SIEMENS
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Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Voltages, currents and frequencies
■
Overview
Standard voltages and tolerances
The motors listed in this catalog are supplied with a fixed voltage
(e.g. 400 V). The tolerance band for rated voltage is ±10 %. This
tolerance is in compliance with the standard and is not stamped
on the rating plate. The tolerance band for frequency is ±2 %.
The motors of the LOHER CHEMSTAR and LOHER VARIO series
can be designed without explosion protection and for Ex zones
with a non-standard winding for almost any frequency and any
required line voltage up to 1000 V. The operating data listed in
the power tables applies to the rated voltages specified with
tolerance bands according to EN 60034-1.
EN 60034-1 differentiates between Category A (sum of voltage
deviation and frequency deviation ±5 %) and Category B (sum
of voltage deviation and frequency deviation ±10 %) for voltage
and frequency fluctuations.
The motors can supply their rated torque in both Category A and
Category B.
Tolerance range A (voltage ±5 %):
Motor must be functionally stable in continuous duty.
The temperature rise is permitted to be 10 K higher than the limit
value.
Tolerance range B (voltage ±10 %):
The motor must be functionally stable and is permitted to exhibit
wide variations in characteristic data;
operation over long periods close to the limits of Category B is
not recommended.
Rated current
In some power tables, the rated currents are only specified at a
rated voltage of 400 V. At other voltages, the rated currents vary
in accordance with the inverse of the voltage:
This means:
Example:
According to the power table, the pole-changing motor
ANGA-180MB-42 has a rated current of 31/37 A at 400 V.
The rated current at 230 V is therefore:
Tolerances for electrical values in the power tables
The following tolerances apply to the electrical values listed in
the power tables according to EN 60034-1:
Standard
Range
Range
EN 60034-1
A
B
Voltage deviation
Frequency deviation
± 5 %
± 2 %
± 10 %
+3 %/-5 %
Rating plate data
stamped with rated voltage a
(e.g. 230 V)
a ± 5 %
(z. B. 230 V ± 5 %)
a ± 10 %
(z. B. 230 V
± 10 %)
Efficiency
150 kW: -0.15 (1 –
)
> 150 kW: -0.1 (1 –
)
Power factor
(minimum 0.02, maximum 0.07)
Tightening torque
-15 % und +25 %
Breakdown torque
-10 %
Locked-rotor current
+20 % (no lower limit)
Slip at rated load and
operating temperature
1 kW ±20 % of the guaranteed slip
< 1 kW ±30 % of the guaranteed slip
U
I'
I
U'
=
U I
I'
U'
=
I'
=
=
230
54/64 A
400
31 or 37
–
6
1 – cos
© Siemens AG 2016