Roger Edelson, MSEE, Power Partners Inc., Berkeley, Calif. and DION NERI, EE, MCG Surge Protection, Deer Park, N.Y.

Articles

Codes and Standards December 1, 2007

High Headroom or How to Prevent Premature SPD Death

Low headroom can be uncomfortable in a vehicle, but in a surge protection device (SPD), it can result in the destruction of the protector. Knowing where to set headroom in terms of a protector's turn-on point is the first step in protecting one's investment. The specified clamping voltage of SPDs should be as close to the value of the AC input power as possible.

By Roger Edelson, MSEE, Power Partners Inc., Berkeley, Calif. and DION NERI, EE, MCG Surge Protection, Deer Park, N.Y.