SARA-G3 series - System Integration Manual
UBX-13000995 - R06
Objective Specification
Design-in
Page 162 of 218
application, as for example the IEC 60079-0 [27], IEC 60079-11 [28], IEC 60079-26 [29]
standards.
The certification of the application device that integrates a SARA-G350 ATEX module and the
compliance of the application device with all the applicable certification schemes, directives and
standards required for use in potentially explosive atmospheres are the sole responsibility of the
application device manufacturer.
The application device integrating a SARA-G350 ATEX module for use in potentially explosive atmospheres
must be designed so that any circuit/part of the apparatus shall not invalidate the specific characteristics
of the type of protection of the SARA-G350 ATEX module electrical equipment.
The intrinsic safety ‘i’ type of protection of SARA-G350 ATEX modules is based on the restriction of
electrical energy within equipment and of interconnecting wiring exposed to the explosive atmosphere to a
level below that which can cause ignition by either sparking or heating effects.
The following input and equivalent parameters must be considered integrating a SARA-G350 ATEX module
in an application device intended for use in potentially explosive atmospheres:
Total internal capacitance, Ci = 103 µF
Total internal inductance, Li = 4.1 µH
The module does not contain blocks which increase the voltage (e.g. like step-up, duplicators,
boosters, etc.)
The nameplate of SARA-G350 ATEX modules is described in the ‘Product labeling’ section of the
SARA-
G3 series Data Sheet [1]. Additional information can be found on the SARA-G350 ATEX modules’
certificate of compliancy for use in potentially explosive atmospheres available on our website (www.u-
blox.com).
The final enclosure of the application device integrating SARA-G350 ATEX modules, intended for
use in potentially explosive atmospheres, must guarantee a minimum degree of ingress protection of
IP20.
2.13.2
Guidelines for VCC supply circuit design
The power supply ratings, average and pulse, must be considered in the design of the
VCC
supply circuit
on the application device integrating SARA-G350 ATEX module, implementing proper circuits providing
adequate maximum voltage and current to the
VCC
supply input of SARA-G350 ATEX modules, according
to the specific potentially explosive gas atmosphere category subdivision where the apparatus is intended for
use.
The following maximum input and equivalent parameters must be considered in gas sub-division IIC:
Ui = 3.8 V
Ii = 1.6 A (burst)
Pi = 2.5 W
Ci = 103 µF
Li = 4.1 µH
