Completing Connection Work; Internal Equipotential Bonding - Siemens SIMOTICS M-1PH8 Operating Instructions & Installation Instructions

Electrical connection
6.3 Connecting
6.3.7

Completing connection work

1. Before closing the terminal box, please check that:
2. Then close the terminal box with the terminal box cover fixing screws.
6.3.8

Internal equipotential bonding

The internal equipotential bonding between the grounding terminal in the box enclosure and
the motor frame is established through the terminal box retaining bolts. The contact locations
underneath the bolt heads are bare metal and protected against corrosion.
The standard cover fixing screws are sufficient for equipotential bonding between the terminal
box cover and terminal box housing.
Note
Connecting points are provided on the enclosure or end shield to allow an outer PE conductor
or equipotential bonding conductor to be connected; see "Connecting the grounding
conductor".
See also
Connecting the grounding conductor (Page 58)
64
– the electrical connections in the terminal box are tight and are in full compliance with
the specifications above.
– The required clearances in air of 10 mm are maintained.
– Wire ends do not protrude.
– the inside of the terminal box is clean and free of any cable debris.
– all seals and sealing surfaces are undamaged.
– The connecting cables are arranged so that they do not come into contact with the
machine, and the cable insulation cannot be damaged.
– Unused threads are closed with metal screw plugs certified for use in Zone 22 or bonded
in position so they cannot be removed. The sealing elements can only be removed with
a tool.
– The cable/conductor glands are fitted compliant with the specifications regarding degree
of protection, cable routing type, permissible cable diameter etc.
Operating Instructions 05/2012 A5E03986435A AA
SIMOTICS M-1PH8