NEN 10890
A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear
inactive, Most Current
| Organization: | NEN |
| Publication Date: | 1 March 1997 |
| 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 and appendix with examples are dealt with.
Document History
NEN 10890
March 1, 1997
A method of temperature-rise assessment by extrapolation for partially type-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...