Operating Instructions – Explosion-Proof AC Motors – DRS/DRE/DRP 315
23
5
Motors in category 3GD
Electrical Installation
5.6.9
Connecting the motor
Checking cross
sections
Check the cable cross sections based on the rated motor current, the valid installation
regulations and the requirements where the unit is installed.
Checking the wind-
ing connections
Check the winding connections in the terminal box and tighten them if necessary.
Motor connection
terminal board
The motors are supplied and connected differently depending on the electrical design.
Arrange the cables and terminal links as shown in the wiring diagram and screw them
on firmly. Observe the tightening torques specified in the following tables.
The versions in bold print apply to S1 operation for the standard voltages and standard
frequencies according to the data in the catalog. Other versions may have different con-
nections, for example different terminal stud diameters and/or a different scope of deliv-
ery.
NOTE
It is essential to comply with the valid wiring diagram! Do not connect or start up the
motor if this wiring diagram is missing.
For the wiring diagrams refer to section "Wiring diagrams" (see page 35) or request
them from SEW-EURODRIVE stating the order number of the motor (see section "Unit
designation, nameplate"):
Motor size DR.315
Terminal stud
diameter
Tightening torque of
hex nut
Customer
connection
Connection type
Scope of deliv-
ery
Cross section
M12
15.5 Nm
≤
50 mm
2
Ring cable lug
Connection parts
pre-assembled
M16
30 Nm
≤
95 mm
2
