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20G11BF765JN0NNNNN — Detailed Product Information, Technical Parameters, Applications, Advantages and Related Models

The 20G11BF765JN0NNNNN is a high-power industrial AC drive in the PowerFlex 755 series. It is designed for large three-phase motor applications where high current capacity, controlled acceleration, variable-speed operation and integration with industrial automation are required.

This model is a 690 VAC, 765 A, Frame 9, air-cooled packaged drive. It belongs to the high-power range and is more suitable for large industrial machinery than for ordinary small or medium motor applications.

The model is particularly appropriate for large conveyors, pumps, fans, blowers, compressors, mining equipment, cement machinery, material-handling systems and other heavy industrial processes.

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1. Basic Product Identification

Note: The dimensional and weight values above are engineering reference figures for the large Frame 9 packaged configuration. The actual final dimensions and weight can vary with the complete cabinet arrangement and installed options. For physical replacement or installation, the exact equipment drawing and nameplate should always take priority.

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2. Product Series

The 20G11BF765JN0NNNNN belongs to the PowerFlex 755 series.

The PowerFlex 755 family is intended for high-performance industrial AC motor control. It is designed around large industrial applications where the motor may need variable speed, controlled acceleration, controlled deceleration, process coordination and integration with an automation system.

The 765 A configuration is positioned toward the high-power end of the series.

Compared with smaller PowerFlex configurations, this model has a substantially larger electrical and mechanical capacity and is normally installed as part of a dedicated industrial electrical system.

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3. Product Description

The basic purpose of the 20G11BF765JN0NNNNN is to control a large three-phase AC motor.

Instead of connecting the motor directly to a fixed-frequency power source and allowing it to run at essentially one fixed operating speed, the drive regulates the electrical power delivered to the motor.

This allows the motor speed to be adjusted according to the process requirement.

A simplified operating path is:

690 VAC Three-Phase Supply

↓

AC Input / Precharge Section

↓

DC Bus

↓

Power Switching Section

↓

Variable-Frequency AC Output

↓

Three-Phase Motor

↓

Mechanical Equipment

This arrangement makes the drive suitable for machines where speed control is an important part of the production process.

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4. Main Technical Parameters

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5. Electrical Rating

The most important electrical specification of this model is its 765 A rated current.

At a voltage class of 690 VAC, this represents a very high-power motor-control application.

The approximate duty ratings can be summarized as follows:

The exact usable motor rating should be selected according to the motor nameplate current and application duty rather than simply matching the motor’s nominal kW.

This is particularly important for large conveyors, compressors and other equipment with high starting torque or substantial mechanical inertia.

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6. 690 VAC Voltage Class

The 690 VAC class is intended for large industrial motor systems.

At high power levels, using a higher motor voltage helps keep current within a manageable range compared with attempting to deliver the same mechanical power at a much lower voltage.

This voltage class is therefore commonly associated with:

• Mining machinery.
• Large conveyors.
• Large pumps.
• Large industrial fans.
• Cement equipment.
• Process machinery.
• Large compressors.
• Material-handling systems.

The electrical distribution system, motor nameplate and drive configuration should all be matched before installation.

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7. 765 A Current Capacity

The 765 A current rating gives this model a substantial advantage over lower-current versions.

For comparison:

The 765 A rating is useful where the motor operating current is too high for smaller Frame 9 configurations.

It also provides a larger operating range for high-power equipment, although actual motor selection must still respect the applicable duty rating.

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8. Frame 9

The model uses Frame 9 construction.

Frame size affects both electrical capacity and mechanical construction.

A Frame 9 drive is a large industrial device with considerable internal power-handling capacity.

It requires appropriate planning for:

• Cabinet space.
• Cable routing.
• Ventilation.
• Maintenance access.
• Transportation.
• Lifting.
• Floor loading.
• Electrical-room heat removal.

This is not a compact wall-mounted drive.

It is normally treated as a major item of industrial electrical equipment.

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9. Mechanical Dimensions

For planning purposes, the approximate overall dimensions are:

2453 mm × 1200 mm × 800 mm

The 600 mm MCC-style designation should not be interpreted as meaning that every part of the finished equipment has an overall depth of exactly 600 mm.

Doors, control sections, cable compartments and other construction details can affect the final overall envelope.

For a physical installation, the final mechanical drawing should be used.

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10. Weight

The approximate equipment weight is:

1270 kg

This is an important specification for installation planning.

A drive weighing approximately 1.27 tonnes should not be moved using ordinary workshop handling equipment.

The transportation and installation plan should consider:

• Forklift or crane capacity.
• Lifting points.
• Floor loading.
• Door opening dimensions.
• Transport route.
• Cabinet positioning.
• Maintenance clearance.

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11. Cooling System

The 20G11BF765JN0NNNNN is an air-cooled drive.

At this power level, cooling is an important part of the installation.

The drive generates heat during operation, and that heat must be removed continuously.

The electrical room should therefore provide suitable ventilation.

Important considerations include:

• Air inlet clearance.
• Air outlet clearance.
• Cooling fan condition.
• Ambient temperature.
• Dust accumulation.
• Airflow.
• Heat recirculation.

If hot exhaust air is allowed to circulate back into the intake area, the drive can experience unnecessarily high operating temperatures.

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12. Enclosure and Protection

The drive is associated with a NEMA Type 1 / IP20 main enclosure arrangement.

The drive should be installed in an environment appropriate for its enclosure rating.

If the equipment is exposed to excessive dust, moisture, corrosive chemicals or outdoor conditions, additional environmental protection may be required.

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13. Filtered Configuration

The model uses a filtered configuration.

Filtering is useful in large industrial electrical systems where power-electronic switching can interact with other electrical equipment.

A high-power drive can exist in the same plant as:

• Controllers.
• PLC systems.
• Sensors.
• Instrumentation.
• Communication equipment.
• Other motor drives.

Good grounding, bonding and cable routing are still necessary.

The filter should be considered part of the overall electrical installation rather than a substitute for proper system design.

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14. Dynamic Braking

The specified configuration has:

Dynamic Braking: None

This point is particularly important for high-inertia machines.

When a large motor decelerates, energy can be returned toward the drive’s DC bus.

Applications that may require additional braking evaluation include:

• Large conveyors.
• Large fans.
• High-inertia machinery.
• Rapid stopping systems.
• Certain material-handling equipment.

If the application requires very fast stopping, the braking requirement should be evaluated before selecting the final configuration.

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15. Product Applications

The 20G11BF765JN0NNNNN can be considered for a wide range of large industrial applications.

The major application categories include:

1. Mining.
2. Cement manufacturing.
3. Aggregate processing.
4. Large conveyors.
5. Material handling.
6. Large pumps.
7. Industrial fans.
8. Blowers.
9. Compressors.
10. Water and wastewater systems.
11. Large process machinery.
12. Industrial ventilation.

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16. Mining Applications

Mining equipment frequently uses large motors because heavy materials need to be transported over long distances or processed continuously.

The drive can be considered for:

• Long belt conveyors.
• Ore conveyors.
• Transfer conveyors.
• Crushers and associated equipment where the motor-control requirements are compatible.
• Large ventilation fans.
• Dewatering pumps.
• Material-processing equipment.

The variable-speed capability can be useful when production rates change.

For a conveyor, for example, motor speed can be adjusted according to the amount of material being transported.

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17. Conveyor Applications

Large conveyor systems are one of the most suitable areas for a high-power variable-frequency drive.

A large conveyor can have significant inertia.

A controlled acceleration profile can help reduce mechanical shock compared with abrupt starting.

Potential benefits include:

• Reduced belt stress.
• Reduced gearbox shock.
• Reduced coupling stress.
• Smoother acceleration.
• Adjustable conveyor speed.
• Improved process coordination.
• Better control of material flow.

The drive can also be coordinated with upstream and downstream equipment.

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18. Cement Industry Applications

Large cement facilities contain many high-power motors.

Potential applications include:

• Large process fans.
• Conveyors.
• Blowers.
• Pumps.
• Material-handling equipment.
• Cooling systems.
• Process ventilation.

Variable-speed control can allow the equipment to respond to changing production conditions.

For example, a process fan can be operated according to the actual airflow requirement instead of running continuously at full speed.

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19. Aggregate Processing Applications

Aggregate processing systems can contain large motors for:

• Feed conveyors.
• Transfer conveyors.
• Material handling.
• Large fans.
• Pumps.
• Processing equipment.

The 765 A configuration provides considerable current capacity for large motor applications.

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20. Pump Applications

Large pumps are another important application area.

The drive can be used for suitable variable-speed pumping systems such as:

• Water transfer.
• Cooling-water circulation.
• Industrial process water.
• Raw-water pumping.
• Wastewater systems.
• Large pumping stations.

The motor speed can be adjusted according to process demand.

The actual energy performance depends on the pump, piping system and operating point.

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21. Industrial Fan Applications

Large fans often require substantial motor power.

The drive can be used for:

• Furnace fans.
• Exhaust fans.
• Combustion-air fans.
• Process ventilation.
• Dust collection.
• Cooling systems.
• Industrial ventilation.

The ability to adjust speed allows airflow to be matched more closely to process requirements.

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22. Blower Applications

Large blowers can also benefit from variable-speed operation.

Typical applications include:

• Wastewater aeration.
• Process air.
• Industrial ventilation.
• Combustion systems.
• Pneumatic processes.

If the air demand changes, the motor speed can be adjusted accordingly.

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23. Compressor Applications

Large compressors can require very high motor current.

The 765 A configuration can be considered for suitable compressor applications where variable-speed motor operation is supported.

Important factors include:

• Compressor operating range.
• Starting torque.
• Motor current.
• Acceleration time.
• Minimum operating speed.
• Maximum operating speed.
• Deceleration requirements.

The compressor manufacturer’s motor and drive requirements should always be considered together.

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24. Main Product Advantages

24.1 High 765 A Current Rating

The biggest advantage of this model is its 765 A output-current capacity.

This allows it to serve large motors that exceed the practical range of lower-current drive configurations.

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24.2 690 VAC High-Power Operation

The 690 VAC class makes the drive suitable for large industrial motor systems.

It is particularly relevant to high-power plants where 690 VAC motors are used.

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24.3 High Power Capacity

The approximately 750 kW normal-duty rating places the model in a high-power industrial category.

It is suitable for large machines that require substantial continuous motor power.

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24.4 Heavy-Duty Capability

The approximately 630 kW heavy-duty rating makes the drive useful for more demanding applications.

This is important for machines that require higher torque or experience more demanding operating conditions.

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24.5 Variable-Speed Operation

The motor does not have to operate at one fixed speed.

The drive can adjust speed according to:

• Production rate.
• Flow.
• Pressure.
• Material quantity.
• Process requirements.

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24.6 Controlled Acceleration

Large motors can be accelerated progressively.

This can reduce sudden mechanical stress.

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24.7 Industrial Automation Integration

The drive can be integrated into larger industrial control architectures.

This allows motor speed and operating conditions to become part of the overall process-control strategy.

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24.8 Air-Cooled Design

Air cooling can be practical for large industrial installations where suitable ventilation is available.

It avoids the need for a dedicated liquid-cooling system.

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24.9 Filtered Configuration

The filtered configuration is useful in industrial electrical environments where electromagnetic compatibility is important.

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25. Five Related Models from the Same Series

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

These models are particularly useful when selecting a replacement or determining whether a smaller or larger current rating would be more appropriate.

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26. Five Related 765 A Configurations

Because the 765 A rating is the primary electrical characteristic, different catalog configurations can also be compared.

The electrical rating alone does not make these models interchangeable.

The suffix configuration should be checked carefully when selecting a replacement.

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27. Five Same-Brand Popular Models for Comparison

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28. Current Capacity Comparison

The 765 A model represents a useful point between the 710 A and higher-current configurations.

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29. Model Comparison by Power

The 765 A model is particularly useful when the motor current is above the practical range of the 710 A configuration but does not justify moving to a substantially larger current class.

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30. Application Selection Guide

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31. Motor Compatibility Considerations

When using this drive, the motor should be evaluated using more than its kW rating.

Important parameters include:

The motor’s nameplate current should be compared with the drive’s applicable current rating.

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32. Advantages in Conveyor Systems

A large conveyor may contain a considerable amount of stored mechanical energy.

Starting the motor too aggressively can cause unnecessary stress.

The drive provides the opportunity to establish a controlled acceleration profile.

This can help improve:

• Belt life.
• Gearbox life.
• Coupling life.
• Mechanical stability.
• Material flow.
• Starting behavior.

It also allows conveyor speed to be adjusted according to production requirements.

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33. Advantages in Pump Systems

The drive can provide adjustable pump speed.

This allows the pumping system to respond to changes in demand.

For example:

Low demand → lower speed

Normal demand → medium speed

High demand → higher speed

This can provide better process control than continuously operating a pump at maximum speed.

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34. Advantages in Fan Systems

Industrial fans often do not need to operate at maximum output all the time.

Variable-speed operation can allow:

• Lower airflow when demand is low.
• Higher airflow when demand increases.
• Smoother process control.
• Reduced mechanical stress.
• Potential energy savings.

The actual savings depend on the fan system and operating point.

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35. Advantages in Mining

Mining equipment often operates for long periods under heavy load.

The high current capability of this model makes it suitable for evaluating large mining motors.

The drive can provide:

• Controlled acceleration.
• Variable speed.
• Process coordination.
• Adjustable production rate.
• High-power motor control.

The installation environment should be evaluated carefully because mining environments may involve dust, vibration and elevated ambient temperatures.

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36. Advantages in Cement Plants

Cement production requires many high-power machines.

The drive can be considered for:

• Conveyors.
• Fans.
• Blowers.
• Pumps.
• Material handling.
• Process machinery.

The ability to vary motor speed can improve coordination between different parts of the process.

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37. Advantages in Water Treatment

Water and wastewater facilities commonly require large pumps and blowers.

Variable-speed operation allows the equipment to respond to changing water flow or aeration requirements.

Possible benefits include:

• Better flow regulation.
• Better pressure control.
• Reduced mechanical stress.
• Flexible operation.
• Potential energy savings.

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38. Automation Integration

The drive can form part of a larger industrial control system.

A simplified arrangement is:

Process Sensors

↓

Industrial Controller

↓

Drive

↓

Motor

↓

Mechanical Equipment

The controller can use information such as:

• Pressure.
• Flow.
• Temperature.
• Level.
• Material rate.
• Production speed.

to determine the desired motor operating condition.

The drive then adjusts motor operation accordingly.

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39. Preventive Maintenance

For a high-power drive, preventive maintenance is particularly important because a drive failure can stop a major production process.

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40. Installation Considerations

The approximate 1270 kg weight means the installation needs proper structural planning.

Before installation, check:

• Floor capacity.
• Cabinet dimensions.
• Lifting equipment.
• Transportation route.
• Door clearance.
• Cable entry.
• Maintenance space.
• Ventilation.
• Heat dissipation.

Electrical planning should also include:

• Input protection.
• Cable sizing.
• Motor cable sizing.
• Grounding.
• Bonding.
• EMC considerations.
• Short-circuit requirements.
• Motor compatibility.

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41. Why Choose the 20G11BF765JN0NNNNN?

The model is particularly attractive when the application requires a high-power drive but does not require the substantially larger capacity of the next higher current classes.

Its main strengths are:

765 A current capacity

690 VAC operation

Frame 9 construction

Air-cooled architecture

Approximately 750 kW normal-duty capacity

Approximately 630 kW heavy-duty capacity

Filtered configuration

NEMA Type 1 / IP20 industrial enclosure

Large industrial motor-control capability

The model is therefore well suited to high-power equipment where reliability, controllability and process flexibility are important.

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42. Complete Technical Parameter Table

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43. Overall Product Advantages

The 20G11BF765JN0NNNNN can be summarized as a large-capacity industrial variable-frequency drive with the following main advantages:

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44. Final Summary

The 20G11BF765JN0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial three-phase motor applications.

Its primary electrical characteristics are:

690 VAC

3 Phase

765 A

Approximately 750 kW Normal Duty

Approximately 630 kW Heavy Duty

Frame 9

Air Cooled

Filtered Configuration

No Dynamic Braking

NEMA Type 1

IP20

600 mm Deep MCC Style

Approximately 2453 × 1200 × 800 mm

Approximately 1270 kg

Its application range includes mining conveyors, cement equipment, aggregate processing, large pumps, industrial fans, blowers, compressors, water-treatment equipment, material-handling systems and other large process machinery.

The principal reason to choose the 765 A configuration is its ability to handle a very large motor load while remaining within the Frame 9 high-power architecture.

Compared with the 590 A, 650 A and 710 A versions, the 765 A model provides a higher current capacity. At the same time, the related 795 A and higher-current configurations provide additional capacity when the motor requirement exceeds the 765 A range.

For replacement applications, the complete catalog number 20G11BF765JN0NNNNN should be treated as the reference configuration. A model with the same voltage and current rating is not automatically an equivalent replacement because differences can exist in filtering, braking, operator-interface arrangements, cabinet construction and other factory options.

From an engineering perspective, the most important selection factors are the motor full-load current, motor voltage, duty classification, overload requirement, acceleration/deceleration requirements, braking requirement, environmental conditions, cabinet dimensions and available cooling.

For a large industrial motor system where the requirement is around the 765 A / 690 VAC range, this model represents a substantial high-power drive configuration suitable for demanding variable-speed applications.