breakdown Observations Sphere – Sphere Sphere – Sphere Point – Plane Point – Plane Plane – Plane Plane – Plane Point – Point Point – Point High Voltage AC Test Source 10 kVA, 0.2 / 200 kV, 50/0.05 A, 50 Hz

12 Department of Electrical Engineering IIT Kharagpur Partial Discharge Measurements of Transformer windings and Cables Amount of Partial Discharge Amount of Partial Discharge Source of Partial Discharge Source of Partial Discharge

13 Department of Electrical Engineering IIT Kharagpur Condition Monitoring Of Transformers  HVAC testing up to 50 kV, 100 mA AC  Acoustic based Partial Discharge measurement up to 50 kV

14 Department of Electrical Engineering IIT Kharagpur Capacitance Measurement of Cables Capacitance and Tan delta measurement set up

15 Department of Electrical Engineering IIT Kharagpur Compaction of Nanomaterials using Rectangular Pulse Generator ( 120 Amps, 15 msec, 4.5 kJ) Current Pulse at 122 A level

16 Department of Electrical Engineering IIT Kharagpur Design of Super Conducting Cables (CIC Type) Sponsored R&D project by Institute of Plasma Sponsored R&D project by Institute of Plasma Research (IPR), Gujarat under National Fusion Research (IPR), Gujarat under National Fusion Program (NFP) Program (NFP) To be used for Fusion Grade Magnets To be used for Fusion Grade Magnets

17 Department of Electrical Engineering IIT Kharagpur Electroporation of microbial cells 10 kV, 0.2 amp Impulse voltage Generator 10 kV, 0.2 amp Impulse voltage Generator Sterilization of food and water by killing bacteria cell membrane Sterilization of food and water by killing bacteria cell membrane Electrostatic separation of carbon from fly ash 10 kV HVDC source for separation 10 kV HVDC source for separation Collects carbon from fly ash Collects carbon from fly ash

18 Department of Electrical Engineering IIT Kharagpur Transformer oil Testing Transformer oil Testing Finding out breakdown strength of oil Finding out breakdown strength of oil Insulation testing and finding surface Insulation testing and finding surface resistance of various insulators resistance of various insulators Sources calibration and testing for other Sources calibration and testing for other departments departments Doctoral work in the area of electrical field Doctoral work in the area of electrical field computations employing Charge Simulation computations employing Charge Simulation Method Method