High altitude electromagnetic pulse protection meets Mil-Std-188-125-1A

Independent testing was by Jaxon Engineering and Maintenance of Colorado Springs (Jaxon team left).

The filters span 16A to 1.2kA and including two, three and four-line options. They are designed to comply with E1 and E2 pulse current injection and shielding effectiveness requirements. For higher current requirements, 1.2kA units can be paralleled to 6kA.

Inductive inputs are used for good continuous wave performance and transient handling, even when supplied from low impedance suources.

“Radically different to MPE’s previous HEMP filters,” according to the company, “these Mil-Std-1A compliant filters feature single-line modular elements which are line-replaceable and may be added to, allowing for future expansion. The provision of external mounting feet, and separate input and output enclosures, simplifies installation.”

Applications are foreseen protecting critical national infrastructure from the effects of intentional electromagnetic interference.

MPE has Approved Exporter status from UK HMRC “and utilises a specialist freight forwarding partner to ensure the swift transportation of goods”, it said. Crate packaging (right) includes devices that cannot be tipped without leaving evidence of mishandling.

As an example of size, each of the four channels in the four-channel 32A version pictured at the top measures 430 x 180 x 165mm.

Find the Mil-Std-188-125-1A HEMP filters here and their test certificates here

US legislation for critical national infrastructure EMP protection is here