Ecosine Max FN3473

Ecosine Max, 400 VAC 60 Hz Economy Passive Harmonic Filters


Ecosine Max, 400 VAC 60 Hz Economy Passive Harmonic Filters

  • Demonstrate best cost-performance ratio
  • Achieve 8% THDi for diode rectifier without Ldc, and 5% THDi for diode rectifier with 4% Ldc
  • Best-in-class partial load performance
  • Most compact open panel design for cabinet integration
  • Reliable and robust
  • Plug and play, ready to use

Features and Benefits

Schaffner ecosine harmonic filters represent an economical solution to the challenge of load-applied harmonics mitigation in three-phase power systems. With a plug-and-play approach and more compact dimensions than comparable products, they can be quickly installed and easily commissioned. They increase the reliability and service life of electric installations, help utilize electric sytem capacity better, and are the key to meet Power Quality standards such as IEEE 519. Ecosine filters reshape your distorted current back to the desired sinusoidal waveform. Schaffner ecosine filters can be applied to virtually any kind of power electronics with front-end six-pulse rectifiers, 3-phase diode or thyristor bridges, where harmonic current distortion needs to be reduced to defined limits.

Typical Applications

Equipment with front-end six-pulse rectifier
Motor drives
Factory automation equipment
Water/wastewater treatment facilities
Fan and pump applications
HVAC installations
Mission-critical processes
DC fast chargers

Technical Specifications

Nominal operating voltage

3x380 VAC to 415 VAC ±10%

Overload capability

1.6x rated current for 1 minute, once per hour

Operating frequency

60 Hz ±1 Hz

Total harmonic current distortion THDi*

<8% @ rated power for drives without Ldc

<5% @ rated power for drives equipped with 4% Ldc

Total demand distortion TDD

According to IEEE 519

Nominal motor drive input power rating

280 to 480 HP

High potential test voltage

P -> E 2520 VAC (1s)

Earthing system



>99% for rated voltage and power

Overvoltage category

OV III (IEC 60664-1)

Temperature range (operation and storage)

–25°C to +40°C fully operational

+40°C to +70°C derated operation****

–25°C to +85°C transport and storage


External cooling***

Protection category

IP 00

Flammability corresponding to

UL 94 V-2

Design corresponding to

Filter: UL 61800-5-1, EN 61800-5-1

Chokes: EN 60076-6


100 kA (UL approved)

MTBF (Mil-HB-217F)

>200,000 h @ 40°C/400 V

* System requirements: THDv <2%, line voltage unbalance <1% Note: performance specifications in this brochure refer to six-pulse diode rectifiers. SCR rectifier front-ends will produce different results, dependent upon the firing angle of the thyristors. ** External UL-rated fuses required. Please consult the user manual. *** Please check the inlet air flow required for cooling table further in this document and the user manual. **** Iderated = Inominal*SQRT((Tmax-Tamb)/(Tmax-Tnominal)) = Inominal*SQRT((70°C-Tamb)/30°C)

Typical electrical schematic


Approvals & Compliances

CE Label
RoHS Label
UL Recognized Label (USA)
UKCA Label