PFI System (Power Factor Improvement System)

Power Factor Improvement (PFI) Systems – Capacitor Bank Panel (5 kVAr to 1000+ kVAr) | Integrated Power & Engineering

Automatic & Manual Capacitor Bank Panels

Integrated Power & Engineering

Integrated Power & Engineering designs, manufactures, and supplies Power Factor Improvement (PFI) Systems engineered to enhance electrical efficiency, reduce reactive power demand, and stabilize voltage in industrial and commercial power networks. Our PFI solutions are developed to support utility compliance, reduced system losses, and optimized transformer and feeder utilization—making them a critical component of modern electrical infrastructure in Bangladesh.

Low power factor leads to higher current flow, increased losses in cables and transformers, voltage drops, overheating, and potential utility penalties. A properly engineered PFI system ensures optimal power factor correction, improved system performance, and lower operating costs over the equipment lifecycle.

Product Overview: Power Factor Improvement Systems

A PFI system improves power factor by compensating reactive power drawn by inductive loads such as motors, pumps, compressors, chillers, elevators, welding machines, and HVAC systems. By introducing capacitor banks into the system, reactive current is reduced, resulting in:

  • Lower current flow in cables and transformers
  • Reduced system losses and heat generation
  • Improved voltage stability
  • Increased usable capacity of existing electrical infrastructure

Integrated Power & Engineering supplies both Manual PFI and Automatic PFI systems, engineered based on site load profile, variation pattern, and target power factor.

Technical Specifications

Reactive Power Rating

  • 5 kVAr to 1000+ kVAr
  • Custom-built capacities based on load analysis and correction requirement

System Voltage & Frequency

  • 415V AC, 3-phase, 50Hz
  • Other system voltages available on request

System Configuration

  • Manual PFI System
  • Automatic PFI System

Capacitor Type

  • Heavy-duty, low-loss, self-healing capacitors
  • Dry-type or oil-filled (as per duty and application)

Control System (Automatic PFI)

  • Microprocessor-based PFI relay with:
    • Real-time power factor monitoring
    • Programmable correction steps
    • Alarm and protection functions

Step Configuration

  • 1-step to 16-step or higher
  • Step sizing optimized for load variation and stability

Enclosure & Protection

  • Indoor / Outdoor construction
  • IP42 to IP54
  • Powder-coated steel enclosure (stainless steel optional)

Standards & Compliance

Designed and manufactured in accordance with:

  • IEC 60831
  • IS 13340 / IS 13341
  • Utility and project-specific technical requirements

Key Design Features & Advantages

Automatic Power Factor Correction

Relay-controlled capacitor switching maintains stable power factor during load fluctuations, preventing over- or under-compensation.

Energy Efficiency & Loss Reduction

Lower reactive current reduces I²R losses in cables, transformers, and switchgear, improving overall system efficiency.

Electrical Safety & Reliability

Designed with discharge resistors, protection coordination, and optional surge protection to ensure safe and reliable operation.

Modular & Expandable Design

Capacitor steps and total kVAr can be expanded to support future load growth or system upgrades.

Long Service Life

Low-loss capacitors and proper thermal design reduce heat stress and enhance operational longevity.

Smart Monitoring (Optional)

Provision for SCADA/BMS integration, data logging, and alarm monitoring for centralized supervision.

Typical Applications

  • Industrial Plants & Manufacturing Units
  • Commercial Complexes & Shopping Malls
  • Hospitals, Universities & Campuses
  • Hotels, Airports & Metro/Rail Infrastructure
  • Cold Storage & Warehousing Facilities
  • Utility Distribution & Substations
  • Any installation with inductive electrical loads

Why Choose Integrated Power & Engineering?

  • Load-based, project-specific PFI system design
  • High-quality capacitors and control components
  • Local engineering, commissioning, and service support in Bangladesh
  • Proven performance across industrial and commercial sectors
  • Complete solution from engineering to after-sales support
How can I identify if my facility requires a PFI system? +
If your installation has a low or fluctuating power factor—commonly due to motors, HVAC, or heavy inductive loads—a PFI system is recommended to reduce losses and potential utility penalties.
What is the difference between Manual and Automatic PFI systems? +
Manual PFI uses fixed capacitor steps suitable for constant loads, while Automatic PFI adjusts capacitor steps automatically based on load variation, making it ideal for dynamic industrial and commercial systems.
How is the required kVAr capacity calculated? +
kVAr sizing depends on connected load, existing power factor, target power factor, and transformer capacity, determined through load study and system analysis.
What target power factor is generally recommended? +
The target power factor is usually selected close to unity, depending on utility requirements and system stability considerations.
Can a PFI system reduce electricity bills? +
Yes. By reducing reactive power flow and system losses, a PFI system can lower operating costs and help avoid penalty charges imposed by utilities.
Is a PFI system safe for sensitive electrical equipment? +
Yes. When properly designed with correct step sizing, protection, and discharge mechanisms, PFI systems operate safely within the electrical network.
Can the PFI panel be expanded in the future? +
Yes. Our PFI systems are modular, allowing additional capacitor steps or higher kVAr capacity to be added as load increases.
Do you provide installation and commissioning support in Bangladesh? +
Yes. Integrated Power & Engineering provides complete support including design, manufacturing, testing, installation guidance, commissioning, and after-sales service locally.

Phone: +880 1713117974, +880 1717180660
E-mail: info@substationequipments.com, faruqipe36@gmail.com.com
Address: 165/7 West Rajashion, Birulia Road, Savar, Dhaka, Bangladesh.

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