Stacked Ring Insulator Breakdown

Calculate: Breakdown Voltage Output Format Notes

Definition:

Equation

Parameters

Diagram

Source: 1992 Pulsed Power Formulary (Power Modulator Symposium)

For Acrylic insulators in vacuum with 45 degree bevel

Assumes pressure below 10^-4 Torr

Variations observed at pressures as low as 10^-6 Torr

Typical for 1-2" long insulators and more that 5 insulators

Dependence of breakdown field on angle of oiled plexiglass:

(from Pulsed Breakdown of Insulator Surfaces in a Poor Vacuum by I.D.Smith, 1966)

	Parameter	Value	Units	Special Values
Inputs:	t (pulse width)
	d (length)
	r (ave. radius)
	N (#insulators)

Output:	V(breakdown)

Parameter

Value

Units

Special Values

Inputs:

Output:

Notes: top

Definition:

Equation

Parameters

Diagram

Calculate Breakdown Electric Field of Acrylic: top

Output Format: top

Source: 1992 Pulsed Power Formulary (Power Modulator Symposium)
For Acrylic insulators in vacuum with 45 degree bevel
Assumes pressure below 10^-4 Torr
Variations observed at pressures as low as 10^-6 Torr
Typical for 1-2" long insulators and more that 5 insulators
Dependence of breakdown field on angle of oiled plexiglass:

	(from Pulsed Breakdown of Insulator Surfaces in a Poor Vacuum by I.D.Smith, 1966)