User Guide

2.2 BA390XS panel lamps
This range of panel lamps are optimised for operation at
low currents, if powered from a voltage source they require
an external current regulator such as a series resistor or
electronic current regulator. They are intended for low
current applications or where it is required to vary the lamp
brightness. They have IECEx and ATEX gas and dust
intrinsic safety certication and FM gas intrinsic safety and
nonincendive certication.
Fig 2 shows the equivalent circuit of a BA390XS panel
lamp. The lamp brilliance is proportional to the input
current as shown in Table 2.
1 to 22mA
Maximum
voltage drop
8.7V max
+
Fig 2 Equivalent circuit of BA390XS
Current
mA
BA390XS colour
Red Green Amber Blue White
1 15 14 12 22 14
2 20 25 22 44 28
3 43 36 34 66 43
4 58 46 46 87 58
5 72 55 56 108 72
6 86 65 68 128 84
8 114 81 91 168 108
10 142 95 112 206 132
15 213 126 168 294 192
Table 2 BA390XS illuminance in lux 15cm from the
lamp.
2.3 BA590X panel lamps
Intended for use in non hazardous areas these uncertied
lamps incorporate a 20mA constant current regulator and
therefore consume a xed current and have constant
brilliance irrespective of supply voltage variations. When
the supply voltage to the lamp exceeds the minimum
operating voltage the lamp will draw a constant current
between 18 and 22mA and the lamp brilliance will be
constant. Below the minimum supply voltage the lamp will
have a reduced brilliance and below a voltage which varies
with the lamps colour, the lamp will not be illuminated.
3. Intrinsic Safety Certication
The BA390X and BA390XS panel lamps have international
intrinsic safety certications allowing them to be installed
in gas and dust hazardous areas worldwide. Dust
certication is an option which should be specied when
the lamp is ordered.
Both types of lamp have IECEx Certicates of Conformity
issued by Certication Body Intertek Testing and
Certication Ltd. IECEx certicates, which are based
on international IEC standards, are accepted directly or
indirectly in large parts of the world.
Notied Body Intertek Testing and Certication Ltd have
also issued both types of panel lamp with an EU-Type
Examination Certicate conrming compliance with
BS EN harmonised standards which has been used to
conrm compliance with the European ATEX Directive
2014/34/EU. The lamps carry the Community Mark and,
subject to local codes of practice, may be installed in any
of the European Economic Area (EEA) member countries.
ATEX certicates are also accepted for installations in
many other countries - see Blue Book for details.
BS
EN standards are identical to international IEC
standards, therefore the ATEX and IECEx certicates for
these panel lamps use the same terminology and have the
same safety parameters.
For use in the USA both types of lamp have FM intrinsic
safety and nonincendive approval for use in gas
atmospheres.
3.1 IECEx and ATEX certication
3.1.1 Gas atmospheres
The BA390X and BA390XS panel lamps have been
certied:
Group II Category 1G
Ex ia IIC T4 Ga
–20°C Ta 60°C
When connected to a suitable system the lamps may be
installed in:
Zone 0 explosive gas air mixture continuously
present.
Zone 1 explosive gas air mixture likely to occur in
normal operation.
Zone 2 explosive gas air mixture not likely to
occur, and if it does will only exist for a
short time.
2