YE3, YE4, YE5 Motors: How Much Electricity Can You Save in a Year? The Answer Will Surprise You!
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Hi everyone, I’m Kicky from DONGCHUN MOTOR which have experience in the motor industry for over 20 years. From design to production, quality control to application, I’ve seen it all. Today, let’s talk about motor efficiency levels and see how much electricity YE3, YE4, and YE5 motors can save you in a year!
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1. What Are Motor Efficiency Levels?
Simply put, motor efficiency levels tell you how “energy-saving” a motor is. According to the Chinese standard GB18613-2020, motors are divided into three efficiency levels:
- Level 1 (YE5): Most energy-efficient, with an efficiency of ≥96.8%.
- Level 2 (YE4): Moderately energy-efficient, with an efficiency of ≥96.0%.
- Level 3 (YE3): Standard energy-efficient, with an efficiency of ≥95.2%.
The higher the level, the more energy-efficient the motor is, and the less electricity it consumes.
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2. How to Calculate Electricity Consumption?
The electricity consumption of a motor can be calculated using this formula:
M=(P×h)/η
- \( M \): Electricity consumption (kWh)
- \( P \): Motor power (kW)
- \( h \): Operating hours (hours)
- \(η): Motor efficiency
Let’s take a 110kW motor as an example. If it runs 8 hours a day and operates 365 days a year, we can calculate the annual electricity consumption for different efficiency levels.
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3. Electricity Consumption Comparison: YE3, YE4, YE5
| Efficiency Level | Efficiency (η) | Annual Electricity Consumption (kWh) |
|------------------|----------------|--------------------------------------|
| YE5 | 96.8% | 331,818 |
| YE4 | 96.0% | 334,583 |
| YE3 | 95.2% | 337,395 |
From the table, we can see that YE5 is the most energy-efficient, while YE3 consumes the most electricity.
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4. How Much Electricity Can You Save?
- YE5 vs YE3:
- Electricity saved: 5,577 kWh/year
- Savings rate: 1.65%
- YE4 vs YE3:
- Electricity saved: 2,812 kWh/year
- Savings rate: 0.83%
- YE5 vs YE4:
- Electricity saved: 2,765 kWh/year
- Savings rate: 0.83%
While the savings rate might seem small, the actual amount of electricity saved is significant, especially for high-power motors or equipment that runs for long hours.
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5. Saving Electricity = Saving Money!
Assuming an industrial electricity rate of $0.12/kWh, let’s calculate the cost savings:
- Cost saved: 5,577 × 0.12 = $669.24/year
- YE4 vs YE3:
- Cost saved: 2,812 × 0.12 = $337.44/year
- YE5 vs YE4:
- Cost saved: 2,765 × 0.12 = $331.80/year
For one motor, choosing YE5 over YE3 can save you over $3,300 in 5 years! If you have multiple motors or higher-power motors, the savings will be even greater.
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6. My Recommendations
1. Motor Selection:
- For long-running motors, choose YE5 for maximum energy savings.
- For short-term or intermittent use, YE4 offers a good balance of cost and efficiency.
2. Motor Maintenance:
- Regularly maintain your motors to keep them running efficiently.
- Avoid overloading to reduce energy consumption and extend motor life.
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7. Conclusion
High-efficiency motors might cost more upfront, but they save you money in the long run. Choosing the right motor is not just an economic decision—it’s also a step toward a greener future. I hope this breakdown helps you make an informed choice!
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Let’s Discuss!
- Have you used YE5 motors? What’s your experience?
- What factors do you consider when choosing a motor? Let’s chat in the comments!
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