Experiment - 5
To Study the effect of different shape of electrodes on dielectric (air) breakdown.
1. High Voltage Transformer
2. HV Control Desk
3. Flat Electrode
4. Disk Electrode
5. Pointed Electrode
- Place the High Voltage transformer unit about 7 feet away from the control unit.
- The control unit is connected to supply voltage taking care that the earth connections are effective.
- The multiple point control switch is set at its lowest tapping.
- The push button on control unit is pressed firmly for at least 5 seconds. Note that no Breakdown to occurs, in which case button should be released at once without delay. Break down is indicated by a continuous discharge across the gap and meter indicating a sudden voltage drop.