11. Selecting LV Power Line SPDs · Page 1 of 7
Data You Need Before Selecting
Gather electrical and installation facts first.

Electrical data
System voltage, earthing system, frequency, fault level, and whether supply is AC or DC.
Exposure data
LPS present? Overhead lines? Cable length from upstream board? Prior damage history?
Operational data
Need remote signaling? Pluggable cartridges? Available modules in the board?
