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- 20G1G3C585LNDNNNNN
- PowerFlex AC Drive
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- 1,200 × 675 × 2,132 mm
- 861.8kg
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Allen-Bradley 20G1G3C585LNDNNNNN PowerFlex 755TL Low-Harmonic AC Drive
1. Product Overview
The 20G1G3C585LNDNNNNN is a high-power industrial AC variable frequency drive belonging to the PowerFlex 755TL series within the PowerFlex 755T platform.
It is designed for large three-phase AC motors used in demanding industrial applications where controlled speed, stable torque, high power capacity, and improved input power quality are important.
This model is configured for a 400 VAC three-phase supply and has a 585 A normal-duty rating. Its normal-duty motor-power rating is approximately 315 kW.
Depending on the application duty, the same drive class can support approximately 355 kW in light-duty operation, 315 kW in normal-duty operation, and 250 kW in heavy-duty operation.
The 20G1G3C585LNDNNNNN uses a low-harmonic active-front-end architecture, which makes it particularly suitable for large industrial facilities where the electrical distribution system needs better control of harmonic current generated by high-power variable-speed drives.
This is a large floor-standing cabinet drive rather than a compact panel-mounted inverter. The approximate drive dimensions are 1,200 mm wide × 675 mm deep × 2,132 mm high, while the approximate weight is 861.8 kg for the standard drive configuration.
Because of its size and power level, the product is aimed at applications such as large pumps, fans, conveyors, compressors, water systems, process machinery, material-handling equipment, mining equipment, and other large motor-driven systems.
2. Brand and Product Series
| Item | Details |
|---|---|
| Brand | Allen-Bradley |
| Product Platform | PowerFlex 755T |
| Product Series | PowerFlex 755TL |
| Product Type | Low-Harmonic AC Variable Frequency Drive |
| Model | 20G1G3C585LNDNNNNN |
| Application Class | High-Power Industrial Motor Control |
| Mounting Style | Floor Mounted |
| Frame | Frame 8 |
| Input Architecture | Low-Harmonic Active Front End |
| Control Architecture | TotalFORCE |
The PowerFlex 755TL series is intended for applications where a conventional compact VFD is not enough.
The series combines high-power motor control with a low-harmonic input architecture, making it particularly relevant to large industrial installations.
The 585 A model sits toward the upper end of the Frame 8 400 V range and provides a useful increase in current capacity compared with the 460 A and 540 A versions.
3. Main Product Parameters
| Parameter | Specification |
|---|---|
| Model | 20G1G3C585LNDNNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755TL |
| Platform | PowerFlex 755T |
| Drive Type | Low-Harmonic AC Drive |
| Input Voltage | 400 VAC |
| Input Phase | 3 Phase |
| Normal-Duty Current | 585 A |
| Normal-Duty Power | 315 kW |
| Light-Duty Current | 650 A class |
| Light-Duty Power | 355 kW |
| Heavy-Duty Current | 472 A class |
| Heavy-Duty Power | 250 kW |
| Input Technology | Low-Harmonic AFE |
| Cooling | Forced-Air / Air-Cooled |
| Frame | Frame 8 |
| Mounting | Floor Mount |
| Enclosure | Type 1 / IP21 class |
| EMI Protection | Standard EMI Protection |
| Control | TotalFORCE |
| Approx. Width | 1,200 mm |
| Approx. Depth | 675 mm |
| Approx. Height | 2,132 mm |
| Approx. Weight | 861.8 kg |
| Installation Type | Floor-Standing Cabinet |
| Typical Application | Large Industrial AC Motors |
4. Electrical Ratings
The 585 A rating is the key electrical characteristic of this model.
For the 400 V class, the drive provides approximately 585 A normal-duty output current and approximately 315 kW normal-duty motor power.
The applicable power rating changes according to the duty classification.
| Duty Classification | Approx. Current | Approx. Motor Power |
|---|---|---|
| Light Duty | 650 A | 355 kW |
| Normal Duty | 585 A | 315 kW |
| Heavy Duty | 472 A | 250 kW |
This distinction is important when selecting the drive for an actual motor.
A motor application with a relatively smooth load may be evaluated using the normal-duty or light-duty rating.
A machine with frequent acceleration, high starting torque, large load changes, or demanding overload conditions may need to be evaluated against the heavy-duty rating instead.
For that reason, selecting the drive based only on the motor’s nominal kW value is not recommended.
The motor nameplate current and the actual load profile are equally important.
5. Physical Dimensions and Weight
The physical size of the 20G1G3C585LNDNNNNN reflects its high-power industrial design.
| Mechanical Parameter | Specification |
|---|---|
| Width | 1,200 mm |
| Depth | 675 mm |
| Height | 2,132 mm |
| Approx. Weight | 861.8 kg |
| Mounting | Floor Mount |
| Frame | Frame 8 |
| Cooling | Forced Air |
| Enclosure | Type 1 / IP21 class |
The approximately 861.8 kg weight is an important installation consideration.
This drive is not a lightweight electronic module that can simply be carried into a control cabinet.
Transportation, lifting, positioning, floor loading, access routes, and service space should all be planned before delivery.
The overall height of approximately 2.132 meters should also be considered when checking doors, ceilings, lifting equipment, and installation areas.
The 1.2-meter cabinet width should be considered when designing electrical-room layouts and drive line-ups.
6. Product Introduction
The 20G1G3C585LNDNNNNN is designed for large industrial motors that require variable-speed control.
Instead of operating the motor continuously at one fixed speed, the drive adjusts the motor’s electrical operating conditions to provide controlled speed and torque.
This can make a significant difference in large industrial processes.
A pump may not need to operate at full speed all the time.
A fan may need to follow changing airflow demand.
A conveyor may require different operating speeds depending on production conditions.
A compressor may need to respond continuously to process demand.
A process machine may need controlled acceleration and deceleration to reduce mechanical stress.
The drive provides the electrical power conversion and control functions needed for these applications.
7. Low-Harmonic Active Front End
One of the most important features of the 20G1G3C585LNDNNNNN is its low-harmonic input architecture.
Large variable frequency drives can draw substantial current from an industrial power network.
If the input current waveform contains significant harmonic content, those harmonics can affect the overall electrical system.
This becomes increasingly important as the drive size increases.
The active-front-end design provides greater control of the input current waveform than a conventional basic rectifier arrangement.
For large industrial installations, this can help reduce the harmonic impact associated with high-power variable-speed drives.
This feature is especially useful where a facility contains several large VFDs, large transformers, generators, sensitive electrical equipment, or strict power-quality requirements.
8. Advanced Motor Control
The drive uses the TotalFORCE control architecture.
This provides a broad control platform for high-performance industrial motor applications.
Depending on the selected configuration, the drive can support advanced speed control, torque control, feedback functions, motor-control algorithms, diagnostics, and application-specific functions.
This is important when the motor is connected to machinery where simple speed adjustment is not enough.
For example, a conveyor may need controlled acceleration.
A large pump may require smooth speed changes.
A compressor may require stable operation under changing process conditions.
A high-inertia machine may require carefully controlled acceleration and deceleration.
The drive’s control capabilities provide flexibility for these types of requirements.
9. Major Product Advantages
9.1 High Power Capacity
The 585 A model is designed for large industrial motor applications.
Its approximately 315 kW normal-duty rating makes it suitable for substantial motor-driven equipment.
With approximately 355 kW light-duty capability, it can also accommodate applications where the load profile allows the light-duty rating to be used.
9.2 Low-Harmonic Operation
The low-harmonic active-front-end architecture is a major advantage for large electrical systems.
It is particularly useful where power quality needs to be considered alongside motor control.
Reducing the harmonic contribution of large drives can simplify the overall electrical design of a facility.
9.3 Large Motor Support
The 585 A rating allows the drive to control motors in a power range that is far beyond compact machine-level VFDs.
It is intended for large pumps, fans, conveyors, compressors, and process equipment.
9.4 Advanced Speed and Torque Control
The drive is not limited to simple frequency adjustment.
It provides an advanced control platform capable of supporting applications where motor speed and torque need to be managed accurately.
This can improve process stability and help reduce unnecessary mechanical stress.
9.5 Industrial Floor-Mounted Design
The floor-standing cabinet format is suitable for large electrical rooms and industrial equipment areas.
It provides space for high-power electrical components, cooling systems, control hardware, power connections, and maintenance access.
9.6 Broad Application Range
The same drive platform can be used in many industrial environments.
Typical applications include pumps, fans, conveyors, compressors, water systems, mining equipment, process machinery, and material-handling equipment.
9.7 Diagnostic Capability
High-power drives are often connected to critical production equipment.
A fault can therefore have a major effect on production.
The drive provides operating information, alarms, fault information, and diagnostic functions that can assist maintenance personnel in identifying abnormal operating conditions.
10. Product Applications
10.1 Large Pump Systems
Large pumps are one of the most common applications for high-power variable frequency drives.
The drive can adjust motor speed according to changing flow and pressure requirements.
This is useful in industrial water systems, wastewater facilities, cooling systems, water circulation systems, irrigation, and process-fluid applications.
Variable-speed control can also reduce the need to operate a pump continuously at maximum speed when the process does not require maximum flow.
10.2 Large Industrial Fans
Large ventilation fans and process blowers can use significant amounts of electrical power.
Variable-speed operation allows airflow to be adjusted according to process requirements.
The 585 A drive provides sufficient capacity for substantial fan motors while the low-harmonic architecture can help address the electrical-system impact of large VFD loads.
10.3 Conveyor Systems
Large conveyors are widely used in mining, manufacturing, material handling, bulk storage, and processing facilities.
The drive can provide controlled acceleration and deceleration.
This can reduce mechanical shock and allow the conveyor speed to be adjusted according to production requirements.
For large conveyors, correct drive sizing is particularly important because the required torque can change significantly depending on material loading and conveyor length.
10.4 Compressors
Large compressors can require high motor power and controlled acceleration.
A high-power variable frequency drive can provide adjustable operating speed and controlled motor starting.
The actual drive selection should take the compressor type, load profile, operating speed range, motor current, and required overload capability into account.
10.5 Mining Equipment
Mining operations often use very large electric motors.
Potential applications include conveyors, ventilation systems, pumps, crushers, and other material-handling equipment.
A high-power low-harmonic drive can be particularly useful where several large motors are connected to the same electrical distribution network.
10.6 Water and Wastewater
Large water and wastewater facilities frequently use substantial pump motors.
Variable-speed control can allow pump operation to follow system demand.
The 585 A drive is suited to large pumping equipment rather than small pumping applications.
10.7 Process Machinery
Many industrial processes use large rotating machines.
Examples include mixers, rollers, conveyors, fans, pumps, and other mechanical equipment.
The ability to control speed and torque can directly influence production stability.
11. Typical Industries
| Industry | Typical Application |
|---|---|
| Water Treatment | Large pumps |
| Wastewater | Pumping and process equipment |
| Mining | Conveyors, pumps and ventilation |
| Cement | Fans, conveyors and process machinery |
| Metals | Large process motors |
| Chemical Processing | Pumps and compressors |
| Manufacturing | Process machinery and conveyors |
| HVAC | Large fans and pumps |
| Utilities | Large pumps and auxiliary equipment |
| Infrastructure | Pumping and ventilation |
| Bulk Material Handling | Conveyors |
| General Process Industry | Pumps, fans, compressors and mixers |
12. Recommended Related Models in the Same Series
The following five models are closely related to the 20G1G3C585LNDNNNNN and provide different current and motor-power levels within the same general 400 V PowerFlex 755TL family.
| Model | Series | Voltage | Normal-Duty Current | Normal-Duty Power | Light-Duty Power | Heavy-Duty Power | Frame | Approx. Dimensions | Approx. Weight |
|---|---|---|---|---|---|---|---|---|---|
| 20G1G3C302LNDNNNNN | PowerFlex 755TL | 400 VAC | 302 A | 160 kW | 200 kW | 132 kW | Frame 8 | 1,200 × 675 × 2,132 mm | 861.8 kg |
| 20G1G3C367LNDNNNNN | PowerFlex 755TL | 400 VAC | 367 A | 200 kW | 250 kW | 160 kW | Frame 8 | 1,200 × 675 × 2,132 mm | 861.8 kg |
| 20G1G3C460LNDNNNNN | PowerFlex 755TL | 400 VAC | 460 A | 250 kW | 315 kW | 200 kW | Frame 8 | 1,200 × 675 × 2,132 mm | 861.8 kg |
| 20G1G3C540LNDNNNNN | PowerFlex 755TL | 400 VAC | 540 A | 315 kW | 315 kW | 250 kW | Frame 8 | 1,200 × 675 × 2,132 mm | 861.8 kg |
| 20G1G3C650LNDNNNNN | PowerFlex 755TL | 400 VAC | 650 A | 355 kW | 400 kW | 315 kW | Frame 8 | 1,200 × 675 × 2,132 mm | 861.8 kg |
The 540 A version is the closest lower-capacity comparison.
The 650 A model is the natural higher-capacity comparison.
The 302 A, 367 A, and 460 A versions provide progressively lower current and power options for applications that do not require the full 585 A capacity.
13. Related Model: 20G1G3C302LNDNNNNN
The 20G1G3C302LNDNNNNN is a lower-rated member of the same general family.
It has an approximate normal-duty rating of 302 A and approximately 160 kW normal-duty power.
Its light-duty rating reaches approximately 200 kW, while its heavy-duty rating is approximately 132 kW.
This model can be considered for large pumps, fans, conveyors, and process machinery where the motor power requirement is lower than the 585 A model.
14. Related Model: 20G1G3C367LNDNNNNN
The 20G1G3C367LNDNNNNN provides approximately 367 A normal-duty current and approximately 200 kW normal-duty power.
It is a useful intermediate option for applications that require more capacity than the 302 A model but do not require a 460 A or 585 A drive.
Typical applications include medium-to-large pumps, fans, conveyors, and process equipment.
15. Related Model: 20G1G3C460LNDNNNNN
The 20G1G3C460LNDNNNNN provides approximately 460 A normal-duty current and approximately 250 kW normal-duty power.
It is one of the most useful comparison models for the 585 A unit.
When the motor’s full-load current and application duty can be accommodated within the 460 A rating, the lower-rated drive may be sufficient.
If additional current capacity or a higher light-duty rating is required, the 540 A or 585 A models become more relevant.
16. Related Model: 20G1G3C540LNDNNNNN
The 20G1G3C540LNDNNNNN provides approximately 540 A normal-duty current and approximately 315 kW normal-duty power.
It sits immediately below the 585 A model in this group.
The difference between the 540 A and 585 A versions may be important when the motor current is close to the upper end of the 540 A rating.
For applications requiring additional current margin, the 585 A model provides a higher normal-duty current rating.
17. Related Model: 20G1G3C650LNDNNNNN
The 20G1G3C650LNDNNNNN provides approximately 650 A normal-duty current and approximately 355 kW normal-duty power.
It is the higher-capacity alternative in this group.
Its light-duty rating can reach approximately 400 kW, making it appropriate for larger motors and applications with higher light-duty requirements.
This model can be considered when the 585 A unit does not provide sufficient current capacity.
18. Five Popular Models from the Same Brand
The following models represent other widely used drive families from the same brand and cover smaller or different application ranges.
| Model | Product Series | Voltage Class | Current Class | Approx. Power Class | Typical Application | Approx. Dimensions | Approx. Weight |
|---|---|---|---|---|---|---|---|
| 25B-D024N114 | PowerFlex 525 | 400/480 VAC class | 24 A | Approx. 11–15 kW | Pumps, fans, conveyors, machine control | Approx. 180 × 100 × 200 mm | Approx. 3–4 kg |
| 25B-D017N114 | PowerFlex 525 | 400/480 VAC class | 17 A | Approx. 7.5–11 kW | General machinery, pumps and fans | Approx. 180 × 100 × 200 mm | Approx. 3 kg |
| 25B-D010N114 | PowerFlex 525 | 400/480 VAC class | 10 A | Approx. 4–5.5 kW | Small conveyors, fans and pumps | Approx. 180 × 100 × 200 mm | Approx. 2–3 kg |
| 25A-D017N114 | PowerFlex 523 | 400/480 VAC class | 17 A | Approx. 7.5–11 kW | General machine control | Approx. 180 × 100 × 200 mm | Approx. 2–3 kg |
| 20F1ANC030JA0NNNNN | PowerFlex 753 | 400/480 VAC class | 30 A class | Approx. 15–22 kW | Industrial machinery, pumps and conveyors | Approx. 300 × 200 × 250 mm class | Approx. 15–20 kg |
These products occupy very different positions in the overall drive portfolio.
The PowerFlex 523 and 525 are compact drives designed for considerably smaller motors.
The PowerFlex 753 is a more advanced industrial drive platform for medium-power applications.
The 20G1G3C585LNDNNNNN, by comparison, is a large cabinet-mounted drive intended for motors in the hundreds-of-kilowatts range.
19. PowerFlex 525 Comparison
The PowerFlex 525 family is intended for compact machine-level applications.
Its physical size and weight are dramatically smaller than the 20G1G3C585LNDNNNNN.
A compact drive in the 10–20 A range may weigh only a few kilograms, whereas the 585 A cabinet drive weighs approximately 861.8 kg.
This difference illustrates the very different application levels.
A compact 525-class drive can be suitable for a small conveyor, pump, fan, or machine motor.
The 585 A PowerFlex 755TL is intended for large industrial process equipment.
20. PowerFlex 523 Comparison
The PowerFlex 523 is another compact VFD family.
It is intended for straightforward machine applications where the motor power is relatively modest.
Its compact physical dimensions make it convenient for machine control panels.
The 20G1G3C585LNDNNNNN is fundamentally different.
It is a floor-standing industrial cabinet with high-power electrical equipment, forced-air cooling, and a power rating suitable for large motors.
21. PowerFlex 753 Comparison
The PowerFlex 753 family is designed for industrial motor-control applications and provides substantially more capability than compact machine-level drives.
It is suitable for pumps, fans, conveyors, and other industrial equipment.
However, the 20G1G3C585LNDNNNNN operates at a much higher power level.
The 585 A model is intended for major industrial motors and applications where low-harmonic input performance is an important consideration.
22. Application Selection Table
| Application | Approx. Motor Power | Suitable Drive Category |
|---|---|---|
| Small Fan | 1–5 kW | Compact VFD |
| Small Pump | 1–10 kW | Compact VFD |
| Machine Conveyor | 5–30 kW | Compact / Industrial VFD |
| Medium Pump | 15–75 kW | Industrial VFD |
| Large Pump | 100–315 kW | PowerFlex 755TL class |
| Large Fan | 100–315 kW | PowerFlex 755TL class |
| Large Conveyor | 100–315 kW | PowerFlex 755TL class |
| Large Compressor | 150–315 kW | High-Power Industrial VFD |
| Mining Conveyor | 200 kW and above | High-Power Industrial VFD |
| Large Process Machine | 200 kW and above | High-Power Industrial VFD |
23. Installation Considerations
The installation of a drive of this size requires careful planning.
The cabinet is approximately 1,200 mm wide, 675 mm deep, and 2,132 mm high.
Adequate space should therefore be provided around the equipment for power connections, control wiring, cooling airflow, inspection, maintenance, and safe working access.
The approximately 861.8 kg weight is also significant.
The equipment should be moved using an appropriate lifting and transportation method.
The floor structure should be suitable for the equipment load.
The route from the delivery point to the final installation location should be checked before the equipment arrives.
Door openings, ceiling clearance, turning areas, ramps, floor loading, and lifting access can all become important during installation.
24. Cooling and Ventilation
High-power electronic drives generate considerable heat.
The forced-air cooling system therefore plays an important role in reliable operation.
The surrounding electrical room should have adequate ventilation.
Airflow paths should not be blocked by other equipment, cables, storage materials, or building structures.
Dust and contamination should also be controlled.
A clean electrical environment can help maintain cooling performance and reduce unnecessary thermal stress on power electronics.
For large industrial facilities, room temperature and airflow should be considered during the original electrical-room design rather than after the drive has been installed.
25. Electrical Installation
The incoming power system should be matched to the drive’s electrical requirements.
The 20G1G3C585LNDNNNNN is intended for a 400 VAC three-phase system.
The upstream transformer, switchgear, protective equipment, disconnecting equipment, grounding system, and cables must be selected according to the actual installation.
The motor-side cable system should also be designed for the drive’s output current and installation environment.
Because this is a high-power variable-frequency drive, grounding and electromagnetic compatibility should receive particular attention.
26. Motor Selection
The motor should not be selected solely according to nominal kW.
The motor nameplate current is particularly important.
The following motor information should be reviewed:
| Motor Parameter | Importance |
|---|---|
| Rated Voltage | Must match the drive and motor system |
| Full-Load Current | Important for drive sizing |
| Rated Frequency | Important for operating range |
| Rated Power | Establishes basic capacity |
| Rated Speed | Important for application matching |
| Motor Type | Determines control requirements |
| Starting Torque | Important for acceleration |
| Overload Requirement | Determines duty selection |
| Operating Speed Range | Important for process performance |
| Load Profile | Determines actual drive demand |
For a motor near the 315 kW range, the actual full-load current should be compared with the drive rating.
The 585 A rating should be evaluated together with the motor’s overload requirements and the mechanical load.
27. Why Choose the 585 A Version?
The 585 A model is useful when the application requires more capacity than the 460 A or 540 A models provide.
It offers approximately 585 A normal-duty current and 315 kW normal-duty power.
It also provides approximately 650 A light-duty capacity, corresponding to approximately 355 kW light-duty power.
This makes it particularly useful when the motor is close to the upper range of the 540 A class or when the application requires additional current margin.
At the same time, it remains within the Frame 8 platform rather than moving to a substantially larger frame.
28. Maintenance Considerations
Maintenance of a high-power drive should include inspection of cooling systems, electrical connections, ventilation paths, and diagnostic information.
Cooling fans and airflow should be checked according to the maintenance schedule.
The cabinet should be kept clean and free from excessive dust or contamination.
Electrical connections should be inspected using the appropriate maintenance procedures.
Repeated faults should be investigated rather than simply reset.
Operating data and diagnostic information can help identify problems before they develop into a major production stoppage.
29. Advantages for Large Industrial Facilities
For a facility with several large motors, using a common high-power drive platform can simplify engineering and maintenance.
Maintenance personnel can become familiar with the same general control architecture.
Drive parameters and operating information can be standardized.
Spare-parts planning can also become easier when several machines use related drive technology.
The 755TL family is particularly suitable for facilities where large motor loads and electrical power-quality considerations are both important.
30. Key Advantages Summary
| Feature | Practical Advantage |
|---|---|
| 585 A Normal-Duty Rating | Supports high-power industrial motors |
| 315 kW Normal-Duty Power | Suitable for large motor applications |
| 355 kW Light-Duty Power | Provides additional capacity for suitable load profiles |
| 250 kW Heavy-Duty Power | Supports demanding duty applications |
| Low-Harmonic AFE | Helps control input harmonic current |
| 400 VAC Three-Phase | Suitable for industrial 400 V systems |
| Frame 8 | Large industrial drive platform |
| TotalFORCE Control | Advanced speed and torque regulation |
| Floor-Mounted Cabinet | Suitable for large electrical rooms |
| Forced-Air Cooling | Appropriate for high-power operation |
| Diagnostic Functions | Supports troubleshooting and maintenance |
| Wide Application Range | Pumps, fans, conveyors, compressors and process machinery |
| Multiple Current Ratings | Simplifies selection within the same family |
31. Complete Technical Data
| Category | Technical Information |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex 755T |
| Product Series | PowerFlex 755TL |
| Model | 20G1G3C585LNDNNNNN |
| Product Type | Low-Harmonic AC Drive |
| Input Voltage | 400 VAC |
| Input Phase | Three Phase |
| Normal-Duty Current | 585 A |
| Normal-Duty Power | 315 kW |
| Light-Duty Current | 650 A |
| Light-Duty Power | 355 kW |
| Heavy-Duty Current | 472 A |
| Heavy-Duty Power | 250 kW |
| Input Architecture | Low-Harmonic Active Front End |
| Cooling | Forced Air |
| Mounting | Floor Mount |
| Frame | 8 |
| Enclosure | Type 1 / IP21 class |
| EMI Protection | Standard |
| Control Architecture | TotalFORCE |
| Approx. Width | 1,200 mm |
| Approx. Depth | 675 mm |
| Approx. Height | 2,132 mm |
| Approx. Weight | 861.8 kg |
| Installation | Floor-Standing Industrial Cabinet |
| Main Applications | Large Pumps, Fans, Conveyors, Compressors, Process Machinery |
| Typical Environment | Indoor Industrial Electrical Area |
| Application Level | High-Power Industrial |
32. Product Selection Summary
The 20G1G3C585LNDNNNNN is best considered when a project requires a high-power 400 V AC drive with low-harmonic input characteristics.
The 585 A normal-duty rating makes it suitable for large motors where a lower-current drive may not provide enough capacity.
The approximately 315 kW normal-duty power rating is appropriate for a wide range of large industrial machinery.
For suitable light-duty applications, the drive can reach approximately 355 kW.
For heavy-duty applications, the relevant rating is approximately 250 kW.
The actual selection should always be based on the motor nameplate current, duty cycle, overload requirement, operating speed, mechanical load, and environmental conditions.
33. Final Product Description
The 20G1G3C585LNDNNNNN is a high-power PowerFlex 755TL low-harmonic AC drive designed for large industrial three-phase motors.
Its main electrical characteristics are a 400 VAC three-phase input, 585 A normal-duty current rating, and approximately 315 kW normal-duty motor power.
For different duty classifications, the drive provides approximately 355 kW light-duty capacity and 250 kW heavy-duty capacity.
The low-harmonic active-front-end design is one of the most important features of the product.
It makes this drive particularly relevant to large industrial facilities where high-power variable-speed motors operate on a common electrical distribution system and harmonic current needs to be carefully managed.
The drive uses a large Frame 8 floor-mounted cabinet.
Its approximate dimensions are 1,200 mm wide × 675 mm deep × 2,132 mm high, and its approximate weight is 861.8 kg.
Those dimensions and weight should be taken seriously during project planning.
The installation requires suitable floor support, transportation access, lifting equipment, ventilation, cable-routing space, and maintenance clearance.
From an application standpoint, the drive is well suited to large pumps, industrial fans, compressors, conveyors, water-treatment systems, mining equipment, material-handling equipment, and large process machinery.
Its advanced control architecture provides more than basic motor speed adjustment.
It can be used where controlled acceleration, stable speed, torque regulation, feedback, diagnostics, and integration with a larger industrial control system are required.
Within the same series, the 302 A, 367 A, 460 A, 540 A, and 650 A models provide useful alternatives for different motor-current requirements.
The lower-current versions can be used when the motor does not require the capacity of the 585 A unit, while the 650 A version provides additional capacity for larger motors.
For smaller applications, the PowerFlex 523 and PowerFlex 525 families provide compact alternatives, while the PowerFlex 753 family is suited to a different range of industrial motor-control applications.
The 20G1G3C585LNDNNNNN therefore occupies a high-power position within the product range and is particularly suitable when three factors come together: a large motor, the need for sophisticated variable-speed control, and the need to pay close attention to electrical power quality.
For an actual installation, the most important information to verify is the motor full-load current, motor voltage, required duty classification, overload characteristics, operating speed range, mechanical load profile, input electrical system, environmental conditions, cooling requirements, and exact catalog configuration.
The key planning figures for the requested model are:
| Key Item | Value |
|---|---|
| Model | 20G1G3C585LNDNNNNN |
| Series | PowerFlex 755TL |
| Input | 400 VAC, 3 Phase |
| Normal-Duty Current | 585 A |
| Normal-Duty Power | 315 kW |
| Light-Duty Power | 355 kW |
| Heavy-Duty Power | 250 kW |
| Frame | 8 |
| Approx. Dimensions | 1,200 × 675 × 2,132 mm |
| Approx. Weight | 861.8 kg |
| Input Technology | Low-Harmonic AFE |
| Cooling | Forced Air |
| Mounting | Floor Mount |
| Enclosure | Type 1 / IP21 class |
| Control | TotalFORCE |
In short, the 20G1G3C585LNDNNNNN is a large, high-capacity industrial variable frequency drive intended for demanding motor-control applications. Its combination of 585 A current capacity, approximately 315 kW normal-duty power, low-harmonic input architecture, advanced control, Frame 8 construction, and floor-mounted cabinet design makes it particularly appropriate for large industrial equipment where both motor performance and electrical-system performance matter.