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Allen-Bradley 20G1F3C1K2LNDNNNNN PowerFlex 755T AC Drive

1. Product Overview

The Allen-Bradley 20G1F3C1K2LNDNNNNN is a high-power PowerFlex 755T AC drive designed for large industrial motor-control systems where high current capacity, stable variable-speed operation, controlled acceleration, and integration with plant automation are required.

This model is part of the large-frame PowerFlex 755T drive family and uses a 400 V AC, three-phase electrical configuration.

The 1K2 rating code corresponds to 1,175 A and 710 kW at 400 V, 50 Hz under the standard-duty rating structure, placing this model in the high-power Frame 9 class.

The unit is an air-cooled packaged drive intended for floor-mounted industrial installations. Its physical size and weight are considerably greater than those of conventional wall-mounted or compact cabinet drives, so the installation normally requires dedicated floor space, appropriate lifting equipment, adequate ventilation, and carefully planned cable routing.

The 20G1F3C1K2LNDNNNNN is particularly suitable for large motors used in conveyors, pumps, fans, compressors, mining equipment, material-handling systems, process machinery, and other high-capacity industrial equipment.

The model is best regarded as a complete high-power motor-control platform rather than simply a compact variable-frequency drive.

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2. Brand and Product Series

Item	Specification
Model	20G1F3C1K2LNDNNNNN
Brand	Allen-Bradley
Series	PowerFlex 755T
Product Family	PowerFlex 750-Series with TotalFORCE Control
Product Type	Air-Cooled 755 AC Packaged Drive
Drive Type	High-Power AC Variable-Frequency Drive
Voltage Class	400 V AC
Phase	3 Phase
Standard Frequency Class	50 Hz input rating structure
Normal Duty Current	1,175 A
Normal Duty Power	710 kW
Frame	Frame 9
Cooling	Air Cooled / Forced Air
Installation	Floor Mount
Application Class	Large Industrial Motor Control

The model number identifies a large Frame 9 configuration within the PowerFlex 755T family.

The 1K2 portion is especially important because it identifies the high-power rating class. For the 400 V, 50 Hz standard-duty rating table, 1K2 corresponds to 1,175 A and 710 kW.

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3. Main Technical Parameters

Parameter	Specification
Model	20G1F3C1K2LNDNNNNN
Brand	Allen-Bradley
Series	PowerFlex 755T
Product Type	Air-Cooled 755 AC Packaged Drive
Input Voltage	400 V AC
Input Phase	3 Phase
Frequency Class	50 Hz
Normal Duty Current	1,175 A
Normal Duty Power	710 kW
Frame Size	Frame 9
Cooling Method	Air Cooled
Installation	Floor Mounted
Drive Architecture	High-Power PowerFlex 755T
Motor Application	Large AC motor control
Control Platform	TotalFORCE control architecture
Enclosure / Mounting	Large industrial floor-mounted configuration
Communication	Configuration dependent
Feedback	Configuration dependent
Safety Functions	Configuration dependent
Dynamic Braking	Configuration dependent
EMI / Filtering	Configuration dependent
Approx. Height	2,453 mm class
Approx. Width	Approximately 600 mm for a basic Frame 9 drive cabinet
Approx. Depth	Approximately 600–800 mm depending on cabinet configuration
Approx. Basic Cabinet Weight	Approximately 1,246 kg
Complete Packaged-System Weight	Configuration dependent
Cooling Airflow	Required for continuous high-power operation
Installation Environment	Dedicated industrial electrical room / equipment area

The electrical rating is the most important selection parameter.

At 1,175 A and 710 kW, this drive is intended for substantially larger motor systems than the typical Frame 6 or Frame 7 drive.

The actual allowable motor rating must still be checked against the motor nameplate current, duty cycle, application load profile, ambient temperature, altitude, and other installation conditions.

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4. Electrical Rating

The 20G1F3C1K2LNDNNNNN has a 400 V AC, three-phase input configuration.

Its standard-duty rating is 1,175 A / 710 kW within the 400 V, 50 Hz PowerFlex 755T rating structure.

This current level places the drive firmly into the high-power industrial category.

At this scale, the drive is normally integrated into a dedicated electrical installation rather than mounted inside a conventional small control cabinet.

The high-current rating allows the drive to supply large industrial motors while providing variable-frequency control.

The drive can be used where the motor needs to operate at different speeds according to process requirements.

This is particularly useful for large pumps, fans, conveyors, compressors, processing machines, and other equipment whose operating conditions vary during production.

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5. 1K2 Rating Explanation

The 1K2 rating code is one of the most important identifiers in the catalog number.

Within the 400 V, 50 Hz PowerFlex 755T standard-duty rating table, the progression around this range is:

Rating Code	Current	Power	Frame
920	920 A	500 kW	Frame 9
1K0	1,040 A	560 kW	Frame 9
1K1	1,112 A	630 kW	Frame 9
1K2	1,175 A	710 kW	Frame 9
1K4	1,463 A	800 kW	Frame 9

This places the 20G1F3C1K2LNDNNNNN above the 1K1 class and below the 1K4 class in the same high-power 400 V rating structure.

This makes it useful for projects where a 630 kW class drive is not sufficient, but the next larger 800 kW class is unnecessary or would provide excessive capacity.

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6. Mechanical Parameters

The 20G1F3C1K2LNDNNNNN belongs to the large Frame 9 mechanical class.

A basic Frame 9 drive cabinet is approximately 2,453 mm high.

A basic cabinet arrangement can be approximately 600 mm wide, while the depth can be approximately 600–800 mm, depending on the selected cabinet arrangement and associated equipment.

A useful engineering planning value for the basic Frame 9 drive cabinet is approximately 1,246 kg.

Mechanical Parameter	Approximate Specification
Model	20G1F3C1K2LNDNNNNN
Frame	Frame 9
Height	Approx. 2,453 mm
Width	Approx. 600 mm basic cabinet
Depth	Approx. 600–800 mm
Basic Cabinet Weight	Approx. 1,246 kg
Complete System Weight	Configuration dependent
Mounting	Floor Mount
Cooling	Air Cooled
Service Access	Front/service clearance required
Floor Loading	Must be checked for actual installation
Transport	Heavy-equipment handling required

These dimensions and weight values should be treated as planning values rather than guaranteed shipping dimensions.

A complete packaged system can be significantly wider and heavier when additional input sections, control sections, wiring compartments, option cabinets, protection equipment, or other assemblies are included.

For a new installation, the final mechanical drawing and shipping information for the actual configured drive should be used for transportation and foundation planning.

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7. Product Introduction

The 20G1F3C1K2LNDNNNNN is designed for applications in which a large AC motor must operate under controlled speed and torque conditions.

Traditional fixed-speed motor operation is often adequate for simple machinery, but many modern industrial processes require the motor speed to change according to production demand.

A variable-frequency drive provides that flexibility.

For example, a large pump may need to operate at different speeds as process pressure changes.

A conveyor may require controlled acceleration to prevent belt shock and product movement.

A large fan may need reduced speed during periods of lower airflow demand.

A compressor may need controlled speed to maintain a process condition.

In each of these cases, the drive becomes part of the process-control system rather than simply acting as an electrical starter.

The PowerFlex 755T architecture is designed for this type of industrial application.

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8. TotalFORCE Control Platform

The PowerFlex 755T family is built around a TotalFORCE control architecture.

For a large industrial drive, control performance is important because the motor may be connected to a machine with substantial inertia or a process that reacts quickly to changes in speed and torque.

The control system can be configured for different motor-control requirements depending on the motor, application, feedback arrangement, and selected options.

This allows the drive to be applied to a broad range of industrial machinery.

The control architecture can also support integration into larger automation systems.

Depending on the final configuration, communication modules, feedback interfaces, safety options, and other accessories can be incorporated into the overall drive system.

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9. Typical Applications

9.1 Large Conveyor Systems

The 20G1F3C1K2LNDNNNNN is suitable for consideration in very large conveyor systems.

Conveyors in mining, ports, cement plants, steel facilities, and bulk-material handling operations can involve very high motor power.

Starting a heavily loaded conveyor directly can create substantial mechanical and electrical stress.

Variable-frequency control allows the motor to accelerate according to a controlled ramp.

This can help the complete conveyor system reach operating speed more smoothly.

Speed control can also allow production throughput to be adjusted according to the process.

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9.2 Mining Equipment

Mining is one of the industries where high-power drive systems are frequently required.

Large motors can be used for:

• Long-distance conveyors.
• Crushers.
• Large pumps.
• Ventilation systems.
• Material handling.
• Processing machinery.
• Grinding-related equipment.
• Auxiliary production equipment.

In mining applications, the installation environment should receive particular attention.

Dust, temperature, altitude, vibration, and maintenance accessibility can all affect drive performance.

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9.3 Large Pumping Systems

Large pumping systems can benefit from variable-speed control because the required flow is often not constant.

Instead of operating a large pump continuously at full speed, the drive can adjust motor speed according to the process requirement.

Potential applications include:

• Water treatment.
• Cooling-water systems.
• Industrial water circulation.
• Process pumping.
• Slurry pumping.
• Wastewater systems.
• Large infrastructure pumping.

The motor and pump combination must be evaluated together because pump torque characteristics vary with speed.

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9.4 Large Fans and Blowers

Industrial fans and blowers can consume considerable electrical power.

Typical applications include:

• Furnace ventilation.
• Combustion air.
• Exhaust systems.
• Dust extraction.
• Process cooling.
• Industrial ventilation.
• Large air-handling systems.

Variable-speed operation allows airflow to be adjusted according to actual demand.

This can provide greater process flexibility than fixed-speed operation.

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9.5 Compressors

Large compressors can require high motor power and carefully controlled acceleration.

The 20G1F3C1K2LNDNNNNN can be considered for large compressor systems where the compressor design and process allow variable-frequency motor operation.

The final selection should take into account:

• Compressor type.
• Starting torque.
• Minimum operating speed.
• Maximum operating speed.
• Acceleration time.
• Process pressure.
• Motor current.
• Load profile.
• Regenerative conditions.

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9.6 Cement and Mineral Processing

Large industrial equipment in cement and mineral-processing plants often requires high-power motors.

Typical applications include:

• Crushers.
• Large fans.
• Conveyors.
• Mills.
• Feed systems.
• Material handling.
• Dust extraction.
• Pumps.

The 710 kW class makes this drive relevant to large process equipment where controlled motor speed is required.

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9.7 Steel and Metals Processing

Steel and metals facilities often operate large motors continuously.

Applications may include:

• Material handling.
• Large cooling fans.
• Pumps.
• Conveyors.
• Process machinery.
• Auxiliary rolling equipment.

The drive can provide controlled acceleration, variable speed, and integration with the plant’s automation architecture.

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10. Main Product Advantages

10.1 Very High Current Capacity

The 1,175 A rating gives the 20G1F3C1K2LNDNNNNN the current capacity needed for large industrial motor applications.

This makes it appropriate for installations where smaller drives cannot provide sufficient continuous current.

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10.2 710 kW Normal-Duty Rating Class

The 710 kW standard-duty rating places this model in a high-capacity industrial category.

It can therefore serve large motors used in heavy process machinery and large material-handling equipment.

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10.3 Large Frame 9 Architecture

The Frame 9 structure provides the physical space necessary for high-current electrical equipment.

High-power drives require more substantial cooling, power distribution, bus structures, and mechanical construction than compact drives.

The large-frame design addresses these requirements.

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10.4 Controlled Motor Acceleration

Large machines can have substantial inertia.

If the motor is started too aggressively, mechanical components can experience unnecessary stress.

A properly configured variable-frequency drive can provide controlled acceleration and deceleration.

This is useful for conveyors, fans, pumps, compressors, and other large rotating machines.

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10.5 Variable-Speed Process Control

The ability to adjust motor speed according to process requirements is one of the major reasons to use a high-power AC drive.

The motor can operate at a speed appropriate to the process instead of being restricted to one fixed operating point.

This can improve process flexibility and may reduce unnecessary energy consumption in suitable variable-torque applications.

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10.6 Industrial Automation Integration

The PowerFlex 755T platform is intended to operate within larger automation systems.

Depending on the final configuration, communication, feedback, safety, and other control options can be incorporated.

This makes the drive suitable for complex production systems where the motor controller must exchange operating data with other automation equipment.

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10.7 Suitable for Centralized Drive Installations

At this power level, centralized installation is often practical.

A large Frame 9 drive can be installed in a dedicated electrical room or drive lineup.

This can simplify plant-level service access and provide a clearly defined location for high-power electrical equipment.

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11. Installation Requirements

Because the 20G1F3C1K2LNDNNNNN is a large Frame 9 drive, mechanical and electrical installation should be planned before delivery.

The floor must be capable of supporting equipment with a basic cabinet weight of approximately 1.2 tonnes.

The transportation route should also be checked.

This includes:

• Door dimensions.
• Elevator capacity.
• Floor loading.
• Turning radius.
• Crane or lifting-equipment access.
• Installation clearances.
• Final equipment positioning.

Adequate ventilation is equally important.

An air-cooled high-power drive produces considerable heat during operation.

The electrical room therefore needs a suitable thermal-management strategy.

The cooling airflow path must not be obstructed.

The drive should not be installed in a location where dust, moisture, corrosive gases, or other environmental contaminants can accumulate beyond the limits allowed by the final enclosure and installation configuration.

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12. Cable and Electrical Planning

At a rated current of 1,175 A, the power-cable installation is a major engineering consideration.

Conductor size, cable quantity, terminal arrangement, cable routing, grounding, short-circuit protection, and thermal conditions must all be evaluated.

The motor cable installation should also be designed to meet the requirements of the drive and motor system.

Long motor cables can introduce additional electrical considerations.

The complete installation should take into account:

• Input power distribution.
• Motor current.
• Short-circuit current.
• Protective devices.
• Grounding.
• Motor cable length.
• Cable shielding where applicable.
• EMC requirements.
• Harmonic requirements.
• Electrical clearances.
• Service isolation.
• Safety requirements.

The final installation should always follow the applicable engineering and electrical codes for the installation location.

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13. Maintenance Considerations

A large high-power drive should be incorporated into a preventive-maintenance program.

Cooling fans should be inspected periodically.

Air passages should be kept clean.

Dust accumulation can reduce cooling performance and increase operating temperatures.

Electrical connections should be inspected according to the applicable maintenance procedure.

Control wiring should be checked for loose terminals, damaged insulation, and signs of overheating.

The equipment should also be checked for abnormal noise, unusual vibration, excessive temperature, and contamination.

Maintenance intervals should be adapted to the environment.

A clean electrical room generally requires less frequent cleaning than a mining, cement, steel, or other dusty industrial environment.

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14. Engineering Selection Checklist

Selection Parameter	Requirement
Model	20G1F3C1K2LNDNNNNN
Input Voltage	Confirm 400 V AC
Input Phase	Confirm 3 Phase
Input Frequency	Confirm applicable 50 Hz system
Drive Current	1,175 A standard-duty class
Drive Power	710 kW standard-duty class
Motor Rated Voltage	Verify motor nameplate
Motor Rated Current	Must be within applicable drive duty
Motor Power	Verify against actual motor
Load Type	Constant torque / variable torque / application specific
Starting Torque	Check application requirement
Acceleration Time	Check machine requirement
Deceleration Time	Check machine requirement
Motor Inertia	Calculate or obtain from machine supplier
Regenerative Energy	Evaluate where applicable
Cooling	Confirm adequate airflow
Ambient Temperature	Confirm application limits
Altitude	Confirm derating requirements if applicable
Cabinet Space	Verify complete mechanical configuration
Floor Loading	Verify actual equipment weight
Communications	Select required network architecture
Feedback	Confirm encoder/feedback requirements
Safety	Confirm required safety functions
Maintenance Access	Provide appropriate service clearance

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15. Dimensions and Weight

The dimensions and weight of a large Frame 9 PowerFlex installation depend on the final configuration.

For general equipment-room planning, the following values are useful.

Mechanical Specification	Approximate Value
Model	20G1F3C1K2LNDNNNNN
Frame	Frame 9
Height	Approx. 2,453 mm
Width	Approx. 600 mm basic drive cabinet
Depth	Approx. 600–800 mm
Basic Drive Cabinet Weight	Approx. 1,246 kg
Complete Packaged Drive Weight	Configuration dependent
Installation	Floor Mount
Cooling	Air Cooled
Cabinet Expansion	Additional sections can increase width
Option Equipment	Can increase total weight
Shipping Arrangement	Verify actual configured equipment

The approximately 1,246 kg figure should be considered a basic Frame 9 cabinet planning value.

It should not be used as the guaranteed shipping weight for every configured 20G1F3C1K2LNDNNNNN package.

A complete packaged system can include additional cabinets or equipment, resulting in a substantially larger overall footprint and total weight.

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16. Recommended Same-Series or Closely Related Models

The following models are useful comparison models around the same PowerFlex 755T high-power family.

Model	Series	Voltage	Normal-Duty Current	Normal-Duty Power	Frame	Cooling	Approx. Dimensions	Approx. Weight
20G1F3C920LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	920 A	500 kW	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K0LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,040 A	560 kW	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K1LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,112 A	630 kW	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K4LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,463 A	800 kW	Frame 9	Air Cooled	Approx. 2,453 × 600–800 × 600–800 mm	Approx. 1,200–1,500 kg
20G1F3C2K8LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	2,849 A	1,650 kW	Frame 11	Air Cooled	Configuration dependent	Configuration dependent

The models surrounding the 1K2 rating provide a useful range for motor-sizing comparisons.

The 920, 1K0, 1K1, 1K2 and 1K4 configurations form a particularly useful progression for large 400 V applications.

The 1K2 model provides a 710 kW class between the 630 kW 1K1 configuration and the 800 kW 1K4 configuration.

The 2K8 configuration moves into a substantially larger Frame 11 power class and should not be considered a simple physical replacement for the Frame 9 models.

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17. Five Related Allen-Bradley Models

The following models provide additional comparison points across the broader high-power drive range.

Model	Series	Voltage Class	Rating Class	Frame	Cooling	Approx. Dimensions	Approx. Weight
20G1F3C920LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	920 A / 500 kW ND	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K0LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,040 A / 560 kW ND	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K1LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,112 A / 630 kW ND	Frame 9	Air Cooled	Approx. 2,453 × 600 × 600–800 mm	Approx. 1,200–1,300 kg
20G1F3C1K4LNDNNNNN	PowerFlex 755T	400 V AC, 3 PH	1,463 A / 800 kW ND	Frame 9	Air Cooled	Approx. 2,453 × 600–800 × 600–800 mm	Approx. 1,200–1,500 kg
20G1F3D1K1LNDNNNNN	PowerFlex 755T	480 V AC class	High-power 1K1 class	Frame 9	Air Cooled	Configuration dependent	Configuration dependent

The models in this table are intended as comparison products rather than guaranteed direct replacements.

A replacement decision must consider voltage, current, motor power, duty cycle, cabinet arrangement, cooling, control architecture, communications, and installation dimensions.

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18. Comparison With the 20G1F3C1K1LNDNNNNN

The 20G1F3C1K1LNDNNNNN and 20G1F3C1K2LNDNNNNN are closely related high-power configurations.

Parameter	20G1F3C1K1LNDNNNNN	20G1F3C1K2LNDNNNNN
Model	20G1F3C1K1LNDNNNNN	20G1F3C1K2LNDNNNNN
Voltage	400 V AC	400 V AC
Phase	3 Phase	3 Phase
Normal-Duty Current	1,112 A	1,175 A
Normal-Duty Power	630 kW	710 kW
Frame	Frame 9	Frame 9
Cooling	Air Cooled	Air Cooled
Mounting	Floor Mount	Floor Mount
Approx. Height	2,453 mm	2,453 mm
Approx. Width	600 mm basic cabinet	600 mm basic cabinet
Approx. Depth	600–800 mm	600–800 mm
Approx. Weight	Approx. 1,246 kg class	Approx. 1,246 kg class

The main difference between the two configurations is the electrical rating.

The 1K2 configuration increases the normal-duty current from approximately 1,112 A to 1,175 A, while the standard-duty power rating increases from approximately 630 kW to 710 kW.

Both remain within the large Frame 9 mechanical class.

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19. Advantages for Heavy Industrial Equipment

For heavy industrial equipment, the 20G1F3C1K2LNDNNNNN provides a combination of high current capacity and variable-speed motor control.

This is particularly useful when the machine needs controlled acceleration rather than direct-on-line starting.

Large rotating equipment can contain considerable mechanical inertia.

A controlled acceleration profile allows the motor speed to increase gradually.

The same principle applies during deceleration.

For process equipment, speed regulation can also be linked to production demand.

A pump can follow flow requirements.

A fan can follow airflow requirements.

A conveyor can follow material throughput.

A compressor can follow process demand.

This flexibility is one of the main reasons high-power variable-frequency drives are used in modern industrial plants.

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20. Energy and Process Considerations

Energy performance depends strongly on the type of mechanical load.

Variable-torque loads such as many centrifugal pumps and fans can benefit significantly from variable-speed operation because the required power can decrease rapidly as speed is reduced.

Constant-torque machinery behaves differently.

Conveyors, crushers, and certain process machines can require substantial torque over a wide operating range.

For these applications, the primary benefit may be controlled operation, production flexibility, starting performance, and mechanical protection rather than simple energy reduction.

The actual energy result should therefore be calculated from the motor, load profile, operating schedule, and process requirements.

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21. Recommended Application Areas

The 20G1F3C1K2LNDNNNNN is particularly relevant to:

• Large mining conveyors.
• Bulk material handling.
• Large process pumps.
• Water infrastructure.
• Wastewater systems.
• Industrial fans.
• Large blowers.
• Heavy-duty compressors.
• Cement-processing equipment.
• Mineral-processing machinery.
• Steel-processing equipment.
• Large production conveyors.
• Industrial cooling systems.
• Process ventilation.
• Large auxiliary machinery.
• High-capacity manufacturing equipment.

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22. Practical Procurement and Replacement Notes

When purchasing or replacing this model, the complete catalog number should be checked carefully.

A similar-looking model can have a different voltage, current rating, input architecture, enclosure arrangement, control configuration, or option set.

The following information should be recorded from the existing equipment:

1. Complete catalog number.
2. Nameplate current.
3. Input voltage.
4. Motor voltage.
5. Motor rated current.
6. Motor power.
7. Motor frequency.
8. Frame size.
9. Enclosure arrangement.
10. Communication modules.
11. Feedback devices.
12. Safety options.
13. Braking arrangement.
14. Input protection.
15. Existing cabinet dimensions.
16. Existing cable arrangement.

For a large Frame 9 replacement, mechanical compatibility is just as important as electrical compatibility.

The replacement unit must fit the available floor space and must be compatible with the existing cable, bus, control, ventilation, and maintenance arrangements.

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23. Product Specification Summary

Category	Specification
Model	20G1F3C1K2LNDNNNNN
Brand	Allen-Bradley
Series	PowerFlex 755T
Product Type	Air-Cooled 755 AC Packaged Drive
Voltage	400 V AC
Phase	3 Phase
Frequency Class	50 Hz
Normal-Duty Current	1,175 A
Normal-Duty Power	710 kW
Frame	Frame 9
Cooling	Air Cooled
Mounting	Floor Mount
Control Platform	TotalFORCE
Typical Application	High-power industrial AC motor control
Typical Loads	Pumps, fans, conveyors, compressors, mining and process machinery
Approx. Height	2,453 mm
Approx. Width	600 mm basic cabinet
Approx. Depth	600–800 mm
Approx. Basic Weight	1,246 kg
Complete System Weight	Configuration dependent
Installation	Dedicated industrial electrical installation
Maintenance	Preventive inspection and cooling-system maintenance recommended

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24. Final Product Description

The Allen-Bradley 20G1F3C1K2LNDNNNNN PowerFlex 755T AC Drive is a high-capacity, air-cooled, floor-mounted industrial drive designed for large three-phase AC motors.

Its 400 V AC, 1,175 A and 710 kW standard-duty rating places it within the high-power Frame 9 range of the PowerFlex 755T family.

The drive is intended for demanding industrial applications where large motors must be operated with controlled speed, acceleration, deceleration, and process coordination.

Its application range includes large conveyors, mining machinery, pumps, fans, compressors, cement equipment, steel-processing machinery, material-handling systems, and other high-capacity process equipment.

The Frame 9 construction provides the physical platform required for this level of electrical power.

The approximate mechanical envelope of 2,453 mm high × 600 mm wide × 600–800 mm deep and an approximate basic cabinet weight of 1,246 kg should be used for preliminary planning only.

The final physical dimensions and shipping weight can increase when additional cabinet sections, option equipment, input equipment, control sections, and other packaged assemblies are included.

From an engineering perspective, the main strength of the 20G1F3C1K2LNDNNNNN is the combination of high current capacity, 710 kW-class motor capability, large Frame 9 construction, air-cooled industrial design, and PowerFlex 755T control architecture.

For applications that require a large motor to operate continuously and reliably while following changing process conditions, this type of drive provides a substantially more flexible solution than fixed-speed motor starting.

The 1K2 rating also occupies a useful position within the 400 V high-power range, sitting above the 1K1 / 630 kW class and below the 1K4 / 800 kW class.

This makes the model particularly relevant when the application requires a substantial increase in motor capacity but does not require the next larger 800 kW rating class.

For any actual replacement, retrofit, or new installation, the motor nameplate, drive nameplate, duty cycle, electrical supply, cabinet configuration, cooling conditions, communication requirements, and mechanical installation dimensions should all be checked together.

The 20G1F3C1K2LNDNNNNN is therefore best described as a large-frame, 400 V, 1,175 A, 710 kW-class PowerFlex 755T AC drive for high-power industrial motor-control applications, with the physical scale and electrical capacity expected from a Frame 9 industrial drive.