● In the case of aluminum connecting bars, insert a steel washer between the cable lug and
the connecting bar. This prevents contact corrosion.
● Correctly close and seal threads or holes that are not being used ensuring that the IP degree
of protection is maintained. The IP degree of protection is specified on the rating plate.
Replace the cable glands that are not being used by appropriately certified screw plugs.
6.5.5
Connecting cables with cable lugs
1. Select the cable lugs according to the required cable cross-section and fixing screw or stud
size. Information about the maximum cross-section for the respective standard terminal
box design can be found in the catalog.
A sloped/angular arrangement of the supply cables is only permitted provided the required
minimum air clearances are met.
2. Remove the insulation from the conductor ends so that the remaining insulation reaches
almost up to the cable lug
①
. Connect only one conductor per cable lug.
3. Fasten the cable lug to the end of the conductor correctly, e.g. by squeezing.
Figure 6-9
Connection with cable lug and fixing screw (schematic diagram)
4. Insulate the cable lug sleeves where necessary to ensure minimum air clearances and the
creepage distance are maintained.
5. Place the cable lug on the terminal support. If you are using a disconnecting link, check its
positioning.
For terminal boxes 1XB7740 and 1XB7750, place the cable lug on the busbar.
6. Tighten the fixing element
②
with the corresponding tightening torque:
Fixing element
Tightening torque
Fastening screw M12
20 Nm
Fixing screws M16
40 Nm
Fixing nuts M12
20 Nm
Note
You can find more information in Chapter 2 of catalog D81.8.
Electrical connection
6.5 Inserting and routing the cables
SIMOTICS FD 1MH1
Operating Instructions 08/2017
95
Содержание SIMOTICS FD 1LL1
Страница 2: ...18 08 2017 17 24 V10 00 ...
Страница 32: ...Description 3 1 Comparison of IEC and GOST standards SIMOTICS FD 1MH1 32 Operating Instructions 08 2017 ...
Страница 58: ...Preparations for use 4 19 Converter operation SIMOTICS FD 1MH1 58 Operating Instructions 08 2017 ...
Страница 104: ...Electrical connection 6 6 Connecting the auxiliary circuits SIMOTICS FD 1MH1 104 Operating Instructions 08 2017 ...
Страница 120: ...Start up 7 10 Setting the motor parameters at the converter SIMOTICS FD 1MH1 120 Operating Instructions 08 2017 ...
Страница 176: ...Disposal 11 4 Disposal of components SIMOTICS FD 1MH1 176 Operating Instructions 08 2017 ...
Страница 178: ...Service and Support SIMOTICS FD 1MH1 178 Operating Instructions 08 2017 ...
Страница 182: ...Quality documents SIMOTICS FD 1MH1 182 Operating Instructions 08 2017 ...
Страница 187: ......