SIEMENS
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Siemens D 83.1 · 2016
2
Motors with Explosion Protection
LOHER CHEMSTAR and VARIO 1PS4 and 1PS5 motor series
General information
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Technical specifications
LOHER CHEMSTAR and VARIO 1PS4 and 1PS5 motor series,
type of protection "Explosion-proof enclosure"
LOHER CHEMSTAR and VARIO motors of the 1PS4 and 1PS5
series are surface-cooled motors in type of protection "Explo-
sion-proof enclosure" Ex d. The CHEMSTAR motors can be
designed in accordance with the current VIK recommendation
("Verband der Industriellen Energie- und Kraftwirtschaft e. V.",
the Association of the Industrial Energy and Power Industry).
The motors are marked in accordance with EN 60079-0 Ed.2009
and EN 60079-1 with II 2G Ex de IIB T3-6 Gb or
II 2G Ex de IIC T3-6 Gb for operation in Zone 1.
General technical specifications
LOHER CHEMSTAR and VARIO 1PS4 and 1PS5 motors
Motor type
D..L/D..W
Frame size
71 … 500
Powers
0.25 … 1120 kW
Temperature class
T1 … T6
Type of protection
II 2G Ex d(e) IIB or IIC Gb, IEC/EN 60079-0,
IEC/EN 60079-1
Ex zones
Gas Zone 1 optional, Dust Zone 22/21
Guidelines
2014/34/EU
Cooling
Surface-cooled, water-jacket-cooled on
request
No. of poles
2- to 12-pole, multi-pole + pole-changing
versions on request
Voltage/frequency
All common voltages, special designs
in 50 Hz and 60 Hz on request
Degree of protection
IP55 to IP68
Type of construction
All common types of construction +
special types of construction
Enclosure
Cast-iron or steel
Insulation
Class F utilized according to B
Special versions
• For outdoor temperatures -55 to +60 °C
(other temperatures are available on request)
• Installation altitude up to 3000 m (> 3000 m on request)
• Modified windings, for example, for increased ambient temperatures,
installation altitude for optimum electrical values
• Permanent load S1 as well as partial load operation, e.g. S2/S3/S6
• Drive-end located bearing; special bearing for increased axial/radial
forces
• Large electrical variance, such as reduced starting current, modified
torque curve, star-delta start-up, etc.
• CHEMSTAR: Copper rotor as an option
• Metal fan in aluminum, steel or brass
• Monitoring devices such as Pt100, PTC, KTY winding/bearing,
vibration monitoring, etc.
• Country-specific certificates such as EAC (Eurasian Customs Union),
NEPSI (China), China Energy Label, CCOE (India),
IECEx (international)
• Version for offshore, on-deck and/or marine classifications
• Combination with brakes + rotary encoder + forced ventilation
• Enlarged connection system and/or larger terminal box for large cable
cross-sections
© Siemens AG 2016