Zidazi zimatengera kuyeserera kwamagetsi ophatikizika amagetsi otsika kwambiri amagetsi a SPD II, omwe amatha kupanga voteji (1.2/50μs) ndi impulse current (8/20μs), amagwiritsidwa ntchito poyesa kalasi ya III ndikuchepetsa kuyesa voteji. za SPD ndi zigawo.