SIEMENS
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Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Motor connection and terminal box
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Overview
The terminal box enclosures are made of cast-iron and
designed to IP55 degree of protection (to IP56 in the case of
LOHER VARIO) in accordance with EN 60034-5. The terminals
are therefore protected from touch, dust deposits and water jets
from any direction. The terminal boxes for explosion-proof
motors correspond to the respective standards.
Explosion-proof motors are equipped as standard with
terminal boxes in type of protection "Ex e" in accordance with
EN 60079-0 and EN 60079-7. For motors in type of protection
"Non-sparking", the terminal boxes are stamped with "Ex nA" in
accordance with EN 60079-15. The "Ex nA" terminal box design
is identical to that for “Ex e.”
The position of the terminal box and cable entries can be
obtained from the table below. The terminal boxes can be
rotated by 90° which allows the incoming supply cable to be
fed in from different sides. For motors in type of protection
"explosion-proof enclosure," subsequent rotation of the terminal
box for frame sizes 71 and 80 is only permitted to be performed
in an authorized specialist workshop.
Monitoring devices or anti-condensation heaters are connected
via auxiliary terminals in the terminal box. In frame size 132 and
above, the auxiliary terminals can be installed in an auxiliary
terminal box that is mounted on the side of the terminal box
corresponding to the type of protection of the motor.
Position of the terminal box
Assignment of terminal box position and cable entry to type of
construction
Types of construction
Terminal box position
IM B3/IM B5, IM B3/IM B14 –
terminal box on top
IM B3/IM B5, IM B3/IM B14 –
terminal box on side
IM B6
1)
IM B7
1)
IM B8
1)
IM V1, IM V18
IM V3, IM V19
IM V5
1)
IM V6
1)
IM V15, IM V17
1)
1)
For terminal box position on top, the design is as for IM B3/IM B5,
IM B3/IM B14 – terminal box on top.
© Siemens AG 2016