KROHNE CAPAFLUX EEx-ATEX EN - Manual (Page 7)

CAPAFLUX IFM 5080 K/CAP-EEx and CAPAFLUX IFM 5080 K/CAP i-EEx 7
2 Electrical connection
2.1 Equipotential bonding system
All EEx and EEx/i flowmeters must always be incorporated into the equipotential bonding system of the
hazardous area. This connection can be achieved through the PE/FE conductor connected to the PE
terminal in the terminal compartment (see figure of terminal arrangement below) or through a separate
PE conductor, cross sectional area at least 4 mm
2 , connected to the external PE clamp, placed below
the converter housing.
2.2 Connecting cables
Note
The below described cables are shown in the following connection diagram.
Cable A:
Signal cable for current output and binary outputs (pulse and status output): The cable parameters must
be in accordance with the regulations in the EN 60079-14 "Electrical installations in hazardous
locations" or an equivalent national standard. For the MODIS version with IFC 090 / CAP i-EEx
electronics unit (right detail in connection diagram) the signal cable for the intrinsically safe signal in-
/outputs must also conform the requirements as specified in the relevant standard national code of
practice for the installation of electrical apparatus with type of protection Intrinsic Safety "i".
Cable B:
Power supply cable: The cable parameters must be in accordance with the regulations of the
EN 60079-14 "Electrical installations in hazardous locations" or an equivalent national standard.
Rated voltage:
≥ 500 V
Examples: H07...-., H05...-.
Equipotential bonding conductor
Cross-sectional area:
4 mm
2 (equivalent to AWG 10)