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Allen-Bradley 20G1G3C367LNDNNNNN PowerFlex 755TL Low Harmonic AC Drive
1. Product Overview
The 20G1G3C367LNDNNNNN is a high-power low-harmonic AC variable frequency drive designed for large industrial motor-control applications.
It belongs to the PowerFlex 755TL family and is designed around a 400 VAC three-phase industrial power supply.
The drive has a 367 A Normal Duty current rating and is built in a large Frame 8 floor-mounted cabinet configuration.
Unlike a compact machine-level inverter, this model is intended for large industrial installations where motor capacity, electrical power quality, mechanical robustness, thermal management, and centralized drive installation are important considerations.
The drive uses an Active Front End architecture to provide controlled input-current performance and low-harmonic operation.
This makes it particularly suitable for industrial plants where large variable-speed motors are operated together with other electrical equipment and where the effect of drive-generated harmonics on the electrical distribution system needs to be controlled.
The 20G1G3C367LNDNNNNN is an air-cooled, Type 1/IP21, floor-mounted drive.
The catalog configuration is associated with standard EMI protection, a door-mounted Human Interface Module, and TotalFORCE control functionality.
The 367 A Normal Duty rating corresponds to approximately 200 kW in the referenced 400 VAC configuration, while the same frame family can support different duty classifications and current ratings depending on the selected model.
This makes the product particularly suitable for large pumps, fans, conveyors, process equipment, material-handling systems, compressors, production machinery, and other high-power motor applications.
The drive is physically large.
Its published cabinet dimensions are approximately 2132 mm in height, 1200 mm in width, and 675 mm in depth, with an approximate weight of 861 kg.
Because of its size and weight, the product should be treated as a complete industrial drive cabinet rather than a small standalone frequency converter.
2. Product Identification
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Family | PowerFlex 755TL |
| Product Type | Low Harmonic AC Drive |
| Model | 20G1G3C367LNDNNNNN |
| Input Voltage | 400 VAC |
| Input Phase | Three-phase |
| Normal Duty Current | 367 A |
| Normal Duty Power | Approx. 200 kW |
| Light Duty Current | Approx. 460 A |
| Light Duty Power | Approx. 250 kW |
| Heavy Duty Current | Approx. 302 A |
| Heavy Duty Power | Approx. 160 kW |
| Frame Size | Frame 8 |
| Cooling | Air cooled |
| Input Technology | Active Front End |
| Harmonic Performance | Low harmonic |
| Enclosure | Type 1 / IP21 |
| Mounting | Floor mount |
| EMI Protection | Standard EMI protection |
| Human Interface | Door-mounted HIM |
| Control Platform | TotalFORCE |
| Cabinet Height | Approx. 2132 mm |
| Cabinet Width | Approx. 1200 mm |
| Cabinet Depth | Approx. 675 mm |
| Dimensions | Approx. 2132 × 1200 × 675 mm |
| Approximate Weight | 861 kg |
| Installation Type | Floor-standing industrial cabinet |
| Typical Environment | Controlled indoor industrial environment |
| Application Category | Large industrial motor control |
The catalog information identifies the model as a PowerFlex 755TL air-cooled low-harmonic drive with 400 VAC three-phase input, Frame 8 construction, Type 1/IP21 enclosure, floor mounting, and 367 A Normal Duty capacity.
3. Main Technical Parameters
| Technical Parameter | Detailed Specification |
|---|---|
| Model | 20G1G3C367LNDNNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755TL |
| Drive Category | Low Harmonic AC Variable Frequency Drive |
| Input Voltage | 400 VAC |
| Input Frequency | Industrial AC supply frequency |
| Input Phase | 3 Phase |
| Normal Duty Current | 367 A |
| Normal Duty Power | Approx. 200 kW |
| Light Duty Current | 460 A |
| Light Duty Power | Approx. 250 kW |
| Heavy Duty Current | 302 A |
| Heavy Duty Power | Approx. 160 kW |
| Input Topology | Active Front End |
| Harmonic Design | Low harmonic |
| Cooling | Air cooled |
| Enclosure | Type 1 / IP21 |
| Mounting | Floor mount |
| Frame | Frame 8 |
| EMI Protection | Standard EMI protection |
| HIM | Door-mounted Human Interface Module |
| Control | TotalFORCE control platform |
| Cabinet Height | Approx. 2132 mm |
| Cabinet Width | Approx. 1200 mm |
| Cabinet Depth | Approx. 675 mm |
| Overall Dimensions | Approx. 2132 × 1200 × 675 mm |
| Weight | Approx. 861 kg |
| Installation Area | Large industrial electrical room / drive room |
| Typical Motor Class | Large industrial motors |
| Typical Applications | Pumps, fans, conveyors, process machinery, material handling |
| Cooling Requirement | Adequate ventilation and unobstructed airflow |
| Mounting Requirement | Stable floor-mounted installation |
The 367 A rating is particularly important because it identifies the Normal Duty operating class of this model.
For applications with varying load conditions, the Light Duty and Heavy Duty ratings should also be considered when selecting the drive.
The same Frame 8 platform provides different current and power ratings depending on duty classification. The documented configuration identifies 460 A / 250 kW as Light Duty, 367 A / 200 kW as Normal Duty, and 302 A / 160 kW as Heavy Duty.
4. Dimensions and Weight
| Mechanical Parameter | Value |
|---|---|
| Model | 20G1G3C367LNDNNNNN |
| Height | Approx. 2132 mm |
| Width | Approx. 1200 mm |
| Depth | Approx. 675 mm |
| Overall Size | Approx. 2132 × 1200 × 675 mm |
| Weight | Approx. 861 kg |
| Installation | Floor mounted |
| Cabinet Type | Large industrial cabinet |
| Cooling | Air cooled |
The physical size is one of the most important differences between this model and compact variable frequency drives.
At approximately 2.13 m high, 1.20 m wide, and 0.675 m deep, the drive requires dedicated floor space.
The approximately 861 kg weight also means that transportation, unloading, positioning, lifting, floor loading, and installation access must be considered before the equipment is delivered.
The installation area should provide enough room for electrical connections, ventilation, inspection, maintenance, and safe access.
The cabinet should not be installed in a location where airflow can be blocked by nearby walls, cable trays, equipment, stored materials, or other obstructions.
5. Product Introduction
The 20G1G3C367LNDNNNNN is designed for industrial facilities that require high-capacity variable-speed motor control combined with low-harmonic input performance.
A conventional motor connected directly to an AC supply normally operates at a relatively fixed speed determined by the supply frequency and motor characteristics.
A variable frequency drive changes this operating condition by controlling the electrical frequency and voltage supplied to the motor.
As a result, motor speed can be adjusted according to the actual requirements of the process.
This is useful in many industrial systems.
A conveyor may need to accelerate gradually and then run at a controlled production speed.
A pump may need to increase or decrease flow according to process demand.
A fan may need to adjust airflow.
A large process machine may require different operating speeds during different production stages.
A variable frequency drive provides the electrical control required for these operating conditions.
The 20G1G3C367LNDNNNNN takes this concept into the high-power industrial range.
Its 367 A Normal Duty rating allows it to control large motors, while the large Frame 8 cabinet provides the physical infrastructure required for high-power electrical components.
6. PowerFlex 755TL Series
The PowerFlex 755TL series is designed around low-harmonic, high-performance variable-speed motor control.
The “TL” designation is associated with the low-harmonic drive configuration.
The major technical difference between this type of drive and a conventional rectifier-input drive is the use of an Active Front End.
The Active Front End provides greater control over the relationship between the incoming AC power and the drive’s internal DC bus.
This architecture is especially useful in large industrial installations where electrical power quality is an important engineering consideration.
The series is intended for demanding applications rather than simple small-machine speed control.
Its typical installation environment includes large manufacturing facilities, process plants, utilities, material-handling systems, production lines, and other industrial installations where high motor power is required.
7. Active Front End Technology
The Active Front End is one of the most important characteristics of the 20G1G3C367LNDNNNNN.
In a conventional drive, the incoming AC supply is converted into DC power through a rectifier arrangement.
This process can introduce harmonic currents into the electrical system.
In a large industrial plant, multiple drives operating at the same time can make this effect more significant.
The Active Front End uses controlled power-switching technology to provide more controlled input-current behavior.
This is the reason low-harmonic drives are often considered for installations with demanding power-quality requirements.
The result is a drive architecture that is better suited to large industrial electrical networks where harmonic performance needs to be managed as part of the overall system design.
8. Low-Harmonic Operation
Low-harmonic operation can be especially valuable in large industrial facilities.
Many industrial plants contain transformers, generators, motors, control systems, instrumentation, computers, communication equipment, and multiple variable frequency drives.
The electrical behavior of each major nonlinear load contributes to the overall condition of the power distribution system.
Reducing harmonic current can help improve the electrical environment of the installation.
This can be important when the facility has strict power-quality requirements or when a large number of high-power drives operate simultaneously.
The 20G1G3C367LNDNNNNN is therefore not simply a high-current motor controller.
Its low-harmonic architecture is an important part of its system-level value.
9. Normal Duty, Light Duty and Heavy Duty
The model’s 367 A rating should not be viewed in isolation.
The Frame 8 configuration provides different current capacities depending on the required duty classification.
| Duty Classification | Current | Approx. Power | Application Concept |
|---|---|---|---|
| Light Duty | 460 A | 250 kW | Applications with less demanding overload requirements |
| Normal Duty | 367 A | 200 kW | General industrial continuous-duty applications |
| Heavy Duty | 302 A | 160 kW | Applications requiring greater overload capability |
The 20G1G3C367LNDNNNNN is the 367 A Normal Duty configuration.
This distinction is important when selecting a drive for applications with high starting torque, frequent acceleration, rapid speed changes, shock loading, or extended overload conditions.
A motor should not be selected solely by horsepower or kilowatt value.
The motor’s actual rated current and the mechanical load profile should be evaluated.
10. Product Advantages
10.1 High-Power Motor Control
The 367 A Normal Duty rating makes this drive suitable for large industrial motors.
It can be applied to equipment where compact variable frequency drives are not capable of providing sufficient current.
This makes the model suitable for large pumps, fans, conveyors, process machinery, and material-handling systems.
10.2 Low-Harmonic Input Design
The Active Front End is a major advantage in facilities where harmonic performance matters.
The low-harmonic design helps the drive interact with the incoming electrical system in a more controlled manner.
This can be valuable in large facilities with multiple high-power drives.
10.3 Large Industrial Cabinet Construction
The Frame 8 floor-mounted cabinet provides a practical structure for high-power equipment.
The large cabinet provides space for power electronics, cooling equipment, control equipment, electrical connections, and other required components.
This type of construction is better suited to centralized industrial installations than compact machine-mounted drives.
10.4 TotalFORCE Control
The drive incorporates TotalFORCE control technology.
This control architecture is intended to provide advanced motor-control functionality for demanding industrial applications.
It allows the drive to be used in applications where speed, torque, acceleration, deceleration, and overall motor behavior need to be controlled accurately.
10.5 Door-Mounted Human Interface
The configuration includes a door-mounted Human Interface Module.
A door-mounted interface is useful for large floor-mounted drive cabinets because operators and maintenance personnel can access drive information without needing to open the main cabinet.
This can simplify operational monitoring and routine troubleshooting.
10.6 Air-Cooled Construction
The air-cooled design provides a practical method of removing heat generated by the drive’s power electronics.
For high-power drives, thermal management is critical.
Adequate airflow helps maintain the appropriate operating temperature of the power components.
The installation environment should therefore provide sufficient ventilation and should not block the cooling airflow.
10.7 Type 1 / IP21 Enclosure
The Type 1/IP21 configuration is suitable for controlled indoor industrial installations.
It provides a level of protection appropriate to an enclosed industrial electrical environment.
It should not be treated as a waterproof or outdoor washdown enclosure.
Where the installation environment contains excessive moisture, conductive dust, corrosive chemicals, or other aggressive conditions, additional environmental protection may be required.
11. Typical Applications
11.1 Large Conveyor Systems
Large conveyors often require controlled acceleration and variable operating speeds.
The 20G1G3C367LNDNNNNN can be used where the conveyor motor is within the drive’s current and duty requirements.
Variable-speed control allows the conveyor to operate at different production speeds.
Controlled acceleration can also reduce sudden mechanical stress on belts, gearboxes, couplings, and other mechanical components.
11.2 Large Pumps
Pumping systems are one of the most common applications for variable frequency drives.
A pump does not necessarily need to operate at maximum speed at all times.
The drive can adjust motor speed according to process demand.
This can provide better process control and can reduce unnecessary motor operation at full speed when the application permits variable-speed operation.
11.3 Large Industrial Fans
Fans and blowers frequently require adjustable airflow.
A variable frequency drive can change fan speed according to the required airflow.
This can be particularly useful in ventilation, process cooling, combustion-air systems, industrial extraction, and other large airflow applications.
11.4 Material Handling
Large material-handling systems often require controlled motor operation.
The drive can provide adjustable speed and controlled acceleration.
This can be useful in bulk-material handling, production conveyors, transfer systems, and other industrial transportation equipment.
11.5 Process Machinery
Large process machines may require a motor to operate at different speeds during different stages of a production cycle.
The drive can provide controlled motor speed and torque.
This allows the motor to become part of the overall automated process rather than operating independently at a fixed speed.
11.6 Manufacturing Equipment
Large manufacturing machinery can use variable-speed drives for motors associated with rollers, conveyors, pumps, fans, compressors, mixers, and other rotating equipment.
The drive’s high current capacity makes it suitable for large production equipment.
11.7 Utility Systems
Industrial facilities commonly contain large utility motors for water circulation, ventilation, cooling, compressed-air support equipment, and other plant services.
Variable-speed operation can provide more flexible control of these systems.
12. Advantages in Industrial Automation
The 20G1G3C367LNDNNNNN can be integrated into larger automated control systems.
Instead of treating the motor as a simple on/off device, the drive allows motor speed and operating behavior to become part of the control process.
This is particularly useful in production lines.
A production line may require a conveyor to accelerate gradually, maintain a fixed speed during normal operation, and slow down at the end of a process sequence.
The drive can provide this type of controlled motor behavior.
It can also be used in coordinated systems where multiple motors operate at different speeds.
This can improve process flexibility.
13. Advantages for Process Control
Variable-speed motor control can provide direct benefits to process control.
A pump can follow a changing flow requirement.
A fan can follow a changing airflow requirement.
A conveyor can follow a changing production rate.
A machine can use different motor speeds for different processing stages.
The drive therefore provides a link between the electrical system and the mechanical process.
The actual performance depends on the motor, mechanical load, control system, sensors, and process design.
14. Advantages for Energy Management
Variable-speed operation can provide energy-saving opportunities in applications where the load requirement changes over time.
This is especially relevant to centrifugal pumps and fans.
If a process does not require full motor speed, reducing the motor speed can reduce the power required by the rotating equipment.
However, energy savings are application dependent.
The actual result depends on the mechanical system, operating schedule, motor characteristics, process requirements, and control strategy.
The drive should therefore be considered an important tool for energy optimization rather than assuming a fixed energy-saving percentage.
15. Installation Requirements
Because the 20G1G3C367LNDNNNNN is a large 861 kg cabinet, installation planning is extremely important.
The floor must be capable of supporting the equipment.
The delivery route must be capable of accommodating a cabinet approximately 1200 mm wide and more than 2.1 m high.
The lifting and positioning method should be planned before delivery.
The installation location should provide adequate access for electrical connections and future maintenance.
The cooling airflow path should remain unobstructed.
The surrounding temperature should remain within the applicable operating range.
The electrical installation must also be designed for the drive’s high-current operation.
16. Maintenance Considerations
The air-cooled construction means that airflow and cooling-system maintenance are important.
Dust accumulation can reduce airflow.
Blocked ventilation openings can increase operating temperature.
Cooling fans should be inspected according to the applicable maintenance schedule.
Electrical connections should also be inspected as part of a suitable preventive-maintenance program.
The surrounding environment should be checked for excessive dust, moisture, corrosive substances, and abnormal vibration.
The large cabinet should have adequate service clearance.
Because this is high-power electrical equipment, maintenance should only be performed by appropriately trained and qualified personnel using the applicable electrical safety procedures.
17. Five Related Models in the Same Series
The following models are closely related to the 20G1G3C367LNDNNNNN and belong to the same broad PowerFlex 755 high-power low-harmonic drive family.
| Model | Series | Current Class | Approx. Power Class | Frame | Cooling | Dimensions | Weight |
|---|---|---|---|---|---|---|---|
| 20G1G3C302LNDNNNNN | PowerFlex 755TL | 302 A | Approx. 160 kW HD | Frame 8 | Air cooled | Approx. 2132 × 1200 × 675 mm | Approx. 861 kg |
| 20G1G3C367LNDNNNNN | PowerFlex 755TL | 367 A | Approx. 200 kW ND | Frame 8 | Air cooled | Approx. 2132 × 1200 × 675 mm | Approx. 861 kg |
| 20G1G3C460LNDNNNNN | PowerFlex 755TL | 460 A | Approx. 250 kW LD | Frame 8 | Air cooled | Approx. 2132 × 1200 × 675 mm | Approx. 861 kg |
| 20G1G3C540LNDNNNNN | PowerFlex 755TL | 540 A class | Approx. 315 kW class | Large-frame configuration | Air cooled | Configuration dependent | Configuration dependent |
| 20G1G3C585LNDNNNNN | PowerFlex 755TL | 585 A class | Approx. 315 kW class | Large-frame configuration | Air cooled | Configuration dependent | Configuration dependent |
The 302 A, 367 A, and 460 A models are especially useful for direct comparison because they represent different duty capacities within the same Frame 8 low-harmonic platform.
The 302 A configuration is appropriate where heavy-duty operation is more important than maximum continuous current.
The 367 A configuration provides the Normal Duty rating associated with the requested model.
The 460 A configuration provides a higher Light Duty current capacity.
The 540 A and 585 A models extend the same general high-power concept into larger current ranges.
The exact cabinet arrangement for each catalog number should be checked against the required option configuration before procurement.
18. Same-Series Comparison Table
| Parameter | 20G1G3C302LNDNNNNN | 20G1G3C367LNDNNNNN | 20G1G3C460LNDNNNNN | 20G1G3C540LNDNNNNN | 20G1G3C585LNDNNNNN |
|---|---|---|---|---|---|
| Series | PowerFlex 755TL | PowerFlex 755TL | PowerFlex 755TL | PowerFlex 755TL | PowerFlex 755TL |
| Current | 302 A | 367 A | 460 A | 540 A class | 585 A class |
| Duty | Heavy Duty | Normal Duty | Light Duty | Large-frame configuration | Large-frame configuration |
| Approx. Power | 160 kW | 200 kW | 250 kW | Approx. 315 kW class | Approx. 315 kW class |
| Input | 400 VAC, 3 Phase | 400 VAC, 3 Phase | 400 VAC, 3 Phase | 400 VAC class | 400 VAC class |
| AFE | Yes | Yes | Yes | Yes | Yes |
| Harmonic Type | Low harmonic | Low harmonic | Low harmonic | Low harmonic | Low harmonic |
| Cooling | Air cooled | Air cooled | Air cooled | Air cooled | Air cooled |
| Frame | 8 | 8 | 8 | Large frame | Large frame |
| Enclosure | Type 1 / IP21 | Type 1 / IP21 | Type 1 / IP21 | Configuration dependent | Configuration dependent |
| Dimensions | Approx. 2132 × 1200 × 675 mm | Approx. 2132 × 1200 × 675 mm | Approx. 2132 × 1200 × 675 mm | Configuration dependent | Configuration dependent |
| Weight | Approx. 861 kg | Approx. 861 kg | Approx. 861 kg | Configuration dependent | Configuration dependent |
The three primary Frame 8 ratings illustrate how the same basic drive platform can be selected according to the application’s duty requirement.
The 20G1G3C367LNDNNNNN sits between the Heavy Duty 302 A configuration and the Light Duty 460 A configuration.
19. Five Other Popular Models from the Same Brand
The following models are useful alternatives or related products when considering different motor sizes and application levels.
| Model | Product Family | General Application | Current / Power Class | Input Class | Cooling | Dimensions | Weight |
|---|---|---|---|---|---|---|---|
| 20F1AND302JA0NNNNN | PowerFlex 753 | Industrial motor control | 302 A class | 400 V class | Air cooled / configuration dependent | Configuration dependent | Configuration dependent |
| 20F1AND248JN0NNNNN | PowerFlex 753 | Large industrial machinery | 248 A class | 400 V class | Air cooled / configuration dependent | Configuration dependent | Configuration dependent |
| 25B-B011N104 | PowerFlex 525 | Compact industrial machinery | Approx. 11 A class | 400 V class configuration | Air cooled | Compact | Configuration dependent |
| 25B-B024N104 | PowerFlex 525 | Small and medium machinery | Approx. 24 A class | 400 V class configuration | Air cooled | Compact | Configuration dependent |
| 25B-E019N104 | PowerFlex 525 | General-purpose machine control | Approx. 19 A class | 400 V class configuration | Air cooled | Compact | Configuration dependent |
These models cover substantially different application ranges.
The PowerFlex 753 models are closer to the 755 platform in terms of industrial motor-control requirements.
The PowerFlex 525 models are much more compact and are generally more appropriate for smaller machines and lower-current motor applications.
The 20G1G3C367LNDNNNNN is intended for a much higher power level and requires considerably more installation space.
20. Product Family Comparison
| Feature | 20G1G3C367LNDNNNNN | 20F1AND302JA0NNNNN | 20F1AND248JN0NNNNN | 25B-B011N104 | 25B-B024N104 |
|---|---|---|---|---|---|
| Product Family | PowerFlex 755TL | PowerFlex 753 | PowerFlex 753 | PowerFlex 525 | PowerFlex 525 |
| Application Level | High-power industrial | Industrial | Industrial | Compact machine | Compact machine |
| Current Level | 367 A | 302 A class | 248 A class | 11 A class | 24 A class |
| Low-Harmonic AFE | Yes | Configuration dependent | Configuration dependent | No equivalent high-power AFE architecture | No equivalent high-power AFE architecture |
| Frame | 8 | Configuration dependent | Configuration dependent | Compact | Compact |
| Mounting | Floor mount | Configuration dependent | Configuration dependent | Compact installation | Compact installation |
| Cooling | Air cooled | Configuration dependent | Configuration dependent | Air cooled | Air cooled |
| Enclosure | Type 1 / IP21 | Configuration dependent | Configuration dependent | Configuration dependent | Configuration dependent |
| Dimensions | Approx. 2132 × 1200 × 675 mm | Configuration dependent | Configuration dependent | Compact / configuration dependent | Compact / configuration dependent |
| Weight | Approx. 861 kg | Configuration dependent | Configuration dependent | Configuration dependent | Configuration dependent |
| Typical Motor Size | Large motor | Large industrial motor | Medium / large industrial motor | Small motor | Small / medium motor |
This comparison shows why the 20G1G3C367LNDNNNNN should not be selected simply because another drive has a similar catalog number.
The application level is very different.
The 755TL model is designed for large industrial installations where high current and low-harmonic input performance are important.
The smaller models are intended for machines where a large floor-mounted cabinet would be unnecessary.
21. Advantages Compared with Smaller Drives
The most obvious advantage of the 20G1G3C367LNDNNNNN is its ability to control much larger motor loads.
A small drive can be ideal for a small conveyor, pump, fan, or machine.
However, once the motor current becomes several hundred amperes, a compact drive is no longer suitable.
The large Frame 8 cabinet provides the necessary electrical and thermal infrastructure for this class of application.
The low-harmonic AFE architecture also gives this model a system-level advantage when the electrical installation has strict power-quality requirements.
The door-mounted interface provides convenient access to operating information.
The TotalFORCE control platform provides advanced motor-control capabilities for demanding industrial applications.
22. Application Advantages
| Application | Main Advantage |
|---|---|
| Large pump | Variable flow and motor-speed control |
| Large fan | Adjustable airflow |
| Conveyor | Controlled acceleration and speed |
| Material handling | Smooth motor operation |
| Process machinery | Adjustable speed and torque |
| Manufacturing equipment | Integration with automated processes |
| Industrial utility systems | Flexible motor operation |
| Large production lines | Coordinated motor control |
| Heavy industrial equipment | High current capacity |
| Power-sensitive installations | Low-harmonic input architecture |
23. Selection Considerations
Before selecting the 20G1G3C367LNDNNNNN, the following factors should be reviewed.
Motor Rated Current
The motor’s nameplate current should be compared with the drive rating.
The drive should not be selected only from nominal horsepower.
Motor current is one of the most important selection parameters.
Duty Requirement
Determine whether the application is Light Duty, Normal Duty, or Heavy Duty.
A conveyor with high starting torque may have very different requirements from a centrifugal fan.
Acceleration Requirements
Applications with high inertia may require more torque during acceleration.
This should be evaluated during drive selection.
Operating Speed Range
The required minimum and maximum motor speeds should be determined.
Some applications require a very wide speed range, while others operate within a relatively narrow range.
Environmental Conditions
Temperature, humidity, dust, corrosive substances, vibration, and installation altitude should be considered.
Cabinet Space
The approximate dimensions of 2132 × 1200 × 675 mm must be included in the mechanical design.
Weight
The approximate 861 kg weight must be considered when planning transportation and installation.
Ventilation
The air-cooled design requires an appropriate ventilation environment.
Electrical System
The incoming electrical system must be suitable for the 400 VAC three-phase drive configuration.
Harmonic Requirements
If the facility has strict power-quality requirements, the low-harmonic AFE architecture becomes an important consideration.
24. Maintenance and Service
Regular inspection is important for high-power industrial drives.
The cooling system should be kept clean.
Air passages should remain unobstructed.
Cooling fans should be inspected according to the appropriate maintenance schedule.
Electrical connections should be checked as required by the installation’s preventive-maintenance program.
The cabinet interior should be kept free from excessive dust and contamination.
The installation environment should also be monitored for excessive humidity and abnormal temperature.
Because the drive contains high-energy electrical components, service work requires appropriate electrical isolation and safety procedures.
25. Mechanical Installation
The cabinet should be installed on a suitable floor or structural base.
The floor should be capable of supporting the approximately 861 kg equipment weight together with any associated installation hardware.
The delivery route should be checked before the equipment arrives.
Doorways, elevators, ramps, loading areas, and maintenance access routes should all be considered.
The cabinet height of approximately 2132 mm is particularly important for transportation and installation planning.
The width of approximately 1200 mm also requires more installation space than a compact wall-mounted drive.
Adequate clearance should be provided around the cabinet for ventilation, inspection, electrical connection, and maintenance.
26. Electrical Installation
The 400 VAC three-phase input should be connected through an appropriately designed industrial electrical system.
The feeder must be sized for the actual operating requirements.
Protection equipment must be coordinated with the drive and upstream electrical system.
Grounding and bonding must be properly designed.
Motor cables should be selected according to the motor current, installation method, cable length, environmental conditions, and applicable electrical standards.
The control wiring should be separated from high-power wiring where appropriate to reduce unwanted electrical interference.
27. Why the 20G1G3C367LNDNNNNN Is a High-Capacity Industrial Drive
Several characteristics distinguish this model from smaller variable-frequency drives.
First, the drive has a 367 A Normal Duty rating.
Second, it uses a large Frame 8 cabinet.
Third, it uses an Active Front End architecture.
Fourth, it is designed for low-harmonic operation.
Fifth, it is floor mounted.
Sixth, it weighs approximately 861 kg.
Seventh, the cabinet is approximately 2.13 m high.
These characteristics clearly place the model in the large industrial-drive category.
It is intended for installations where a compact inverter is not adequate for the motor size or system requirements.
28. Overall Product Advantages
| Advantage | Detailed Description |
|---|---|
| High current rating | 367 A Normal Duty capacity |
| High power | Approx. 200 kW Normal Duty class |
| Low harmonic | Active Front End input architecture |
| Large motor compatibility | Designed for large industrial motors |
| Frame 8 construction | Suitable for high-power installations |
| Air cooling | Practical thermal-management system |
| Floor mounted | Suitable for centralized drive rooms |
| Type 1/IP21 | Suitable for controlled indoor environments |
| TotalFORCE control | Advanced motor-control platform |
| Door-mounted HIM | Convenient local access |
| Industrial automation | Suitable for integration into production systems |
| Process control | Supports variable-speed operation |
| Energy management | Can support speed-based energy optimization |
| Large-system integration | Suitable for centralized industrial applications |
29. Final Technical Summary
The 20G1G3C367LNDNNNNN is a high-power PowerFlex 755TL low-harmonic AC drive designed for demanding industrial motor-control applications.
Its primary electrical configuration is 400 VAC, three-phase operation with a 367 A Normal Duty current rating.
The corresponding Normal Duty power class is approximately 200 kW.
The drive also provides different duty classifications within the same Frame 8 platform, including approximately 460 A / 250 kW Light Duty and 302 A / 160 kW Heavy Duty ratings.
The Active Front End architecture is a major technical characteristic of the product.
It is designed to provide low-harmonic input operation and improved control of the drive’s interaction with the electrical supply.
The drive uses an air-cooled system and a Type 1/IP21 enclosure.
It is floor mounted and intended for a controlled indoor industrial environment.
The approximate cabinet dimensions are 2132 mm high, 1200 mm wide, and 675 mm deep.
The approximate weight is 861 kg.
This makes the unit substantially larger and heavier than compact variable-frequency drives.
The installation therefore requires proper mechanical planning, transportation planning, floor loading evaluation, ventilation, electrical connection planning, and service access.
The drive is particularly suitable for large conveyors, pumps, fans, process equipment, material-handling systems, manufacturing machinery, and other large industrial motor applications.
Its low-harmonic architecture is especially relevant to facilities where power quality is an important consideration.
The high current rating makes it suitable for large motor loads.
The large Frame 8 cabinet provides a practical platform for high-power electrical equipment.
The door-mounted Human Interface Module provides convenient access to operating information.
The TotalFORCE control platform supports advanced motor-control requirements.
For equipment selection, the most important parameters to evaluate are motor rated current, required duty classification, overload requirements, acceleration requirements, operating speed range, mechanical load characteristics, input voltage, environmental conditions, harmonic requirements, cabinet space, ventilation, and installation weight.
The 20G1G3C367LNDNNNNN is therefore best understood as a large industrial low-harmonic drive rather than a general-purpose compact inverter.
It is particularly appropriate when a facility needs high-capacity variable-speed motor control together with controlled input-current characteristics and a dedicated industrial floor-mounted cabinet.
30. Quick Reference Specification
| Item | Specification |
|---|---|
| Model | 20G1G3C367LNDNNNNN |
| Brand | Allen-Bradley |
| Series | PowerFlex 755TL |
| Drive Type | Low Harmonic AC Drive |
| Input Voltage | 400 VAC |
| Input | 3 Phase |
| Normal Duty Current | 367 A |
| Normal Duty Power | Approx. 200 kW |
| Light Duty Current | 460 A |
| Light Duty Power | Approx. 250 kW |
| Heavy Duty Current | 302 A |
| Heavy Duty Power | Approx. 160 kW |
| Input Technology | Active Front End |
| Harmonic Type | Low harmonic |
| Cooling | Air cooled |
| Frame | 8 |
| Enclosure | Type 1 / IP21 |
| Mounting | Floor mount |
| EMI Protection | Standard EMI protection |
| Local Interface | Door-mounted HIM |
| Control | TotalFORCE |
| Height | Approx. 2132 mm |
| Width | Approx. 1200 mm |
| Depth | Approx. 675 mm |
| Dimensions | Approx. 2132 × 1200 × 675 mm |
| Weight | Approx. 861 kg |
| Main Applications | Pumps, fans, conveyors, process machinery, material handling, manufacturing |
| Application Level | Large industrial systems |
| Main Technical Feature | High-current, low-harmonic variable-speed motor control |
The 20G1G3C367LNDNNNNN is a strong fit for large industrial motor applications where current capacity, low-harmonic operation, advanced motor control, and centralized floor-mounted construction are more important than compact size.
Its combination of 400 VAC three-phase input, 367 A Normal Duty capacity, Active Front End technology, Frame 8 construction, air cooling, and large cabinet design gives it a very different application profile from small machine-level drives.
For a large industrial installation, the physical dimensions and 861 kg weight are just as important as the electrical ratings and should be included in the initial equipment-layout and installation planning.