It is the difference of temperature of the coil windings within an operating electromagnetic ballast compared to when it is in an off status.
It is the increase of winding temperature at 110% mains voltage when the starter is short circuited.
It is the maximum temperature allowed for the windings in an electromagnetic ballast. When the temperature higher then Tw (130 or 140 degrees, depending on the ballast type), the isolation around the wire can be damaged.
It is the temperature specified for the product as maximum allowed surrounding temperature in the luminaire. The Ta (ambient temperature) of electromagnetic ballast is therefore approx. Tw-ΔT.
It is for thermal protection against overheating. This prevents the ballast damage when the lamp reaches end of life.
It determines the amount of current that is consumed by a system. When the PF is low the current consumption is high. The PF can be improved by a PF capacitor or reactor (depend on PF character).
These ballasts are designed to be used in class II luminaires.
Raw material prices are growing, manufacturers of luminaires are looking for cheaper alternatives to improve their own competitiveness. Alternatives having equal or better performance. Because that MST decided to develop the new product platform based on aluminum wire. Years of experience in this field and positive users feedback unequivocally confirm the correctness of technological solutions adopted in the most critical elements of aluminium wire ballast design.
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