Research on the Effect of Metal Electrode Coupling Voltage under Induced Electrostatic Discharge

Table 1

The induced threshold of different discharge needle lengths when electrode spacing was 3 mm.

The length of needle electrode (mm)	87 (kV/m)	72 (kV/m)	65 (kV/m)	53 (kV/m)
900	4.0	4.1	4.4	4.5
750	4.2	4.25	4.5	4.55
600	4.3	4.4	4.58	4.6
450	4.4	4.6	4.66	4.7
300	4.5	4.7	4.72	4.8

The threshold without external field discharge is 4.9 kV.