BS EN 50348:2010 pdf download

BS EN 50348:2010 pdf download.Stationary electrostatic application equipment for non-ignitable liquid coating material – Safety requirements.
3.13
antistatic floor
floor that has a resistance to earth wtiich is low enough to prevent the build-up of electrostatic charges capable to produce a hazardous discharge
3.14
accessories
assemblies and other equipment, except of the spraying system and the high voltage supply system
3,15
constant-voltage operation
closed control circuit system with direct feedback of the actual value of the output high voltage. During the constant-voltage operation, the adjusted output high voltage is maintained constant up to the Capaaty of the high voltage part via a control device, independent of the variable operational current
NOTE In this idwd, the symbol Ics this mode of ofieratirn
3.16
voltage-controlled operation
open control circuit system without feedback of the output high voltage. During the voltage-controlled operation the output high voltage is adjusted generally at a defined operational curreni The output high voltage, however, Is riot maintained constant by a control device, It vanes depending on the operational current and the on-load behavior of the high voltage device
NOTE In this stderd, the symbol Ics tt mode of ogerabon is U.
3.17
constant-current operation
closed control circuit system wIth direct feedback of the actual value of the h.gh voltage current to a control device. In doing so, the operational current is maintained constant and the output high voltage varies load-dependently between a minimum and a maximum value defined by the process
NOTE In this stidd, the symbol tot this mode of opecabon 1’k•
318
operational current
current that flows within the high voltage circuit during failure-free operation
NOTE In this stwdd, the symbol tot the oçwiabonal cisrll
3.19
overcurrent
current occurring during a malfunction, exceeding the operational current of the high voltage circuit and giving rise to expect that In voltage-controlled and constant-voltage operation hazardous discharges or arcs between high voltage parts and grounded parts of the plant can occur In case the safety distance drops below the permissible limit
NOTE In this slaidird, the symbol lot overcurrent i the h4Ø voltage circuit SLd.
3.20
minimum voltag.
value of the voltage of the high voltage circuit giving rise to expect that in constant-current operation hazardous discharges or tiashover by arcs can occur between high voltage parts and grounded parts of the plant in case the safety distance drops below the permissible limit
NOTE In this stecderd, the symbol lot muUmum voltage In high voitage circuit is U.
4.4 Stationary equipment shall be designed and constructed to satisfy the Intended function as given by the limitations of the manufacturer safety even in case of varying environmental conditions. influence of external voltages, exposure to humidity, vibrations, contaminations as well as other environmental influences. Stationary equipment shall be suitable for the intended mecttanical and thermal demands and shall withstand the effects of present or predictable aggressive materials.
4.5 The spi-aying system, with exception of the spraying device, shall have at least IP-protection
1P54 protection according to lEG 60529.
4.6 Safety devices shall function independently of the measuring, control and regulation devices required for operation, The failure of a safety device shaM be detected, if possible, by appropriate technical measures within an adequate period, so that hazardous conditions are not likely to occur,
Fundamentally, the fail-safe principle shaM be applied.
In case of failure of safely devices, the stationary equipment shall be led to a safe condition as far as possible.
4.7 The entire control system consisting of e.g. electrical control. monltonng and measurement
systems, which are used In safety related functions, shall comply with the safely Integrity level 2
according to EN 62061:2005 or fulfil the requirements of performance level (P1) d of EN ISO 13849- 12008.
If safety functions of the control system according to Clause 5 and Table 2 depend on software, particular attention shall be paid to risks due to programme errors, see EN 61508-3 and EN 62061:2005. 6.10, 6.11 and Mnex C.
4.8 The equipment shall comply with the safely requirements and/or protective measures of this clause. In addition, the equipment shall be designed according to the principles of EN ISO 12100 for relevant, but not significant hazards, which are not dealt with by this standard.