Nord Drivesystems B1091 User Manual

-14- B1091-GB-3212 www.nord.com
7. IE2-ATEX Motors for use in
Zone 21 and Zone 22
The terminal box seal is glued into the cover of the terminal box cover. Please only use an original seal when
replacing the seal.
If the terminal box is opened during installation, maintenance, repair, troubleshooting or overhaul, the
terminal box cover must be re-fitted after the work is complete. There must be no dirt on the surface of the
seal or the sealing surface of the terminal box frame.
The screws for the terminal box cover must be tightened with a torque according to the following table.
Tightening torques for terminal box cover screws
Thread Tightening torque [Nm]
M4
0.8 to 1.2
M5
1.2 to 1.8
M6
1.5 to 2.5
M8
3.0 to 5.0
7.3.1 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.
Torques for Electrical
Rated thread diameter Tightening torque [Nm]
M1.6 0.09-0.12
M3 0.35-0.5
M4 0.8-1.2
M5 1.8-2.5
M6 2.7-4.0
M8 5.5-8.0
M10 9.0-13.0
M12 16.0-20.0
M16 36.0-40.0
Electrical connection:
Brass nut
Lock washer
Brass washer
Brass washer
Brass nut
Brass washer
Ring terminal
Brass washer
Brass thread with collar
Mechanical protection against twisting
A
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Nord Drivesystems B1091 Specifications

General

Brand	Nord Drivesystems
Model	B1091
Category	Engine
Language	English