Datasheet

19
TS 46365 OSRAM / POWERSTAR HQI 106_T001_GB 2/22.04.2009
Fusing:
HQI
®
lamps must be protected by slow acting fuses. If
fuse wire is used it is sufficient for it to be rated at twice
the rated current of the lamp. If automatic cutouts are
used they should have characteristic “C”. If adjusted to
the upper limit value of 10 x rated current there will be
no triggering if fuse protection is at twice the rated lamp
current.
Restarting:
The lamps will restart only after they have cooled down
for 2 to 15 minutes.
Instant restarting with suitable igniters is possible for:
c HQI-TS < 400 W
 c HQI-TS 1000 W/D/S and 2000 W/D/S (short arc)
c HQI-TS 2000 W/D/L (long arc)
The necessary surge voltage is 25 to 60 kVs.
Lampholders:
Because of the high voltages involved in ignition the
lampholders must be designed for these high voltages.
Lampholders that meet these requirements are available
from appropriate manufacturers.
Power reduction:
Dimming metal halide lamps is not recommended.
OSRAM cannot provide a guarantee for dimmed
lamps.
Dimming adversely affects colour rendering. The colour
location shifts towards colder light colours and the colour
spread increases. Dimmed lamps also tend to flicker. Lu-
minous flux maintenance is significantly worse as a result
of dimming. Dimming can shorten the life of the lamps.
End of life:
To protect the control gear and to avoid radio inter-
ference, high-pressure discharge lamps must be replaced
as soon as they come to the end of their life.
These lamps reach their end of life when
 c the light colour of the lamp changes dramatically
c there is a significant loss of brightness
c the lamp no longer ignites
c the lamp starts to cycle (periodically goes out and
ignites again).
At end of lamp life the risk of a broken burner rises.
This phenomena is caused by effects not dependent on
the manufacturer like the rectifying effect mentioned ear-
lier. Because of this we strongly recommend to change
the lamp latest after average lifetime has been reached or
if one of the above mentioned effects are shown.
Notes on disposal:
All metal halide lamps contain small quantities of mercury.
If they break, poisonous mercury vapour may be released.
The lamps must be treated as waste requiring special
supervision with EEC code 20 01 21* for waste or residue
containing mercury and should be passed to a relevant
collection or recycling company.
Guarantee:
A guarantee can only made if suitable control gear is used
and the defined operating conditions are met.
Safety:
OSRAM high-pressure lamps meet the safety require-
ments defined in IEC 62035.
All HQI lamps with outer bulb are of UV reduced
design and comply with necessary limits
(ACGIH < 2 mW/1000 Im).
Because of their high operating pressure all HQI-lamps
may only be used in fully enclosed luminaires designed to
take them:
c All HQI
®
-TS
c All HQI
®
-T
c All HQI
®
-E > 250 W
As we cannot completely rule out the possibility of the
bulb bursting, luminaires for the lamps mentioned above
must be equipped with sealed shatter-proof shields that
can withstand wide fluctuations in temperature.
Operating lamps with a damaged outer bulb is dangerous
and therefore not permitted. Exception: HQI
®
-TS ...
without an outer bulb.
Lamp operation:
Operating high-pressure lamps for short periods in combi-
nation with frequent on/off switching will shorten their life.
This applies to both cold starting and hot restarts. The
lamps should be operated for at least 3 hours and should
remain off for at least 30 minutes. This applies in partic-
ular to HQI
®
= 1000 W.
Exceptions:
The following lamps are suitable for open luminaires:
c All HQI
®
-E 70 W to 150 W
c All HQI
®
-E/P
The use of shields should be considered for safety
reasons in each case.
Luminaire design:
Luminaire design (thermal design and fuse protection)
should be based on the EN 60598-1 standard.
HQI
®
1000 W to 2000 W lamps should be held without
pressure or by means of a lamp support close to the
base-free end.