3.1.5 Internal ESD Protection circuits
RADWIN equipment is designed to meet the ETSI/FCC/Aus/NZ/CSA EMC and Safety requirements. To fulll
these requirements, the system's Telecom lines at the radio unit/PoE are Transformer‐isolated and include
internal ESD (Electro‐Stac‐Discharge) Protecon circuits.
When installing an AC powered SU: To maintain Overvoltage (Installaon)
Category II, install a suitable surge suppressor device in the branch circuit to limit
expected transients to Overvoltage Category II values.
The limits are based on IEC60664 and are also located in Table 2H of UL60950 (for
mains <= 150V, the transient rang is 1500V; for 150V < mains <= 300V, the
transient rang is 2500V; and for 300V < mains <=600V, the transient rang is
4000V).