OSRAM HALOTRONIC-PROFESSIONAL HTL - Manual (Page 11)

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3.6 Dimming HALOTRONIC ® can be controlled with various dimmers depending
on the model.
Table 2
3.7 Short-circuit protection HALOTRONIC ® transformers protect themselves against the effects
of a short-circuit on the secondary side.
All the units have electronic cut-outs. These ensure that the units will
not be destroyed by a short-circuit
) . The units will be fully operational
again once the cause of the short-circuit has been eliminated.
3.8 Overload/overtem- HALOTRONIC ® units are equipped with electronic overload protec-
perature protection tion. Even if the overload persists, there will be no damage to the unit.
The output power is either reduced or automatically disconnected.
For a 2 m long cable, the overload protection circuit will be triggered
at around twice the maximum permissible load
) .
If external heat source cause the temperature at the unit to exceed
the specified maximum, they will automatically reduce their output to
protect themselves). The user will notice a drop in the luminous flux
of the lamps supplied by the transformers.
3.9 Safety, electrical isolation HALOTRONIC ® transformers meet the requirements relating to safety
transformers for safety extra-low voltage 2) .
The dielectric strength (electrical isolation) between the primary and
secondary sides is tested on each unit at a voltage of 4 kV.
The transformers are also constructed and approved in accordance
with EN 6347- & EN 6347-2-2 (Electronic Converters, Safety).
) Applies only if supplied with 50 Hz ac voltage (the HT ... L family is suitable for
dc or ac voltage)
2) SELV or SELV equivalent
Phase control dim-
mer (leading edge) Phase control dim-
mer (trailing edge)
HT 70/230/2 L x
HT 05/230/2 L x
HT 50/230/2 L x
HT 20/230/2 L x
HT 20/230-240/2 LF x
HTN 75/230-240 I a. S x
HTM 70/230-240 x x
HTM 05/230-240 x x
HTM 50/230-240 x x
HT 50/230-240/2 SB x