BS EN IEC 60099-8:2018 PDF

Standard No.: BS EN IEC 60099-8:2018
Release Date: 2018
Published By: British Standards Institution (BSI)
Latest: BS EN IEC 60099-8:2018

Scope: What is BS EN IEC 60099-8 – Externally gapped line arresters (EGLA) about? BS EN IEC 60099-8 is the eighth part of the IEC 60099 multi-series that discusses surge arresters. BS EN IEC 60099-8 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA)) that are applied on overhead transmission and distribution lines, only to protect insulator assemblies from lightning-caused flashovers. BS EN IEC 60099-8 defines surge arresters to protect the insulator assembly from lightning-caused over-voltages only. Considering the particular design concept and the special application on overhead transmission and distribution lines, some unique requirements and tests are introduced, such as the verification test for coordination between insulator withstand and EGLA protective level, the follow current interrupting test, mechanical load tests, etc. Note1: Since metal-oxide resistors are not permanently connected to the line, the following items are not considered for BS EN IEC 60099-8 : Switching impulse spark-over voltage Residual voltage at steep current and switching current impulse Thermal stability

BS EN IEC 60099-8:2018 history
2018 BS EN IEC 60099-8:2018 Surge arresters. Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a.c. systems above 1 kV