Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

20G11LD800AN0NNNNN — Detailed Product Description, Technical Parameters, Applications, Advantages and Related Models

1. Product Overview

The 20G11LD800AN0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial motor-control applications.

It is an air-cooled, floor-standing, packaged AC drive intended for three-phase industrial power systems. The model is rated for 480 VAC input and has an 800 A output-current rating.

This configuration is particularly suited to large motors used in conveyors, pumps, fans, blowers, material-handling equipment, process machinery, mining equipment and other heavy industrial systems.

The drive belongs to the PowerFlex 755 family and uses a large Frame 9 power section. Its cabinet configuration is based on an 800 mm deep MCC-style enclosure, with Type 1 / IP20 protection.

The model is designed for applications where a simple motor starter is not enough and where controlled speed, acceleration, deceleration, torque and process integration are important.

---

2. Brand and Product Series

The 20G11LD800AN0NNNNN is therefore not a compact wall-mounted VFD. It is a large industrial drive intended to be installed as part of a substantial electrical and automation system.

---

3. Main Technical Parameters

---

4. Horsepower and Duty Ratings

One of the most important characteristics of the 20G11LD800AN0NNNNN is its different horsepower ratings according to duty level.

The duty rating should always be considered together with the actual motor nameplate current and operating conditions.

A machine that operates continuously at high torque, repeatedly accelerates heavy loads or experiences significant overloads may need to be selected according to the Heavy-Duty rating rather than simply using the maximum Light-Duty horsepower.

---

5. Product Introduction

The 20G11LD800AN0NNNNN is intended to provide variable-speed control for large three-phase AC motors.

Instead of supplying the motor with fixed-frequency power, the drive electronically controls the motor’s electrical supply.

The basic operating concept is:

Three-Phase AC Supply → Input Section → DC Bus → Inverter → Variable-Frequency AC Output → Motor

The output frequency and voltage can be adjusted to control motor speed and operating performance.

This makes the drive useful for industrial machinery where the motor needs to operate at different speeds according to process requirements.

---

6. What Makes This Model Different

The 800 A current rating is the most significant specification.

An 800 A drive belongs to a large industrial power category.

It is intended for machinery where motor power can reach hundreds of horsepower.

Typical applications include:

• Large conveyors
• Mining conveyors
• Bulk-material handling
• Large pumps
• Industrial fans
• Large blowers
• Crushers
• Cement-processing machinery
• Heavy manufacturing equipment
• Large ventilation systems
• Process machinery
• Material transportation systems

The drive is therefore normally installed in a dedicated electrical room, motor-control area or industrial equipment enclosure rather than in a small machine control panel.

---

7. Electrical Characteristics

The drive is designed around a 480 VAC three-phase industrial power system.

The principal electrical characteristics are shown below.

---

8. Mechanical Parameters

The mechanical construction is an important consideration when selecting this model.

Important note regarding dimensions and weight

For a drive of this size, it is better not to insert an invented weight into an engineering specification.

The 800 mm cabinet depth is associated with the specified MCC-style configuration.

However, the final overall height, width and weight can depend on the exact packaged arrangement.

For purchasing, transportation, lifting, foundation design or structural calculations, the exact mechanical drawing and equipment documentation should be used.

---

9. Product Applications

9.1 Large Conveyor Systems

The 20G11LD800AN0NNNNN is well suited to large conveyor applications.

Industrial conveyors can have substantial mechanical inertia, particularly when they are carrying heavy materials over long distances.

Typical applications include:

• Mining conveyors
• Ore conveyors
• Coal conveyors
• Aggregate conveyors
• Cement conveyors
• Port conveyors
• Bulk-material conveyors
• Stockyard conveyors
• Heavy-duty production conveyors

The drive allows the conveyor motor to accelerate in a controlled manner.

This can help reduce mechanical shock to:

• Gearboxes
• Couplings
• Shafts
• Bearings
• Belts
• Conveyor structures

---

10. Mining Applications

Mining equipment frequently requires very high-power motors.

Potential applications include:

• Ore transportation
• Mining conveyors
• Crushing systems
• Material transfer
• Mine ventilation
• Dewatering
• Processing machinery
• Bulk-material handling

The 800 A capacity gives the drive the electrical capability needed for large motors.

In mining applications, environmental conditions must be considered carefully because dust, vibration, temperature and ventilation can have a major effect on electrical equipment.

---

11. Pumping Applications

Large industrial pumps can require hundreds of horsepower.

The drive can be used for applications such as:

• Industrial water transfer
• Cooling-water systems
• Mine dewatering
• Process-water systems
• Large pumping stations
• Wastewater processes
• Chemical process pumping
• Industrial circulation systems

A variable-speed drive allows the pump motor speed to follow process requirements.

For example, if a system requires lower flow, the motor can operate at a lower speed instead of continuously operating at maximum speed.

---

12. Large Fan Applications

Large industrial fans can also require substantial motor power.

Typical applications include:

• Mine ventilation
• Industrial ventilation
• Furnace ventilation
• Process exhaust
• Cooling systems
• Large air-handling equipment
• Industrial extraction systems

Variable-speed control allows the airflow to be adjusted according to actual process demand.

---

13. Blower Applications

Large blowers are another possible application.

The drive can be used in systems requiring:

• Process air
• Combustion air
• Industrial ventilation
• Dust collection
• Pneumatic processes
• Process gas circulation

The motor speed can be adjusted to suit the process instead of relying only on mechanical restriction or throttling.

---

14. Cement and Aggregate Equipment

Large cement and aggregate plants often contain numerous high-power motors.

Possible applications include:

• Large conveyors
• Process fans
• Blowers
• Material handling
• Crushing equipment
• Large pumps
• Process ventilation

The 800 HP Light-Duty rating gives this model sufficient capacity for many large industrial machines.

---

15. Steel and Heavy Manufacturing

Heavy manufacturing plants may use large motors for:

• Cooling systems
• Large pumps
• Process fans
• Conveyors
• Material handling
• Large rotating equipment
• Production lines

In these environments, variable-speed control can improve process flexibility.

---

16. Port and Bulk-Material Handling

Large port facilities can use high-power drives for:

• Ship-loading equipment
• Ship-unloading systems
• Conveyor systems
• Bulk-material transfer
• Storage-yard conveyors
• Material transportation
• Large handling equipment

The ability to control acceleration is especially useful for equipment with large mechanical inertia.

---

17. Main Advantages

17.1 High 800 A Current Capacity

The biggest advantage of the model is its 800 A output current capability.

This puts it in a high-power industrial category.

It can be used for motors that are far beyond the range of compact variable-frequency drives.

---

17.2 High Horsepower Capability

The model provides:

• 800 HP Light Duty
• 700 HP Normal Duty
• 600 HP Heavy Duty

This provides considerable flexibility for large motor applications.

The Heavy-Duty rating is particularly important for machines requiring high torque or frequent overload capability.

---

17.3 Controlled Motor Starting

Large motors can create significant electrical and mechanical stress when started directly across the line.

Variable-frequency operation allows the motor to accelerate progressively.

This can help reduce:

• Starting shock
• Mechanical stress
• Belt tension changes
• Coupling stress
• Gearbox stress
• Conveyor shock

---

18. Controlled Deceleration

The drive can also control the motor during stopping.

This can be useful for:

• Conveyors
• Large fans
• Pumps
• Processing machinery
• Material-handling systems

The appropriate stopping method depends on the load inertia and braking requirements.

---

19. Variable-Speed Operation

Variable-speed control is one of the principal reasons to select this type of drive.

The motor can operate at different speeds depending on the process.

This can improve:

• Process control
• Production flexibility
• Flow regulation
• Conveyor speed control
• Fan control
• Pump control

---

20. Potential Energy Savings

Variable-speed operation can provide energy savings in suitable applications.

This is particularly relevant to centrifugal pumps and fans.

If the required flow or airflow is reduced, motor speed can also be reduced.

Potential energy savings depend on:

• Load characteristics
• Operating hours
• Speed range
• Motor efficiency
• Pump/fan characteristics
• Process requirements

Energy savings should therefore be calculated using actual operating data rather than assumed percentages.

---

21. Automation Integration

The PowerFlex 755 family is designed for industrial automation environments.

A typical installation may look like:

PLC / Controller → AC Drive → Motor → Machine → Process

The control system can monitor and command functions such as:

• Speed
• Start
• Stop
• Motor current
• Drive status
• Fault status
• Operating condition
• Process reference
• Alarm condition

This makes the drive more than a simple motor starter.

It becomes part of the overall machine-control system.

---

22. Cooling System

The model uses an air-cooled / forced-air cooling arrangement.

An 800 A drive produces significant heat during operation.

Therefore, the installation needs adequate airflow.

Important considerations include:

• Cabinet ventilation
• Cooling fan operation
• Air passage cleanliness
• Ambient temperature
• Ventilation-room design
• Dust accumulation
• Maintenance access

If the cooling system becomes restricted, internal temperature can rise and reduce equipment reliability.

---

23. Enclosure and Protection

The specified configuration uses:

Type 1 enclosure

and:

IP20 protection

This is appropriate for a controlled indoor industrial installation.

The enclosure should not be interpreted as weatherproof or suitable for direct outdoor exposure.

If the drive must operate in a dusty, wet or corrosive environment, the complete installation arrangement needs to provide the necessary environmental protection.

---

24. Installation Considerations

Because this is a large high-power drive, installation planning is important.

Before installation, engineers should evaluate:

1. Incoming power supply.
2. Motor voltage.
3. Motor full-load current.
4. Motor horsepower.
5. Duty cycle.
6. Overload requirement.
7. Acceleration time.
8. Deceleration time.
9. Braking requirement.
10. Motor cable size.
11. Grounding.
12. Cabinet dimensions.
13. Floor loading.
14. Cooling requirements.
15. Maintenance clearance.
16. Transportation access.
17. Lifting equipment.
18. Control-system requirements.

---

25. Maintenance Considerations

Regular inspection is important for a large industrial drive.

---

26. Five Same-Series or Closely Related Models

The following models are useful comparisons within the high-power PowerFlex 755 range.

These models are useful when comparing drive capacity around the 800 A range.

---

27. Detailed Comparison of Related Models

---

28. Five Related Models for Broader Selection

The following models provide additional comparison points across the same general product family.

---

29. Five Popular Related Models Under the Same Brand

For broader equipment selection, the following models are useful reference points.

These models cover a very wide range of motor-control requirements.

The smaller models are intended for compact machinery.

The larger PowerFlex 755 configurations are intended for major industrial installations.

---

30. Small-Drive Comparison

25B-D2P3N114

This model is dramatically smaller than the 20G11LD800AN0NNNNN.

It should not be considered a direct electrical replacement.

It is included to illustrate the range of products available for different motor sizes.

---

31. Small Industrial Drive Comparison

25B-D6P0N114

Again, this is a compact drive and belongs to a completely different power range.

---

32. Medium-Power Industrial Drive

20F11ND077JA0NNNNN

This model occupies a much lower current range than the 800 A configuration.

It can be considered when the motor is significantly smaller.

---

33. Higher-Capacity Comparison

20G11LE900AN0NNNNN

This is a useful higher-capacity comparison with the 800 A model.

---

34. Main Advantages of the 20G11LD800AN0NNNNN

---

35. Advantages for Conveyor Applications

For large conveyor systems, the drive can provide several practical benefits.

A conveyor may have considerable inertia, particularly when:

• The conveyor is long.
• The conveyor is heavily loaded.
• The material is dense.
• The belt is wide.
• The conveyor operates continuously.
• The conveyor has multiple mechanical sections.

Controlled acceleration can reduce sudden torque changes.

This can reduce stress on the mechanical transmission.

---

36. Advantages for Pump Applications

For a large pump, variable-speed operation can help match the motor to actual process demand.

Potential benefits include:

• Adjustable flow
• Adjustable pressure
• Smooth starting
• Controlled stopping
• Reduced throttling
• Process flexibility
• Potential energy reduction

The actual result depends on the pump curve and system design.

---

37. Advantages for Fan Applications

Large fans often do not need to operate at maximum speed all the time.

Variable-speed control allows the fan to respond to changing ventilation requirements.

Potential benefits include:

• Adjustable airflow
• Smooth startup
• Reduced mechanical stress
• Automatic process control
• Potential energy savings
• Improved operating flexibility

---

38. Advantages for Heavy Industrial Machinery

For large rotating machinery, the drive can provide:

• Adjustable motor speed
• Controlled torque
• Controlled acceleration
• Controlled deceleration
• Process integration
• Fault monitoring
• Operating-status feedback

This can make the machine easier to operate and integrate into an automated production environment.

---

39. Environmental Considerations

The Type 1 / IP20 configuration is intended for an appropriate indoor industrial environment.

Particular attention should be paid to:

---

40. Maintenance Strategy

A large industrial drive should be included in a preventive-maintenance program.

A practical maintenance program may include:

Daily or Routine Checks

• Check abnormal noise.
• Check unusual cabinet temperature.
• Check cooling airflow.
• Check fault indications.
• Check operating conditions.

Periodic Inspection

• Inspect cooling fans.
• Inspect air passages.
• Inspect electrical connections.
• Check grounding.
• Inspect control wiring.
• Review fault history.

Planned Maintenance

• Clean appropriate internal areas.
• Inspect power connections.
• Evaluate cooling performance.
• Check cabinet condition.
• Review operating records.
• Replace wear-related components according to the maintenance plan.

---

41. Selection Checklist

Before selecting this drive for a machine, the following information should be checked.

---

42. Important Difference Between Light Duty and Heavy Duty

The model’s three ratings should not be treated as interchangeable.

For example:

800 HP Light Duty

does not mean that every 800 HP motor is automatically suitable.

If the machine has frequent overloads or high starting torque, the Heavy-Duty rating may become the more appropriate reference.

The correct selection should therefore be based on the actual motor current and machine load profile rather than horsepower alone.

---

43. Product Positioning

The 20G11LD800AN0NNNNN can be considered a high-power industrial drive positioned between lower-current large-frame configurations and higher-current 900 A, 960 A and larger configurations.

A simplified comparison is:

The 800 A model therefore occupies a significant position within the large-drive category.

---

44. Complete Technical Parameter Table

---

45. Final Summary

The 20G11LD800AN0NNNNN is a high-power PowerFlex 755 AC drive intended for large industrial motor applications.

Its most important specifications are:

• 480 VAC
• Three Phase
• 800 A
• 800 HP Light Duty
• 700 HP Normal Duty
• 600 HP Heavy Duty
• Frame 9
• Air Cooled
• Type 1
• IP20
• 800 mm deep MCC-style cabinet
• Floor-standing installation

Its main purpose is to provide controlled variable-speed operation for large AC motors.

The model is especially suitable for large conveyors, mining equipment, bulk-material handling systems, industrial pumps, fans, blowers, cement and aggregate machinery, large ventilation equipment and heavy process machinery.

Its main advantages are its high current capacity, large horsepower capability, controlled acceleration and deceleration, variable-speed operation, industrial automation compatibility and suitability for large motor-control systems.

For comparison, the closest models around this capacity include 20G11LD710AN0NNNNN, 20G11LD740AN0NNNNN, 20G11LD800AN0NNNNN, 20G11LE825AN0NNNNN and 20G11LE900AN0NNNNN.

When selecting between these models, the most important factors are not horsepower alone. Motor full-load current, duty cycle, overload requirements, load type, acceleration requirements, braking requirements and environmental conditions should all be evaluated.

For the mechanical portion, the specified configuration has an 800 mm cabinet depth. The exact overall height, width and weight in kg should be treated as configuration-specific rather than estimated. This is particularly important for a large Frame 9 drive because the exact cabinet arrangement can affect transportation, lifting and floor-loading calculations.

Overall, the 20G11LD800AN0NNNNN is best viewed as a large industrial variable-frequency drive for high-power 480 VAC motor applications, especially where controlled speed and process control are required rather than simple fixed-speed motor operation.