The Glow-Wire Test is strictly mandatory for industrial electrical panels when it is necessary to certify the resistance to abnormal heat of insulating materials that hold active parts in position. Compliance with safety requirements for CE marking requires irrefutable technical evidence. According to the provisions of the general standard IEC/EN 61439-1, plastic supports in direct contact with current-carrying components must pass the glow-wire test at the severe temperature of 960 °C, while for enclosures and remaining insulating barriers, the thermal limit for passing the test is set at 650 °C.
The execution of this specific thermal measurement is conducted within the INTEK laboratory using metrological instrumentation calibrated in strict accordance with the IEC/EN 60695-2-11 standard. Our technicians simulate the effects produced by heat sources, such as loose connections or overloaded resistors, by applying a glowing filament to the plastic sample for a duration of 30 seconds. During the provision of the testing service, the absence of persistent flames or their immediate extinction is certified, while simultaneously verifying that any dripping of molten material does not ignite an underlying layer of tissue paper, thus validating the absence of fire propagation.
Affidare le valutazioni sull’infiammabilità a una struttura di testing indipendente garantisce ai costruttori di quadri e automazione industriale la totale conformità del prodotto e l’eliminazione dei rischi normativi. Ottenere un rapporto di prova ufficiale previene il cedimento strutturale delle apparecchiature in tensione, minimizzando le probabilità di cortocircuito in esercizio e proteggendo il produttore da contestazioni tecniche durante la commercializzazione.
