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20G11LF765AN0NNNNN High-Power AC Drive

Product Parameters, Introduction, Applications, Advantages, Series Information and Related Model Recommendations

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1. Product Overview

The 20G11LF765AN0NNNNN is a high-power AC variable frequency drive belonging to the PowerFlex 755 series.

It is designed for large three-phase AC motor applications where high voltage, high current, variable-speed control, reliable motor operation and industrial automation integration are required.

This model is part of the high-power range and is configured for a 690 VAC three-phase power system with a nominal output-current class of 765 A.

The drive is intended for large industrial machinery such as pumps, fans, blowers, conveyors, material-handling systems, process machinery, mining equipment, water-treatment equipment and other high-power rotating machinery.

The model uses an industrial packaged-drive architecture and is associated with a large-frame mechanical configuration suitable for installation in industrial electrical rooms, MCC-style assemblies or dedicated drive cabinets.

The drive provides variable-frequency motor control, allowing the motor speed to be adjusted according to process requirements rather than operating continuously at a fixed speed.

This makes the product particularly useful in applications where the mechanical load changes during operation.

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2. Brand and Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Model	20G11LF765AN0NNNNN
Electrical Class	High-Voltage / High-Current Industrial Drive
Input Voltage Class	690 VAC
Input Phase	Three Phase
Output Current Class	765 A
Cooling	Forced Air / Air Cooled
Application Category	Large Industrial Motor Control
Installation	Industrial Cabinet / MCC / Drive Room

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3. Main Technical Parameters

Parameter	Specification
Model	20G11LF765AN0NNNNN
Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Drive Type	AC Variable Frequency Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Output Current	765 A class
Motor Type	Three-Phase AC Motor
Cooling Method	Forced Air
Drive Frame	High-Power Frame / Large Frame Configuration
Mechanical Style	Large MCC-Style Configuration
Enclosure Class	Industrial Indoor Enclosure
Communication	Industrial Network Integration
Speed Control	Variable Frequency / Variable Speed
Motor Control	AC Motor Control
Installation	Industrial Cabinet / MCC
Depth	800 mm class configuration
Width	Configuration dependent
Height	Configuration dependent
Overall Dimensions	Configuration dependent
Weight	Configuration dependent
Weight (kg)	Configuration dependent
Dynamic Braking	Configuration dependent
Filtering	Configuration dependent
Local Operator Interface	Configuration dependent
DC Bus Terminals	Configuration dependent
Precharge	Configuration dependent
Cooling Airflow	Required
Typical Application	Large Industrial Motors

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4. Product Introduction

The 20G11LF765AN0NNNNN is intended for industrial facilities that require a high-capacity motor drive capable of controlling large AC motors.

Compared with smaller variable frequency drives, this type of high-power drive is designed around substantially larger electrical currents and larger mechanical loads.

The 765 A current class places the unit in a high-power industrial category.

Typical equipment in this range includes large pumps, process fans, mine ventilation systems, large conveyors, blowers, crushers and other machinery driven by high-capacity three-phase motors.

The drive changes the frequency and voltage supplied to the motor so that the motor can operate at different speeds.

Instead of simply switching a large motor directly across the line, the drive can provide controlled acceleration and controlled operating speed.

This approach can improve process control and can also reduce mechanical stress during starting.

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5. Operating Principle

A variable frequency drive controls an AC motor by converting incoming electrical power into a controlled output waveform.

The general operating process can be described as:

AC Input → Power Conversion → DC Link → Inverter → Variable-Frequency AC Output → Motor

The input power is first processed by the drive’s power-conversion section.

The resulting DC-link energy is then controlled by the inverter section.

The inverter generates a controlled output for the motor.

By adjusting output frequency, the drive can regulate motor speed.

By controlling voltage and other motor-control parameters, the drive can also regulate motor torque and operating characteristics.

This makes the system much more flexible than a simple fixed-speed motor starter.

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6. 690 VAC Three-Phase Application

The model is intended for a 690 VAC three-phase industrial power system.

This voltage class is particularly useful for large industrial motors.

Large motors can require very high current at lower voltage levels.

Using a higher motor voltage can help reduce current for a given power level, which can influence:

• Motor cable selection
• Busbar design
• Switchgear selection
• Transformer arrangement
• Electrical distribution
• Motor terminal design
• Protection equipment

For large industrial plants, 690 VAC motor systems are commonly considered when high motor power is required.

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7. 765 A Current Capacity

The 765 A current class is one of the main characteristics of the model.

A drive with this current capability is intended for large industrial motors.

The actual motor must always be matched using its nameplate current and the required duty cycle.

Motor power alone should not be used as the only selection criterion.

The following information should be checked before selecting the drive:

Motor Parameter	Selection Importance
Rated Voltage	Critical
Full-Load Current	Critical
Rated Power	Important
Rated Frequency	Important
Rated Speed	Important
Starting Torque	Critical
Overload Requirement	Critical
Load Inertia	Important
Acceleration Time	Important
Deceleration Time	Important
Duty Cycle	Critical
Motor Insulation	Important

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8. Large Motor Applications

The 20G11LF765AN0NNNNN is aimed at applications where the motor power and current requirements exceed the practical range of smaller drives.

Typical large-motor applications include:

• Large centrifugal pumps
• Mine dewatering pumps
• Large ventilation fans
• Process fans
• Large blowers
• Industrial conveyors
• Mining conveyors
• Material-handling systems
• Water-treatment equipment
• Cement equipment
• Aggregate equipment
• Process machinery
• Industrial circulation systems

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9. Pump Applications

Large pumps are one of the most suitable application categories for high-power variable frequency drives.

Typical examples include:

• Raw-water pumps
• Process-water pumps
• Cooling-water pumps
• Wastewater pumps
• Mine dewatering pumps
• Water-transfer pumps
• Industrial circulation pumps
• Large irrigation pumps

A variable-speed drive allows the pump motor to operate according to actual system demand.

Instead of maintaining full motor speed at all times and controlling flow primarily through mechanical throttling, the drive can adjust motor speed directly.

Potential benefits include:

• Adjustable flow
• Adjustable pressure
• Controlled starting
• Reduced hydraulic shock
• Better process control
• Reduced mechanical stress
• Potential energy savings

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10. Fan Applications

The product is also suitable for appropriately sized large industrial fan systems.

Potential applications include:

• Industrial ventilation
• Mine ventilation
• Cooling towers
• Furnace ventilation
• Exhaust systems
• Process-air systems
• Large air-handling systems

Fan systems often operate under changing airflow requirements.

Variable-speed control allows the motor speed to follow the actual process requirement.

This can provide better control than continuously operating a fan at full speed.

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11. Blower Applications

Large industrial blowers can require substantial motor power.

Potential applications include:

• Wastewater aeration
• Combustion air
• Process air
• Industrial ventilation
• Pneumatic process systems
• Material processing
• Large air-handling systems

The drive can provide controlled motor speed according to the required airflow.

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12. Conveyor Applications

Large conveyors can present significant starting torque and inertia.

A high-power variable frequency drive can provide controlled acceleration.

This can reduce mechanical shock to:

• Conveyor belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Drive pulleys

Controlled acceleration can also help reduce sudden material movement.

For long conveyors, adjustable speed can be useful when production requirements change.

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13. Mining Applications

Mining operations often contain large motors operating under difficult mechanical conditions.

Possible applications include:

• Mine conveyors
• Crushers
• Dewatering pumps
• Ventilation fans
• Material-handling systems
• Processing machinery
• Grinding-related equipment
• Large ventilation systems

Mining applications should receive careful attention to overload capability, environmental conditions, motor insulation, cable length and mechanical inertia.

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14. Cement and Aggregate Applications

Large cement and aggregate plants use many high-power motors.

Potential applications include:

• Crushers
• Large conveyors
• Process fans
• Blowers
• Pumps
• Material-handling systems
• Processing machinery

The ability to control motor speed can provide additional flexibility in plant operation.

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15. Water and Wastewater Applications

Large water and wastewater facilities frequently require high-capacity pump and blower systems.

Potential applications include:

• Pump stations
• Water-transfer systems
• Wastewater pumping
• Aeration blowers
• Process circulation
• Large ventilation equipment

The drive can be integrated into an automated process-control system.

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16. Product Advantages

16.1 High Current Capacity

The 765 A current class makes the drive suitable for large industrial motor applications.

This is a major advantage where smaller drive platforms cannot provide sufficient output current.

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16.2 High-Voltage Motor Compatibility

The 690 VAC configuration makes the drive appropriate for large industrial motor systems designed around this voltage class.

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16.3 Variable-Speed Operation

Variable-speed operation allows the motor to operate at the speed required by the process.

Potential benefits include:

• Better process control
• Reduced mechanical stress
• Adjustable production rate
• Improved flow control
• Improved pressure control
• Adjustable airflow
• Controlled acceleration
• Controlled deceleration

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16.4 Controlled Starting

Large motors can produce considerable electrical and mechanical stress when started directly.

A variable frequency drive can accelerate the motor in a controlled manner.

This can reduce sudden mechanical loading.

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16.5 High-Power Industrial Architecture

The product belongs to a high-power drive platform designed for demanding industrial motor applications.

It is therefore more appropriate for large equipment than compact machine-level drives.

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16.6 Industrial Automation Integration

The PowerFlex 755 platform is intended for integration with industrial automation systems.

This allows the drive to become part of a larger control architecture.

Typical functions include:

• Start commands
• Stop commands
• Speed references
• Status feedback
• Current monitoring
• Fault information
• Warning information
• Diagnostic information

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16.7 Local Maintenance Capability

Depending on the exact suffix configuration, the drive can be supplied with different human-machine-interface options.

A local interface can be useful for:

• Commissioning
• Parameter configuration
• Fault diagnosis
• Local testing
• Maintenance
• Troubleshooting

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17. Mechanical Dimensions

The model belongs to a large industrial mechanical configuration.

For preliminary installation planning, an 800 mm depth class is associated with this type of MCC-style configuration.

However, the complete width and height should not be treated as universal values.

The final mechanical envelope can depend on the exact packaged arrangement.

Dimension	Specification
Depth	800 mm class
Width	Configuration dependent
Height	Configuration dependent
Overall Dimensions	Configuration dependent
Installation Clearance	Required
Cable Clearance	Required
Ventilation Clearance	Required
Maintenance Clearance	Required
Mounting Arrangement	Industrial Cabinet / MCC
Weight (kg)	Configuration dependent

For a new cabinet or MCC design, the final mechanical drawing should be used for exact dimensions.

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18. Weight

The total weight of a high-power packaged drive can vary according to its exact configuration.

Factors that may affect the total weight include:

• Power section
• Cooling components
• Mechanical frame
• Enclosure
• Bus structure
• Control components
• Optional hardware
• Cabinet arrangement

Therefore, the most appropriate specification for the complete product at this stage is:

Weight (kg): Configuration Dependent

Weight Category	Specification
Drive Power Section	Configuration dependent
Complete Drive	Configuration dependent
Cabinet Assembly	Configuration dependent
Shipping Weight	Configuration dependent
Installation Weight	Configuration dependent
Weight (kg)	Configuration dependent

The final weight should be confirmed before lifting, transportation and structural calculations.

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19. Cooling

High-power drives generate significant heat during operation.

The drive therefore requires an appropriate forced-air cooling arrangement.

Good airflow is important for maintaining acceptable operating temperatures.

Installation planning should consider:

• Air intake
• Air exhaust
• Cabinet ventilation
• Cooling-fan access
• Ambient temperature
• Dust accumulation
• Maintenance access
• Airflow direction

Blocked ventilation can increase thermal stress and may reduce operating reliability.

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20. Enclosure and Installation Environment

The drive is intended for an appropriate industrial indoor installation.

The installation environment should be evaluated for:

• Ambient temperature
• Humidity
• Condensation
• Dust
• Oil mist
• Corrosive gases
• Conductive contamination
• Altitude
• Ventilation
• Maintenance access

The drive should be installed in a suitable electrical environment rather than being exposed directly to uncontrolled weather conditions.

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21. Industrial Communication

The PowerFlex 755 platform is designed to support industrial automation integration.

Depending on the exact configuration, communication can be used for:

• Start/stop control
• Speed reference
• Actual speed monitoring
• Output current monitoring
• Drive status
• Warning status
• Fault information
• Diagnostic information
• Parameter access

This allows the drive to become part of a larger automated production system.

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22. Process Control Benefits

A high-power variable frequency drive can provide more than simple motor speed adjustment.

It can become part of the process-control strategy.

For example:

Process Requirement → Controller → Drive Speed Command → Motor Speed → Mechanical Output

This structure can be used for:

• Flow control
• Pressure control
• Airflow control
• Conveyor speed control
• Production-rate control
• Equipment synchronization

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23. Energy Efficiency Potential

Variable-speed operation can provide significant energy-saving potential in suitable applications.

This is particularly important for centrifugal pumps and fans.

When the required process output is lower than maximum capacity, reducing motor speed can reduce energy consumption compared with continuously operating at full speed.

Potential advantages include:

• Reduced unnecessary motor speed
• Reduced throttling losses
• Improved process matching
• Reduced mechanical wear
• Potentially lower operating costs

Actual energy savings depend on the complete mechanical system and operating conditions.

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24. Maintenance Advantages

The drive’s local control and diagnostic capabilities can simplify maintenance work.

Maintenance personnel can use the drive interface and control system to investigate:

• Fault conditions
• Warning conditions
• Operating status
• Motor current
• Speed
• Frequency
• Other operating parameters

Routine maintenance should include:

• Cooling fan inspection
• Ventilation inspection
• Terminal inspection
• Grounding inspection
• Cable inspection
• Dust removal
• Cabinet inspection
• Fault-history review

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25. Typical Installation Arrangement

A large industrial installation can generally contain:

Incoming Power → Protection / Switching → AC Drive → Motor → Mechanical Load

The drive may also be connected to:

PLC / Controller → Industrial Network → Drive

and:

Operator Interface → Control System → Drive

The exact electrical architecture must be designed according to the plant’s electrical standards and application requirements.

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26. Recommended Motor Selection

The drive should be matched to the motor using actual nameplate data.

Motor Parameter	Recommended Check
Voltage	Must match system requirements
Full-Load Current	Must be checked carefully
Power	Compare with drive duty
Frequency	Verify
Speed	Verify
Power Factor	Record
Efficiency	Record
Starting Torque	Evaluate
Load Torque	Evaluate
Overload	Evaluate
Acceleration	Evaluate
Deceleration	Evaluate
Inertia	Evaluate
Insulation	Evaluate
Cable Length	Evaluate

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27. Application Selection Guide

Application	Suitability
Large Centrifugal Pump	Excellent
Large Water Pump	Excellent
Wastewater Pump	Excellent
Large Cooling Fan	Excellent
Large Blower	Excellent
Mine Ventilation Fan	Very Good
Large Conveyor	Very Good
Mining Conveyor	Very Good
Material Handling	Very Good
Cement Equipment	Very Good
Aggregate Equipment	Very Good
Process Machinery	Excellent
Water Treatment	Excellent
High-Inertia Machine	Application Review Required
Crusher	Application Review Required

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28. Five Same-Series or Closely Related Models

The following models are useful for comparison within the same high-power PowerFlex 755 family.

The exact option suffix should always be checked because differences in control interface, filtering, braking, enclosure and other configuration options can affect interchangeability.

Model	Series	Voltage	Current Class	Application Position	Dimensions	Weight (kg)
20G11LF650AN0NNNNN	PowerFlex 755	690 VAC	650 A class	Lower-current alternative	800 mm class / configuration dependent	Configuration dependent
20G11LF710AN0NNNNN	PowerFlex 755	690 VAC	710 A class	Closely related model	800 mm class / configuration dependent	Configuration dependent
20G11LF710JN2NNNNN	PowerFlex 755	690 VAC	710 A	High-power related configuration	800 mm class / configuration dependent	Configuration dependent
20G11LF765AN0NNNNN	PowerFlex 755	690 VAC	765 A	Subject model	800 mm class / configuration dependent	Configuration dependent
20G11LF825AN0NNNNN	PowerFlex 755	690 VAC	825 A class	Higher-current alternative	800 mm class / configuration dependent	Configuration dependent

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29. Related Model — 20G11LF650AN0NNNNN

The 20G11LF650AN0NNNNN is a closely related high-power model.

It belongs to the same PowerFlex 755 series and uses the same general 690 VAC industrial-drive concept.

Parameter	20G11LF650AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	650 A class
Product Type	High-Power AC Drive
Cooling	Air Cooled
Mechanical Class	Large Industrial / MCC Style
Typical Applications	Pumps
Typical Applications	Fans
Typical Applications	Conveyors
Typical Applications	Process Machinery
Dimensions	Configuration dependent
Weight (kg)	Configuration dependent

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30. Related Model — 20G11LF710AN0NNNNN

The 20G11LF710AN0NNNNN is another closely related model in the same high-power family.

It provides a lower current rating than the subject 765 A model.

Parameter	20G11LF710AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	710 A class
Product Type	High-Power AC Drive
Cooling	Air Cooled
Mechanical Style	Large MCC Style
Typical Applications	Pumps
Typical Applications	Fans
Typical Applications	Blowers
Typical Applications	Conveyors
Dimensions	Configuration dependent
Weight (kg)	Configuration dependent

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31. Related Model — 20G11LF710JN2NNNNN

The 20G11LF710JN2NNNNN is another 710 A class configuration within the same series.

It can be useful when comparing different option configurations around the same power level.

Parameter	20G11LF710JN2NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	710 A
Light Duty	800 kW class
Normal Duty	710 kW class
Heavy Duty	590 kW class
Cooling	Forced Air
Mechanical Size	800 mm class
Communication	Configuration dependent
Local Interface	Configuration dependent
Dimensions	Configuration dependent
Weight (kg)	Configuration dependent

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32. Related Model — 20G11LF825AN0NNNNN

The 20G11LF825AN0NNNNN represents a higher-current option within the same high-power family.

It may be considered when the motor requires additional current capacity.

Parameter	20G11LF825AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	825 A class
Product Type	High-Power AC Drive
Cooling	Air Cooled
Mechanical Style	Large MCC Style
Typical Applications	Large Pumps
Typical Applications	Large Fans
Typical Applications	Mining Machinery
Typical Applications	Large Conveyors
Dimensions	Configuration dependent
Weight (kg)	Configuration dependent

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33. Related Model — 20G11LF900AN0NNNNN

The 20G11LF900AN0NNNNN is a higher-current model in the same high-power series.

It can be considered for applications requiring greater current capacity than the 765 A model.

Parameter	20G11LF900AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	900 A class
Product Type	High-Power AC Drive
Cooling	Air Cooled
Mechanical Style	Large MCC Style
Typical Applications	Large Industrial Motors
Typical Applications	Pumps
Typical Applications	Fans
Typical Applications	Process Equipment
Dimensions	Configuration dependent
Weight (kg)	Configuration dependent

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34. Five Popular Models From the Same Brand

The following models represent popular products across different power ranges within the same brand portfolio.

They are not direct substitutes for the 765 A / 690 VAC model.

Model	Series	Voltage Class	Current Class	Typical Application	Dimensions	Weight (kg)
25B-D010N104	PowerFlex 525	480 VAC class	10 A class	Small Pumps / Fans / Machines	Frame dependent	Configuration dependent
25B-D017N104	PowerFlex 525	480 VAC class	17 A class	General Machinery	Frame dependent	Configuration dependent
25B-D027N114	PowerFlex 525	480 VAC class	27 A class	Pumps / Fans / Conveyors	Frame dependent	Configuration dependent
20F11ND077AA0NNNNN	PowerFlex 753	480 VAC class	77 A class	Industrial Machinery	Frame dependent	Configuration dependent
20G11LF765AN0NNNNN	PowerFlex 755	690 VAC	765 A	Large Industrial Motors	800 mm class	Configuration dependent

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35. Comparison of PowerFlex 755 Related Models

Model	Voltage	Current	General Position	Cooling	Mechanical Size	Weight (kg)
20G11LF650AN0NNNNN	690 VAC	650 A class	Lower-current option	Air	800 mm class	Configuration dependent
20G11LF710AN0NNNNN	690 VAC	710 A class	Related option	Air	800 mm class	Configuration dependent
20G11LF710JN2NNNNN	690 VAC	710 A	Related high-power option	Air	800 mm class	Configuration dependent
20G11LF765AN0NNNNN	690 VAC	765 A	Subject model	Air	800 mm class	Configuration dependent
20G11LF825AN0NNNNN	690 VAC	825 A class	Higher-current option	Air	800 mm class	Configuration dependent
20G11LF900AN0NNNNN	690 VAC	900 A class	Higher-current option	Air	800 mm class	Configuration dependent

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36. Technical Parameter Summary

Parameter	20G11LF765AN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Input Voltage	690 VAC
Phase	Three Phase
Output Current	765 A class
Motor Type	Three-Phase AC Motor
Cooling	Forced Air
Mechanical Style	Large MCC Style
Depth	800 mm class
Width	Configuration dependent
Height	Configuration dependent
Overall Dimensions	Configuration dependent
Weight (kg)	Configuration dependent
Installation	Industrial Cabinet / MCC
Application	Large Industrial Motor Control
Typical Loads	Pumps / Fans / Blowers / Conveyors
Heavy Industrial Use	Mining / Water / Cement / Process Machinery
Speed Control	Variable Frequency
Automation Integration	Industrial Control System
Maintenance	Local and Network-Based Diagnostics

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37. Advantages Compared With Fixed-Speed Motor Starting

Feature	Fixed-Speed Starting	High-Power VFD Operation
Motor Speed	Fixed	Adjustable
Starting Control	Limited	Controlled
Acceleration	Typically fixed	Adjustable
Process Speed	Fixed	Adjustable
Flow Control	Often mechanical	Can be speed based
Pressure Control	Limited	Can be speed based
Airflow Control	Limited	Adjustable
Conveyor Speed	Fixed	Adjustable
Motor Monitoring	Limited	Extensive
Automation Integration	Additional equipment may be needed	Drive-based integration
Fault Information	Limited	Drive diagnostics available

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38. Key Selection Advantages

The 20G11LF765AN0NNNNN can be a strong choice when the project requires:

• 690 VAC motor operation
• High output current
• Large motor capacity
• Variable-speed operation
• Controlled acceleration
• Controlled deceleration
• Industrial automation integration
• Large pump control
• Large fan control
• Large blower control
• Conveyor control
• Process-machine control
• High-power industrial operation

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39. Engineering Considerations

Although the drive provides high electrical capacity, the complete installation must be designed as a system.

Particular attention should be paid to:

Electrical System

The incoming power system must be compatible with the drive’s voltage and current requirements.

Motor

The motor’s rated voltage, full-load current, power, frequency and operating range must be checked.

Mechanical Load

The machine’s torque curve and inertia must be evaluated.

Cooling

Adequate ventilation must be provided.

Cabling

Motor and power cables must be correctly sized and installed.

Grounding

The drive, motor and cabinet must have an appropriate grounding arrangement.

EMC

Cable routing and grounding should be considered to reduce unwanted electrical interference.

Braking

If the machine requires rapid deceleration, the braking arrangement must be evaluated separately.

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40. Typical Customer Selection Logic

A practical selection process can be summarized as follows:

Step 1 — Determine Motor Voltage

Confirm that the motor belongs to the appropriate 690 VAC class.

Step 2 — Determine Motor Current

Check the motor nameplate full-load current.

Step 3 — Determine Duty

Identify whether the application is light-duty, normal-duty or heavy-duty.

Step 4 — Evaluate Load Type

Determine whether the machine is a pump, fan, conveyor, crusher, blower or another load.

Step 5 — Evaluate Overload

Determine the required overload current and duration.

Step 6 — Evaluate Acceleration

Determine the required acceleration time.

Step 7 — Evaluate Deceleration

Determine whether the machine requires controlled or rapid stopping.

Step 8 — Check Mechanical Dimensions

Confirm cabinet depth, width, height and maintenance clearance.

Step 9 — Check Weight

Confirm the actual packaged-drive weight in kilograms.

Step 10 — Check Control Architecture

Confirm the required network, local interface and control functions.

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41. Product Advantages Summary

Advantage	Description
High Current	765 A class
High Voltage	690 VAC
Large Motor Capability	Suitable for high-power motors
Variable Speed	Yes
Controlled Start	Yes
Process Control	Excellent
Pump Control	Excellent
Fan Control	Excellent
Blower Control	Excellent
Conveyor Control	Very Good
Mining Applications	Very Good
Water Treatment	Excellent
Automation Integration	Excellent
Industrial Construction	High-Power Industrial Platform
Mechanical Integration	Large MCC-Style Configuration
Maintenance	Local / Network-Based Diagnostic Capability

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42. Final Product Description

The 20G11LF765AN0NNNNN is a high-power variable frequency drive designed for large industrial three-phase AC motors.

Its 690 VAC voltage class and 765 A current class place it in a high-power industrial category suitable for large machinery.

The product is particularly appropriate for facilities where large motors must operate at different speeds according to process requirements.

Typical applications include large pumps, fans, blowers, conveyors, mining equipment, water-treatment systems, cement equipment, aggregate machinery and process equipment.

The PowerFlex 755 platform provides a flexible architecture for integrating high-power motor control into industrial automation systems.

The drive can be used to control motor speed, provide controlled acceleration, monitor motor operation and communicate operating information to a larger control system.

For large pump and fan applications, variable-speed control can also provide the opportunity to reduce unnecessary energy consumption when the process does not require full output.

The large mechanical configuration should be considered during cabinet and electrical-room planning.

For preliminary planning, an 800 mm depth class is applicable to the relevant MCC-style configuration, while the exact width and height should be confirmed from the final mechanical arrangement.

The product’s complete weight should also be treated as configuration dependent. This is particularly important for a high-power packaged drive because the power section, mechanical structure, cooling system and optional hardware can affect the final mass.

Overall, the 20G11LF765AN0NNNNN is best suited to large industrial installations that require a combination of high motor current, 690 VAC operation, variable-speed control, industrial automation capability and large-frame mechanical construction.

It is particularly valuable in applications where motor speed needs to follow changing process demand rather than remaining permanently at a fixed operating point.