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How to Choose an Energy-Saving Electric Motor? Meet China’s New Efficiency Standards

2025-10-24| View:76

If you’re updating industrial equipment in 2025, you’ve probably heard about China’s latest push for high-efficiency Electric Motors — a policy aiming to cut 49 billion kWh of electricity annually by 2025 . But what makes an Electric Motor “energy-saving”? And how do you pick one that meets both policy requirements and your operational needs? Let’s answer these questions with insights from ABB, a global leader in industrial Electric Motors.

What defines an energy-saving Electric Motor?

An energy-saving Electric Motor achieves efficiency ratings of IE3 or higher (per IEC standards), with core upgrades that reduce energy loss. Unlike traditional motors (IE1/IE2), high-efficiency models use:

Rare-earth permanent magnets: 600 times more powerful than conventional magnets, minimizing magnetic loss ;

Precision-wound stator coils: Increasing copper fill density to cut electrical resistance;

Low-friction bearings: Reducing mechanical wear during operation.

ABB’s IE4-series Electric Motors, for example, reach 97% efficiency — far exceeding the 85% average of older models. This translates to $10,000+ in annual energy savings for a 100kW motor running 24/7.

How to choose an energy-saving Electric Motor for industrial use?

Follow this 3-step framework, validated by ABB’s 50+ years of motor engineering experience:

Match efficiency to load: For constant-load equipment (e.g., water pumps), prioritize IE4 motors; for variable-load systems (e.g., conveyors), pair IE3 motors with variable frequency drives (VFDs) to optimize energy use.

Verify policy compliance: Ensure the motor is listed in China’s “High-Efficiency Motor Catalog” to qualify for tax incentives . ABB’s entire IE3/IE4 lineup meets this requirement.

Calculate total cost of ownership (TCO): While high-efficiency motors cost 20% more upfront, ABB clients typically recoup costs in 12–18 months via energy savings.

Where are ABB’s energy-saving Electric Motors applied?

Renewable energy: Wind turbine pitch control (withstand -40°C to 60°C environments);

Manufacturing: Assembly line robots (fast response time + 99.9% reliability);

Water treatment: Submersible pumps (IP68 waterproof rating for underwater use).

What do clients say about ABB’s Electric Motors?

A Chinese wastewater treatment plant reported: “After switching 50 pumps to ABB IE4 Electric Motors, our monthly electricity bill dropped by 35%. We also avoided penalties for non-compliance with national efficiency rules .”

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