1 Scope
2 Definitions
3 Service conditions
3.1 Normal service conditions
3.2 Unusual service conditions
4 Standard design test criteria
4.1 General
4.2 Ambient
4.3 DC breakdown voltage test
4.4 Capacitance test
4.5 Insulation resistance test
4.6 Impulse breakdown voltage test
4.7 Maximum single impulse discharge current test
4.8 Impulse life
4.9 AC discharge current test
4.10 Alternating follow-current test
4.11 DC holdover test for two-electrode devices
4.12 DC holdover test for three-electrode devices
4.13 Transition time test
4.14 Impulse transverse voltage test
4.15 AC transverse voltage test
4.16 Voltage-current characteristic test
4.17 Backup air gap devices
4.18 Failure mode
4.19 Fail-safe operation
Annex A (informative) Bibliography