Product overview

A sine wave filter, driven by a PWM frequency converter, provides a sine wave output voltage within a switching frequency range of 2-8kHz. In the application of frequency converter drive, this filter can eliminate the problem of motor insulation failure and reduce electromagnetic interference by eliminating high dv/dt related to the output waveform of the frequency converter. Improve the performance and lifespan of the motor, extend the output distance of the frequency converter, up to a maximum of 3KM. To protect wires and cables, using a sine wave filter can prevent overvoltage problems in long lead driven motors. In other energy applications, such as wind turbines, inverters restore electricity to practical distribution systems through step-up transformers, which can allow the use of standard transformers. If the harmonic voltage distortion input to the transformer at full load and 60Hz is 5%, then the harmonic voltage distortion input to the motor at full load is generally 5%.

Product Applicatior

· Convert the PWM wave output by the frequency converter into a sine wave
· Reduce the eddy current loss and motor noise of the motor, reduce the pulse current on the output cable and in the motor, and extend the life of the motor
· Longer cable connections can be used between the frequency converter and the motor
· Reduce external radiation by using unshielded cables in certain situations, which reduces the requirements for on-site wiring
· Effectively prevent premature motor damage caused by high dv/dt, overvoltage, motor overheating, and eddy current losses

Technical specifications

· Working voltage: 220VAC-690VAC
· Working current: 15A-1500A
· Operating frequency: 50/60Hz
· Carrier frequency: 2K-8K
· Insulation level: classF,H
· Pressure drop: 8% -12%
· Voltage harmonic distortion THD ≤ 5%
· No load current ≤ 8%
· Operating environment: -10...+45 ℃, rated value will not decrease. The maximum temperature can reach+55 ° C, and above 45 ° C, for every 1 ° C increase, the rated current decreases by 2%. · Protection level: IP00-IP22
· Maximum current: 1.5x rated current, lasting for 60 seconds
· Noise: ≤ 65dB
· Temperature rise: ≤ 75K
· Electrical strength: Iron core winding 3000VAC/50Hz/5mA/10S without flying fox breakdown (factory test) Insulation resistance: 1000VDC Insulation resistance>100MQ
· Altitude not exceeding 2000 meters
· Operating environment temperature -25 ° C~+45 ° C, relative humidity not exceeding 90%
· There are no harmful gases or flammable or explosive materials around
· The surrounding environment should have good ventilation conditions. If installed in a cabinet, ventilation equipment should be installed

Execution standards

· IEC289:1987 Reactor
· GB10229-88 Reactor

· JB9644-1999 Reactorused forsemiconductor electrical driving

Comparison of voltage and current waveforms before and after adding a sine wave filter

Product overview

Electronic schematic diagram

380VAC sine wave filter

Note: "A" above represents that the winding material is aluminum, and "C" represents that the winding material is copper.
2. The above are our regular standard sizes. Please contact our business personnel for specific parameters when placing an order; Non standard customization is possible.

3-690VAC 2% voltage drop input reactor

Note: "A" above represents that the winding material is aluminum, and "C" represents that the winding material is copper.
2. The above are our regular standard sizes. Please contact our business personnel for specific parameters when placing an order; Non standard customization is possible.