3SK1211-1BW20 SIEMENS Filter Module

Description

3SK1211-1BW20 SIEMENS Filter Module

Product Dimensions：

Product Description

A Siemens Filter Module is a passive or active electrical component engineered to improve power quality and ensure electromagnetic compatibility (EMC) within industrial control cabinets. It operates by attenuating high-frequency noise and harmonics, which are often generated by switching components like Variable Frequency Drives (VFDs) or Switched-Mode Power Supplies (SMPS). This is crucial for protecting sensitive electronic components and complying with international EMC standards.

The main purpose of a Filter Module is to clean the power signal by suppressing voltage spikes, radio frequency interference (RFI), and harmonic distortion:

• Noise Suppression: Designed using components (like inductors, capacitors, and sometimes resistors) to create a barrier against conducted and radiated electrical noise.

• Harmonic Mitigation: Particularly in the case of Line Filters and Sine-Wave Filters used with drives, the module reduces harmonic currents that can pollute the power grid and cause stress on upstream equipment.

• Safety and Compliance: Ensures that the equipment adheres to stringent EMC directives (e.g., CE, UL) regarding the emission and immunity of electromagnetic disturbances.

• Mounting Flexibility: Typically offered in robust, industrial-grade enclosures suitable for cabinet installation (e.g., wall mounting or booksize format).

Product Parameters

The technical parameters are driven by the electrical system requirements and the filter’s function:

Product Advantages

• Increased System Reliability: By eliminating electrical noise, the filter module prevents glitches, communication errors, and spurious trips in sensitive control and sensor electronics.

• Extended Equipment Lifetime: Reduced voltage stress and cleaner power lead to less thermal stress and longer operational life for connected components like motors, PLCs, and power supplies.

• Regulatory Compliance: Essential for achieving the required emission limits for industrial environments, enabling the entire machine or plant to meet international EMC standards.

• Improved Power Quality: Reduces harmonic distortion in the power system, leading to better utilization of electrical infrastructure and lower energy losses.

Important Considerations (Notes)

• Correct Sizing: The filter must be correctly sized based on the rated current and voltage of the connected load (e.g., the drive or power supply) for effective operation and to prevent filter damage.

• Grounding: Effective filtering relies on low-impedance, high-frequency grounding. The installation instructions regarding shield connections and cabinet grounding must be followed precisely.

• Installation Location: The filter should be installed as close as possible to the source of the noise (e.g., the input of the drive) or the equipment being protected to maximize its effectiveness.

• Leakage Current: Some industrial filters, particularly RFI filters, may have a high earth leakage current. This must be accounted for when selecting residual current devices (RCDs) or ground fault protection.

Product Applications

Siemens Filter Modules are indispensable in applications where power quality and EMC are critical:

• Variable Speed Drive Systems: Used as Line Filters to suppress incoming and outgoing radio frequency interference and as Sine-Wave Filters to protect the motor windings from high $text{dV/dt}$ stress.

• Sensitive Industrial Networks: Installed on the main power supply line of control cabinets containing sophisticated instrumentation, PLCs, and communication equipment to ensure data integrity.

• Machine Tools and Robotics: Any application with heavy switching loads, where high levels of electrical noise are generated and must be contained to prevent interference with precision equipment.

• Power Distribution: Active filters used in large power distribution systems to dynamically mitigate harmonic distortion caused by multiple non-linear loads across a facility.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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