SIEMENS
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Siemens D 83.1 · 2016
3
Motors without Explosion Protection
LOHER CHEMSTAR and VARIO 1PS0 motor series
General information
■
Technical specifications
(continued)
Electrical design
The insulation system of the 1PS0 motor series is suitable for line
voltages up to 690 V. The connection system (terminal boxes,
terminals) is also designed for this rated voltage.
The explosion-proof motors are equipped with 6 terminals. They
can thus be operated in star or delta. If a voltage variant with
dual voltage, e.g. 400 V
/690 VY is selected, the rated data of
both voltage levels will be stamped on the rating plate.
The motors of the 1PS0 series are manufactured with an
insulation system of thermal class 155 °C. Utilization at rated
operation corresponds to thermal class 130 °C.
Voltage tolerances
The motors are suitable for operation at voltage and frequency
tolerances in accordance with EN 60034-1.
Tests additionally ensure that the permissible limit temperatures
of the exterior surface of the explosion-proof enclosure are not
exceeded when operated continuously at the voltage limits
(± 10 %) in accordance with EN 60079-1.
Operation on a frequency converter
The general use of high-quality insulation systems enables
operation on a frequency converter.
The permissible speed and torque range is stamped on an
additional rating plate.
Monitoring of the winding by PTC thermistors or alternatively
Pt100 is recommended for operation on a frequency converter.
These are installed in the stator winding and monitored by a trip
unit. Motor circuit breakers can then be dispensed with.
Three-phase motors with external cables
Three-phase motors with externally routed connecting cables are
used in machines or ventilation systems in which the electrical
connections are routed via a separately mounted terminal box due
to the space constraints.
Version
The motors correspond to the surface-cooled versions in this
catalog. A gland plate is mounted in place of the terminal box
(Options
G48
/
G49
).
Frame sizes and types of construction:
See dimensional
drawings
Connection cables:
The free length of connection cable
must be specified when ordering. The standard length is 1.5 m.
Two or more cable entries are used in the case of pole-changing
motors or single-speed motors with rated current > 70 A.
The permissible coolant temperature is dependent on the
connection cables used.
Cable types (standard version)
Motors with built-on backstop
If reverse motion of the drive has to be prevented following
switch-off, three-phase motors with mechanical backstop can
be used. Backstops are maintenance-free and have individual
spring-loaded clamping elements. The backstops of the type
CSK are supplied with permanent lubrication. The clamping
elements have a tendency to lift. In backstops of the FXM type
series, the clamping elements lift automatically after approach
due to the centrifugal force. Wear therefore does not occur at
rated speed of the motor.
The backstop is not permitted to be used as protection against
rotation in the wrong direction caused by switching despite the
interlock. The direction of rotation must be specified on ordering.
The motor power ratings are as specified in the selection tables
in this catalog. The assignment of backstops to frame sizes is
specified in the table below. Frame sizes 90 to 112 have the
same dimensions as standard motors. Dimensional drawings
are available for the larger types on request.
Backstops for motors of frame sizes 132 to 355
With the backstops listed in the table above, motors of frame
sizes 132 to 355 can be supplied in IP55 or IP56 degree of
protection. Higher degrees of protection on request.
G_D083_XX_00073
Temperature
class of the
motor
Cable
Type
Max. rated voltage
U
rated
Max.
temperature at
conductor
V
°C
F
Ölflex
500
-40 ... +80
F
NSSHöu-J
1000
-20 ... +80
F
EWKF/SIHF
500
-50 ... +180
Motor
Backstop
Frame size
No. of poles
Type
M
t
Nm
132
2, 4, 6
FXM 51-25 DX
680
160
2, 4, 6
FXM 66-25 DX
1480
180
2, 4, 6
FXM 66-25 DX
1480
200
2, 4, 6, 8
FXM 86-25 DX
2410
225
2, 4, 6, 8
FXM 86-25 DX
2410
250
2, 4, 6, 8
FXM 100-50 DX
6000
280
2, 4, 6, 8
FXM 120-50 SX
10400
315
2, 4, 6, 8
FXM 120-50 SX
10400
355
2
FXM 120-50 SX
10400
355
4, 6
FXM 140-50 SX
15200
© Siemens AG 2016