NEN - NPR-EN-IEC 60890
A method of temperature-rise assessment by extrapolation for partially-tested assemblies (PTTA) of low-voltage switchgear and controlgear
inactive, Most Current
| Organization: | NEN |
| Publication Date: | 1 September 2002 |
| Status: | inactive |
| Page Count: | 60 |
| ICS Code (Low voltage switchgear and controlgear): | 29.130.20 |
scope:
Applies to low-voltage switchgear dealt with in IEC Publication 439-1 and the rules for type testing of temperature rise. For technical or economical reasons, this test is performed on some assemblies only, called PTTA (partially type-tested assembly). For the purpose of assessment of the behaviour of the whole equipment, calculation methods including an appendix with examples are dealt with.
Document History
NPR-EN-IEC 60890
September 1, 2002
A method of temperature-rise assessment by extrapolation for partially-tested assemblies (PTTA) of low-voltage switchgear and controlgear
Applies to low-voltage switchgear dealt with in IEC Publication 439-1 and the rules for type testing of temperature rise. For technical or economical reasons, this test is performed on some...