built-in appliance: fixed appliance intended to be installed in a cabinet, in a prepared recess in a wall or in a similar location. Here, because the appliance must be installed in a reserved position (usually a cubic space with only one side open), it is a fixed installation and can be regarded as a fixed…
fixed appliance: appliance that is intended to be used while fastened to a support or while secured in a specific location. The definition emphasizes fastening to a bracket or fixing in a specific position. Generally, we think that this kind of fixation requires some installation actions and some fixing devices, these devices can be fixed…
stationary appliance: fixed appliance or an appliance which is not a portable appliance. Stationary appliance includes fixed appliance and not a portable appliance. The characteristic of a stationary appliance is that once it is put into use, it will be placed in a fixed position. At the same time, the position of the appliances will…
hand-held appliance: portable appliance intended to held in the hand during normal use. Hair dryers, electric irons, hand-held vacuum cleaners, etc. are typical examples of hand-held appliances.
portable appliance: appliance that is intended to be moved while in operation or an appliance, other than a fixed appliance, having a mass less than 18 kg. This item is relatively easy to understand. Products that are less than 18kg are relatively light, so they are easy to move during operation, including humidifiers, fans, air…
protective extra-low voltage circuitportable appliance => portable appliance: earthed circuit operating at safety extra-low voltage which is separated from other circuits by basic insulation and protective screening, double insulation or reinforced insulationNOTE 1 Protective screening is the separation of circuits from live parts by means of an earthed screen.NOTE 2 A protective extra-low voltage circuitportable appliance => portable appliance…
trasformatore di isolamento di sicurezza: trasformatore il cui avvolgimento di ingresso è separato elettricamente da quello di uscita mediante un isolamento almeno equivalente al doppio isolamento o all’isolamento rinforzato, destinato ad alimentare un apparecchio o un circuito a bassissima tensione di sicurezza Il trasformatore qui menzionato viene utilizzato per fornire alimentazione ad apparecchi o circuiti….
bassa tensione di sicurezza: tensione non superiore a 42 V tra i conduttori e tra conduttori e terra, la tensione a vuoto non superiore a 50 V. Quando dalla rete di alimentazione si ottiene una bassissima tensione di sicurezza, deve avvenire attraverso un isolamento di sicurezza trasformatore o convertitore con avvolgimenti separati, il cui isolamento…
bassa tensione: tensione fornita da una sorgente interna all’apparecchio che non supera i 50 V tra conduttori e tra conduttori e terra quando l’apparecchio è alimentato alla tensione nominale Secondo la definizione della Direttiva UE sulla bassa tensione, la bassa tensione varia da 50-1000 V per CA e 75-1500 V per CC. A proposito, la…
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