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

Allen-Bradley 20G1G3E595LNDNNNNN — Detailed Product Introduction, Specifications, Applications, Advantages and Related Models

The 20G1G3E595LNDNNNNN is a high-power AC variable-frequency drive belonging to the PowerFlex 755 product family and the PowerFlex 755T / low-harmonic drive configuration range.

It is designed for large three-phase industrial motors where high power, adjustable speed, controlled acceleration and deceleration, low-harmonic input performance, and integration with an industrial automation system are required.

The model is a 600 V AC, three-phase, air-cooled, floor-mounted high-power drive. Its rating is approximately 700 HP for Light Duty, 600 HP for Normal Duty, and 550 HP for Heavy Duty, with the corresponding current ratings reaching approximately 690 A LD, 580 A ND and 545 A HD.

Because this is a large Frame 9 drive, it belongs to a completely different physical and electrical class from compact variable-frequency drives. It is intended for large pumps, fans, compressors, conveyors, material-handling equipment, process machinery and other high-power industrial applications.

---

1. Basic Product Information

---

2. Product Introduction

The 20G1G3E595LNDNNNNN is a large industrial variable-frequency drive designed for motors requiring hundreds of horsepower.

Its main purpose is to control the speed and operating characteristics of a large AC motor rather than allowing the motor to operate only at a fixed speed.

In a large industrial system, motor speed is rarely required to remain at 100% all the time. A pump may need to operate at different flow rates, a fan may need to respond to changing airflow requirements, and a conveyor may need to accelerate gradually and operate at different production speeds.

A high-power drive provides the electrical and control interface necessary to manage these changes.

The E595 configuration is positioned above the E545 rating and provides a higher power capacity. Its approximate ratings reach 700 HP Light Duty, 600 HP Normal Duty and 550 HP Heavy Duty.

This makes it appropriate for large industrial machinery where motor current and mechanical load are substantially higher than those encountered by small and medium-size drives.

---

3. Product Series

The PowerFlex 755 family is intended for industrial applications where motor control requirements go beyond simple start/stop operation.

The PowerFlex 755T-oriented architecture adds advanced power-conversion characteristics for applications where input power quality and large-drive performance are important.

---

4. Main Electrical Parameters

---

5. Duty Rating Explanation

The three power ratings should not be regarded as interchangeable.

For this model, the approximate ratings are:

The Normal Duty rating of approximately 600 HP is particularly important when comparing this model with other large industrial drives.

For a Heavy Duty application, the allowable motor rating is lower because the drive has to accommodate more demanding torque and overload conditions.

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

---

6. Dimensions and Weight

Because the 20G1G3E595LNDNNNNN is a large Frame 9 floor-mounted packaged drive, its physical size is substantially greater than that of compact PowerFlex models.

The final physical dimensions and shipping weight can vary according to enclosure, cabinet arrangement, options, cooling configuration and factory-installed equipment.

For product planning, the following values should therefore be treated as approximate reference values.

For an actual installation, the physical dimensions should be checked against the exact cabinet drawing for the complete catalog number.

This is especially important because a large Frame 9 drive is not normally handled in the same manner as a small wall-mounted inverter.

---

7. Physical Design

The 20G1G3E595LNDNNNNN is designed as a large floor-mounted drive assembly.

The high current capacity requires substantial power-conversion hardware and thermal management.

Compared with a small variable-frequency drive, the unit requires significantly more:

• Cabinet space
• Ventilation
• Electrical clearance
• Power-cable capacity
• Grounding infrastructure
• Mechanical support
• Installation planning
• Transportation capability

The large frame also allows the power section, control section and cooling system to be arranged for high-power industrial operation.

---

8. Variable-Speed Operation

The most basic function of the drive is variable-speed motor control.

Instead of supplying the motor with a fixed-frequency electrical supply at all times, the drive changes the electrical output according to the required operating speed.

For example, a large fan may operate at a reduced speed during low-demand periods.

A large pump can similarly operate at different speeds depending on the required flow.

A conveyor can be accelerated gradually and then maintained at a controlled production speed.

This flexibility is one of the main reasons large industrial facilities use variable-frequency drives.

---

9. Controlled Acceleration

Large motors can produce substantial mechanical and electrical stress during starting.

Direct starting can cause:

• High starting current
• Mechanical shock
• Coupling stress
• Gearbox loading
• Belt stress
• Conveyor shock
• Process disturbances

The drive can provide a controlled acceleration profile.

The motor can gradually increase speed rather than immediately reaching operating speed.

This is especially useful for large rotating equipment with substantial inertia.

---

10. Controlled Deceleration

The drive can also control the motor during stopping.

A controlled deceleration sequence can reduce mechanical shock and improve the stability of the machine.

However, a large rotating load can return energy to the drive during deceleration.

For high-inertia machinery, the braking arrangement must therefore be designed according to:

• Motor size
• Load inertia
• Deceleration time
• Number of stops per hour
• Required stopping performance
• Regenerative energy

---

11. Low-Harmonic Operation

One of the important characteristics of the 20G1G3E595LNDNNNNN is its low-harmonic active-front-end configuration.

Large variable-frequency drives can have a significant effect on an electrical distribution system.

The use of an active front end can improve input-current characteristics compared with conventional rectifier arrangements.

This is particularly useful in facilities containing many large motors and other sensitive electrical equipment.

Typical concerns in large facilities include:

• Harmonic current
• Transformer loading
• Power quality
• Electrical interference
• Distribution-system capacity
• Generator compatibility
• Overall plant electrical performance

The low-harmonic architecture is therefore an important feature for large industrial installations.

---

12. Product Applications

12.1 Large Pump Systems

The drive is well suited to large industrial pump applications.

Large pumps are frequently required to operate at different flow rates.

Instead of running the pump continuously at full speed, the motor speed can be adjusted according to the process requirement.

Potential applications include:

• Water treatment
• Industrial water circulation
• Cooling-water systems
• Process-fluid systems
• Utility pumping
• Large irrigation systems
• Chemical-process pumping
• Industrial fluid transfer

The exact drive rating should be selected according to pump torque, motor current and operating range.

---

13. Large Fan Applications

Large fans and blowers can represent a significant electrical load.

A variable-frequency drive allows fan speed to be adjusted according to actual airflow requirements.

Typical applications include:

• Industrial ventilation
• Furnace systems
• Boiler-related equipment
• Dust collection
• Cooling systems
• Process ventilation
• Air-handling equipment
• Combustion-air systems

For fan applications, the drive can be sized according to the motor current and the required operating range.

---

14. Conveyor Applications

Large conveyors often require substantial motor power.

This is particularly true in:

• Mining
• Cement production
• Bulk material handling
• Ports
• Steel processing
• Aggregate handling
• Large manufacturing facilities

The drive can provide controlled acceleration and adjustable operating speed.

This is useful when the conveyor needs to start with material already on the belt.

---

15. Mining Applications

High-power variable-frequency drives are widely applicable to large mining machinery.

Potential applications include:

• Ore conveyors
• Material transfer systems
• Mine ventilation
• Large pumps
• Crushers
• Processing equipment
• Bulk-material handling systems

Mining equipment can impose severe mechanical loads, so Heavy Duty requirements and braking requirements should be evaluated carefully.

---

16. Compressor Applications

Large compressors can require significant starting torque and careful speed control.

The drive can provide controlled acceleration and variable-speed operation when the compressor design supports variable-speed drive operation.

Potential applications include:

• Industrial air compressors
• Process compressors
• Gas-related machinery
• Refrigeration systems
• Industrial process equipment

Compressor selection requires additional engineering because not every compressor should be operated across the same speed range.

---

17. Material-Handling Applications

Large material-handling systems often require controlled motor speed and torque.

The drive can be applied to:

• Conveyors
• Transfer systems
• Lifting equipment
• Bulk-material systems
• Large handling machinery
• Industrial production systems

For lifting or regenerative applications, braking and feedback requirements become particularly important.

---

18. Process Machinery

The drive can also be used in large continuous-process equipment.

Examples include:

• Mixing equipment
• Rolling machinery
• Extrusion equipment
• Large production machinery
• Processing lines
• Industrial machinery
• Material-processing equipment

The ability to change motor speed allows the drive to participate directly in process control.

---

19. Product Advantages

High Power Rating

The primary advantage of the E595 configuration is its high power capacity.

At approximately 700 HP Light Duty and 600 HP Normal Duty, the model is intended for very large motors.

This makes it suitable for applications that are beyond the practical range of compact variable-frequency drives.

---

High Current Capability

The approximate Normal Duty current rating of 580 A provides substantial current capacity for large three-phase motors.

The Heavy Duty rating remains approximately 545 A, making it suitable for demanding industrial loads.

---

600 V Class

The 600 V class is well suited to large industrial motors.

Higher voltage allows large motor power to be delivered without requiring proportionally higher current.

This is useful when designing electrical distribution systems for large machinery.

---

Low-Harmonic Input

The active-front-end configuration is an important advantage where power quality is a concern.

It is particularly relevant to large industrial facilities where multiple high-power drives can operate simultaneously.

---

Variable-Speed Control

The drive can adapt motor speed to the actual production requirement.

This can improve process flexibility and may reduce unnecessary full-speed operation.

---

Controlled Starting

Large motors can be started more smoothly than with a simple direct-on-line starting method.

This can reduce mechanical stress on connected equipment.

---

Controlled Stopping

The motor can be decelerated according to the required process profile.

This is useful for large rotating machinery where abrupt stopping would create excessive mechanical stress.

---

Industrial-Scale Construction

The Frame 9 architecture is designed for large industrial installations.

The physical construction provides the space necessary for high-power components, cooling systems and electrical connections.

---

20. Product Advantages Summary

---

21. Five Related Models in the Same Series

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

They should not be treated as automatic replacements because the voltage, current, frame, duty rating, input configuration and physical construction must be matched to the application.

The 20G1G3E545LNDNNNNN is especially relevant when comparing the E595 with the previous lower-power rating.

The E595 provides a higher power level and moves into the larger Frame 9 physical construction.

---

22. Detailed Same-Series Comparison

The exact dimensions and weight of the E650 and E710 configurations should be confirmed from the actual enclosure configuration before engineering a cabinet or transportation arrangement.

---

23. Five Other Popular Models from the Same Brand

The following five models represent other commonly encountered drive products from the same brand.

They cover considerably smaller power ranges and therefore should not be regarded as direct substitutes for the E595.

---

24. PowerFlex 525 Comparison

---

25. PowerFlex 753 Comparison

---

26. E595 Compared with E545

The 20G1G3E545LNDNNNNN and 20G1G3E595LNDNNNNN are particularly useful models to compare because they occupy adjacent high-power application ranges.

The main difference is the increased current and power capability of the E595 configuration.

The physical frame also increases from Frame 8 to Frame 9, so the E595 requires additional consideration for cabinet space, transportation, floor loading and installation.

---

27. Application Selection

When selecting the E595 for an actual project, the following parameters should be considered together.

---

28. Installation Considerations

The 20G1G3E595LNDNNNNN is not a small plug-in component.

The installation should be planned as part of the overall electrical system.

Important considerations include:

Electrical Supply

The incoming electrical supply must match the drive’s voltage and current requirements.

The upstream protection system must also be designed for the drive installation.

Motor Connection

The motor cable must be correctly sized for the operating current and installation conditions.

Cable routing and grounding are particularly important for large variable-frequency drive systems.

Cooling

The drive produces heat during operation.

Adequate airflow and appropriate cabinet ventilation are therefore necessary.

Mechanical Installation

Because the complete drive assembly can weigh hundreds of kilograms, the installation structure and floor must be capable of supporting the equipment.

Service Access

Adequate front and service clearance should be provided.

Large drives require practical access for inspection, maintenance and replacement of components.

---

29. Typical Industrial Industries

---

30. Product Advantages in Practical Use

---

31. Five Closely Related High-Power Models

---

32. Five Other Popular Models

---

33. Model Selection by Motor Size

This table is intended as a general product-class comparison rather than a substitute for drive sizing.

---

34. Key Parameters at a Glance

---

35. Overall Product Description

The 20G1G3E595LNDNNNNN is a large-frame industrial AC drive intended for applications where the motor power is measured in hundreds of horsepower.

Its 600 V AC input class, Frame 9 construction, and approximately 690 A Light Duty / 580 A Normal Duty / 545 A Heavy Duty current ratings place it in the high-power category.

The approximate motor ratings of 700 HP Light Duty, 600 HP Normal Duty and 550 HP Heavy Duty provide a broad application range for large industrial machinery.

The low-harmonic active-front-end configuration is particularly useful in facilities where electrical power quality is important.

The drive can be used in large pump systems, fans, blowers, conveyors, compressors, mining equipment, material-handling systems and continuous-process machinery.

Its variable-speed capability allows the motor to operate according to the actual process requirement instead of running continuously at a fixed speed.

For large rotating machinery, controlled acceleration and deceleration can also help reduce mechanical shock and improve machine operation.

The physical size is an important factor. This is a Frame 9 floor-mounted drive, not a compact panel-mounted inverter. A complete installation can occupy substantial floor space and may weigh approximately 700 kg or more, depending on the exact enclosure and factory configuration.

When selecting or replacing this model, the most important parameters are input voltage, motor current, duty rating, motor power, load characteristics, speed range, braking requirements, feedback requirements, communication requirements, enclosure, dimensions and weight.

---

36. Final Technical Summary

In short, the 20G1G3E595LNDNNNNN is a very high-power 600 V, Frame 9 variable-frequency drive intended for large industrial motors. Its approximate 700 HP Light Duty, 600 HP Normal Duty and 550 HP Heavy Duty ratings make it suitable for large pumps, fans, conveyors, compressors and other heavy industrial equipment. Its low-harmonic input architecture, large current capacity, variable-speed control and industrial floor-mounted construction make it particularly suited to large-scale motor-control systems.

For exact cabinet fabrication, replacement purchasing, transportation or installation, the dimensions and weight should be confirmed against the specific physical configuration, because enclosure and option selections can change the final dimensions and total weight.