[国外标准] BS EN 60664-1-2007 Insulation coordination for equipment within low-voltage systems — Part 1 Princip
[国外标准] JIS E3021-1999 Insulation resistance and withstand voltage testing methods of parts for railway sign
[国外标准] JIS C1302-2002 Insulation resistance testers
[国外标准] JIS C0704-1995 Insulation test for control gear
[国外标准] JIS C0664-2003 Insulation coordination for low-voltage equipment Part 1：Principles,requirements and