The specifications described hereunder apply to all the standard products of Schwabe Hellas S.A.. Alterations or modifications can be effected at the customer’s request, within International Standards according to which all our products are manufactured.
Two types of terminals can be provided with Schwabe Hellas Ballasts:
For connection to solid core or multi-stranded cable Ø 0.5mm² till 2.5mm².
Push-in (automatic/screwless) Terminals:
For connection to solid core cable Ø 0.5mm² till 1.5mm².
The terminals and all other plastic parts are constructed with non flammable material and have passed the needle flame and glow wire tests which apply to terminals used on Ballasts and transformers.
Depending on the requirements of the customer, earthing can be obtained on the Ballast fixing holes or, if requested, with an earth screw provided on the Ballast.
The Schwabe Hellas logo is:
is the maximum tolerated temperature on the Ballast winding under constant operation.
Schwabe Hellas Ballasts indicate tw 130 which ensures a life span for more than 10 years under constant operation and under normal operating conditions.
Dt normal is the increase of the temperature on the Ballast winding under normal operating conditions.
It is useful to estimate the maximum ambient temperature with the Dt and tw values.
The ambient temperature ta is determined with the equation ta = tw – Dt
For example: If tw = 130 and Dt = 55, then ta = tw – Dt = 130 – 55 = 75
therefore the maximum tolerated ambient temperature under normal operating conditions in this case would be 75° C.
Dt abnormal is the increase of the temperature on the Ballast winding under abnormal operating conditions.
Dt cap is the increase of the temperature on the Ballast winding under normal operating conditions with capacitor in series connection (optional).