Стр. 462 - OSRAM_lamp_2014

Упрощенная HTML-версия

9.122
Installation and operating instructions
Cable routing
For reasons of interference suppression, the power
cable should not be laid parallel to the casing and/or the
secondary cable. This will avoid high-frequency coupling
effects.
Measurement of secondary voltage
Standard multimeters with appropriate accuracy can be
used.
POWERTRONIC
®
The maximum cable lengths between the lamp and
POWERTRONIC
®
depend on the type of cable and how
it is routed. The following maximum cable lengths can be
used as guidelines:
max. cable length with AC operation
PTo 35/220-240
1.5 m
PTo 50/220-240 3DIM
1.5 m
PTo 70/220-240 3DIM
1.5 m
PTo 100/220-240 3DIM
1.5 m
PTo 150/220-240 3DIM
1.5 m
PTo 250/220-240 3DIM
1.5 m
PTi 20/220-240 S/B
0.5 m
PTi 20/220-240 I
1.5 m
PTi 35/220-240 S/B MINI
0.5 m
PTi 35/220-240 S/I/B
1.5 m
PTi 2x35/220-240 S/I
1.5 m
PTi 50/220-240 S/I/B
1.5 m
PTi 70/220-240 S/I/B
1.5 m
PTi 2x70/220-240 S/I
1.5 m
PTi 100/220-240 S/I
1.5 m
PTi 150/220-240 S/I
1.5 m
PT-FIT 35/220-240 S/I/B
1.5 m
PT-FIT 50/220-240 S/I/B
1.5 m
PT-FIT 70/220-240 S/I/B
1.5 m
PTg 1000/400
0.8 m
7. Faults in infrared control/transmission systems
Fluorescent lamps have an emission in the wavelength
range which is also used for infrared transmission and
which can be affected by the lamp. Since the IR receivers
used are largely non-selective, interference may occur
in the IR system. The operating frequency of the ECGs
is between 20 and 120 kHz. The light emitted from the
fluorescent lamp is modulated at twice the operating
frequency. Interference is produced by signals in the
same frequency range.
Exception: Interference is not expected with
POWERTRONIC
®
, HALOTRONIC
®
or OPTOTRONIC
®
.
IR remote control
Systems operating at a sufficiently high carrier frequency
(400 to 1500 kHz) are unlikely to suffer interference.
Sound transmission
Up to now the carrier signal frequency for sound trans-
mission has been 95 kHz and higher, which has led to
serious disturbance from the 3rd, 5th and 7th harmonics
of the ECG operating frequency (20 to 120 kHz in normal
operation and up to 100 kHz with dimming). Headphone
manufacturers have adopted higher frequencies such as
2.3 MHz and 2.8 MHz.
Simultaneous interpreting systems also operate in the
95 kHz to 250 kHz range so it is best not to use the first
six transmission channels, particularly channel 1, of the
32 available channels since these are likewise affected by
the harmonics of the basic ECG frequencies.
High-frequency ripple control
The carrier frequencies used are around 120 kHz.
Transmission can be adversely affected by radio
interference suppression capacitors which are included in
all ECGs and other electronic loads, such as the power
supplies of PCs.
Paging systems
Generally only HF paging systems (operating in the MHz
range) should be used. If inductive paging systems are
used (25 to 40 kHz) reliable operation is not possible.
Electronic merchandise security systems
In many shops nowadays, merchandise such as DVDs,
hifi equipment and clothing is protected against theft by
electronic security systems.
These systems typically operate with resonance frequen-
cies in the kHz range (e.g. a pulse is emitted which
causes an amorphous metal in the security tag to reso-
nate; one of the largest suppliers uses a security system
that operates at 58 kHz).
In unfavorable conditions, these systems may suffer from
interference if the operating frequency is between 30 kHz
and 150 kHz. Such interference can be eliminated by
increasing the distance between the luminaire and the
transmitting/receiving system and by using luminaires
with metallic louvers.