SIEMENS
2/92
Siemens D 83.1 · 2016
2
Motors with Explosion Protection
LOHER CHEMSTAR and VARIO 1PS1 motor series
General information
■
Technical specifications
(continued)
Terminal boxes
The installed terminal boxes are also marked and certified as "Non-
sparking". Ex nA terminal boxes of the CHEMSTAR and VARIO
series are identical in construction to the Ex e "Increased safety"
connection system. In accordance with the current, harmonized
edition EN 60079-0, the gas for the Ex type of protection test must
be specified in the case of type of protection "Non-sparking". The
CHEMSTAR and VARIO series are generally certified for the
highest class as per "IIC". They are marked in accordance with the
EC directive (2014/34/EU) with II 3G Ex nA IIC T3 Gc. Compliance
with the regulations is documented here with an EC Declaration of
Conformity.
The terminal boxes comply with the "Increased safety" Ex e IIC
type of protection. 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. Terminal boxes can be rotated
by 90° which allows the incoming supply cable to be fed in from
different sides.
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. 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.
Figure 1
Terminal box for LOHER CHEMSTAR frame sizes 90 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 motors of type series 1PS1 CHEMSTAR and VARIO,
the terminal pins are fitted with round terminals in accordance
with DIN 46223.
G_D083_XX_00095
No auxiliary terminal boxes Ex e (
W72, M52
) are possible.
G_D083_XX_00096
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_00097
3 auxiliary terminal boxes Ex e (
W72, M52
) are possible.
G_D083_XX_00098
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