Table of Contents
B 1091 en-2722
41
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3.3.4 Cable glands
Cable glands must be approved for explosion hazard areas of Zone 21 (protection class: at least IP66)
and be secured against self-loosening. Unused openings must be sealed with approved plugs
(protection class: at least IP66).
For Zone 22, cable glands according to EN 60079-0 and IEC 60079-0 must comply with at least one
protection class that is indicated on the name plate. Unused openings must be sealed with blind plugs
that comply with at least the motor protection class as well as with the requirements according to
EN 60079-0 and IEC 60079-0. The cable and blind plugs must be suitable for temperatures of at least
80°C.
In order to connect cables or carry out other works, the motor must not be opened in explosive
atmospheres. The voltage must always be switched off and secured against switch-on before opening.
The motors are equipped with threads for cable glands according to the following overview.
Assignment of cable gland to motor size
Standard motor cable glands
Braking motor cable glands
Type
Quantity Threads Quantity Threads Quantity Threads
Quantity Threads Quantity Threads Quantity Threads
63
2
M20x1.5
4
M20x1.5
2
M12x1.5
71
2
M20x1.5
4
M20x1.5
2
M12x1.5
80
2
M25x1.5
4
M25x1.5
2
M12x1.5
90
2
M25x1.5
4
M25x1.5
2
M12x1.5
100
2
M32x1.5
4
M32x1.5
2
M12x1.5
112
2
M32x1.5
4
M32x1.5
2
M12x1.5
132
2
M32x1.5
4
M32x1.5
2
M12x1.5
2
M16x1.5
160/
180/..X
2
M40x1.5
2
M12x1.5
2
M16x1.5
2
M40x1.5
2
M12x1.5
2
M16x1.5
180/
200/..X
2
M40x1.5
2
M12x1.5
2
M16x1.5
2
M40x1.5
2
M12x1.5
2
M16x1.5
225
2
M50x1.5
2
M12x1.5
2
M16x1.5
2
M50x1.5
2
M12x1.5
2
M16x1.5
250 WP
2
M63x1.5
2
M12x1.5
2
M16x1.5
2
M63x1.5
2
M12x1.5
2
M16x1.5
If the motor is supplied with a certified cable
gland, the cable gland's lock nuts must be
tightened with a torque according to the
following table.
C
abl
e e
nt
ry
Tightening torques for lock nut
Cable gland
M20x1.5 M25x1.5 M32x1.5 M40x1.5 M50x1.5 M63x1.5
Tightening torque (Nm)
3.0
6.0
12.0
14.0
20.0
25.0
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