October 2019
Installation, Operation and Maintenance Manual
MAN-02-04-97-0713-EN Rev. 1
120
Appendix
Appendix
A.7.3
Electrical Connections
External wires or connections of external ATEX-certified apparatus via the conduit entry of
an additional extension must be wired to the internal cards of the XTE3000, in accordance
with the wiring diagram and general instructions on the actuator label.
A.7.3.1
Connection for Ex-e Terminals Enclosure
The wires must be terminated in accordance with the following method:
Type of terminal:
Insulated ring tongue
Eye dimensions:
5.5 mm (0.22 in) for power cable
3.2 mm (0.13 in) for control cables
Recommended tightening torques:
2.0 - 2.8 Nm (17.7 - 24.8 lb.in) for power cables
1.0 - 1.5 Nm (8.9 - 13.3 lb.in) for control cables
Wires section:
4 mm² (0.006 in²) for power cables
2.5 mm² (0.004 in²) for control cables
A.7.4
Cable Connection
Sealing of conduit entries must be carried out in accordance with national standards or as
indicated by the relevant regulatory authorities.
Sealing methods and cable glands must be approved and separately certified for use in
hazardous areas.
Two earth connection points - one internal and one external - are located on the XTE3000
base model (see Figure A-3) for connection to ground cables.
NOTICE
To prevent water infiltration through the line cable conduits, be sure the cable glands used
possess the minimum degree of protection required by the plant and are specified on the
actuator label. If a rigid conduit makes a connection to the plant, it is recommended to
place a flexible pipe connection between the conduit and the conduit entry of the
additional extension.
To guarantee that weather-proof and explosion-proof characteristics are maintained,
screw the cable gland or the external ATEX-certified apparatus tightly (at least 5 turns of
engagement) and coat them with a thread sealant.
