The spheres
spark-gap, are the instruments more used and low cost to measure a high voltage, with industrial frequency voltage, or continous or
impulsive voltage.
The
spark-gap can be realized in 2 different executions:
Spheres
diameter:
125mm 250mm
Peak
voltage:
146
kV 275 kV
Spheres
diameter:
250mm
500mm
750mm 1000mm
Peak
voltage:
275
kV 515
kV 750
kV 1010 kV