SIEMENS
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Siemens D 83.1 · 2016
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Introduction
LOHER motors
Customized and industry-specific drive solutions in the process industry
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Application
(continued)
Integrated pump drives
In the chemical industry, special motors are used that are
integrated into pumps. They operate reliably even under
extreme conditions of temperature and pressure. In this industry,
temperatures can range from -50 to +400 °C and system
pressures can be as high as 1200 bar.
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Design
The motors described in this catalog are surface-cooled, low-
voltage motors designed for the highest demands on availability
and reliability. The motors are extremely rugged and reliable and
are available as standard versions without explosion protection,
as well as in the Ex nA, Ex d(e), Ex p and Ex e types of protection.
For extreme requirements, motors are available with double
protection against gas and dust.
The highly efficient motors cover the power range of 0.25 to
1400 kW in 2- to 16-pole versions (higher power ratings are
possible on request) and, in compliance with IEC 60034-30-1,
they achieve efficiency class IE2 in the power range 0.75 to
375 kW in 2-, 4- and 6-pole versions, and they are available
for 50 Hz and 60 Hz.
The LOHER CHEMSTAR and SIMOTICS XP motor series are self-
ventilated, surface-cooled finned motors for line and converter
operation.
The LOHER VARIO series, which is also surface-cooled, is
characterized by its special internal air circulation / hollow
fin technology for an extremely high power density with a very
high degree of efficiency.
© Siemens AG 2016