Electrical connection
6.5 Conductor connection
Smoke extraction motors
54
Operating Instructions, 03/2016, 5 610 80000 40 018
●
Use the terminals designated for the grounding conductor in the terminal box.
●
Comply with the tightening torque (Page 52) for the terminal screw.
For machines, frame sizes 80 ... 90 with central terminal box locking, a cable lug, size M4
according to DIN 46237 can be used to connect the inner grounding.
External ground terminal
When making connections, ensure the following:
●
Ensure that the connecting surface is bare and is protected against corrosion using a
suitable substance, e.g. acid-free Vaseline.
●
Position the cable lug between the contact bracket and the grounding bracket; do not
remove the contact bracket pressed into the enclosure!
●
Arrange the flat washer and spring washer under the bolt head.
●
Use the terminals designated for the grounding conductor in the terminal box.
●
Comply with the tightening torque (Page 52) for the terminal screw.
6.4.5
Size of grounding conductor screw
Table 6- 5
Size of grounding conductor screw
Frame size
Thread size for the grounding conductor
80 ... 90
M3.5 / M4
100 ... 112
M5
132 ... 180
M6
200 ... 315
M8
6.5
Conductor connection
6.5.1
General information on conductor connection
Cross-sections that can be connected depending on the size of the terminal (possibly
reduced due to size of cable entries)
