NHP Harmonic Filtering Solutions from Schaffner can broadly be categorised into the following groups:
- ECOsineTM Active Harmonic Filters
- ECOsineTM Passive Harmonic Filters
- Line Filters and Reactors
- Output Filters and Load Reactors including Sine Wave and dv/dt Filters
NHP Schaffner Harmonic Filtering Brochure
ECOsineTM Active
The ECOsineTM Active eliminates harmonic currents up to the 50th harmonic, improving power quality and reducing reactive power usage costs. The ECOsineTM Active’s flexible design allows different size systems to connect in parallel achieving greater compensation current. These filters can be connected either load or line side, however to combine units in parallel the CT’s corresponding to the AHF must be connected load side.
Once configured with just a few clicks, the preset line current will be permanently measured and all harmonics and phase displacements actively compensated. To achieve this, the ECOsineTM Active calculates the appropriate compensation currents within microseconds, which are then generated and fed into the network. Remote monitoring via PLC or BMS is possible via Modbus over RS485 interface.
Some of the key features and benefits of the ECOsineTM Active include:
- Ultra-fast: Responds to disturbances in less than 300µs and eliminates them before they can cause damage
- Super-compact: Each unit provides the highest performance in the most compact package
- Optimised for maintenance: The central modules in the 200 to 300A industrial models can be removed in less than 15 minutes.
- Suitable for industrial use: With the IP54 protection class the ECOsineTM Active is resistant to dust and other environmental influences
- Numerous Options: The ECOsineTM Active range covers specifications from 30 to 300A and 400 to 480V in either 3 or 4-wire technology.
- Adaptive: ECOsineTM Active compensates for individual disturbance patterns in a targeted manner and automatically adapts to changing network topologies.
Operating and Installation Instructions - ECOsine™ Active Harmonic Filters
Operating and Installation Instructions - External Fuse Protection
Modbus Data Type Definition - ECOsine™ Active Harmonic Filters
ECOsineTM
Schaffner ECOsineTM passive harmonic filters represent an economical solution to the challenge of load-applied harmonic mitigation in three-phase power systems. These filters are more commonly connected to individual loads in the plant rather than at the point of common coupling (PCC) since they’re application requires consistent loading for effective harmonic mitigation. Schaffner ECOsineTM harmonic filters are designed for the operation on the line side of power electronic equipment with 6-pulse rectifier front ends in balanced three-phase power systems.
Some of the key features and benefits of the ECOsineTM include:
- Compact dimensions
- Quick installation
- Easily commissioned
- Reduce harmonic currents to negligible levels (THID <5%)
User Manual - ECOsine™ Passive Harmonic Filters
Line Filters and Reactors
Three-phase line filter - FN 3400
- EMC filter for applications with high noise levels
- Integrated line reactor for low frequency interference and harmonics reduction
- Compact all-in-one solution for motor drives
- Significant increase of conducted immunity across a broad frequency spectrum
Three phase line reactor - RWK 212
Provision of 4% impedance- Reduction of mains harmonics
- Reduction commutation notches
- Protection of motor drive electronics
- Limitation of inrush currents
- Improvement of true power factor
Output Filters and Reactors
Output Filter - for motor drives - FN 510
- Reduction of drive output voltage dv/dt
- Restriction of overvoltages on motor cables
- Reduction of motor temperature
- Increase of motor service life
- Improvement of system reliability
Sine wave output filter for motor drives - FN 520
Smoothing of PWM drive output voltage - Efficient motor protection
- Increase of motor service life
- Reduction of audible motor noise
- Reduction of parasitic losses
- Improvement of system reliability
Sine wave and EMC output filter for motor drives with a voltage dc link - FN 530
Smoothing of PWM drive output voltage - Efficient motor protection
- Reduction of common-mode interferences on motor cables
- Improvement of EMC environment
- Elimination of motor bearing damages
- Possibility to use very long unshielded motor cables
- Improvement of system reliability
Universal sine wave output filter for motor drives - FN 5010
- Smoothing of PWM drive output voltage
- Efficient motor protection
- Increase of motor service life
- Reduction of audible motor noise
- Reduction of parasitic losses
- Improvement of system reliability
Sine wave output filter for high-speed motor drives - FN 5020
- Smoothing of PWM drive output voltage
- Suitable for motor frequencies up to 600Hz
- Increase service life of expensive high speed-motors
- Reduction of audible motor noise
- Improvement of system reliability
- Production up time for mission critical applications
Add on sine wave output filter module for common-mode voltage improvement - FN 5030
- Additional module for use with FN 5010 or FN 5020 sine wave filters only
- For motor frequencies up to 600Hz
- Reduction of common-mode interferences on motor cables
- Improvement of EMC environment
- Elimination of motor bearing damages
- Possibility to use very long unshielded motor cables
- Improvement of system reliability
Three-phase dv/dt reactor for efficient motor protection - RWK 305
- Reduction of drive output voltage dv/dt
- Reduction of motor temperature
- Increase of motor life
- Compact and economic open frame design
- Standard catalog reactors up to 1100A
- UL rated materials used
