OSRAM HALOTRONIC-PROFESSIONAL HTL User Manual

Page 9

3.3 Operation on dc supplies The models indicated by the symbol = or 0 Hz in the technical data

can be operated on a dc supply and are therefore suitable for use in
emergency lighting to VDE 008. Lamps connected to HALOTRONIC

transformers emit the same luminous flux whether an ac or dc supply
is used. The permissible dc voltage range is 54 V to 244 V

)

3.4 Permissible temperature HALOTRONIC

transformers operate reliably within the temperature

range

range specified for each particular model (see technical data). Exces-
sive temperatures will cause electronic components to fail prematu-
rely and the transformer will not be able to achieve its specified life
expectancy.

Table

)

Below 207 V the safety protection in case of overload (e.g. additional lamp load)

is not provided anymore.

Model Separate converters

HT 70/230/2 L

60 °C

75 °C

HT 05/230/2 L

50 °C

80 °C

HT 50/230/2 L

55 °C

80 °C

HT 20/230/2 L

50 °C

80 °C

HT 20/230-240/2 LF

45 °C

80 °C

HTN 75/230-240/2 I

50 °C

85 °C

HTM 70/230-240

50 °C

80 °C

HTM 05/230-240

45 °C

85 °C

HTM 50/230-240

45 °C

80 °C

Built-in converters
HT 50/230-240/2 SB

70 °C

00 °C

HTN 75/230-240 S

50 °C

85 °C

: maximum permissible ambient temperature

: maximum permissible temperature at the control point of the transformer