الهيـئــة السعىديــة للمىاصفــبت والمقبيـيـس والجــىدة  
Saudi Standards, Metrology and Quality Org (SASO)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Draft Standard  
 
 
SASO IEC 60034 -30-1:XXXX   
 
ROTATING ELECTRICAL MACHINES –  
 
Part 30 -1: Efficiency classes of line operated AC motors (IE code)  
 
(IEC 60034 -30-1 Ed 1.0, MOD)  
 
 
  
DS – 2 – SASO  IEC 60034 -30-1:xxxx  
 
CONTENTS  
CONTENTS  ................................ ................................ ................................ ..........................  2 
Foreword  ................................ ................................ ................................ .............................  3 
1 Scope  ................................ ................................ ................................ ............................  4 
2 Normative references  ................................ ................................ ................................ .... 5 
3 Terms, definitions and symbols  ................................ ................................ ......................  6 
3.1 Terms and definitions  ................................ ................................ .......................  6 
3.2 Symbols  ................................ ................................ ................................ ...........  7 
4 Efficiency  ................................ ................................ ................................ ......................  7 
4.1 Determination  ................................ ................................ ................................ .. 7 
 General  ................................ ................................ ...........................  7 4.1.1
 Rated voltages, rated frequencies and rated power  ..........................  7 4.1.2
4.1.3    Auxiliary devices  ................................ ................................ ...................  8 
4.2 Rating  ................................ ................................ ................................ ..............  8 
4.3 Classification  and marking  ................................ ................................ ................  8 
 General  ................................ ................................ ...........................  8 4.3.1
 Efficiency classification  ................................ ................................ ... 8 4.3.2
 Motors below IE1 efficiency  ................................ .............................  9 4.3.3
 Minimum Energy Performance standard (MEPS)  ..............................  9 4.3.4
 Marking  ................................ ................................ ...........................  9 4.3.5
4.4 Nominal limits for efficiency classes IE1, IE2, IE3 and IE4  ...............................  10 
 Nominal efficiency limits for IE1  ................................ .....................  10 4.4.1
 Nominal efficiency limits for IE2  ................................ .....................  11 4.4.2
 Nominal efficiency limits for IE3  ................................ .....................  12 4.4.3
 Nominal efficiency limits for IE4  ................................ .....................  13 4.4.4
 Interpolation of nominal efficiency limits of intermediate rated 4.4.5
powers for 60  Hz mains supply frequency  ................................ ...... 13 
5 Registration  ................................ ................................ ................................ .................  14 
 (informative)  Nominal  limits for efficiency class IE5  ................................ ...............  15 Annex  A
Annex B: List of National modifications  ................................ ................................ ................  16 
Bibliography  ................................ ................................ ................................ .......................  22 
 
Table 1 – IE efficiency classification  ................................ ................................ ......................  8 
Table 2 – Nominal efficiency limits (%) for 60  Hz IE1  ................................ ...........................  10 
Table 3 – Nominal efficiency limits (%) for 60  Hz IE2  ................................ ...........................  11 
Table 4 – Nominal efficiency limits (%) for 60  Hz IE3  ................................ ...........................  12 
Table 5 – Nominal efficiency limits (%) for 60  Hz IE4  ................................ ...........................  13 
 DS – 3 – SASO IEC 60034 -30-1:xxxx  
 
INTERNATIONAL ELECTROTECHNICAL COMMISSION  
____________  
 
ROTATING ELECTRICAL MACHINES –  
 
Part 30 -1: Efficiency classes of line operated AC motors (IE  code)  
 
 
Foreword  
 
The Saudi Standards, Metrology and Quality Organization  (SASO) and the Saudi Energy 
Efficiency  Center  (SEEC ) through the Saudi Energy Efficiency Program (SEEP)  prepared this 
standard  for efficiency classes of single -speed, three -phase, cage induction motors, and this 
standard  will apply as a mandatory Saudi s tandard.  
 
This SASO IEC 60034 -30-1:2017  standard is a modified adoption of International Standard 
IEC 60034 -30-1 , (ROTATING ELECTRI CAL MACHINES –Part 30 -1: Efficiency classes of line 
operated AC motors (IE code) ). Standard  has been varied as indicated to take account of 
Kingdom of Saudi Arabia conditions. The modification s are specified in the text of this 
standard and attached in Ann ex B . 
 
The first edition of international IEC  60034 -30-1 cancels and replaces IEC  60034 -30 (2008). It 
also cancels and replaces Annex A of IEC  60034 -31 (2010). In the next revision of 
IEC 60034 -31:2010 this annex will be removed from its contents.  
 
This St andard cancels and replaces SASO IEC 60034 -30-1:2013  , Rotating electrical 
machines – part 30: rotating electrical machines - part 30 -1: efficiency classes of line 
operated ac motors (IE code).  
 
The IE4 class is newly included in international standard IEC 60034 -30-1 2014 this standard. 
The informative definition of IE4, which was previously, included in IEC/TS 60034 -31:2010, is 
therefore outdated.  The new class IE5 is not yet defined in detail bu t is envisaged for potential 
products in a future edition of the standard.   
 
The registration clause is newly included in this standard. It specifies the requirements and 
process of registration. The registration shall be done through registration system 
electronically via SASO website as take in account registration process indicated in clause 5.   DS – 4 – SASO  IEC 60034 -30-1:xxxx  
ROTATING ELECTRICAL MACHINES –  
 
Part 30 -1: Efficiency classes of line operated AC motors (IE  code)  
 
 
 
1 Scope  
This part of SASO IEC 60034 -30-1:2017  specifies efficiency classes for  60 Hz,  single -speed , 
three phase induction  motors that:  
 have a rated power PN from 0,75 kW to 375 kW; 
 have a rated voltage UN above 50 V up to 1 kV;  
 have 2, 4, 6 or 8 poles;  
 motors covered by this standard  are rated for duty type S1 (continuous duty).  
 are marked with any ambient te mperature within the range of –20 °C to + 60 °C;  
NOTE 1 The rated efficiency and efficiency classes are based on 25 °C ambient temperature according to 
IEC 60034 -2-1. 
NOTE 2 Motor s rated for temperatures outside the range – 20 °C and + 60 °C are considered to be of special 
construction and are consequently excluded from this standard.  
NOTE 3 Smoke extraction motors with a temperature class of up to and including 300 °C are covered by this 
standard.  
 are marked with an altitude up to 4 000 m above sea level.  
NOTE 4 The rated efficiency and efficiency class are based on a rating for altitudes up to 1 000 m above sea 
level.  
This standard establishes a set of limit efficiency values base d on frequency, number of poles 
and motor power. No distinction is made between motor technologies, supply voltage or 
motors with increased insulation designed specifically for converter operation even though 
these motor technologies may not all be capable  of reaching the higher efficiency classes 
(see Table 1). This makes different motor technologies fully comparable with respect to their 
energy efficiency potential.  
NOTE 5 Regulators should consider the above constraints when assigning national minimum energy -efficiency 
performance standards (MEPS) with respect to any particular type of motor.  
The efficiency of power -drive systems is not covered by this standard. In particular, motor 
losses due to harmonic content of the supply voltage, losses in cables,  filters and frequency -
converters, are not covered.  
Motors with flanges, feet and/or shafts with mechanical dimensions different from 
IEC 60072 -1 are covered by this standard.  
Geared motors are covered by this standard including those incorporating non -standard 
shafts and flanges.  
Motors completely integrated into a machine are not covered by this standard (for example 
pump, fan and compressor) that cannot be practically tested separately from the machine 
even with provision of a temporary end -shield and dr ive-end bearing. This means the motor 
shall: a) share common components (apart from connectors such as bolts) with the driven unit 
(for example, a shaft or housing) and; b) not be designed in such a way as to enable the 
motor to be separated from the drive n unit as an entire motor that can operate independently 
of the driven unit. That is, for a motor to be out of scope of this standard, the process of 
separation shall render the motor inoperative.  
(TEAO, IC418) Totally enclosed air -over machines, i.e. totally enclosed frame -surface cooled 
machines intended for exterior cooling by a ventilating means external to the machine, are 
covered by this standard. Efficiency testing of such motors may be perfo rmed with the fan DS – 5 – SASO IEC 60034 -30-1:xxxx  
 
removed and the cooling provided by an external blower with a similar airflow rate as the 
original fan.  
• Motors with integrated frequency -converters (compact drives) are not covered by this 
standard when the motor cannot be tested separa tely from the converter. Energy efficiency 
classification of compact drives shall be based on the complete product (PDS : Power Drive 
System) and will be defined in a separate standard.  
NOTE 6 A motor is not excluded when the motor and frequency -converter can be separated and the motor 
can be tested independently of the converter.  
 
The following motors “Excluded motors“ are included in the scope (i.e. will have to 
register in the SASO system) but they are exempted from achieving the efficiency 
requirement:  
 
 Brake motors when the brake is an integral part of the inner motor construction and can 
neither be removed nor supplied by a separate power source during the testing of motor 
efficiency.  
NOTE 7 Brake motors with a brake coil that is integrated into the fl ange of the motor are covered as long as it 
is possible to test motor efficiency without the losses of the brake (for example by dismantling the brake or by 
energizing the brake coil from a separate power source).  
When the manufacturer offers a motor of th e same design with and without a brake the 
test of motor efficiency may be done on a motor without the brake. The determined 
efficiency may then be used as the rating of both motor and brake motor.  
 Submersible motors specifically designed to operate wholly  immersed in a liquid . 
 Motors with cooling methods other than IC0Ax, IC1Ax, IC2Ax, IC3Ax or IC4Ax (see 
IEC 60034 -6); 
 Motors built for a restricted space (high -output design, i.e. smaller frame sizes than usual 
in national standards);  
 Motors specifically built for operation in explosive environments according to IEC  60079 -0 
(due to safety requirements and possible design constraints of explosion proof motors 
such as increased air -gap, reduced starting current, enhanced sealing);  
 Motors for special requirem ents of the driven machine beyond the requirements of the 
IEC 60034 series of standards (such as motors for heavy starting duty, special torque 
stiffness and/or breakdown torque characteristics, large number of start/stop cycles, very 
low rotor inertia);  
 Motors for special characteristics of the grid supply beyond the requirements of the 
IEC 60034 series of standards (such as motors with limited starting current, increased 
tolerances of voltage and/or frequency);  
 Motors with liquid cooling on account of the ir higher power density compared with air 
cooled motors of the same frame size;  
 Smoke extraction motors with a temperature class higher than 300 °C.  
 
2 Normative references  
The following documents, in whole or in part, are normatively referenced in this document and 
are indispensable for its application. For dated references, only the edition cited applies. For 
undated references, the latest edition of the referenced document (including any 
amendments) applies.  
IEC 60034 -1, Rotating electrical machines – Part 1: Rating and performance  
IEC 60034 -2-1, Rotating electrical machines – Part 2 -1: Standard methods for determining 
losses and efficiency from tests (excluding machines for traction vehicles)  DS – 6 – SASO  IEC 60034 -30-1:xxxx  
IEC/TS 60034 -2-3, Rotating electrical machines – Part 2 -3: S pecific test methods for 
determining losses and efficiency of converter -fed AC induction motors  
IEC 60034 -6, Rotating electrical machines – Part 6: Methods of cooling (IC Code)   
IEC/TS 60034 -25, Rotating electrical machines  – Part 25: Guidance for the desi gn and 
performance of a.c. motors specifically designed for converter supply  
IEC 60038, IEC standard voltages  
IEC 60079 -0, Explosive atmospheres – Part 0: Equipment  – General requirements  
IEEE 112 -2004 , Test Procedure for Polyphase Induction Motors and Generators  
CSA C390 -10 Test methods, marking requirements, and energy efficiency levels for three -
phase induction motors  
3 Terms, definitions and symbols  
3.1 Terms and definitions  
For the purposes of this document, the terms and definitions given in IEC 60034 -1 and the 
following apply.  
  3.1.1
single -speed motor  
motor rated for 50  Hz and/or 60  Hz on -line operation  
Note  1 to entry:  Single -speed motors may be capable of frequency converter operation with variable speed.  
  3.1.2
multi -speed motor  
motor rated for 50  Hz and/or 60  Hz on -line operation that has multiple windings or a 
switchable winding to provide two or more different number of poles wi th different 
synchronous speeds  
  3.1.3
variable speed motor  
motor rated for a speed range and supplied by v oltage of v ariable amplitude and frequency  
  3.1.4
brake motor  
motor equipped with an electro -mechanical brake unit operating directly on th e motor shaft 
without couplings  
  3.1.5
geared motor  
motor equipped with an integral gearbox without couplings (i.e. the first gea r whe el is fixed to 
the motor shaft)  
  3.1.6
pump motor  
motor directly attached to a pump without couplings (i.e. the impell er is fixed to the motor 
shaft)  
  3.1.7
average efficiency  
average efficiency value for a motor populatio n of the same design and rating  
  3.1.8
nominal efficiency  
efficiency value required to meet a certain efficiency class according to the eff iciency tables in 
this standard  DS – 7 – SASO IEC 60034 -30-1:xxxx  
 
  3.1.9
rated efficiency  
efficiency value assigned by the manufacturer, equal to the nom inal efficiency value or higher  
3.2 Symbols  
n is the nominal efficiency, %  
N is the rated efficiency, %  
fN is the rated frequency,  Hz 
nN is the rated speed, min–1 
PN is the rated power, kW  
TN is the rated torque, Nm  
UN is the rated voltage, V  
 
4 Efficiency  
4.1 Determination  
 General  4.1.1
This standard deals with single -speed motors operated on -line. Motors operated by 
frequency -converters may have higher losses as compared to on -line (sinusoidal) power 
supply due to the harmonic voltage content (for details see IEC/TS 60034 -25). They are 
covered in part two of thi s standard series.  
In order to make efficienc y class ratings comparable between different motor technologies, all 
tests according to this standard shall be performed on sinusoidal voltage.  
 Efficiency and losses shall be tested in accordance with the method of the individual motor 
type as given in IEC  60034 -2-1 (Method 2 -1-1B) or equivalent standard such as IEEE 112  
method B  and CSA C390 -10 
 
 Rated voltages, rated frequencies and rated power  4.1.2
The rated efficiency shall be determined at rated power PN, rated voltage UN and rated 
frequency fN. 
Motors rated for an extended voltage tolerance (for example 400  V  10 % acc ording  to 
IEC 60038)  shall be assigned a single rated efficiency, i.e. the extended tolerance shall be 
disregarded.  
Motor s with rated voltage/frequency combinations of the same magnetic flux and power, for 
example 230  V/400  V (delta/star) or 230  V/460  V (double -star/star), sh all have only one rated 
efficiency and efficiency  class (IE  code).  
Motors with more than one rated voltage/frequency/power combination should be assigned a 
rated efficiency and a rated efficiency -class (IE  code) for each rated voltage/frequency/power 
combi nation.  
However, as a minimum the lowest efficiency value and the associated IE  code (of all rated 
voltage/frequency/power combinations) shall always be printed on the rating plate.  
All efficiency values and IE  codes shall be available in the product docu mentation (catalogue 
or operating instructions).  
NOTE  For example in Japan the rating combination “200  V/50  Hz – 200 V/60  Hz – 220 V/60  Hz” is commonly 
used for single -speed motors and in Europe the rating combination “380  V/50  Hz – 400 V/50  Hz – 415 V/50  Hz – DS – 8 – SASO  IEC 60034 -30-1:xxxx  
460 V/60  Hz” is sometimes used. For these examples there will be three or four efficiency ratings and there may be 
several different IE  codes.  
4.1.3    Auxiliary devices  
Some electric motors covered by this standard may be equipped with auxiliary devices such 
as shaft seals, external fans, mechanical brakes, back -stops and unidirectional bearings, 
speed sensors, tacho -generators in various combinations.  
However, as long as  these auxiliary devices are not an integral part of the basic motor design, 
the determination of efficiency in all possible combinations is not practical. Tests for efficiency 
of such modified standard motors shall be performed on basic motors with origin al cooling 
without auxiliary devices installed.  
The losses of a separately driven fan are to be included in the efficiency determination 
procedure when the external fan is an integral part of the basic motor construction. When the 
external fan is just an optional add -on to a mass -produced motor, which normally carries a 
shaft -mounted fan, the losses of the basic motor (with the shaft -mounted fan) can be used.  
Angular -contact bearings (thrust bearings) for vertical mounted motors may be replaced by 
standard  bearings during efficiency testing. Such motors may be tested horizontally.  
Some types of motors ( such as  geared motors, pump motors and others) are equipped with 
shaft seals to prevent ingress of oil or water into the motor. External seals shall be remov ed 
for efficiency testing. This applies only to seals that are accessible from the outside without 
dismantling of the motor (dismantling of the fan -cover and the fan is accepted).  
Electro -mechanical brakes shall be removed during testing of motor efficienc y. When the 
motor construction prohibits a removal of the brake, the brake -coil shall be energized from a 
separate power source and the energy consumption of the brake -coil shall be disregarded in 
the calculation of motor efficiency.  
4.2 Rating  
The efficiency declared by the manufacturer on the rating plate (rated efficiency) shall be 
greater or equal to the nominal efficiency as defined in this standard (according to the 
efficiency class (IE  code) on the rating plate).  
The full -load efficiency of any motor, wh en tested at rated voltage and rated frequency shall 
not be less than the rated -/classification efficiency minus the tolerance of the total losses in 
accordance with IEC 60034 -1. 
It is recommended to report efficiencies at 50  %, 75  % and full load in the product 
documentation. For the purpose of this standard only the efficiency at rated power applies.  
Variations in materials, manufacturing processes and testing result in motor -to-motor 
efficiency variations for a given motor design; the full -load efficiency for a large population of 
motors of a single design is not a unique value but rather a band of efficiency. Therefore, the 
energy  efficiency limits given in this standard are nom inal.  
4.3 Classification and marking  
 General  4.3.1
The designation of the energy  efficiency class consists of the letters “IE” (short for 
International Energ y efficiency class), directly followed by a numeral representing the 
classification according to Table 1. 
 Efficiency classification  4.3.2
Table 1 – IE efficiency classification  
Designation  Definition  
IE1 Motors with a rated full -load efficiency equal to or exceeding the limits listed in ‎4.4.1 . 
IE2 Motors with a rated full -load efficiency equal to or exceeding the limits listed in ‎4.4.2 . 
IE3 Motors with a rated full -load efficiency equal to or exceeding the limits listed in ‎4.4.3  DS – 9 – SASO IEC 60034 -30-1:xxxx  
 
IE4 Motors with a rated full -load efficiency equal to or exceeding  the limits listed in ‎4.4.4 .  
IE5 Envisaged for a future edition of this standard. See Annex A.  
 
 Motors below IE1 efficiency  4.3.3
Some motors have rated efficiencies below the limits given in Table 2. No IE code marking of 
these motors shall be required.  
 Minimum Energy Performance standard ( MEPS )  4.3.4
IE3 (or equivalent e.g. NEMA premium) is the  minimum energy performance that is allowed  to 
be manufactured and imported in  the Kingdom . 
 
 Marking  4.3.5
Rating plate(s) shall be durably marked with the items in the following list : 
- The manufacturer's name or mark  
- The country of manufacture  
- The manufacturer's serial number, or identification mark  
- The manufacturer's machine code.  
- The number of phases  
- The rated efficiency and the IE  code  (or equivalent) , for example “IE 3 – 94,0 %” 
- The class(es) of rating of the machine if designed for other than rating for continuous  running duty S1  
- The rated out put(s) or range of rated output  
- The rated volta ge(s) or range of rated voltage  
- The rated frequency  
- The rated current(s) or range of rated current  
- The rated speed(s) or range of rated speed  and number of poles  
- The rated power factor(s)  
- The maximum ambient air temperature, if other than 40 °C.  
- The minimum ambient air temperature, if other than -15 °C.  
- The altitude for which the machine is designed, if exceeding 1 000 m above sea -level 
 
 
 
 
 
 
 
 
 
 
 
 
 DS – 10 – SASO  IEC 60034 -30-1:xxxx  
 
4.4 Nominal limits for efficiency classes IE1, IE2, IE3 and IE4  
NOTE  Shaded areas in the tables indicate changes compared to the previous edition of this standard.  
 Nominal efficiency limits for IE1  4.4.1
 
Table 2 – Nominal efficiency limits (%) for 60  Hz IE1  
PN 
kW Number of poles /synchronous speed  
min–1 
2/3600  4/1800  6/1200  8/900 
0,75  74,0  77,0  72,0  64,0  
1,1 78,5  79,0  75,0  73,5  
1,5 81,0  81,5  77,0  77,0  
2,2 81,5  83,0  78,5  78,0  
3,7 84,5  85,0  83,5  80,0  
5,5 86,0  87,0  85,0  84,0  
7,5 87,5  87,5  86,0  85,0  
11 87,5  88,5  89,0  87,5  
15 88,5  89,5  89,5  88,5  
18,5  89,5  90,5  90,2  88,5  
22 89,5  91,0  91,0  90,2  
30 90,2  91,7  91,7  90,2  
37 91,5  92,4  91,7  91,0  
45 91,7  93,0  91,7  91,0  
55 92,4  93,0  92,1  91,5  
75 93,0  93,2  93,0  92,0  
90 93,0  93,2  93,0  92,5  
110 93,0  93,5  94,1  92,5  
150 up to 375 94,1  94,5  94,1  92,5  
 
 
 
 DS – 11 – SASO IEC 60034 -30-1:xxxx  
 
 Nominal efficiency limits for IE2   4.4.2
Table 3 – Nominal efficiency limits (%) for 60  Hz IE2  
PN 
kW Number of poles /synchronous speed  
min–1 
2/3600  4/1800  6/1200  8/900  
0,75  75,5  78,0  73,0  66,0  
1,1 82,5  84,0  85,5  75,5  
1,5 84,0  84,0  86,5  82,5  
2,2 85,5  87,5  87,5  84,0  
3,7 87,5  87,5  87,5  85,5  
5,5 88,5  89,5  89,5  85,5  
7,5 89,5  89,5  89,5  88,5  
11 90,2  91,0  90,2  88,5  
15 90,2  91,0  90,2  89,5  
18,5  91,0  92,4  91,7  89,5  
22 91,0  92,4  91,7  91,0  
30 91,7  93,0  93,0  91,0  
37 92,4  93,0  93,0  91,7  
45 93,0  93,6  93,6  91,7  
55 93,0  94,1  93,6  93,0  
75 93,6  94,5  94,1  93,0  
90 94,5  94,5  94,1  93,6  
110 94,5  95,0  95,0  93,6  
150 95,0  95,0  95,0  93,6  
185 95,4  95,0  95,0  93,6  
220 up to 335  95,4  95,4  95,0  93,6  
375 95,4  95,8  95,0  94,1  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 DS – 12 – SASO  IEC 60034 -30-1:xxxx  
 Nominal efficiency limits for IE3  4.4.3
 
Table 4 – Nominal efficiency limits (%) for 60  Hz IE3  
PN 
kW Number of poles / synchronous speed  
min–1 
2/3600  4/1800  6/1200  8/900 
0,75  77,0  83,5  82,5  75,5  
1,1 84,0  86,5  87,5  78,5  
1,5 85,5  86,5  88,5  84,0  
2,2 86,5  89,5  89,5  85,5  
3,7 88,5  89,5  89,5  86,5  
5,5 89,5  91,7  91,0  86,5  
7,5 90,2  91,7  91,0  89,5  
11 91,0  92,4  91,7  89,5  
15 91,0  93,0  91,7  90,2  
18,5  91,7  93,6  93,0  90,2  
22 91,7  93,6  93,0  91,7  
30 92,4  94,1  94,1  91,7  
37 93,0  94,5  94,1  92,4  
45 93,6  95,0  94,5  92,4  
55 93,6  95,4  94,5  93,6  
75 94,1  95,4  95,0  93,6  
90 95,0  95,4  95,0  94,1  
110 95,0  95,8  95,8  94,1  
150 95,4  96,2  95,8  94,5  
185 up to 375 95,8  96,2  95,8  95,0  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 DS – 13 – SASO IEC 60034 -30-1:xxxx  
 
 
 Nominal efficiency limits for IE4  4.4.4
 
Table 5 – Nominal efficiency limits (%) for 60  Hz IE4  
PN 
kW Number of poles / synchronous speed  
min–1 
2/3600  4/1800  6/1200  8/900 
0,75  82,5  85,5  84,0  78,5  
1,1 85,5  87,5  88,5  81,5  
1,5 86,5  88,5  89,5  85,5  
2,2 88,5  91,0  90,2  87,5  
3,7 89,5  91,0  90,2  88,5  
5,5 90,2  92,4  91,7  88,5  
7,5 91,7  92,4  92,4  91,0  
11 92,4  93,6  93,0  91,0  
15 92,4  94,1  93,0  91,7  
18,5  93,0  94,5  94,1  91,7  
22 93,0  94,5  94,1  93,0  
30 93,6  95,0  95,0  93,0  
37 94,1  95,4  95,0  93,6  
45 94,5  95,4  95,4  93,6  
55 94,5  95,8  95,4  94,5  
75 95,0  96,2  95,8  94,5  
90 95,4  96,2  95,8  95,0  
110 95,4  96,2  96,2  95,0  
150 95,8  96,5  96,2  95,4  
185 96,2  96,5  96,2  95,4  
220 96,2  96,8  96,5  95,4  
250 up to 375 96,2  96,8  96,5  95,8  
 
NOTE  Table  5 supersede Annex A of IEC 60034 -31:2010 . 
 
 Interpolation of nominal efficiency limits of intermediate rated powers for 4.4.5
60 Hz mains supply frequency  
Normative, nominal limits are given in Tables 3, 5, 7 and 9. Normative, nominal limits of 60  Hz 
motors having rated powers not defined in the tables shall be determined as follows:  
 The efficiency of a rated power at or above the midpoint between two conse cutive power 
values from the tables shall be the higher of the two efficiencies.  
 The efficiency of a rated power below the midpoint between two consecutive power values 
from the tables shall be the lower of the two efficiencies.  
 
 
 
 DS – 14 – SASO  IEC 60034 -30-1:xxxx  
5 Registration  
5.1 General  
Product  registration is mandatory if motor is in the scope (including excluded motors) of the 
standard, whereby information about registration requirements will be available in the website 
of the Saudi Standards, Metrology, and Quality Organization (SASO),  and reference shall be 
made to the separate SASO registration forms and requirements.  
Applications  shall be submitted through the registration system electronically via SASO 
website. The applicant shall fulfil all updated requirements of the electronic registration  
system and any new requirement, procedure , and regulation  required by SASO.  
 
5.2 Type of documents needed for registration under the scope of this standard  
For registration, a test report covering the  submitted produ ct shall be attached, except for 
excluded motors the test can be replaced by a declaration.  
Note: this test report  or declaration  is not exclusive from other documents required by SASO 
(e.g. Safety,…) for registration . DS – 15 – SASO IEC 60034 -30-1:xxxx  
 
 Annex  A
(informative)  
 
Nominal  limits for efficiency class IE5  
 
The levels of the IE5 efficiency class are envisaged to be incorporated into the next edition of 
this standard and/or in part two of this standard series. It is the goal to reduce the losses of 
IE5 by some 20  % relative to  IE4. Motor technologies for IE5 are currently not well developed 
and not commercially available.  
Further energy -efficiency optimizations will have to focus on improved system efficiency 
throughout the entire operating load cycle including all system -losses (converter, filter, 
cables, motor , etc.) , see EN 52800.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 DS – 16 – SASO  IEC 60034 -30-1:xxxx  
Annex B : List of National modifications  
(informative)  
The text of the intern ational Standard IEC 60034 -30-1:2014 was approved by Saudi 
Standards, Metrology and Quality Organization as a Saudi Standard with agreed modification 
as indicated below.  
 
Clause/Subclause  Text as specified in IEC 60034 -30-
1 2014   National Modification  
Foreword   Foreword  Replaced by a national 
foreword  
1. Scope                                            
 have a rated power PN from 0,12 
kW to 1  000 kW;  
  
Replace  “0.12 to 1000 kW” 
with “ 0.75 to 375 kW ” 
 
1. Scope                                            are capable of continuous operation 
at their rated power with a 
temperature rise within the 
specified insulation temperature 
class;  
  Replace d by “Motors 
covered by this standard 
are rated for duty type S1 
(continuous duty)”  
  
1. Scope                                           NOTE 1  Most motors covered by  this 
standard are rated for duty type S1 
(continuous duty). However, some motors 
that are rated for other duty cycles are still 
capable of continuous operation at their 
rated power and these motors are also 
covered.  
 Delete  “NOTE 1  Most motors 
covered by this standard are 
rated for duty type S1 
(continuous duty). However, 
some motors that are rated for 
other duty cycles are still 
capable of continuous operation 
at their rated power and these 
motors are also covered.”  
 
1. Scope                                           NOTE 2  Change the sequence to  
“NOTE 1”  
1. Scope                                           NOTE 3  Change the sequence to  
“NOTE 2”  
1. Scope                                           NOTE 4  Change the sequence to  
“NOTE 3”  
1. Scope                                           NOTE 5  Change the sequence to  
“NOTE 4”  
1. Scope                                           NOTE 6  Change the sequence to  
“NOTE 5”  
1. Scope                                           NOTE 7 Change the sequence to  
“NOTE 6”  
1. Scope                                           NOTE 8 Change the sequence to  
“NOTE 7” 
1. Scope                                           NOTE 4  Smoke extraction motors with a 
temperature class of up to and including 
400 °C are covered by this standard.  
 Replaced by”  NOTE 3  
Smoke extraction motors with a 
temperature class of up to and 
including 300 °C  are covered by 
this standard.  DS – 17 – SASO IEC 60034 -30-1:xxxx  
 
 
1. Scope                                           1. Scope                                            Text Ad ded “Motors 
completely integrated into a 
machine are not covered by 
this standard (for example 
pump, fan and compressor) 
that cannot be practically 
tested separately from the 
machine even with provision 
of a temporary end -shield and 
drive -end bearing. This  
means the motor shall: a) 
share common components 
(apart from connectors such 
as bolts) with the driven unit 
(for example, a shaft or 
housing) and; b) not be 
designed in such a way as to 
enable the motor to be 
separated from the driven unit 
as an entire m otor that8 can 
operate independently of the 
driven unit. That is, for a 
motor to be excluded from 
this standard, the process of 
separation shall render the 
motor inoperative.  
(TEAO, IC418) Totally 
enclosed air -over machines, 
i.e. totally enclosed frame -
surface cooled machines 
intended for exterior cooling 
by a ventilating means 
external to the machine, are 
covered by this standard. 
Efficiency testing of such 
motors may be performed 
with the fan removed and the 
cooling provided by an 
external blower with a s imilar 
airflow rate as the original 
fan.”  
 
1. Scope                                           1. Scope                                                 Text Added“ Motors with 
integrated frequency -
converters (compact drives) 
are not covered by this 
standard  when the motor 
cannot be tested separately 
from the converter. Energy 
efficiency classification of 
compact drives shall be 
based on the complete 
product (PDS : Power Drive 
System) and will be defined in 
a separate standard.  
1. Scope    (i.e. Single -speed motors with 10 or Delete  “Single -speed DS – 18 – SASO  IEC 60034 -30-1:xxxx  
“Excluded ar e”)                                     more poles or multi -speed 
motors.  
 motors with 10 or more 
poles or multi -speed 
motors.”  
 
1. Scope            
(i.e. “Excluded 
are”)                                Motors with mechanical 
commutators (such as DC 
motors).  
       Delete “ Motors with 
mechanical commutators 
(such as DC motors).”  
 
1. Scope       (i.e. 
“Excluded are”)                                      
Motors completely integrated into a 
machine… => …similar airflow rate 
as the original fan  Delete  “Motors completely 
integrated into a 
machine… =>…similar 
airflow rate as the original 
fan. 
 
1. Scope       (i.e. 
“Excluded are”)                                      
Motors with integrated frequency -
converters (compact drives) when 
the motor cannot be tested 
separately from the converter. 
Energy efficiency classification of 
compact drives shall be based on 
the complete product (PDS : Power 
Drive System) and will be defined 
in a separate stan dard.  
NOTE 7  A motor is not excluded when the 
motor and frequency -converter can be 
separated and the motor can be tested 
independently of the converter.  
 Delete  “Motors with 
integrated frequency -
converters (compact 
drives) when the motor 
cannot be tested 
separately from the 
converter. Energy 
efficiency classification of 
compact drives shall be 
based on the complete 
product (PDS : Power 
Drive System) and will be 
defined in a separate 
standard.  
NOTE 7  A motor is not 
excluded when the motor and 
frequency -conve rter can be 
separated and the motor can be 
tested independently of the 
converter.”  
 
1. Scope       (i.e. 
“Excluded are”)                                      
 Smoke extraction motors with a 
temperature class above 400 °C.  
  Delete “ Smoke extraction 
motors with a temperature 
class above 400 °C.”  
 
1. Scope       (i.e. 
“Excluded are”)                                      Add :  
 Motors with cooling 
methods other than IC0Ax, 
IC1Ax, IC2Ax, IC3Ax or 
IC4Ax (see IEC  60034 -6); 
 Motors built for a 
restricted space (high -
output design, i.e. smaller 
frame sizes than usual in 
national standards);  
 Motors specifically built for 
operation in explosive 
environments according to 
IEC 60079 -0 (due to 
safety requirements and 
possible design DS – 19 – SASO IEC 60034 -30-1:xxxx  
 
constraints of explosion 
proof motor s such as 
increased air -gap, 
reduced starting current, 
enhanced sealing);  
 Motors for special 
requirements of the driven 
machine beyond the 
requirements of the 
IEC 60034 series of 
standards (such as motors 
for heavy starting duty, 
special torque stiffness 
and/or breakdown torque 
characteristics, large 
number of start/stop 
cycles, very low rotor 
inertia);  
 Motors for special 
characteristics of the grid 
supply beyond the 
requirements of the 
IEC 60034 series of 
standards (such as motors 
with limited starting 
current, increased 
tolerances of voltage 
and/or frequency);  
 Motors with liquid cooling 
on account of their higher 
power density compared 
with air cooled motors of 
the same frame size;  
 Smoke extraction motors 
with a temperature class 
higher than 300 °C.  
 
2. Normative 
references  
                                          2  Normative references  Add :  
IEEE 112 -2004 , Test 
Procedure for Polyphase 
Induction Motors and 
Generators  
 
2. Normative 
references  
  
2  Normative references  Add:  
CSA C390 -10 TEST 
METHODS, MARKING 
REQUIREMENTS, AND 
ENERGY EFFICIENCY 
LEVELS FOR THREE -PHASE 
INDUCTION MOTORS  
 
4. Fields of 
application  
 4 Fields of application  
 Remove  “The clause 4 Fields 
of application “and replace 
the sequence number with “ 4  
Efficiency “  
 
4. Efficiency  
  
Efficiency and losses shall be tested in 
accordance with the preferred method Replace by  “  
Efficiency and losses shall be 
tested in accordance with the DS – 20 – SASO  IEC 60034 -30-1:xxxx  
of the individual motor type as given in 
IEC 60034 -2-1. method of the individual motor 
type as given in IEC  60034 -2-
1(Method 2 -1-1B) or 
equivalent such as IEEE 112, 
Method B. CSA C390 -10 
 
 
4. Efficiency  
  New clause added: 
5.1.1 Minimum Energy 
Performance standard 
(MEPS)  
4. Marking  The r ated efficiency and the IE code  
(or equivalent) shall be durably marked  
on the rating plate, for example “IE3 –  
94,0 %”.  Deleted:  The rated efficiency 
and the IE code (or 
equivalent) shall be durably 
marked on the rating plate, for 
example “IE3 – 94,0 %”.  
 
Replaced by:  
 
Rating plate(s)  shall be 
durably marked with the items 
in the following list:  
-The manufacturer's name or 
mark  
-The country of manufacture  
-The manufacturer's serial 
number, or identification mark  
-The manufacturer's machine 
code.  
-The number of phases  
-The rated efficiency and the 
IE code (or equivalent), for 
example “IE3 – 94,0 %”  
-The class(es) of rating of the 
machine if designed for other 
than rating for continuous 
running duty S1  
-The rated output(s) or range 
of rated output  
-The rated voltage(s) or range 
of rated voltage  
-The rated frequency  
-The rated current(s) or range 
of rated current  
-The rated speed(s) or range 
of rated speed and number of 
poles  
-The rated power factor(s)  
-The maximum ambient air 
temperature, if other than 
40 °C.  
-The minimum ambient ai r 
temperature, if other than -
15 °C.  
-The altitude for which the 
machine is designed, if 
exceeding 1 000 m above 
sea-level  DS – 21 – SASO IEC 60034 -30-1:xxxx  
 
4 Motors below 
IE1 efficiency  
 Some motors have rated efficiencies  
below the limits given in Tables 2. No 
marking of these motors shall be 
required.            Deleted: Some motors have 
rated efficiencies below the 
limits given in Tables 2. No 
marking of these motors shall 
be required.  Replaced  by: 
Some motors have rated 
efficiencies below the limits 
given in Tables 2. No IE code 
mark ing of these motors shall 
be required  
5. Registration  - New clause Added with 
sequence number “ 5 
Registration”  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 DS – 22 – SASO  IEC 60034 -30-1:xxxx  
 
 
 
 
Bibliography  
IEC 60034 -5, Rotating electrical machines – Part 5: Degrees of protection provided by the 
integral design of rotating electrical machines (IP code) – Classification  
IEC 60034 -12, Rotating electrical machines – Part 12: Starting performance of single -speed 
three -phase cage induction motors  
IEC/TS 60034 -31:2010, Rotating electrical machines – Part 31: Sel ection of energy -efficient 
motors including variable speed applications – Application guide  
IEC 60072 -1, Dimensions and output series for rotating electrical machines – Part 1: Frame 
numbers 56 to 400 and flange numbers 55 to 1080  
ISO 3, Preferred numbers – Series of preferred numbers  
EN 12101 -3, Smoke and heat control systems – Part 3: Specification for powered smoke and 
heat exhaust ventilators  
EN 50347, General purpose three -phase induction motors having standard dimensions and 
outputs – Frame numbers 56  to 315 and flange numbers 65 to 740  
EN 52800, Energy efficiency for power drive systems, motor starters, power electronics and 
their driven applications  
JIS C 4212 (Japanese Industrial Standard), Low-voltage three -phase squirrel -cage high -
efficiency induc tion motors   
NBR 17094 -1, Rotating electrical machines – Induction motors – Specification  
NEMA MG1, Motors and Generators  
SANS 1804 -1 (South African Standard), Induction motors – Part 1: IEC requirements  
 
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