Nord Drivesystems B1091, Operating Manual With Installation Instructions

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Motors – Manual with installation instructions
24 B 1091 en-1221
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3.1.2 Cable connections
All motors with ignition protection class Ex eb are delivered with a certified cable gland.
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If the provided cable gland is used, cables with circular cable cross-section must be used. The cable
gland's lock nuts must be tightened with a torque according to the following table.
Tightening torques for lock nut
Cable gland M20x1.5 M25x1.5 M32x1.5 M40x1.5
Tightening torque (Nm) 3.0 6.0 12.0 14.0
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Use of reduction adapters according to Directive 2014/34/EU and/or cable glands with ignition
protection class Ex eb is permissible. For this, a minimum certified temperature of 80°C is necessary.
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When connecting, care must be taken that the permissible air gaps of at least 10 mm and the
permissible leakage tracks of at least12 mm between the electrically live components and components
with the same potential as the housing, or between live components are maintained.
Check that the terminal nuts and the screw for the earth lead are tight before closing the terminal box.
The terminal box seals and the seals of the cable glands must be correctly seated and must not be
damaged.