International Standards and Conformity Assessment for all electrical, electronic and related technologies

SC 77C

High power transient phenomena


SC 77C Scope

“Standardization in the field of electromagnetic compatibility to protect equipment, systems and installations from intense but infrequent high power transient phenomena including: the electromagnetic fields produced by nuclear detonations at high altitude (High Altitude Electromagnetic Pulse (HEMP)); sources of Intentional Electromagnetic Interference (EMI); and Geomagnetically Induced Currents (GIC) from solar activity.

Lightning and other transient phenomena are excluded from the scope of SC 77C.”

Further information

United Kingdom
SC 77C Officers