Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schaffner |
| Series | ECOsine FN3416 |
| Model | FN3416-110-35 |
| Product Type | Passive Harmonic Filter |
| Nominal Voltage | 3 × 380–500 VAC ±10% |
| Operating Frequency | 50 Hz ±1 Hz |
| Rated Current | 110 A |
| Load Power @ 400 VAC / 50 Hz | 55 kW |
| Load Power @ 500 VAC / 50 Hz | 75 kW |
| Power Loss @ 25°C / 50 Hz | 546 W |
| Connection Variant | -35 |
| Weight | Approx. 50 kg |
| Protection Category | IP20 |
| Cooling | Internal fan cooling |
| Overload Capability | 1.6 × rated current for 1 minute, once per hour |
| Ambient Temperature | −25°C to +45°C full operation |
| Derating Range | +45°C to +55°C |
| High-Potential Test | P→E 2500 VAC / 2 sec |
| Typical Efficiency | >98% |
| Application | Three-phase power conversion / motor drives |
Schaffner’s current datasheet lists the FN3416-110-35 at 55 kW for 400 VAC and 75 kW for 500 VAC, with 546 W calculated power loss and approximately 50 kg weight.
Product Introduction
The Schaffner FN3416-110-35 is a high-power passive harmonic filter from the ECOsine Economy FN3416 family. It is designed for three-phase power-conversion equipment, particularly motor drives using six-pulse diode or SCR rectifier front ends. Its purpose is to reduce harmonic current generated by the drive and improve the electrical behavior of the installation upstream of the converter.
The Schaffner FN3416-110-35 operates on 3 × 380–500 VAC systems at 50 Hz and is rated for 110 A. Schaffner’s selection table associates this particular filter with approximately 55 kW at 400 VAC and 75 kW at 500 VAC motor-drive load power. The manufacturer specifically cautions that filter selection should be based on system voltage and motor-drive power rather than simply selecting by current rating.
The FN3416-110-35 is intended as a load-applied harmonic filter, meaning it is installed in the power path serving the nonlinear load. Schaffner states that the family can help meet harmonic-current requirements associated with EN 61000-3-12 and IEEE 519, subject to the specified system conditions and installation parameters.
FN3416-110-35
Main Features & Field Considerations
Passive harmonic reduction
The reduces current harmonics produced by six-pulse rectifier loads. Lower harmonic current can reduce unnecessary loading and heating in upstream transformers, cables, and distribution equipment.
Designed for motor drives
The filter is particularly suited to standard three-phase motor drives with six-pulse rectifier front ends. It can be used with diode or SCR rectifiers, although SCR operation can produce different harmonic performance depending on firing angle.
High-power installation
At approximately 50 kg, this is cabinet-level power equipment rather than a small DIN-rail EMC filter. Mechanical support, conductor sizing, ventilation, and service access need to be considered during installation.
Thermal management
The uses internal fan cooling. The manufacturer’s specifications allow full operation to +45°C, with derating above that temperature.
Replacement checks
Before replacing an -110-35, verify:
- Three-phase system voltage
- 50 Hz operating frequency
- Motor-drive power
- Existing DC-link choke configuration
- Filter connection arrangement
- Cable cross-section
- Cabinet ventilation
- Fan condition
- Ambient temperature
- Upstream harmonic requirements
Engineering Considerations
The most important point is not to substitute this filter based only on the “110” rating. Schaffner explicitly states that the should be selected according to system voltage and motor-drive load power because the filter reduces RMS input current.
The family is intended for equipment with a six-pulse rectifier front end. If the drive has a different rectifier topology, active front end, or unusual DC-link arrangement, the expected harmonic performance can differ.
For troubleshooting, check:
- Input/output phase connections
- Drive load power
- Filter temperature
- Internal fan operation
- Terminal tightness
- Harmonic-current measurements
- Drive rectifier condition
- Upstream transformer and supply impedance
Procurement Note
For , the complete model number is important because the final “-35” identifies a specific connection/mechanical configuration within the family. Schaffner’s documentation lists the unit as a 110 A, 55–75 kW class passive harmonic filter, depending on the operating voltage.
For a plant replacement, match , system voltage, drive power, connection arrangement, and cabinet cooling requirements before installation.
