BS EN 60034-30-1:2014

What is BS EN 60034-30-1 ‒ Efficiency classes of line operated AC motors about ?

BS EN 60034-30-1 is a part of an international multi-series standard that deals with the aspects of rotating electrical machines.  

BS EN 60034-30-1 specifies efficiency classes for single-speed electric motors that are rated according to IEC 60034-1 or IEC 60079-0, are rated for operation on a sinusoidal voltage supply and: 

• Have a rated power PN from 0.12 kW to 1000 kW 
• Have a rated voltage UN above 50 V up to 1 kV 
• Have 2, 4, 6, or 8 poles
• Are capable of continuous operation at their rated power with a temperature rise within the specified insulation temperature class 
• Are marked with any ambient temperature within the range of –20 °C to + 60 °C 
• Are marked with an altitude up to 4 000 m above sea level 

BS EN 60034-30-1 establishes a set of limit efficiency values based 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. This makes different motor technologies fully comparable with respect to their energy efficiency potential. 

Note 1: Most motors covered by BS EN 60034-30-1 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. 

Note 2: The rated efficiency and efficiency classes are based on 25 °C ambient temperature according to IEC 60034-2-1. 

Note 3: Motors rated for temperatures outside the range – 20 °C and + 60 °C are considered to be of special construction and are consequently excluded from BS EN 60034-30-1. 

Note 4: Smoke extraction motors with a temperature class of up to and including 400 °C are covered by BS EN 60034-30-1.

Who is BS EN 60034-30-1 ‒ Efficiency classes of line operated AC motors for ?

BS EN 60034-30-1 on efficiency classes of line operated AC motors is useful for: 

• Manufacturers and suppliers of rotating electrical machines 
• Safety certification providing entities for rotating electrical machines  
• Dealers and distributors of rotating electrical machines 
• Designers of rotating electrical machines 
• Regulatory authorities 

Why should you use BS EN 60034-30-1 ‒ Efficiency classes of line operated AC motors ?

In order to achieve a significant market share of rotating electrical machines, it is essential for high-efficiency motors to meet national/regional standards for assigned powers in relation to mechanical dimensions (such as frame size, flanges).  

BS EN 60034-30-1 provides you with the methods for global harmonization of energy-efficiency classes of electric motors. It deals with all kinds of electric motors that are rated for line operation (including starting at reduced voltage). It includes all single- and three-phase low voltage induction motors, regardless of their rated voltage and frequency, as well as line-start permanent-magnet motors.  

BS EN 60034-30-1 widens the product range covered in the first edition of IEC 60034-30 significantly. The power range has been expanded (starting at 0.12 kW and ending at 1000 kW). It covers all such technical constructions of electric motors which are rated for on-line operation and not just three-phase, cage-induction motors as in the first edition.  

BS EN 60034-30-1 defines energy-efficiency classes that are independent of dimensional constraints, thus, users in all markets can customize their products, motors with various efficiency classes and maintain the mechanical dimensions of the national/regional standards.