Multiple cable injection transient test system

This paper deals with the problem of performing an EMP test on a large weapons facility containing six critical conduits. These conduits are positioned in various configurations at sites across the United States and can cover an area of 100000 square feet. Rather than maintaining a large trestle system to illuminate this area with the required EMP pulse, an analysis was performed to determine the worst case current levels and voltage waveforms that could be induced onto the conduits. This analysis showed that a standard bulk current injection test technique would not sufficiently represent a real-world event. Specifically, the analysis determined that all six conduits must be excited within 100 ns to be considered representative. In order to meet this requirement, R&B developed the EM101AX, which consists of six pulsers capable of firing between 2.5 kV and 10 kV, and a central control unit capable of triggering all six units within 100 ns