User Guide

1. Introduction
This application guide describes the use and installation
of BA390 and BA390S intrinsically safe LED panel lamps.
It also describes the general purpose non-certied 24V
BA590 panel lamp for use in non-hazardous areas.
2. Description
There are three types of panel lamp in this range:
BA390X Certied intrinsically safe lamp that
draws a constant 20mA from an
intrinsically safe voltage source.
BA390XS Certied intrinsically safe low current lamp
which requires an external current regulator.
BA590X General purpose panel lamp for use in
non-hazardous safe areas. Draws a
constant 20mA from a 14 to 30V dc supply.
Each type of panel lamp is available in ve well dened
colours indicated by the model number sufx.
Intrinsically safe Safe area
Colour 20mA
lamp
Low current
lamp
20mA
lamp
Red BA390R BA390RS BA590R
Green BA390G BA390GS BA590G
Amber BA390A BA390AS BA590A
Blue BA390B BA390BS BA590B
White BA390W BA390WS BA590W
2.1 BA390X panel lamps
These panel lamps contain a 20mA constant current
regulator and therefore draw a xed current and have
constant brilliance irrespective of supply voltage variations.
They have IECEx and ATEX gas and dust intrinsic safety
certication and FM gas intrinsic safety and nonincendive
certication.
LED panel lamp
Fig 1 shows the equivalent circuit of a BA390X panel lamp.
When the supply voltage to the lamp exceeds the minimum
operating voltage of 14V the lamp will draw a constant
current between 18 and 22mA and the lamp brilliance will
be constant. Table 1 shows the typical illuminance from
different colour BA390 lamps.
20mA
+
14 to 30V
20mA current
regulator
Fig 1 Equivalent circuit of BA390X
Below the minimum supply voltage the lamp will have a
reduced brilliance and below a voltage which varies with
the lamp’s colour, it will not be illuminated.
Colour Red Green Amber Blue White
Output
lux
163 231 235 530 273
Table 1 Typical BA390X illuminance in lux 15cm from
the lamp.
APPLICATION GUIDE AG390
Intrinsically safe LED Panel Lamps
associates