Active Harmonic Filter AHF 100A 400V Wall Mounted Modular Unit for Data Center UPS Rooms

ND-AHF-100A-400V is a wall mounted unit rated 100A at 400V AC  built for data center. It removes harmonic current at the point where the non-linear load connects, so the distortion stops at the source instead of spreading through upstream switchgear, transformers and generators.

Battery-backed halls cannot tolerate neutral conductor heating, so this unit is sized around UPS rectifier and cooling drive loads rather than around the total connected capacity.

The unit measures the load current continuously and injects an equal and opposite compensation current, so the grid current returns to a near sinusoidal shape while the load keeps running unchanged. Reactive power compensation and three-phase unbalance correction can be enabled on the same hardware, which means one Active Harmonic Filter AHF can replace a combination of capacitor banks, detuned reactors and balancing equipment.

Main technical characteristics of this 100A 400V Active Harmonic Filter AHF:

• Adaptive ADALINE Self-Learning Control
  The controller learns the real grid and load impedance on site, so commissioning finishes without hand-tuning a parameter list for every installation.
• Selectable Compensation Modes
  Harmonic filtering, reactive power compensation and three-phase balancing can be enabled separately or together from one menu.
• Residual THDi Below 5%
  After compensation the grid current distortion is normally held under 5%.
• No Resonance with Capacitor Banks
  Because the unit injects current instead of switching capacitors, it cannot resonate with existing power factor correction banks.
• Integrated HMI with Event Log
  The LCD panel shows voltage, current, THDi, power factor and module status, with event records for fast diagnosis.
• Parallel Expansion up to Ten Units
  Up to ten units share one CT signal, so capacity grows with the plant and N+1 redundancy becomes possible.
• 24-Hour Full-Load Aging Run
  Every unit completes a full-load burn-in before packing, so early failures are screened at the factory rather than at your site.
• Closed Forced Ventilation Duct
  Heat sources sit inside a dedicated duct, separated from dust-prone areas, so the internal temperature of the enclosure stays low.

This Active Harmonic Filter AHF is normally installed on the following loads:

• Data centre white space and UPS rooms
• Server hall power distribution units
• Cooling plant chiller and pump drives
• IDC battery backup and switchgear rooms
• Colocation halls with mixed tenant loads

Reasons buyers select our Active Harmonic Filter AHF for projects in data centre UPS rooms:

• Manufacturer Scope
  We are a Shanghai based power quality manufacturer with our own R and D labs, production workshops and a full-function test bay, so the algorithms, firmware, hardware and cabinet structure are all developed in house.
• Full-Load Aging before Packing
  Every Active Harmonic Filter AHF runs a 24-hour full-load aging cycle and is inspected against its test record before shipment.
• Selection and Survey Support
  Our engineers review your harmonic measurement, calculate the required compensation current and issue a written selection report before you place an order.
• Response within 24 Working Hours
  Technical and commercial questions are answered within one working day, and remote commissioning runs over video call, email or WhatsApp.
• Project-Specific Engineering
  Capacity, voltage class, CT ratio, cabinet colour and communication protocol are configured against your single line diagram instead of being taken from a catalogue page.

Typical configuration of model ND-AHF-100-400-W. Voltage class, current rating, CT ratio and enclosure can be adapted to your single line diagram.

Common questions about this Active Harmonic Filter AHF from project engineers and distributors:

• Technical Support
  Lifetime free remote technical support for commissioning, troubleshooting and parameter configuration by video call, WhatsApp or email.
• Training Materials
  Complete operation manuals, wiring diagrams and parameter explanations are supplied so your engineers can run the unit independently.
• On-Site Service
  Where overseas on-site commissioning is required, engineers can be dispatched abroad; travel and service fees are quoted separately.
• Warranty
  A limited warranty applies, with the specific period and terms confirmed in the project contract.
• Response Time
  After-sales and technical enquiries are answered within 24 working hours.
• Spare Parts Supply
  After the warranty period, spare parts are supplied at reasonable cost for the full service life of the equipment.

Nengdu New Energy is a Shanghai based high-tech manufacturer focused on integrated research, production, sales and after-sales service of power quality improvement equipment. The product line covers AHF active filters, SVG static var generators, intelligent capacitors, reactive power controllers, capacitor contactors, voltage adjusters, smart composite switches, dynamic reactive regulators and matching energy storage systems.

Standardised production workshops, dedicated R and D laboratories and a full-function testing workshop support in-house development of every algorithm, software, hardware platform and cabinet structure. Customised power equipment and complete turnkey solutions are supplied, and ODM cooperation is available for partners who need their own branding.

Products hold CE, IEC, RoHS and ISO certification. Long-term partnerships with energy engineering distributors span Southeast Asia, the Middle East, Europe, America and Africa, with core cooperation in India, Germany and Saudi Arabia. Our engineering team provides on-site power quality testing and calculation, equipment replacement matching, programming and commissioning guidance, plus permanent remote after-sales assistance.

Send us your single line diagram, harmonic measurement or load list, and our engineers will calculate the required compensation current and confirm the matching Active Harmonic Filter AHF model for your site. Typical response time is within 24 working hours.