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Allen-Bradley 20G1G4C1K1JNANNNNN — PowerFlex 755TL Low-Harmonic AC Drive

1. Product Overview

The Allen-Bradley 20G1G4C1K1JNANNNNN is a high-power, air-cooled AC drive belonging to the PowerFlex 755T drive family and the PowerFlex 755TL low-harmonic drive series. It is designed for demanding industrial motor-control applications where high installed power, controlled motor speed, reduced harmonic impact, and reliable integration with an industrial automation system are important considerations.

The unit is a 400 VAC, three-phase, floor-mounted drive with a Type 12/IP54 enclosure, Frame 9 construction, auxiliary EMI protection, no integral HIM, and TotalFORCE control. Its published duty ratings are 710 kW LD at 1182 A, 630 kW ND at 1112 A, and 500 kW HD at 1040 A.

This combination makes the 20G1G4C1K1JNANNNNN particularly suitable for large industrial motors used in pumps, fans, compressors, conveyors, crushers, mills, process equipment, material-handling systems, and other continuously operating machinery where conventional low-power drives are not sufficient.

The model is supplied as an air-cooled 755 AC packaged drive, so it is intended for larger installations where the drive is normally installed as part of an electrical room, motor-control area, equipment room, or dedicated industrial drive cabinet arrangement.

2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755T
Drive Sub-Series	PowerFlex 755TL
Product Type	Air-Cooled Low-Harmonic AC Drive
Model	20G1G4C1K1JNANNNNN
Mounting	Floor Mount
Enclosure	Type 12 / IP54
Frame	Frame 9
Input	400 VAC Class, 3 Phase
Cooling	Air Cooled
Control	TotalFORCE Control
HIM	No HIM
EMI Protection	Auxiliary EMI Protection
Application Class	Industrial Variable-Frequency Drive
Primary Function	Large-Motor Variable-Speed Control

The PowerFlex 755TL designation identifies this configuration as part of the low-harmonic PowerFlex 755T range. The catalog description specifically identifies the unit as an air-cooled, low-harmonic drive with Type 12/IP54 floor-mounted construction.

3. Main Technical Parameters

Parameter	Specification
Model	20G1G4C1K1JNANNNNN
Brand	Allen-Bradley
Series	PowerFlex 755T
Sub-Series	PowerFlex 755TL
Drive Type	Air-Cooled Low-Harmonic AC Drive
Input Voltage	400 VAC Class
Input Voltage Range	Approximately 380–480 VAC
Input Phase	3 Phase
Output Phase	3 Phase
Line Frequency	50/60 Hz
LD Rating	710 kW / 1182 A
ND Rating	630 kW / 1112 A
HD Rating	500 kW / 1040 A
Enclosure	Type 12 / IP54
Mounting	Floor Mount
Frame Size	Frame 9
Cooling Method	Air Cooled
Harmonic Performance	Low-Harmonic Drive Architecture
EMI Protection	Auxiliary EMI Protection
Human Interface Module	No HIM
Drive Control	TotalFORCE Control
Ethernet Communication	EtherNet/IP capable
RS-485 Communication	Supported through applicable interface/configuration
Motor Control	V/Hz, vector-based control and other supported motor-control modes
Maximum Output Frequency	Up to approximately 590 Hz in the applicable configuration
Dimensions	Approx. 2,000–2,300 mm H × 1,000–1,400 mm W × 900–1,200 mm D, configuration dependent
Approx. Weight	Approx. 600–900 kg, configuration dependent
Installation	Indoor industrial electrical installation
Typical Motor Size	Up to approximately 710 kW depending on duty, motor and application
Recommended Application	Large industrial variable-speed motor systems

The electrical ratings and basic construction of the exact catalog number are documented as 400 VAC, three-phase, Frame 9, Type 12/IP54, with 710 kW LD, 630 kW ND, and 500 kW HD ratings.

The dimensions and weight should be treated as engineering planning estimates rather than guaranteed shipping or installation dimensions, because large floor-mounted packaged drives can vary according to power options, cabinet arrangement, input/output configuration, auxiliary equipment, and selected options. The final mechanical drawing should be used when preparing the actual foundation, access clearance, cable entry, lifting arrangement, and transportation plan.

4. Power Rating and Duty Classification

The 20G1G4C1K1JNANNNNN has three important application ratings: LD, ND, and HD.

The LD, or Light Duty, rating is 710 kW at 1182 A. This rating is intended for applications where the motor load is comparatively moderate and the drive does not need to withstand the same degree of continuous overload associated with heavier-duty machinery.

The ND, or Normal Duty, rating is 630 kW at 1112 A. This is a useful reference rating for many general industrial variable-speed applications such as pumps, fans, compressors, conveyors, and process machinery.

The HD, or Heavy Duty, rating is 500 kW at 1040 A. Heavy-duty operation is particularly relevant where the motor is exposed to higher starting torque, frequent acceleration and deceleration, impact loading, or demanding mechanical conditions.

The correct rating should always be selected according to the actual motor nameplate current, load profile, overload requirements, starting torque, acceleration requirements, operating temperature, and application duty rather than simply selecting the largest available kW figure.

5. Product Introduction

The Allen-Bradley 20G1G4C1K1JNANNNNN is designed for large industrial motor applications that require precise variable-speed control at a substantial power level.

Instead of operating a motor continuously at fixed line frequency and using mechanical throttling, valves, dampers, clutches, or other mechanical methods to regulate production, the drive allows motor speed and torque to be controlled electronically.

This can be particularly useful when the process requires different production rates during different operating conditions.

For example, a large pump may need to operate at full capacity during peak production but only at a fraction of its maximum speed during low-demand periods. A variable-frequency drive can adjust motor operation to match the process requirement rather than keeping the motor permanently at full speed.

The PowerFlex 755TL configuration adds a low-harmonic architecture to the high-power drive platform. This is valuable in large facilities where several high-power electronic drives operate from the same electrical distribution system.

The Type 12/IP54 floor-mounted construction also makes the unit suitable for industrial environments where greater enclosure protection is required than a basic open-style drive installation.

6. Low-Harmonic Drive Architecture

One of the main characteristics of the 20G1G4C1K1JNANNNNN is its low-harmonic drive configuration.

Large variable-frequency drives can introduce harmonic currents into the electrical supply. When many high-power drives operate together, harmonic distortion can become an important consideration for transformers, switchgear, generators, capacitors, cables, and other electrical equipment.

The PowerFlex 755TL configuration is intended to address this issue through its low-harmonic drive architecture.

This makes the drive particularly relevant to large industrial plants where electrical power quality is an important part of the overall system design.

Low-harmonic operation can also simplify the design of a larger motor-drive system by reducing the need to solve harmonic problems entirely through separate external equipment.

The exact harmonic performance of the completed installation still depends on the electrical system, transformer impedance, operating point, line conditions, and the complete drive configuration. Therefore, harmonic calculations should be performed for major installations rather than assuming that the drive alone determines the final plant harmonic performance.

7. Air-Cooled Construction

The 20G1G4C1K1JNANNNNN uses air cooling, which is a common approach for high-power industrial drive installations.

The cooling system removes heat generated by the power electronics, switching components, magnetic components, control hardware, and associated electrical equipment.

Because this is a high-power drive, proper ventilation is important.

The installation area should provide adequate air movement, suitable ambient temperature, appropriate clearance around the equipment, and sufficient space for maintenance.

The cooling-air path should remain unobstructed during normal operation.

Dust, oil mist, excessive humidity, corrosive gases, and other contaminants should also be considered during site planning.

8. Type 12 / IP54 Enclosure

The exact model is specified with a Type 12/IP54 floor-mounted enclosure.

This enclosure arrangement is particularly useful for industrial electrical rooms and equipment areas where a more enclosed construction is preferred.

The IP54 classification indicates protection against limited dust ingress and water splashing from different directions under the applicable test conditions.

It should not, however, be interpreted as permission to install the drive in any outdoor environment without additional environmental evaluation.

Temperature, humidity, condensation, corrosive chemicals, altitude, dust concentration, ventilation, and direct exposure to water must all be considered.

9. Motor Control Functions

The PowerFlex 755 platform supports several motor-control approaches, allowing the drive to be matched to different motor and process requirements.

Depending on the selected configuration and application, control can include V/Hz control, sensorless vector control, vector control, and permanent-magnet motor control.

For applications requiring accurate torque production, vector-based control can provide considerably more control flexibility than basic V/Hz operation.

This becomes important in applications such as conveyors, crushers, mills, hoists, compressors, and other machinery where motor torque is directly related to process performance.

The final control mode should be selected according to motor type, required speed range, torque characteristics, feedback requirements, and process dynamics.

10. Automation and Communication

The PowerFlex 755T platform is designed for integration into industrial automation systems.

EtherNet/IP support allows the drive to exchange commands, speed references, status information, diagnostic data, and other control information with an automation controller.

The platform also supports option modules for feedback, I/O, safety, and communications. This allows the drive to be adapted to the requirements of different control architectures.

For a large plant, this type of integration can reduce the amount of hardwired control required between the drive and the automation system.

Drive status, alarms, operating conditions, and process-related information can also be made available to the control system, improving the visibility of the motor-driven equipment.

11. TotalFORCE Control

The exact 20G1G4C1K1JNANNNNN configuration is specified with TotalFORCE control.

This control platform is intended for high-performance motor control and provides a common control environment across the PowerFlex 755T family.

For demanding applications, advanced control can help improve speed regulation, torque response, acceleration, deceleration, and overall motor behavior.

The practical benefit depends heavily on correct commissioning.

Motor nameplate information, encoder settings where applicable, speed limits, acceleration and deceleration ramps, current limits, torque limits, control mode, and process interlocks should all be configured according to the actual machine.

12. Applications

Large Pumps

The 20G1G4C1K1JNANNNNN is suitable for large centrifugal and process pumps.

Variable-speed operation allows pump output to be adjusted to process demand.

This can be useful in water treatment, industrial water systems, cooling systems, process plants, irrigation systems, and large fluid-transfer installations.

Fans and Blowers

Large ventilation fans, cooling fans, exhaust systems, combustion-air systems, and industrial blowers can benefit from variable-speed control.

Instead of continuously operating the motor at full speed, the drive can adjust motor speed according to the actual airflow requirement.

This can improve process control and may reduce unnecessary mechanical throttling.

Compressors

Large industrial compressors are another important application area.

The drive can control compressor motor speed while coordinating acceleration, deceleration, operating limits, and process demand.

Applications can include industrial air systems, process gas systems, refrigeration-related equipment, and other large rotating compressor machinery, subject to the compressor manufacturer’s operating requirements.

Conveyors

The drive is well suited to large conveyors used in mining, bulk material handling, cement production, aggregate processing, ports, and heavy industrial facilities.

Controlled acceleration can help reduce mechanical shock to belts, couplings, gearboxes, and other transmission components.

Variable-speed operation can also allow the conveyor to match production requirements.

Crushers and Mills

Crushers, mills, grinders, and other heavy rotating machines can place substantial demands on the motor and drive.

The HD rating of the drive becomes particularly relevant in applications involving high starting torque and rapidly changing mechanical load.

Proper application engineering is important because the motor, gearbox, coupling, mechanical inertia, and drive must be considered as one system.

Mining Equipment

Mining operations often use very large motors for conveyors, crushers, pumps, fans, mills, and other process equipment.

The high-power rating, floor-mounted construction, and low-harmonic architecture make this type of drive suitable for many large mining electrical systems.

Cement Plants

Cement manufacturing facilities commonly contain high-power fans, conveyors, mills, crushers, pumps, and other rotating machinery.

Variable-speed control can provide process flexibility while low-harmonic operation can help manage the electrical impact of multiple large drives operating within the same plant.

Steel and Metal Processing

Steel mills and metal-processing facilities frequently require large motors for fans, pumps, conveyors, rollers, cooling systems, and other machinery.

The PowerFlex 755TL platform can be used where precise motor control and high-power variable-speed operation are required.

Water and Wastewater

Large water and wastewater facilities often use motors in the hundreds of kilowatts for pumping, aeration, water transfer, and treatment processes.

Variable-speed control can allow equipment output to follow changing flow requirements rather than relying entirely on mechanical throttling.

Chemical and Process Industries

Process plants often require accurate control of pumps, fans, compressors, mixers, and other rotating equipment.

The drive can be integrated with a plant automation system so that motor speed and torque become part of the overall process-control strategy.

Material Handling

Large material-handling systems can use variable-speed drives for conveyors, elevators, feeders, crushers, and transfer systems.

Controlled acceleration and deceleration can help reduce mechanical stress while providing more flexible production control.

13. Main Advantages

High-Power Capability

One of the most obvious advantages of the 20G1G4C1K1JNANNNNN is its high power rating.

With ratings reaching 710 kW LD, 630 kW ND, and 500 kW HD, the drive is intended for substantial industrial motors rather than small or medium machine applications.

Low-Harmonic Operation

The PowerFlex 755TL configuration is designed specifically for low-harmonic operation.

This is particularly valuable in large plants where several high-power drives share a common electrical distribution network.

400 V Class Operation

The 400 VAC class makes the model appropriate for industrial electrical systems operating within the 380–480 VAC range.

This voltage class is widely used in industrial facilities and supports high motor power without requiring the very high currents associated with lower-voltage systems.

Heavy-Duty Capability

The 500 kW HD rating provides a substantial power level for applications where mechanical loading and overload requirements are more demanding.

This can be useful for crushers, conveyors, mills, compressors, and other equipment with difficult starting or variable mechanical loads.

Enclosed Industrial Construction

The Type 12/IP54 floor-mounted construction provides a more enclosed installation arrangement than an open-style drive.

This can be advantageous in industrial electrical rooms where protection against dust and water splashing is an important consideration.

Advanced Motor Control

The platform provides multiple motor-control options, allowing the drive to be configured for different motor technologies and application requirements.

Industrial Network Integration

EtherNet/IP capability allows the drive to be incorporated into modern industrial automation networks.

This can reduce hardwired control requirements and provide centralized access to drive status, commands, diagnostics, and operating data.

Flexible Configuration

The PowerFlex 755T platform supports option modules for feedback, I/O, communications, safety, and related functions.

This makes the system adaptable to different machine-control architectures.

Improved Process Control

Variable-speed control can provide more direct control of process output.

Instead of controlling a fixed-speed motor through mechanical restrictions, the motor itself can be operated at the speed required by the process.

Reduced Mechanical Stress

Controlled acceleration and deceleration can reduce sudden mechanical shock.

This is particularly useful for large conveyor belts, pumps, fans, compressors, and rotating machinery with significant inertia.

14. Dimensions and Weight

Because this is a large floor-mounted Frame 9 packaged drive, the physical size is considerably larger than a standard wall-mounted VFD.

For preliminary engineering and layout work, a reasonable planning envelope is approximately:

Mechanical Parameter	Approximate Value
Model	20G1G4C1K1JNANNNNN
Mounting	Floor Mount
Enclosure	Type 12 / IP54
Frame	Frame 9
Approx. Height	2,000–2,300 mm
Approx. Width	1,000–1,400 mm
Approx. Depth	900–1,200 mm
Approx. Weight	600–900 kg
Installation Orientation	Vertical Floor Mounted
Cooling	Air Cooled
Service Clearance	Must be determined from final mechanical drawing
Cable Access	Configuration dependent
Lifting Requirement	Suitable industrial lifting equipment recommended

These dimensions and weight values are planning estimates only. The actual physical dimensions and shipping weight can change with the selected power options, enclosure arrangement, line-side equipment, cabinet accessories, cable-entry configuration, and other options.

For a real installation, the final dimensional drawing, shipping drawing, and equipment-specific mechanical documentation should take precedence over these approximate values.

15. Installation Considerations

The 20G1G4C1K1JNANNNNN should be installed in a suitable industrial electrical environment with adequate space for ventilation, inspection, cable routing, maintenance, and component replacement.

Because the unit is a high-power air-cooled drive, heat dissipation must be considered during electrical-room design.

The surrounding air temperature should remain within the applicable operating range.

The installation should also prevent excessive dust accumulation around air filters, cooling paths, fans, and heat-dissipation components.

Adequate clearance should be maintained around doors and service areas so technicians can safely access the equipment.

The floor and supporting structure should also be capable of carrying the complete installed equipment weight.

16. Electrical System Considerations

A drive of this power level should not be selected based only on motor horsepower.

The complete electrical system must be considered.

Important factors include incoming voltage, transformer capacity, available fault current, short-circuit rating, cable size, grounding, disconnecting equipment, protection coordination, motor cable length, motor insulation system, harmonic performance, and emergency-stop requirements.

The motor nameplate current is particularly important.

The drive’s LD, ND, and HD ratings should be compared with the actual motor current and the expected mechanical duty.

For continuous heavy-load operation, the HD rating may be more relevant than the maximum LD power figure.

17. Motor Selection

The motor should be matched carefully to the drive.

Important motor parameters include rated voltage, rated current, rated frequency, rated speed, power, service factor, insulation system, cooling method, bearing arrangement, encoder availability, and permissible variable-frequency-drive operating range.

For large motors, cable length and motor insulation become increasingly important.

The motor should be suitable for inverter operation and should comply with the requirements of the specific installation.

18. Maintenance

Regular maintenance should focus on cooling equipment, electrical connections, enclosure condition, filters where applicable, fans, power connections, control electronics, and diagnostic information.

Cooling fans are especially important because high-power drives generate considerable heat during operation.

A blocked airflow path can increase internal temperature and reduce component life.

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

Loose high-current connections can produce heat and should therefore be treated as an important maintenance item.

19. Recommended Same-Series or Closely Related Models

The following models are useful comparison points within the PowerFlex 755T / PowerFlex 755TL high-power drive range.

Model	Voltage	Enclosure	LD Rating	ND Rating	HD Rating	Cooling
20G1G4C1K0LNANNNNN	400 VAC Class	Type 12/IP54	Approx. 630 kW class	Approx. 560 kW class	Approx. 450–500 kW class	Air Cooled
20G1G4C1K1JNANNNNN	400 VAC Class	Type 12/IP54	710 kW / 1182 A	630 kW / 1112 A	500 kW / 1040 A	Air Cooled
20G1G4C1K1JNDNNNNN	400 VAC Class	Type 12/IP54	710 kW / 1182 A	630 kW / 1112 A	500 kW / 1040 A	Air Cooled
20G1G4C1K4LNANNNNN	400 VAC Class	Type 12/IP54	Higher-power class	Higher-power class	Higher-power class	Air Cooled
20G1G4C302JNDNNNNN	400 VAC Class	Type 12/IP54	High-power industrial rating	High-power industrial rating	High-power industrial rating	Air Cooled

The exact catalog configuration can differ according to HIM selection, power options, feedback, communication, safety, EMI, and other option codes. The closely related 20G1G4C1K1JNDNNNNN differs principally in the HIM configuration, while retaining the same major power and enclosure class.

20. Five Related Models for Comparison

Model	Product Type	Main Characteristics	Typical Use
20G1G4C1K0LNANNNNN	PowerFlex 755TL	400 V class, air cooled, Type 12/IP54	Large pumps, fans, compressors
20G1G4C1K1JNANNNNN	PowerFlex 755TL	710 kW LD / 630 kW ND / 500 kW HD	Large industrial machinery
20G1G4C1K1JNDNNNNN	PowerFlex 755TL	Similar power class with door-mounted HIM configuration	Process and heavy industry
20G1G4C1K4LNANNNNN	PowerFlex 755TL	Higher-power 400 V class configuration	Very large industrial motors
20G1G4C302JNDNNNNN	PowerFlex 755TL	Large-frame air-cooled packaged drive	Heavy industrial applications

The listed related catalog numbers are part of the same broad PowerFlex 755 air-cooled packaged-drive family.

21. Five Popular Allen-Bradley Models for Comparison

For users comparing high-power Allen-Bradley variable-frequency drives, the following models are useful members of the same general PowerFlex 755 product ecosystem.

Model	Series	General Rating Class	Voltage Class	Construction	Typical Application
20G1G3F565LNDNNNNN	PowerFlex 755	High Power	690 VAC Class	Air Cooled	Pumps, fans, conveyors
20G1G3F650LNDNNNNN	PowerFlex 755	High Power	690 VAC Class	Air Cooled	Industrial process equipment
20G1G3F735MNDNNNNN	PowerFlex 755	High Power	690 VAC Class	Air Cooled	Heavy industrial machinery
20G1G3F820LNANNNNN	PowerFlex 755	Very High Power	690 VAC Class	Air Cooled	Large pumps, compressors, mills
20G1G3F920LNDNNNNN	PowerFlex 755	Very High Power	690 VAC Class	Air Cooled	Large industrial drives

These catalog numbers are documented as PowerFlex 755 air-cooled packaged-drive configurations and provide useful comparison points when selecting a high-power drive for large motors.

22. Quick Comparison of the Main Models

Model	Voltage Class	Approx. Power Class	Enclosure	Main Characteristic
20G1G3F565LNDNNNNN	690 VAC	500–630 kW class	Industrial floor-mounted configuration	High-voltage high-power drive
20G1G3F650LNDNNNNN	690 VAC	560–710 kW class	Industrial floor-mounted configuration	Higher-power 690 V application
20G1G3F735MNDNNNNN	690 VAC	630–800 kW class	Industrial floor-mounted configuration	Very large motor applications
20G1G3F820LNANNNNN	690 VAC	710–900 kW class	Industrial floor-mounted configuration	Large process machinery
20G1G3F920LNDNNNNN	690 VAC	800–1,000 kW class	Industrial floor-mounted configuration	Extra-high-power motor control
20G1G4C1K1JNANNNNN	400 VAC Class	500–710 kW class	Type 12/IP54	Low-harmonic 400 V class drive

The major distinction is that the 20G1G4C1K1JNANNNNN operates in the 400 V class, while several of the comparison models are 690 V-class configurations. The correct choice depends on the motor voltage and the plant electrical distribution system rather than power rating alone.

23. Why This Model Is Used in Large Industrial Systems

The 20G1G4C1K1JNANNNNN is aimed at applications where a conventional small VFD is simply not large enough.

At this power level, the drive becomes part of the plant’s main electrical and process-control infrastructure.

The selection process therefore needs to consider the motor, mechanical load, electrical distribution, harmonic requirements, cooling system, automation network, enclosure, maintenance access, and installation environment as one complete system.

Its low-harmonic architecture is particularly relevant when several large drives are installed within one electrical distribution network.

Its high power capability also allows a single drive to control a large motor without splitting the application across multiple smaller drives.

24. Typical Industries

Industry	Typical Equipment
Mining	Conveyors, crushers, mills, pumps, ventilation fans
Cement	Mills, fans, conveyors, crushers, pumps
Steel	Fans, pumps, rollers, cooling systems, conveyors
Water Treatment	Large pumps, booster systems, aeration equipment
Wastewater	Pumping stations, blowers, process equipment
Chemical Processing	Pumps, compressors, fans, mixers
Oil and Gas	Pumps, compressors, fans, auxiliary rotating equipment
Pulp and Paper	Pumps, fans, refiners, conveyors
Power Generation	Pumps, fans, cooling equipment
Material Handling	Conveyors, feeders, elevators
Industrial HVAC	Large fans, pumps, cooling systems
General Manufacturing	Large process motors and production equipment

25. Engineering Selection Checklist

Before ordering or replacing a 20G1G4C1K1JNANNNNN, the following information should be confirmed.

Selection Item	Information to Confirm
Motor Power	Actual motor kW
Motor Current	Full-load current from motor nameplate
Motor Voltage	Actual motor rated voltage
Motor Frequency	50 Hz or 60 Hz
Motor Type	Induction, synchronous, PM, or other
Load Type	Constant torque or variable torque
Starting Torque	Required starting torque
Overload	Required overload percentage and duration
Speed Range	Minimum and maximum operating speed
Acceleration	Required acceleration time
Deceleration	Required deceleration time
Braking	Dynamic, regenerative, or mechanical braking
Feedback	Encoder or sensorless operation
Communication	EtherNet/IP or other required network
Safety	Required safety functions
Enclosure	IP54 / Type 12 requirement
Cooling	Airflow and room temperature
Harmonics	Plant harmonic limits
Cable Length	Motor cable distance
Installation	Floor space and access requirements
Weight	Foundation and lifting requirements
Environment	Dust, humidity, temperature, chemical exposure

26. Product Advantages in Practical Use

The strongest practical feature of the 20G1G4C1K1JNANNNNN is its ability to bring sophisticated variable-speed control to very large industrial motors.

For pump applications, this can provide direct flow and pressure control.

For fan applications, it can allow airflow to be adjusted according to process demand.

For conveyors, it can provide smoother starting and stopping.

For compressors, it can provide controlled speed operation.

For crushers and mills, its high-power and heavy-duty capabilities can be matched to demanding mechanical loads.

For large process plants, its low-harmonic architecture can be valuable when electrical power quality is an important design consideration.

27. Product Summary

The Allen-Bradley 20G1G4C1K1JNANNNNN is a high-power PowerFlex 755TL low-harmonic AC drive designed for large industrial motors.

Its principal configuration is a 400 VAC class, three-phase, air-cooled, floor-mounted drive with Type 12/IP54 enclosure protection and Frame 9 construction.

The published ratings are 710 kW / 1182 A for LD, 630 kW / 1112 A for ND, and 500 kW / 1040 A for HD.

The drive is particularly appropriate for large pumps, fans, compressors, conveyors, crushers, mills, water-treatment systems, mining machinery, cement equipment, steel-processing machinery, chemical plants, and other high-power industrial applications.

Its combination of high power, low-harmonic operation, industrial enclosure construction, advanced motor control, automation-network integration, and flexible configuration makes it suitable for installations where the drive is an important part of the overall plant electrical and control system.

For final engineering selection, the motor nameplate current, load duty, voltage, overload requirement, harmonic limits, environmental conditions, mechanical dimensions, and exact option configuration should all be checked against the project requirements before purchase or installation.