International Electrotechnical Commission
Glossary

Terms defined in IEC 62790


3.1module junction box
3.1.1junction box for re-opening
3.1.1.1junction box for factory wiring
3.1.1.2junction box for field wiring
3.1.2junction box
3.2cable gland
3.3sealing
3.4spout hub
3.5cable anchorage
3.6connector for photovoltaic-systems
3.7intended use
3.8terminal
3.9clearance
3.10creepage distance
3.11overvoltage category
3.12pollution
3.13pollution degree
3.14rated voltage
3.15rated insulation voltage
3.16rated impulse voltage
3.17impulse withstand voltage
3.18r.m.s. withstand voltage
3.19.1rated current
3.19.2reverse current
3.20functional insulation
3.21basic insulation
3.22supplementary insulation
3.23double insulation
3.24reinforced insulation
3.25working voltage
3.26comparitive tracking index
3.27accessible part