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ECOsine™ Schaffner Power Quality Filters Calm Down Harmonic Waves

May 25, 2011

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The introduction of Schaffner ECOsine™ filters concludes the era of bulky passive harmonic mitigation products. Superior filter topology and advanced temperature management result in high performance filters in a surprisingly compact, lightweight, and contemporary package.

With the introduction of ECOsine™, Schaffner, the international leader in the fields of electromagnetic compatibility and power quality, is raising the bar for harmonic mitigation products. The new load-applied passive harmonic filters represent the ideal solution for three-phase power electronics with 6-pulse rectifier front ends, such as AC and DC motor drives.
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As a result of the significant reduction in total harmonic current distortion (THID) to <5%, ECOsine™ filters can uniquely guarantee compliance with the toughest requirements of IEEE 519 and other stringent international power quality standards. Rectifier peak and RMS input current are reduced and a pure sine wave is drawn from the grid. The reduction in current consumption for the same power level saves precious energy and helps to make better use of existing electric system capacity. For new installations, the use of ECOsine™ filters even allows electric conductors, fuses, and breakers to be downsized, or enables a greater number of drives to be powered by a given size of distribution transformer.
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ECOsine™ harmonic filters are available in two ranges: one for 50Hz grids (FN 3410 series) and the other for 60Hz systems (FN 3412 series). They can easily be selected on the basis of the actual input power demand of an individual load or a group of loads. Because of their compact package, they can be installed right inside the electrical cabinet next to the drive. A simple plug-and-play concept allows for quick installation, wiring, and commissioning, without the need for system analysis or the involvement of highly trained specialists.
A standard safety feature continuously monitors filter temperature, controls the internal fans, and provides an NC/C contact for the seamless integration into a machine or system control unit.
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ECOsine™ FN 3410 filters are designed for 380-500V, 50Hz grids and are available for power ratings from 4 to 160kW. FN 3412 filters are suitable for 440-480V, 60Hz grids with standard ratings ranging from 5 to 250HP. All filters are UL-approved, CE-marked, and RoHS-compliant. As a custom design specialist, Schaffner can always provide solutions beyond standard filter specifications, for higher power ratings, different grid types, or to meet local utility requirements.
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Schurter UP1 2-Pole Appliance Switch with Built-In Undervoltage Trip Release Prevents Uncontrolled Restarts Under Conditions of Intense Voltage Drops or with Temporary Losses of Voltage

May 13, 2011

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UP1 Undervoltage Release Switch for Operators Safety

The new UP1 undervoltage switch monitors the supply voltage and actuates a trip release when there is an intense drop in voltage or when the supply voltage is interrupted. As soon as the supply voltage returns in full, the machine or equipment does not automatically restart in an uncontrolled manner, but must be consciously switched on again. Using this function, dangerous situations for operating personnel as well as for the surroundings of the device itself can be prevented.

The UP1 is a 2-pole circuit breaker with additional undervoltage monitoring actuates a trip re-lease with a loss of voltage or an intense voltage drop. The breaker is available with rocker actuation for snap-in mounting or with push-button actuation for both snap-in mounting as well as screw fitting. Protection covers against the ingress of dust and spray water make the use of the breaker in harsh environments such as wood-, masonry- or metal-workings possible.

The requirement for the use of undervoltage protection is in existence for applications such as gardening equipment, gardening shredders, floor cleaning and sanding devices, electrical tools such as circular saws, band saws, grinding machines and drills. Further examples are fuel pumps, coffee-milling devices, fruit juice squeezing machines and fruit juice centrifuges.

The UP1 undervoltage circuit breaker is configured differently in its hardware for various net-work supply voltages und must be therefore ordered for the appropriate supply voltage. Rated switching category is AC-1 16A / AC-3 14.5A @ AC 240 V. The breakers are approved to IEC 60947, UL 508, CSA 22.2 No.14-95 and also contain a horsepower rating.

Technical Characteristics:
- 2-pole switch
- Undervoltage trip release with restart prevention
- Available with rocker or push-button actuation
- Dust and jetting water protection to IP 65
- VDE & cURus approvals for rated currents AC-1 16A / AC-3 14.5A @ AC 240V

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Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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