微动开关两触点间的爬电距离是多少？
微动开关两触点间的爬电距离是多少？ 下文出自EN6105820.1.5.2 Micro-disconnection
Clearances between terminals and terminations shall fulfil the requirement for functional
insulation according to 20.1.2.
No clearances are specified for the distance across the contacts.
Clearances between other current-carrying parts which are separated by the action of the
switch shall be equal to or greater than the actual value of the distance between the relevant
contacts. They shall, however, be at least 0,5 mm for switches with a rated impulse withstand
voltage of ≥1,5 kV. “In a portable product using a fractional horsepower motor rated 300 volts or less, the spacing through air or over surface may
be 3/32 inch (2.4 mm) minimum; and if the motor rating does not exceed either 1/3 horsepower (250 watts output) or 150 volts,
the spacings may be 1/16 inch minimum.“
是不是功率小于250W的电动器具，电路板的间距也按1.6mm？
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