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Gb
=
Explosion Protection Level (EPL) marking for “HIGH” level of protection. Equipment for
explosive
GAS
atmospheres, which is not a source of ignition in normal operation or during
expected malfunctions.
Explanation of marking for explosion hazardous area due to Dusts (e.g Ex t IIIC T 90 °C
Db):
Ex
= Certified for use in explosion-hazardous areas
tb
= Ex
plosion protection method “protection by enclosure”
op is
= Explosion protection method optically inherently safe (visible or infrared radiation that
is incapable of producing sufficient energy under normal or specified fault conditions to ignite
a specific hazardous athmosphetic mixture). This definition is analogues to the term
“intrinsically safe” applied to electrical circuits
IIIC
= Equipment group for conductive dusts (including IIIA, IIIB and IIIC dusts)
T 90
°
C
= Maximum OUTSIDE surface temperature of the unit is 90 °C (within the ambient
temperature range of -20°C - +40°C)
Db
= Explosion Protection Level (EPL) marking for “HIGH” level of protection. Equipment for
explosive
DUST
atmospheres, which is not a source of ignition in normal operation or during
expected malfunctions
1.3 Standard unit construction
The following list familiarizes you with some common unit features important to recognize.
End parts
: Flexible, plastic-made end parts ensure shock-absorbing and harmless contact to
sensitive and hard surface in case the luminary drops to the ground even from high position.
Light construction affects the total weight of the unit itself.
Transparent PC
–tube
: Polycarbonate tube, being durable, flexible and lightweight plastic,
brings advantage for use. Unique antistatic treatment allows the use of PC in explosion
hazardous areas.
Aluminium frame
: Nearly all Slam®Hornet
–units are based on use of solid but flexible
aluminium frame. Components are tightened with screws on it, making the unit tough and
durable in severe conditions. Moreover, the frame derives excessive heat out from the
luminary thereby extending lifetime of the unit.
Electronic control gear
: The control gear in controlling the supply of energy to the light
source of the luminaire.The contol gears are independent from each others. Under failure of
one control gear, the other still continues operating. Low-voltage protection (smart-feature)
brings reliability and convenience for use, especially when operating with transformers or with
long cables.
