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20G14TE395AN0NNNNN High-Power Variable Frequency Drive

Product Overview

The 20G14TE395AN0NNNNN is a high-power industrial variable frequency drive designed for controlling large three-phase AC motors in demanding industrial environments. It belongs to the PowerFlex 755 product range and is intended for applications where motor speed, acceleration, torque performance, and process control need to be adjusted according to actual operating requirements.

This drive is suitable for large motor-driven equipment such as pumps, fans, blowers, conveyors, compressors, mixers, and other industrial machinery. Its high current capacity makes it appropriate for applications where a compact low-power drive would not provide sufficient electrical or mechanical performance.

The model is configured for a high-power DC-input drive architecture with a precharge arrangement. The drive converts electrical energy from the DC bus into a controlled three-phase AC output for the connected motor. By changing the output frequency and voltage, the drive allows the motor speed to be adjusted according to production and process requirements.

The 20G14TE395AN0NNNNN is a substantial industrial drive and should be installed as part of a properly engineered electrical system. Cabinet dimensions, cooling capacity, cable routing, electrical protection, grounding, mechanical support, and service clearance are all important considerations.

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Brand and Product Series

The PowerFlex 755 series is intended for industrial applications where motor control forms an important part of a larger production, processing, material-handling, pumping, or automation system.

Compared with small general-purpose drives, high-power PowerFlex 755 units are designed for applications involving larger motors, higher currents, substantial mechanical loads, and more demanding installation requirements.

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Main Technical Parameters

*Dimensions and weight are configuration-dependent planning values. The final physical size and weight can vary according to the complete mechanical arrangement, installed options, mounting hardware, cabinet design, and final drive assembly.

For transportation, lifting, cabinet construction, replacement work, or structural planning, the exact mechanical dimensions and final weight should be verified against the actual equipment configuration.

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Output Capacity and Application Duty

The 20G14TE395AN0NNNNN belongs to a high-current drive class suitable for different application duty requirements.

Light-Duty applications generally involve variable-torque loads. Large centrifugal pumps and industrial fans are common examples.

Normal-Duty operation is suitable for many industrial processes where the motor operates under a relatively balanced load profile.

Heavy-Duty applications are associated with higher torque demands and more demanding mechanical conditions. Large conveyors, mixers, certain compressors, and process equipment may fall into this category depending on their operating characteristics.

The final drive selection should always consider actual motor current, torque requirements, acceleration time, load inertia, overload demand, and operating cycle.

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Product Introduction

The 20G14TE395AN0NNNNN is designed for industrial systems where fixed-speed motor operation does not provide sufficient flexibility.

In a traditional fixed-speed system, a motor generally operates directly from the electrical supply at a relatively fixed speed. Process adjustments may then rely on mechanical methods such as throttling valves, dampers, or other mechanical restrictions.

A variable frequency drive provides a different approach by allowing the motor speed to be adjusted electrically.

For example, a pump does not always need to operate at maximum speed. The required water flow may change throughout the production process.

A large fan may not always need to provide maximum airflow.

A conveyor may need different operating speeds for different production stages.

A mixer may require controlled speed changes according to the material being processed.

The drive allows the motor to operate more closely in line with the actual requirements of the process.

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DC Input with Precharge

A major characteristic of this model is its DC input with precharge configuration.

The drive receives electrical energy from a DC power system and uses its internal inverter section to generate controlled three-phase AC power for the motor.

The DC-link section stores and manages electrical energy before it is converted into a variable-frequency output.

The precharge arrangement is particularly important in high-power drive systems.

Large drives contain significant internal energy-storage components. When electrical power is applied, uncontrolled charging can create excessive inrush conditions.

A controlled precharge process helps manage the energization of the DC-link system before normal operation.

This type of architecture can be suitable for engineered common DC-bus systems and coordinated high-power motor-drive installations.

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Frame 8 High-Power Construction

The drive belongs to the Frame 8 high-power class.

This means that the product is intended for substantial industrial installations rather than small machine-level applications.

The physical installation should be planned carefully.

Important considerations include:

• Cabinet dimensions.
• Structural support.
• Floor loading.
• Cooling airflow.
• Power-cable routing.
• Control-cable separation.
• Electrical safety clearance.
• Grounding.
• Service access.
• Lifting arrangements.
• Maintenance space.

Because the unit is in the approximate 300–400 kg weight class, mechanical lifting equipment should normally be considered when handling the complete assembly.

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Dimensions and Weight

*The values above are intended for preliminary planning only. Final dimensions and weight may vary depending on the complete configuration.

For installation projects, the physical measurements should be confirmed before cabinet fabrication or equipment replacement.

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Main Product Applications

1. Large Industrial Pumps

Large industrial pumping systems are among the most suitable applications for a drive in this capacity range.

Pump systems frequently operate under changing flow and pressure requirements.

The drive can adjust motor speed according to process demand.

Typical applications include:

• Water-treatment systems.
• Wastewater-treatment facilities.
• Industrial process-water systems.
• Cooling-water circulation.
• Large circulation pumps.
• Irrigation systems.
• Chemical-process pumping.
• Industrial pumping stations.
• Cooling systems.

Controlled acceleration can also reduce sudden mechanical stress on pumps, motors, couplings, and pipe systems.

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2. Industrial Fans

Large industrial fans often operate under changing airflow requirements.

The drive can adjust the speed of the motor according to ventilation or process demand.

Typical applications include:

• Industrial ventilation.
• Dust-collection systems.
• Process exhaust.
• Furnace ventilation.
• Cooling systems.
• Mining ventilation.
• Large air-handling systems.
• Cement and material-processing systems.

Variable-speed operation can provide more flexible airflow control than continuously operating the motor at full speed.

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3. Industrial Blowers

Blowers can require adjustable motor speed to control airflow and pressure.

The drive can be used in applications involving:

• Process air.
• Aeration systems.
• Combustion air.
• Industrial ventilation.
• Material-processing systems.
• Air-supply equipment.

The final selection depends on the blower torque requirements and motor operating conditions.

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4. Large Conveyors

Large conveyor systems can have significant mechanical inertia.

Starting a large motor directly at full speed can create mechanical shock.

A variable frequency drive provides controlled acceleration and deceleration.

This can help reduce stress on:

• Conveyor belts.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Conveyor structures.
• Mechanical drive components.

For heavily loaded conveyors, the required duty rating and overload characteristics should be carefully considered.

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5. Compressors

Large industrial compressors can require significant motor capacity.

The drive allows the compressor motor speed to be adjusted according to operating demand.

Potential applications include industrial air systems and process-compression equipment.

The compressor design, torque profile, acceleration requirements, and operating cycle should all be considered during drive selection.

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6. Mixers and Agitators

Mixing systems may experience changing mechanical resistance.

The viscosity of the processed material can change during operation.

A variable frequency drive provides adjustable motor speed and controlled acceleration for suitable mixing and agitation systems.

The final selection should consider torque requirements carefully.

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7. Material-Handling Equipment

The drive can also be used for high-power material-handling applications.

Typical examples include:

• Bulk-material conveyors.
• Feed systems.
• Transfer systems.
• Processing equipment.
• Industrial transport machinery.
• Production-line equipment.

Controlled speed can help match material movement with the requirements of the overall production process.

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Main Product Advantages

1. High Output Capacity

The 395 A current class provides substantial capacity for large industrial motors.

This makes the drive suitable for applications that require approximately 350 HP to 450 HP depending on the duty classification and motor requirements.

The drive is therefore suitable for substantial industrial machinery rather than small equipment.

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2. Adjustable Motor Speed

One of the main advantages is the ability to control motor speed according to actual process requirements.

This can improve the control of:

• Flow.
• Pressure.
• Air volume.
• Conveyor speed.
• Production rate.
• Material movement.
• Process conditions.

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3. Controlled Acceleration

Large motors and mechanical systems can experience substantial stress during rapid starting.

Controlled acceleration allows the motor speed to increase gradually according to the programmed operating requirements.

This can help reduce mechanical shock on:

• Motors.
• Gearboxes.
• Couplings.
• Shafts.
• Belts.
• Pump systems.
• Conveyor systems.

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4. Suitable for High-Power Industrial Systems

The Frame 8 platform is suitable for large electrical installations.

The drive can form part of a major industrial motor-control system.

This makes it appropriate for facilities where large pumps, fans, conveyors, and process machinery operate continuously or under demanding production conditions.

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5. Flexible Duty Applications

The drive can be considered for Light-Duty, Normal-Duty, or Heavy-Duty applications according to the actual load requirements.

This provides flexibility across different types of industrial equipment.

A large fan and a heavily loaded conveyor may require different drive characteristics even when their motor horsepower ratings are similar.

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6. DC-Bus System Compatibility

The DC-input architecture makes this configuration suitable for engineered high-power DC-bus systems.

This can be useful in installations where multiple drive systems operate within a coordinated electrical architecture.

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7. Forced-Air Cooling

High-power electronic components generate considerable heat during operation.

The forced-air cooling arrangement is designed to manage the thermal requirements of the drive.

Correct cabinet airflow remains important for reliable operation.

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Five Recommended Same-Series or Related Models

The following models are closely related to the requested 20G14TE395AN0NNNNN and belong to the same or closely related high-power product configurations.

The 20G14TE295AN0NNNNN is suitable for applications requiring less output capacity.

The 20G14TE355AN0NNNNN is an appropriate option for industrial systems positioned below the 395 A class.

The 20G14TE395JN0NNNNN is closely related to the requested model and provides a similar capacity class with a different configuration suffix.

The 20G14TE435AN0NNNNN provides additional capacity for larger motors.

The 20G14TE460AN0NNNNN is suitable for applications requiring a significantly higher output-current class.

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Comparison of Related Models

The requested model occupies an important position within the high-power range.

It provides more capacity than the 295 A and 355 A versions while remaining below the largest versions in the same general product group.

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Five Popular Related Models from the Same Brand

The following models represent widely used or commonly selected products from the same brand and related industrial drive range.

These models cover a wide range of motor-control applications.

Smaller current-class models are suitable for general industrial machinery.

Larger high-current models are designed for substantial motor loads and demanding industrial installations.

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Comparison of Popular Related Models

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Application Selection Guide

The final model selection should always be based on actual operating conditions rather than motor horsepower alone.

Motor current, overload demand, acceleration time, mechanical inertia, and torque characteristics are particularly important.

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Installation Considerations

A high-power drive should be installed as part of a complete electrical system.

The drive should be installed in an environment that allows the cooling system to operate effectively.

Air passages should remain clear and the electrical enclosure should be designed to manage the heat generated by the complete drive system.

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Cooling and Thermal Management

High-power variable frequency drives generate significant heat.

The cooling arrangement must therefore be considered during cabinet design.

Important factors include:

• Ambient temperature.
• Air intake.
• Air exhaust.
• Internal cabinet temperature.
• Cooling fan operation.
• Air-filter condition.
• Dust accumulation.

Restricted airflow can increase internal temperatures and affect long-term equipment reliability.

Regular inspection of cooling components is therefore important.

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Grounding and Wiring Considerations

Proper grounding is essential in high-power drive systems.

The drive, motor, electrical enclosure, and associated equipment should be incorporated into a suitable grounding and bonding system.

Power cables and control cables should be routed separately where practical.

Good cable-routing practices can help reduce unwanted electrical interference.

Important considerations include:

• Power-cable routing.
• Motor-cable routing.
• Control-wire separation.
• Grounding continuity.
• Shielding where required.
• Electrical cabinet layout.

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Maintenance Considerations

Regular maintenance should focus on the electrical and cooling systems.

Typical inspection areas include:

• Cooling fans.
• Air passages.
• Air filters.
• Power terminals.
• Grounding connections.
• Motor cables.
• Cabinet temperature.
• Electrical connections.
• Fault history.

If repeated faults occur, the cause should be investigated carefully.

A drive fault can sometimes be related to the motor, mechanical load, electrical supply, cooling system, or cable installation rather than the drive itself.

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Product Advantages Summary

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Final Technical Summary

*The dimensions and weight are approximate planning-level values and may vary depending on the final mechanical configuration.

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Conclusion

The 20G14TE395AN0NNNNN is a high-power PowerFlex 755 industrial variable frequency drive designed for controlling large three-phase motors.

With a 395 A current class, the drive is suitable for motor applications in the approximate 350–450 HP range, depending on the selected duty requirements and operating conditions.

The DC-input architecture, high-power Frame 8 construction, forced-air cooling, and adjustable motor-control capability make the drive suitable for demanding industrial systems.

Its most suitable applications include large pumps, industrial fans, blowers, conveyors, compressors, mixers, material-handling equipment, and other high-power process machinery.

The main advantages include adjustable speed, controlled acceleration, flexible application capability, high output capacity, and suitability for large industrial motor systems.

For mechanical planning, the unit should be treated as a substantial electrical component with approximate planning dimensions in the 600–800 mm × 600–800 mm × 2,000–2,500 mm class and an approximate weight of 300–400 kg, subject to the final configuration.