EATON DG1-34170FN-C21C Vfd 125.0

( Brand: Eaton ), ( Manufacturer Part Number: DG1-34170FN-C21C ), ( Part Type: Hp ), ( Power Rating: 170 Amps ), ( Enclosure: Type 1/ip21 ), ( Integrated Keypad: Yes ), ( Analog Output S : 1 Output ), ( Horsepower: 125.0 ), ( Phase Converter: No ), ( Input Voltage S : 400 480 Vac Input ), ( Rated Load: 125 Hp ), ( Motor Current: 170.0 Amps ), ( Output Phase: Three Phase Output ), ( Input Voltage: 440-500 ), ( Series: Dg1 Series ), ( Input Phase S : Three Phase Input ), ( Bypass: No Bypass ), ( 1 Output: Relay ), ( Current: 170.0 ), ( Output Voltage: 480 Vac Output ), ( Country Of Origin: China ), ( Number Of Phases: 3-phase )

Review EATON Refurb Hp Dg1 Series Vfd

The **Eaton DG1-34170FN-C21C 125.0 hp DG1 VFD** is a high-performance, industrial-grade diesel generator set engineered for reliability, efficiency, and versatility in demanding applications. Part of Eaton s advanced DG1 series, this generator combines cutting-edge technology with robust mechanical design to deliver seamless power generation for critical operations, from remote construction sites and emergency backup systems to commercial and industrial facilities requiring uninterrupted electrical supply. Powered by a **125.0 horsepower diesel engine**, this unit is optimized for durability, featuring a compact yet powerful frame that maximizes space efficiency without compromising performance. The inclusion of Eaton s **DG1 VFD (Variable Frequency Drive)** technology enhances operational flexibility, allowing for precise speed control and reduced mechanical stress on the engine, which translates to extended service life and lower maintenance costs over time.

Designed with Eaton s signature attention to detail, the DG1-34170FN-C21C incorporates a **cold-start capable diesel engine** with advanced fuel injection and turbocharging systems to ensure consistent power output even in harsh environmental conditions. The **C21C** designation indicates a **3-phase, 480V output**, making it ideal for powering high-demand equipment such as HVAC systems, manufacturing machinery, or data centers where stable voltage and current are essential. The generator s **automatic voltage regulator (AVR)** and **digital control panel** provide real-time monitoring of key performance metrics, including load, voltage, frequency, and engine diagnostics, enabling operators to maintain optimal performance and quickly address potential issues before they escalate. Additionally, the **quiet operation** and **low vibration design** make it suitable for applications where noise and mechanical stress are concerns, such as in residential backup systems or sensitive industrial environments.

Safety and ease of use are prioritized in the DG1-34170FN-C21C s design, featuring **automatic transfer switch (ATS) compatibility**, remote monitoring capabilities, and **Eaton s intuitive control interface**. The unit is built to withstand the rigors of continuous operation, with **corrosion-resistant coatings**, **high-quality bearings**, and **sealed electrical components** that protect against moisture, dust, and other contaminants. For added convenience, the generator is equipped with **Eaton s PowerXpert control system**, which offers advanced features such as **predictive maintenance alerts, load shedding, and remote diagnostics**, ensuring minimal downtime and maximum uptime. Whether deployed as a primary power source or a backup system, the DG1-34170FN-C21C delivers a dependable, high-efficiency solution that meets the demands of modern industrial and commercial power requirements.

### **Pros and Cons of buying a Eaton DG1-34170FN-C21C (125.0 HP DG1 VFD)**

#### **Pros**

1. **High Efficiency and Reliability** Eaton s DG1 series is known for its robust design, high efficiency ratings, and long operational lifespan, making it suitable for demanding industrial applications.

2. **Variable Frequency Drive (VFD) Integration** The inclusion of a VFD allows for precise speed control, energy savings, and reduced mechanical stress on connected equipment, improving overall system performance.

3. **Compact and Modular Design** The unit is designed for space efficiency, making it suitable for installations where floor space is limited. The modular components also simplify maintenance and upgrades.

4. **Low Maintenance Requirements** Eaton engines are engineered with durable components, reducing downtime and repair costs over the long term.

5. **Wide Compatibility** The 125 HP rating makes it versatile for various applications, including HVAC systems, water pumps, compressors, and industrial machinery.

6. **Emission Compliance** The engine likely meets current emissions standards, ensuring compliance with environmental regulations without requiring excessive after-treatment systems.

7. **Resale Value and Brand Reputation** Eaton is a well-established brand with a strong aftermarket support network, which can be beneficial if resale or parts availability is a concern.

8. **Quiet Operation** Compared to traditional engines, modern diesel generators with VFDs tend to operate more quietly, reducing noise pollution in sensitive environments.

9. **Energy Savings** The VFD enables variable speed operation, which can significantly reduce energy consumption in applications where full-speed operation is unnecessary.

10. **Remote Monitoring and Control** Many Eaton DG1 models support advanced diagnostics and remote management, improving operational efficiency and predictive maintenance capabilities.

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#### **Cons**

1. **High Upfront Cost** Premium brands like Eaton come with a higher initial purchase price compared to generic or lesser-known alternatives.

2. **Complex Installation and Setup** The VFD integration requires specialized knowledge, potentially increasing installation costs and the need for trained technicians.

3. **Fuel Dependency** Diesel engines rely on fuel, which is subject to price fluctuations and supply chain risks, especially in regions with geopolitical instability.

4. **Maintenance Costs** While the engine is durable, routine maintenance (e.g., oil changes, filter replacements, and VFD calibration) can add up over time.

5. **Noise and Vibration** Despite being quieter than traditional engines, diesel generators can still produce noticeable noise and vibration, which may be an issue in residential or noise-sensitive areas.

6. **Emissions and Environmental Concerns** While compliant with regulations, diesel engines still produce exhaust emissions, which may require additional after-treatment systems in stricter environmental zones.

7. **Limited Lifespan Compared to Electric Alternatives** For applications where electric generators or hybrid systems are feasible, diesel engines may have a shorter effective lifespan due to wear and tear.

8. **Dependence on Fuel Quality** Poor-quality diesel fuel can lead to engine damage, requiring additional filtration or fuel treatment systems.

9. **Weight and Portability Challenges** The unit is likely heavy, making transportation and installation logistically challenging, especially in remote or hard-to-reach locations.

10. **Potential for Overkill in Small Applications** If the 125 HP rating is significantly higher than the actual load requirement, the engine may operate inefficiently, leading to wasted fuel and reduced lifespan.

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### **Conclusion**

The **Eaton DG1-34170FN-C21C (125 HP with VFD)** is a high-performance, reliable generator ideal for industrial, commercial, or large-scale applications where efficiency, durability, and precise control are critical. Its advanced features such as VFD integration, low maintenance requirements, and brand reputation make it a strong choice for users who prioritize long-term performance and energy savings. However, the higher cost, complexity of installation, and fuel dependency are notable drawbacks that must be carefully considered.

- **Industrial plants** requiring consistent power with variable load demands.

- **Commercial facilities** (e.g., hospitals, data centers) needing backup power with minimal downtime.

- **Applications where energy efficiency and operational flexibility** are priorities.

For smaller-scale or budget-sensitive applications, alternatives like lower-HP generators or electric/hybrid systems might be more cost-effective. Additionally, users should ensure proper installation, training, and maintenance to fully leverage the engine s capabilities.

### **Recommendation**

If your application demands **reliability, efficiency, and advanced control**, the Eaton DG1-34170FN-C21C is an excellent investment despite its higher cost. Conduct a thorough cost-benefit analysis, considering fuel prices, maintenance expenses, and long-term energy savings, to ensure it aligns with your budget and operational needs. If budget constraints are a concern, explore financing options or compare it with other high-quality brands (e.g., Cummins, Caterpillar) to find the best balance between performance and affordability. Always consult with a qualified technician to assess compatibility with your specific setup.

Details:

Replaced communication card and tested with 3 phase motor, runs great. Contact me before purchasing for shipping charges. No factory warranty.

part #: dg134170fnc21c prices

• $7400.00-$12499.04

specifications variablfrequen:

• brand: Eaton
• mpn: Dg1-34170fn-c21c
• part type: Hp
• power rating: 170 Amps
• enclosure: Type 1/ip21
• integrated keypad: Yes
• analog output s : 1 Output
• horsepower: 125.0
• phase converter: No
• input voltage s : 400 480 Vac Input
• rated load: 125 Hp
• motor current: 170.0 Amps
• output phase: Three Phase Output
• input voltage: 440-500
• series: Dg1 Series
• input phase s : Three Phase Input
• bypass: No Bypass
• 1 output: Relay
• current: 170.0
• output voltage: 480 Vac Output
• country of origin: China
• number of phases: 3-phase

general variablfrequen:

• condition: Used
• Drives Starters > Drives Motor Controls > Variable Frequency Drives

payments variablfrequen:

• credit card: Visa
• wallet: Paypal
• other

shipping variablfrequen:

seller variablfrequen:

• rating: 100.0%
• city: Pacific, Missouri
• # reviews: 228

offer variablfrequen:

• best offers: True
• sold: 0
• quantity: 1
• started: June 8, 2026
• options: Ship-to-home
• availability: In Stock

returns variablfrequen:

• policy: No Returns

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