Ex p relay
Power
Product description
20190910_Manual_Exp-Relais_Power_en.docx
Rev. 0
Page 13 of 24
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Product description
General information
The Ex p power relay is intended for the safe separation of supply lines directly in
hazardous areas and can be used together with the BARTEC pressurised
enclosure systems APEX or SILAS.
The Ex p power relay has four electrically isolated switch contacts which open
the contacts when the power falls away. The safe opening of the contacts is
guaranteed by two series-connected relays. Up to three phases of supply lines
can be switched off using the switching power of 400V, 16 A and 4kW.
The Ex p power relay is available in three different activation voltages and as a
module for integration in a separately certified enclosure or as a complete
control unit.
Ex p power relay
Module
The Ex p power relay (module) must be installed in an enclosure with the
minimum dimensions of 220 mm x 120 mm x 90 mm.
The enclosure must be certified according to a recognised ignition protection
class in accordance with section 1 of IEC/EN 60079-0.
In the case of installation in an enclosure with enhanced safety “e“ IEC/EN
60079-7, the clearances and creepage distances and ambient temperatures
must be observed.
If used in atmospheres with high air humidity, a separately approved
enclosure with breathing device must be used.
Complete control unit
The Ex p power relay (complete control unit) is installed in an enclosure in
accordance with IEC/EN 60079-7 with the dimensions 220 mm x 120 mm x 90
mm.
It can be simply mounted to the Ex p protected equipment using the
installation aids on the enclosure.
