nord 6051302, Operating And Assembly Instruction Manual

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Motors – Operating and Assembly Instructions
60 B 1091 en-2722
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3.8.2 Electrical Connection
The electrical connections of the terminal board are protected against twisting. The voltage supply to
the terminal board must be made by means of suitable ring terminals. The ring terminals are installed
between the two brass washers below the lock washer. The nuts must be tightened with a torque
according to the table below. The contact pressure is permanently maintained by means of the specified
torque and the lock washer. In addition, twisting of the ring terminals of the voltage supply is prevented.
The connection elements are corrosion-proof.
Tightening torques for terminal board connections
Thread diameter M4 M5 M6 M8
Tightening torque (Nm) 0,8 - 1,2 1,8 - 2,5 2,7 - 4,0 5,5 - 8,0
Exploded diagram of electrical connection
Brass nut
Lock washer
Brass washer
Brass nut
Ring terminal
Brass thread with collar
Mechanical protection against twisting
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The motor must be grounded at one of the marked earthing terminals.
The use of aluminium connecting cables is not permissible.
Cables with a circular cross-section must be used with the supplied cable glands. The clamping nuts of
the cable gland must be tightened to the torque specified in the following table.
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
When connecting, care must be taken that the permissible air gaps of at least 10 mm and the permissible
leakage tracks of at least 12 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 cable gland seals must be correctly seated and must not be damaged.
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3.8.3 Motor position – special features IM V3, IM V6
If the end of the shaft faces upwards, e.g. version IM V3, IM V6, a cover must be provided by the
operator / installer, which prevents foreign bodies from falling into the fan cover of the motor (see
EN IEC 60079-0:2018). This must not obstruct the fan from cooling the motor. If the end of the shaft
faces downwards (AS, inclination 20° to 90°), e.g. versions IM V1, IM V5, the motors are to be used with
a protective cover on the fan cover. For an inclination of less than 20°, an appropriate protective device,
which meets the above mentioned conditions, must be provided by the operator / installer.
A hand wheel on the second shaft end is not permitted.
Cable lug provided by
customer