www.nord.com B1091-GB-3212 -15-
7. IE2-ATEX Motors for use in
Zone 21 and Zone 22
7.3.2 Cable and wiring glands
In Zone 21, the cable entries must be authorised for Ex areas (protection class minimum IP 66) and must be
secured against accidental loosening. Unused apertures must be sealed with authorised plugs (minimum
protection class IP 66). As delivered, the motors are equipped with a blank screw cap and a plastic cap. The
plastic cap must be replaced with a certified cable gland.
For Zone 22, the cable glands must as a minimum correspond to the protection type specified on the name
plate. Unused openings must be closed with plugs, which as a minimum correspond to the protection class
of the motor and the requirements of EN 60079-0. The cable glands and blank plugs must be suitable for a
temperature of at least 100°C.
The motor must not be opened under hazardous atmospheres to connect the electrical cables or for any
other work. The voltage must always be switched off and secured against being switched on again before
opening the motor!
The motors are equipped with cable glands according to the following overview.
Assignment of Cable Glands to Motor Size
Cable glands for standard motors Cable glands for brake motors
Type Number Thread Number Thread Number Thread Type Number Thread Number Thread Number Thread
63 2 M20x1.5 63 4 M20x1.5 2 M12x1.5
71 2 M20x1.5 71 4 M20x1.5 2 M12x1.5
80 2 M25x1.5 80 4 M25x1.5 2 M12x1.5
90 2 M25x1.5 90 4 M25x1.5 2 M12x1.5
100 2 M32x1.5 100 4 M32x1.5 2 M12x1.5
112 2 M32x1.5 112 4 M32x1.5 2 M12x1.5
132 2 M32x1.5 132 4 M32x1.5 2 M12x1.5 2 M16x1.5
160/
180/..X 2 M40x1.5 2 M12x1.5 2 M16x1.5
160/
180/..X 2 M40x1.5 2 M12x1.5 2 M16x1.5
180/
200/..X 2 M40x1.5 2 M12x1.5 2 M16x1.5
180/
200/..X 2 M40x1.5 2 M12x1.5 2 M16x1.5
200 2 M40x1.5 2 M12x1.5 2 M16x1.5 200 2 M40x1.5 2 M12x1.5 2 M16x1.5
If the motor is supplied with a certified cable gland, the clamping nuts of the cable gland must be tightened to
the torque specified in the following table.
Cable gland Clamping nut tightening
torque [Nm]
M20x1.5 6
M25x1.5 8
M32x1.5 12
M40x1.5 16
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