Non-Invasive Current Transducer measures up to 4,000 A.May 28, 2009 -
Able to measure currents to 4,000 ARMS in conductors of up to 268 mm dia, ITL 4000-S allows isolated measurement of AC, DC, and pulsed currents up to three times nominal value for peak measurement at frequencies to 50 kHz (±1 dB). Closed-loop Fluxgate technology ensures measurement accuracy (±0.1% of IPN) over -40 to +70°C operating range. This accuracy also allows measurement of small DC currents in presence of large AC components.
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Original Press release
LEM Holding SA
8, chemin des Aulx
Plan-les-Ouates, , CH-1228
Switzerland
LEM Current Transducer Accurately Measures up to 4000A
Key points:
Large aperture over 250 mm diameter
Slim measuring head
High accuracy in wide temperature range
DC component detection in large AC currents
GENEVA, Switzerland and MILWAUKEE, WI (May 12, 2009) - LEM S.A., the world's leading manufacturer of isolated current and voltage measurement components, today introduced the ITL 4000-S current transducer for non-invasive measurement of currents up to 4000ARMS in conductors of up to 268mm diameter. The new transducer allows the isolated measurement of AC, DC, and pulsed currents, up to three times the nominal value for peak measurement at frequencies up to 50kHz (+/-1dB).
Using closed-loop Fluxgate technology, highly accurate measurements of +/-0.1 percent of IPN are achieved over the operating temperature range from -40°C to +70°C. This high level of accuracy also allows the measurement of small DC currents in the presence of large AC components, which is particularly useful in applications such as transformer protection. For example, it is possible to monitor +/-10A DC over a 4000ARMS AC current with an uncertainty of +/-1A over an operating temperature range from -25°C to +50°C. The technology also offers very good offset and gain thermal drift performance.
The large aperture of the ITL 4000-S makes it particularly suitable for measurements on high-voltage DC systems, which use large-diameter cables. It features high insulation for working voltages up to 1.5kVRMS in accordance with the EN 50178 standard.
The mechanical design of the transducer offers simplified access to the electronics for easy maintenance. This often avoids the need to disconnect the conductors in the final application.
The ITL 4000-S operates from a bipolar +/-24V supply, provides an analog current output, and is suitable for all industrial applications as qualified against the EN 50178 industrial standard. It is particularly suitable for DC current control in transformers, offshore wind turbines for DC power transmission, and leakage current measurement in any application with high primary currents.
LEM
LEM is a market leader in providing innovative and high quality solutions for measuring electrical parameters. Its core products - current and voltage transducers - are used in a broad range of applications in industrial, traction, energy, automation and automotive markets. LEM's strategy is to exploit the intrinsic strengths of its core business, and develop opportunities in new markets with new applications. LEM is a mid-size, global company with approximately 900 employees worldwide. It has production plants in Geneva (Switzerland), Machida (Japan), Beijing (China), plus regional sales offices, and offers a seamless service worldwide. Further information is available at: www.lem.com.
For further information please contact:
Suzanne Hochheimer
Corporate Communications Manager
Tel: +41 22 706 1257
E-Mail: SuH@lem.com
Website : www.lem.com
or
Andrea Doeringer
Hart-Boillot, LLC
Tel: +1 781 893 0053
E-Mail: adoeringer@hartboillot.com
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