1 Scope
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Construction
6 Electrical characteristics
6.1 GDT spark-over voltage
6.2 GDT glow voltage
6.3 GDT arc voltage
6.4 GDT d.c. holdover voltage
6.5 GDT capacitance
6.6 GDT oscillation
7 Electrical ratings
7.1 GDT surge current capability
7.2 AC discharge current test
8 Application examples
8.1 Two-electrode and three-electrode GDT comparison
8.2 Surge bonding
8.3 GDT pass under protection for a.c. fault conditions
8.4 GDTs in a.c. mains applications
8.5 Hybrid protectors
8.6 GDT thermal switch hybrid
8.7 GDT backup air gap (BUG) hybrid
8.8 Cascaded protection
8.9 Series connected GDTs for d.c. power applications
Bibliography