SIEMENS
2/40
Siemens D 83.1 · 2016
2
Motors with Explosion Protection
LOHER CHEMSTAR and VARIO 1PS4 and 1PS5 motor series
General information
■
Technical specifications
(continued)
Terminal boxes
The terminal boxes comply with the type of protection "Increased
safety" Ex e in accordance with EN 60079-0 and EN 60079-7.
The enclosures are made of cast iron and designed to IP55
degree of protection in accordance with EN 60034-5. The
terminals are therefore protected from touch, dust deposits and
water jets from any direction.
The position of the terminal box and cable entries can be
obtained from the tables below. In frame size 90 and above, the
terminal boxes can be rotated by 90° which allows the incoming
supply cable to be fed in from different sides. In frame sizes 71
and 80, the terminal box can only be rotated subsequently in an
authorized specialist workshop (due to opening the explosion-
proof enclosure).
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 in type of protection Ex e IIC mounted on the side
of the terminal box. The design of the terminal boxes can be
seen in the schematic diagrams. The number and size of the
main and auxiliary terminals as well as their characteristic data
can be obtained from the tables below. Terminal boxes in type
of protection "Explosion-proof enclosure" Ex d IIC according to
EN 60079-0 and EN 60079-1 can be supplied on request.
Separate terminal boxes for main connections and accessories
are available in type of protection "Explosion-proof enclosure" for
auxiliary terminals for frame sizes 200 to 500 only.
Figure 1
Terminal box for LOHER CHEMSTAR frame sizes 71 to 112
Figure 2
Terminal box for LOHER CHEMSTAR frame sizes 132 to 225
Figure 3
Terminal box for LOHER CHEMSTAR frame sizes 250 to 280
Figure 4
Terminal box for LOHER CHEMSTAR frame sizes 315 to 355
Figure 5
Terminal box for LOHER VARIO frame sizes 355 to 500
For versions with terminal box Ex d, no auxiliary terminal
boxes are possible for frame sizes 71 to 112 and 1 auxiliary
terminal box Ex d (
V43
) is possible for frame sizes 132 to
355.
G_D083_XX_00087a
Auxiliary terminal box is not possible.
G_D083_XX_00088a
Frame sizes 132 to 160, 1 auxiliary terminal box Ex e (
W72, M52
) is
possible, frame sizes 180 to 225, 2 auxiliary terminal boxes Ex e
(
W72, M52
) are possible.
G_D083_XX_00089a
3 auxiliary terminal boxes Ex e (
W72, M52
) are possible.
G_D083_XX_00090
3 auxiliary terminal boxes Ex e (
W72, M52
) are possible.
G_D083_XX_00072a
25
With the VARIO connection system, the auxiliary terminal boxes
(max. 3) are mounted on the enclosure.
© Siemens AG 2016