Doc.-ID: 220518-PT20BAU-SS-Ex Installation Manual rev.01.docx, Page 4 of 24
1
Introduction
The liteServer
®
Series (type 20) is an electrical device. It is certified and approved as a
flameproof lumination system. The luminaires may be used in Ex-zones 1, 2, 21 and 22,
including the explosion group IIC (for example, acetylene) and IIIC (conductive and com-
bustible dust). Some models are even approved for the mining industry.
Some models of the T20-
VA… liteServer® Series can be used, both as stationary and as
mobile explosion-proof lighting fixtures (hand-held use, etc.).
2
Technical data
2.1
Characteristic values for explosion protection
Identification marks
acc. to Directive 2014/34/EU:
II 2G (zone 1 and 2)
II 2D (zone 21 and 22)
I M2
1
Explosion protection (gas):
Ex db IIC T6 Gb
1
Explosion protection (dust):
Ex tb IIIC T80°C Db IP68
1
Explosion protection (mining):
Ex db I Mb
1
Protection degree:
IP66/67/68/69K (IEC/EN 60529)
2.1.1
Optional marking
If necessary, the mining industry marking (ATEX Group 1) can be omitted. **
The explosion group can be downgraded, if necessary. **
The ambient temperature range can be downgraded, if necessary. **
The temperature class/value (gas or dust) can be downgraded, if necessary. **
op is
= for models with inherent safe opt. radiation [op is Gx/Dx] **
op pr
= for models with protected optical radiation [op pr Gx/Dx]. **
** Please observe the markings on the type plate, the model key, as well as the operating
instructions for the device. In addition, the following warnings are stated on the
identification plate:
1
See optional/additional marking
