Arresters installed in substations act as post insulators. They must withstand cantilever stresses from line tension, terminal connections, short-circuit forces, and seismic accelerations.

The Shift From Line Discharge Classes to Charge Classification

Compliance with IEC 60099-5 ensures that:

Before selecting an arrester, the user must define the environmental and electrical environment. IEC 60099-5 outlines how to account for:

Acquiring official IEC standards is a straightforward but paid process. Here is a step-by-step guide.

Specifically for systems with rated voltages 52 kV and below, as defined in IEC 60099-6. Externally Gapped Line Arresters (EGLA):

IEC 60099-5 serves as an exhaustive application engineering blueprint. While related standards like IEC 60099-4 outline the strict production testing and hardware parameters for manufacturers, Part 5 shifts perspective directly to the . Scope and Systems Covered

Methods to calculate or estimate the energy (charge) an arrester will face during lightning or switching events. Environmental Factors: