3UF7933-0BA00-0 SIEMENS

The ‌SIEMENS Filter Modules‌ are a series of dedicated industrial electromagnetic compatibility (EMC) protection components, specially designed to suppress conducted interference, harmonic distortion and voltage spikes in industrial power and signal systems. They act as a reliable electromagnetic isolation barrier between the power grid, on-site equipment and automation systems, effectively filtering out high-frequency noise, surge interference and harmonic components that affect the stable operation of equipment. The full product line covers power line filters, sine-wave output filters, EMC input filters and signal line filters, and is fully compatible with Siemens SINAMICS drives, SIMATIC automation systems and low-voltage electrical products.

Core Product Parameters

• ‌Filter types‌: Classify into single-phase/three-phase power EMC filters, sine-wave output filters, dv/dt filters, and analog/digital signal filters, covering AC 120V to 690V wide voltage range
• ‌Attenuation performance‌: Maximum insertion loss reaches 70dB at 150kHz~30MHz frequency band, effectively suppressing high-frequency conducted interference
• ‌Current carrying capacity‌: Support rated current from 1A to 2000A, which can match the full power range of Siemens low-voltage and medium-voltage drive products
• ‌Protection level‌: Power filter models meet IP20 for cabinet installation, and IP65 for on-site direct installation models
• ‌Safety certification‌: All products comply with IEC 61800-3 EMC standards and UL/CE industrial safety certifications, with built-in over-current and over-temperature protection
• ‌Operating environment‌: Industrial wide temperature range from -25°C to +60°C, supporting 24/7 continuous operation without derating
• ‌Harmonic suppression‌: Special harmonic filter models can reduce total harmonic distortion (THDi) to less than 5%, far lower than the 30% level of unfiltered systems

Key Product Advantages

1. ‌High-precision interference suppression‌: Optimized LC circuit design, which can effectively filter high-frequency noise generated by high-speed switching of IGBTs, avoiding signal interference of nearby sensors, instruments and communication equipment
2. ‌Extend equipment service life‌: The sine-wave output filter can convert the PWM pulse wave of the frequency converter into a smooth sine wave, reduce the insulation aging of the motor cable and the motor winding, and extend the service life of the motor by more than 30%
3. ‌Seamless system matching‌: It is natively calibrated and matched with Siemens SINAMICS drive series, no extra parameter adjustment is required, and no extra loss or resonance will be generated
4. ‌High industrial reliability‌: All adopt industrial-grade components, with reinforced insulation design, mean time between failures (MTBF) exceeding 800,000 hours, suitable for long-term operation in harsh industrial environments
5. ‌Compact space saving‌: Highly integrated modular design, the volume is 20% smaller than traditional third-party filters of the same specification, which greatly saves the installation space inside the control cabinet

Important Notes

• Before installation, confirm that the rated voltage, rated current and wiring mode of the filter are completely consistent with the matched drive or power system, and over-current operation is strictly forbidden
• The input and output wiring of the power filter must be routed separately, and it is not allowed to tie the input and output cables together, otherwise the high-frequency interference will be coupled and the filtering effect will be lost
• The metal shell of the filter must be reliably connected to the protective grounding bus of the control cabinet with a short and thick copper bar, and the grounding resistance should be less than 0.5Ω to give full play to the EMC filtering performance
• The sine-wave output filter must be installed between the frequency converter and the motor, and it is not allowed to be connected to the input power side by mistake, otherwise the filter will be permanently damaged
• Regularly check the temperature rise of the filter housing every 12 months, and the normal operating temperature should not exceed 70°C. If abnormal overheating is found, stop the machine for inspection in time