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Normas BSI – AENOR
BS EN 60745-2-4:2009+A11:2011

BS EN 60745-2-4:2009+A11:2011

Hand-held motor-operated electric tools. Safety. Particular requirements for sanders and polishers other than disk type

Fecha Anulación:
2019-10-29 /Withdrawn
Comité:
CPL/116
Equivalencias internacionales:

EN 60745-2-4:2009/A11:2011

EN 60749-4:2017

IEC 60749-4:2017

Relación con otras normas BSI:

Reemplazada por: BS EN 62841-3-10:2015

Reemplazada por: BS EN 62841-2-4:2014

Reemplazada por: BS EN 62841-2-2:2014

Reemplazada por: BS EN 62841-3-1:2014

Reemplazada por: BS EN 62841-2-9:2015

Reemplazada por: BS EN 62841-3-6:2014

Reemplaza a: BS EN 60745-2-4:2003+A1:2009

Resumen:
IEC 60749-4:2017(E) provides a highly accelerated temperature and humidity stress test (HAST) for the purpose of evaluating the reliability of non-hermetic packaged semiconductor devices in humid environments. This edition includes the following significant technical changes with respect to the previous edition:
a) clarification of requirements for temperature, relative humidity and duration detailed in Table 1;
b) recommendations that current limiting resistor(s) be placed in the test set-up to prevent test board or DUT damage;
c) allowance of additional time-to-test delay or return-to-stress delay.
Keywords:
Safety measures, Machine tools, Performance testing, Sanders, Electrically-operated devices, Polishing, Electrical safety, Portable machine tools, Equipment safety, Surface treatment, Electric motors
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