Vacuumschmelze is a leading global manufacturer of advanced magnetic materials and related products. They continuously innovate their products and achieve a sustainable competitive advantage. Vacuumschmelze’s range of products comprises a broad array of advanced semi-finished materials and parts, inductive components for electronics, magnets and magnet systems for use in a wide variety of fields and industries spanning watch-making and medical technology, renewable energies, shipbuilding, automotive and aviation.
Vacuumschmelze High Current Industrial Current Sensors are designed for a current of up to 1000Arms with a measuring range of up to 2500Apeak. These VAC Industrial Current Sensors offer low offset and gain errors, low temperature drift, and excellent long-term stability. These sensors also offer low power consumption due to PWM compensation current drive stage. They also offer excellent dynamic properties (rise time, pulse response) due to a low winding capacity of the compensation current winding.
Vacuumschmelze offers a variety of high-performance Transformers, including Power Line Coupling (PLC), Gate Drive, Current, and Interface devices. VAC current transformers for electronic electricity meters are a new series of DC tolerant VITROPERM® CTs with high linearity performance and very compact design. The VAC range of powerline transformers was designed specifically for Advanced Metering Management (AMM) systems and is ideally suited for smart metering applications via the conventional supply network system. VAC IGBT drive transformers are designed for power supplies, welding equipment, UPS, solar inverters, and motor control systems. VAC also offers a range of audio and signal interface transformers.
Vacuumschmelze (VAC) Current Sensors utilize amorphous field detector technology which makes the sensor more accurate and also improves linear performance with changes in temperature. The main function of the Current Sensors from VAC is measuring currents from DC up to high frequencies (approximately 200kHz). These sensors contain a galvanic separation between the primary circuit and the output signal (e.g. according to EN 50178 or EN 61800) and typical currents range from a few amperes up to several hundred amperes full range. Some sensor types can measure more than 1000 ampere peak current. The accuracy of the VAC current sensors lies in the range of <1% of the nominal current. The VAC-invented measuring principle of the closed-loop sensor with magnetic probe as a zero field detector is distinguished by maximum precision of the current detection. The detected currents range from 6 Arms to 700 Arms.
Vacuumschmelze (VAC) VITROPERM® Cores are manufactured with a tape wound nanocrystalline material that features higher permeability when compared with ferrite cores. VITROPERM permeability ranges from 25,000 to over 100,000 compared to 5,000 to 15,000 for ferrites. The high permeability of the nanocrystalline core material achieves superior characteristics at low and middle frequencies, as well as in the high frequency range when an optimized winding arrangement is selected. The VITROPERM Cores from VAC are enclosed in a plastic casing that is suitable for direct winding and offers good mechanical protection of the nanocrystalline core material, allowing the best magnetic properties and highest permeability levels to be maintained. VITROPERM cores are available with different AL-levels for many core sizes. Common mode chokes with toroidal tape wound cores of VITROPERM allow
the effective attenuation of asymmetrical and conducted high frequency
Vacuumschmelze (VAC) VITROPERM® Common Mode Chokes
are manufactured with a tape wound nanocrystalline material that offers
a permeability range of 25,000 to over 100,000 when compared to ferrite
permeability that ranges from 5,000 to 15,000. The VITROPERM Common Mode Chokes from VAC offer several advantages,
including small size,
reduction of filter designs from two or three chokes to a single choke,
high efficiency (low power loss due to less copper windings required),
high operating temperature compared to ferrite, no operating noise, low
weight and volume, better shock and vibration when compared to ferrite,
and linear performance
over temperature range. These chokes are suitable for high currents
and/or high voltages.