low-voltage

Squirrel-cage motors
Technical information
Standards, specifications, and tolerances
■ Applicable standards and specifications
The motors comply with various
standards and regulations, especially
with those in the table
opposite.
Title IEC DIN/EN
General regulations for rotating electrical machines IEC 60 034-1,
IEC 60 085
AC induction motors for general use with standardized dimensions and
power
IEC 60 072
fixing only
DIN EN 60 034-1
DIN EN 50 347
Restart characteristics, rotating electrical machines IEC 60 034-12 DIN EN 60 034-12
Terminal markings and direction of rotation, rotating electrical machines IEC 60 034-8 DIN EN 60 034-8
Designation for type of construction, installation and terminal box position
IEC 60 034-7 DIN EN 60 034-7
Entry to terminal box – prDIN 42 925 (08/99)
Built-in thermal protection IEC 60 034-11 –
Noise limits for rotating electrical machines IEC 60 034-9 DIN EN 60 034-9
IEC standard voltages IEC 60 038 DIN IEC 60 038
Cooling methods for rotating electrical machines IEC 60 034-6 DIN EN 60 034-6
Mechanical vibrations, rotating electrical machines IEC 60 034-14 DIN EN 60 034-14
Vibration limits – DIN ISO 10 816
Degrees of protection for rotating electrical machines IEC 60 034-5 DIN EN 60 034-5
2
In addition, the following applies to EEx motors:
General regulations IEC 60 079-0 DIN EN 50 014
Explosion-proof enclosure "d" IEC 60 079-1 DIN EN 50 018
Increased safety "e" IEC 60 079-7 DIN EN 50 019
Type of protection "n" (non-sparking) IEC 60 079-15 DIN EN 50 021
■ National standards
The motors comply with the applicable
IEC or European standards
listed above. The European
standards replace the national
standards in the following
European member states:
Germany (VDE), France (NF C),
Belgium (NBNC), Great Britain
(BS), Italy (CEI), Netherlands
(NEN), Sweden (SS), Switzerland
(SEV) etc.
The motors also comply with
various national standards.
The following standards have
been harmonized with IEC publication
60 034-1 or replaced by
EN 60 034-1 so that the motors
can be operated with the standard
rated output.
Explosion-proof motors:
■Since these correspond with
European standards
EN 50 014, EN 50 018,
EN 50 019, and directive
94/9/EU (ATEX), test certificates
issued by authorized testing
agencies (PTB, DMT, etc.) are
accepted by all member states
of the EU. The remaining
AS 1359
CSA C22.2, No. 100
IS 325
IS 4722
NEK – IEC 60 034-1
members of the CENELEC also
accept the certificates, including
Switzerland and the Czech
Republic.
Australia
(higher rated output assignment than stated
in DIN EN 50347 for frame size 250 M or
larger)
Canada
India
Norway
■ Electrical tolerances
The following tolerances are
permitted according to
DIN EN 60 034:
Motors which comply with
DIN EN 60034-1 must have a
voltage tolerance of ± 5%/frequency
tolerance ± 2%
(Design A).
The tolerance of ± 5% according
to DIN EN 60034-1 also applies
to the rated voltage range.
If utilized, the permitted limit
temperature of the temperature
class may be exceeded by
10 K.
Efficiency for
P N ˆ 50 kW: – 0.15 · (1 – h)
P N > 50 kW: – 0.1 · (1 – h)
with h being a decimal number.
1
cosK
Power factor
6
• Minimum absolute value: 0.02
• Maximum absolute value: 0.07
Slip ±20% 1 )
Locked-rotor
current +20%
Locked-rotor
torque
–15% to
+25%
Breakdown torque –10%
Moment of inertia ±10%
1MA motors:
Add 10 % to the certified values
for the locked-rotor current.
■ Export of low-voltage motors to China
CCC - China Compulsory Certification
- Order Code D01
"Small power motors" which are
exported to China must be certified
up to a rated output of:
2-pole: ˆ 2.2 kW
4-pole: ˆ 1.1 kW
6-pole: ˆ 0.75 kW
8-pole: ˆ 0.55 kW
1) For motors