Clearance Calculator

Primary & Primary to Secondary Circuits / Secondary Circuits

Table 2H, 2J, and 2K of IEC 60950
Insulation
Pollution Degree
Nominal AC Mains
Enter Working Voltage   Vpeak or Vdc
Peak Repetitive Voltage   Vpeak [Table 2J - Usually not applicable]

Circuit Type 

Quality Control Program? No Yes

 

This program  is based on Table 2H, 2J, and 2K of IEC 60950. Select the Insulation, Pollution Degree, Nominal AC Mains, enter the Working Voltage (peak or dc), enter the Peak Repetitive Voltage, if this is applicable, then click on the button to get the corresponding Clearance in mm and mils.  

 

Interpolation Note:  This calculator performs linear interpolation between 2800 V peak or d.c. and 42000 V peak or d.c. per Note 3 of Table 2H. I'm working on a version that will include the alternate method in Annex G.