Lauritz Knudsen etaSMART R - APFC Controller, 1 CT, 415V AC | 16 Step for Contactor Switching | Size - 144*144 | Programmed for Capacitor Switching/Alarm
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Lauritz Knudsen etaSMART R - APFC Controller, 1 CT, 415V AC | 16 Step for Contactor Switching | Size - 144*144 | Programmed for Capacitor Switching/Alarm
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- Specifications
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen EasyLogic APFC Relay CS90905 is a premium-grade, high-precision Automatic Power Factor Correction (APFC) controller designed for large-scale industrial electrical systems that require maximum accuracy, flexibility, & advanced capacitor bank management. Engineered for demanding industrial, commercial, & infrastructure applications, this intelligent relay optimizes power factor, improves energy efficiency, minimizes electrical losses, & reduces utility penalties through precise contactor-based capacitor switching.
The relay utilizes a single Current Transformer (1 CT) input configuration, enabling simplified installation while delivering accurate measurement of load current, reactive power demand, & power factor. By continuously monitoring system conditions, the controller automatically switches capacitor bank stages ON or OFF as required to maintain the desired power factor & ensure optimal electrical system performance.
Equipped with an advanced 16-step capacitor switching configuration, the EasyLogic APFC Relay CS90905 offers the highest correction resolution within the EasyLogic range. Compared to 4-step, 6-step, 8-step, 12-step, & 14-step controllers, the 16-step architecture provides ultra-fine compensation granularity, superior load matching accuracy, smoother switching performance, & exceptional responsiveness in highly dynamic electrical environments.
This enhanced correction capability makes the relay ideal for large industrial plants, energy-intensive manufacturing operations, utility distribution networks, infrastructure projects, & complex electrical systems where load fluctuations occur frequently & precise reactive power management is critical.
The relay intelligently manages capacitor bank operation to prevent under-compensation, overcompensation, unnecessary switching cycles, & capacitor bank imbalance. This helps improve capacitor life, reduce maintenance requirements, enhance system reliability, & maximize overall operational efficiency.
Designed specifically for contactor-based switching systems, the controller provides dependable performance while maintaining accurate power factor correction across a wide range of operating conditions.
The device features a user-friendly interface that allows quick setup, efficient monitoring, & simple parameter configuration. Users can adjust settings such as target power factor, capacitor stage sequence, switching delays, response times, alarm settings, & protection parameters according to application requirements.
With continuous real-time monitoring & intelligent control capabilities, the relay adapts to changing load conditions automatically, helping maintain stable system operation, optimized energy consumption, & improved power quality without constant operator intervention.
As part of the Lauritz Knudsen EasyLogic product range, the APFC Relay CS90905 combines advanced functionality, industrial-grade reliability, ease of integration, & cost-effective operation, making it a preferred choice for panel builders, contractors, system integrators, & industrial users.
The compact panel-mountable enclosure enables easy integration into APFC panels, capacitor bank systems, switchboards, electrical distribution panels, & power quality management installations.
This APFC relay is an ideal choice for applications requiring maximum precision power factor correction, energy optimization, enhanced electrical efficiency, & reliable long-term operation in large & complex electrical systems.
How the Mechanism Works
The APFC relay functions by:
• Continuously monitoring load current using a single CT input
• Measuring system power factor in real time
• Calculating reactive power requirements automatically
• Switching capacitor stages ON or OFF as required
• Maintaining the desired target power factor
• Providing ultra-precise 16-step capacitor bank control
• Preventing under-compensation & overcompensation
• Optimizing capacitor bank utilization
• Reducing electrical losses & utility penalties
• Improving overall power quality & system efficiency
It serves as an intelligent automatic control solution for advanced capacitor bank management & high-accuracy power factor correction.
Electrical Configuration
• Product Type: EasyLogic APFC Relay
• Model: CS90905
• CT Input Configuration: 1 CT
• Capacitor Control Steps: 16 Steps
• Switching Technology: Contactor-Based Switching
• Application Type: Automatic Power Factor Correction
• Installation Type: Panel Mounting
• Control Function: Automatic Capacitor Bank Management
• Primary Purpose: Power Factor Improvement & Energy Optimization
Construction & Design
Designed for reliability & advanced system control:
• Compact panel-mountable design
• Industrial-grade electronic architecture
• User-friendly display & configuration interface
• Clear monitoring & programming menus
• Durable long-life construction
• Easy integration into APFC panels
• Simplified commissioning & setup
• Space-saving installation design
• Reliable operation under highly dynamic loads
• Low maintenance requirements
Protection & Control Benefits
Helps optimize & protect electrical systems by:
• Improving power factor automatically
• Reducing reactive power demand
• Preventing utility penalty charges
• Avoiding overcompensation conditions
• Minimizing unnecessary capacitor switching
• Improving capacitor bank utilization
• Supporting stable electrical operation
• Enhancing power quality performance
• Reducing electrical losses
• Extending equipment service life
Purpose & Function
• Automatically maintains target power factor
• Provides maximum correction precision within the EasyLogic range
• Delivers ultra-fine correction for highly dynamic loads
• Reduces electricity costs & demand penalties
• Optimizes capacitor bank efficiency
• Improves electrical network stability
• Minimizes manual supervision requirements
• Supports large-scale industrial applications
• Maximizes overall energy savings
• Improves long-term system reliability & performance
Application Domains
• Large APFC Panels & Multi-Stage Capacitor Bank Systems
• Heavy Industrial Plants & Manufacturing Facilities
• Infrastructure & Utility Power Distribution Systems
• Commercial Complexes with High Load Variation
• Energy-Intensive Industries
• Advanced Power Quality Management Systems
• Industrial Energy Management Installations
• Large Electrical Distribution Networks
• Utility & Infrastructure Projects
• High-Capacity Electrical Optimization Systems
Key Features
• Lauritz Knudsen EasyLogic APFC relay
• Model: CS90905
• 1 CT input for simplified installation
• 16-step capacitor switching control (maximum precision range)
• Designed for contactor-based switching systems
• Continuous monitoring of power factor & reactive power
• Enables ultra-high precision correction for complex load systems
• Configurable target power factor settings
• Adjustable capacitor stage sequence
• Adjustable switching delay parameters
• Minimizes energy losses & penalty charges
• Prevents overcompensation & excessive switching cycles
• Optimizes capacitor utilization & system efficiency
• Suitable for large & highly dynamic industrial systems
• User-friendly interface for easy setup
• Compact & rugged panel-mountable design
• Industrial-grade reliability
Applications
• Large APFC panels & multi-stage capacitor bank systems
• Heavy industrial plants & manufacturing facilities
• Infrastructure & utility power distribution systems
• Commercial complexes with high load variation
• Energy-intensive industries
• Advanced power quality management & optimization systems
• Industrial energy management installations
• High-capacity electrical distribution networks
• Utility infrastructure projects
• Commercial & industrial power optimization systems
FAQs
1. What is an APFC relay used for?
Ans: It automatically controls capacitor banks to maintain optimal power factor, improve energy efficiency, reduce electrical losses, & avoid utility penalties.
2. What does 1 CT mean?
Ans: It means the relay uses one Current Transformer (CT) input to monitor system load, reactive power demand, & power factor for automatic correction.
3. What does 16-step control indicate?
Ans: It means the relay can control up to sixteen capacitor stages, providing the highest level of precision & flexibility in power factor correction within the EasyLogic range.
4. Why choose a 16-step relay?
Ans: A 16-step relay offers maximum correction accuracy, superior load matching, smoother capacitor switching, & exceptional performance in large systems with rapidly changing load conditions.
5. What type of switching does it support?
Ans: The EasyLogic APFC Relay CS90905 supports contactor-based switching, making it suitable for conventional APFC panels & capacitor bank systems.
6. Where is this relay typically used?
Ans: It is commonly used in large industrial APFC panels, manufacturing facilities, utility projects, commercial complexes, & high-capacity electrical distribution systems.
7. What advantages does 16-step control provide?
Ans: The higher number of switching stages enables ultra-fine compensation granularity, optimal capacitor utilization, better load matching, reduced switching stress, improved power quality, & maximum energy efficiency.
8. What protection & optimization benefits does this relay provide?
Ans: It helps prevent overcompensation, minimizes unnecessary switching cycles, reduces capacitor bank imbalance, improves power quality, lowers operating costs, enhances energy efficiency, & supports long-term reliable system operation.
Overview
| Dimension 1 | 144 |
|---|---|
| Dimension 2 | 144 |
| Voltage input | 415 V |
| No. of CT inupts | 1 |
| No. of steps (For Contactor switching) | 16 |
| No. of steps (For Thyristor switching) | 0 |
| Discount Percentage | Between 0-10 % |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.
Reviews
Description
About the Product
The Lauritz Knudsen EasyLogic APFC Relay CS90905 is a premium-grade, high-precision Automatic Power Factor Correction (APFC) controller designed for large-scale industrial electrical systems that require maximum accuracy, flexibility, & advanced capacitor bank management. Engineered for demanding industrial, commercial, & infrastructure applications, this intelligent relay optimizes power factor, improves energy efficiency, minimizes electrical losses, & reduces utility penalties through precise contactor-based capacitor switching.
The relay utilizes a single Current Transformer (1 CT) input configuration, enabling simplified installation while delivering accurate measurement of load current, reactive power demand, & power factor. By continuously monitoring system conditions, the controller automatically switches capacitor bank stages ON or OFF as required to maintain the desired power factor & ensure optimal electrical system performance.
Equipped with an advanced 16-step capacitor switching configuration, the EasyLogic APFC Relay CS90905 offers the highest correction resolution within the EasyLogic range. Compared to 4-step, 6-step, 8-step, 12-step, & 14-step controllers, the 16-step architecture provides ultra-fine compensation granularity, superior load matching accuracy, smoother switching performance, & exceptional responsiveness in highly dynamic electrical environments.
This enhanced correction capability makes the relay ideal for large industrial plants, energy-intensive manufacturing operations, utility distribution networks, infrastructure projects, & complex electrical systems where load fluctuations occur frequently & precise reactive power management is critical.
The relay intelligently manages capacitor bank operation to prevent under-compensation, overcompensation, unnecessary switching cycles, & capacitor bank imbalance. This helps improve capacitor life, reduce maintenance requirements, enhance system reliability, & maximize overall operational efficiency.
Designed specifically for contactor-based switching systems, the controller provides dependable performance while maintaining accurate power factor correction across a wide range of operating conditions.
The device features a user-friendly interface that allows quick setup, efficient monitoring, & simple parameter configuration. Users can adjust settings such as target power factor, capacitor stage sequence, switching delays, response times, alarm settings, & protection parameters according to application requirements.
With continuous real-time monitoring & intelligent control capabilities, the relay adapts to changing load conditions automatically, helping maintain stable system operation, optimized energy consumption, & improved power quality without constant operator intervention.
As part of the Lauritz Knudsen EasyLogic product range, the APFC Relay CS90905 combines advanced functionality, industrial-grade reliability, ease of integration, & cost-effective operation, making it a preferred choice for panel builders, contractors, system integrators, & industrial users.
The compact panel-mountable enclosure enables easy integration into APFC panels, capacitor bank systems, switchboards, electrical distribution panels, & power quality management installations.
This APFC relay is an ideal choice for applications requiring maximum precision power factor correction, energy optimization, enhanced electrical efficiency, & reliable long-term operation in large & complex electrical systems.
How the Mechanism Works
The APFC relay functions by:
• Continuously monitoring load current using a single CT input
• Measuring system power factor in real time
• Calculating reactive power requirements automatically
• Switching capacitor stages ON or OFF as required
• Maintaining the desired target power factor
• Providing ultra-precise 16-step capacitor bank control
• Preventing under-compensation & overcompensation
• Optimizing capacitor bank utilization
• Reducing electrical losses & utility penalties
• Improving overall power quality & system efficiency
It serves as an intelligent automatic control solution for advanced capacitor bank management & high-accuracy power factor correction.
Electrical Configuration
• Product Type: EasyLogic APFC Relay
• Model: CS90905
• CT Input Configuration: 1 CT
• Capacitor Control Steps: 16 Steps
• Switching Technology: Contactor-Based Switching
• Application Type: Automatic Power Factor Correction
• Installation Type: Panel Mounting
• Control Function: Automatic Capacitor Bank Management
• Primary Purpose: Power Factor Improvement & Energy Optimization
Construction & Design
Designed for reliability & advanced system control:
• Compact panel-mountable design
• Industrial-grade electronic architecture
• User-friendly display & configuration interface
• Clear monitoring & programming menus
• Durable long-life construction
• Easy integration into APFC panels
• Simplified commissioning & setup
• Space-saving installation design
• Reliable operation under highly dynamic loads
• Low maintenance requirements
Protection & Control Benefits
Helps optimize & protect electrical systems by:
• Improving power factor automatically
• Reducing reactive power demand
• Preventing utility penalty charges
• Avoiding overcompensation conditions
• Minimizing unnecessary capacitor switching
• Improving capacitor bank utilization
• Supporting stable electrical operation
• Enhancing power quality performance
• Reducing electrical losses
• Extending equipment service life
Purpose & Function
• Automatically maintains target power factor
• Provides maximum correction precision within the EasyLogic range
• Delivers ultra-fine correction for highly dynamic loads
• Reduces electricity costs & demand penalties
• Optimizes capacitor bank efficiency
• Improves electrical network stability
• Minimizes manual supervision requirements
• Supports large-scale industrial applications
• Maximizes overall energy savings
• Improves long-term system reliability & performance
Application Domains
• Large APFC Panels & Multi-Stage Capacitor Bank Systems
• Heavy Industrial Plants & Manufacturing Facilities
• Infrastructure & Utility Power Distribution Systems
• Commercial Complexes with High Load Variation
• Energy-Intensive Industries
• Advanced Power Quality Management Systems
• Industrial Energy Management Installations
• Large Electrical Distribution Networks
• Utility & Infrastructure Projects
• High-Capacity Electrical Optimization Systems
Key Features
• Lauritz Knudsen EasyLogic APFC relay
• Model: CS90905
• 1 CT input for simplified installation
• 16-step capacitor switching control (maximum precision range)
• Designed for contactor-based switching systems
• Continuous monitoring of power factor & reactive power
• Enables ultra-high precision correction for complex load systems
• Configurable target power factor settings
• Adjustable capacitor stage sequence
• Adjustable switching delay parameters
• Minimizes energy losses & penalty charges
• Prevents overcompensation & excessive switching cycles
• Optimizes capacitor utilization & system efficiency
• Suitable for large & highly dynamic industrial systems
• User-friendly interface for easy setup
• Compact & rugged panel-mountable design
• Industrial-grade reliability
Applications
• Large APFC panels & multi-stage capacitor bank systems
• Heavy industrial plants & manufacturing facilities
• Infrastructure & utility power distribution systems
• Commercial complexes with high load variation
• Energy-intensive industries
• Advanced power quality management & optimization systems
• Industrial energy management installations
• High-capacity electrical distribution networks
• Utility infrastructure projects
• Commercial & industrial power optimization systems
FAQs
1. What is an APFC relay used for?
Ans: It automatically controls capacitor banks to maintain optimal power factor, improve energy efficiency, reduce electrical losses, & avoid utility penalties.
2. What does 1 CT mean?
Ans: It means the relay uses one Current Transformer (CT) input to monitor system load, reactive power demand, & power factor for automatic correction.
3. What does 16-step control indicate?
Ans: It means the relay can control up to sixteen capacitor stages, providing the highest level of precision & flexibility in power factor correction within the EasyLogic range.
4. Why choose a 16-step relay?
Ans: A 16-step relay offers maximum correction accuracy, superior load matching, smoother capacitor switching, & exceptional performance in large systems with rapidly changing load conditions.
5. What type of switching does it support?
Ans: The EasyLogic APFC Relay CS90905 supports contactor-based switching, making it suitable for conventional APFC panels & capacitor bank systems.
6. Where is this relay typically used?
Ans: It is commonly used in large industrial APFC panels, manufacturing facilities, utility projects, commercial complexes, & high-capacity electrical distribution systems.
7. What advantages does 16-step control provide?
Ans: The higher number of switching stages enables ultra-fine compensation granularity, optimal capacitor utilization, better load matching, reduced switching stress, improved power quality, & maximum energy efficiency.
8. What protection & optimization benefits does this relay provide?
Ans: It helps prevent overcompensation, minimizes unnecessary switching cycles, reduces capacitor bank imbalance, improves power quality, lowers operating costs, enhances energy efficiency, & supports long-term reliable system operation.
Overview
| Dimension 1 | 144 |
|---|---|
| Dimension 2 | 144 |
| Voltage input | 415 V |
| No. of CT inupts | 1 |
| No. of steps (For Contactor switching) | 16 |
| No. of steps (For Thyristor switching) | 0 |
| Discount Percentage | Between 0-10 % |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.