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LF305-S Scheda tecnica(PDF) 1 Page - LEM |
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LF305-S Scheda tecnica(HTML) 1 Page - LEM |
1 / 3 page www.lem.com LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 061031/7 page 1/3 Current Transducer LF 305-S For the electronic measurement of currents: DC, AC, pulsed..., with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). Electrical data I PN Primary nominal current rms 300 A I PM Primary current, measuring range 0 .. ± 500 A R M Measuring resistance R M mini R M maxi with ± 12 V @ ± 300 A max 0 39 Ω @ ± 500 A max 0 12 Ω with ± 15 V @ ± 300 A max 0 58 Ω @ ± 500 A max 0 22 Ω with ± 20 V @ ± 300 A max 15 93 Ω @ ± 500 A max 15 45 Ω I SN Secondary nominal current rms 150 mA K N Conversion ratio 1 : 2000 V C Supply voltage (± 5 %) ± 12 .. 20 V I C Current consumption 26 (@±20V) + I S mA Accuracy - Dynamic performance data X G Overall accuracy @ I PN , T A = 25°C ± 0.4 % ε L Linearity error < 0.1 % Typ Maxi I O Offset current @ I P = 0, T A = 25°C ± 0.20 mA I OM Magnetic offset current 1) @ I P = 0 and specified RM, after an overload of 3 x I PN ± 0.08 mA I OT Temperature variation of I O - 10°C .. + 70°C ± 0.1 ± 0.30 mA t ra Reaction time @ 10 % of I PN < 500 ns t r Response time 2) to 90 % of I PN step < 1 µs di/dt di/dt accurately followed > 100 A/µs BW Frequency bandwidth (- 1 dB) DC .. 100 kHz General data T A Ambient operating temperature - 10 .. + 70 °C T S Ambient storage temperature - 25 .. + 85 °C R S Secondary coil resistance @ T A = 70°C 25 Ω m Mass 95 g Standards EN 50178: 1997 Notes: 1) The result of the coercive field of the magnetic circuit 2) With a di/dt of 100 A/µs. Features • Closed loop (compensated) current transducer using the Hall effect • Isolated plastic case recognized according to UL 94-V0. Advantages • Excellent accuracy • Very good linearity • Low temperature drift • Optimized response time • Wide frequency bandwidth • No insertion losses • High immunity to external interference • Current overload capability. Applications • AC variable speed drives and servo motor drives • Static converters for DC motor drives • Battery supplied applications • Uninterruptible Power Supplies (UPS) • Switched Mode Power Supplies (SMPS) • Power supplies for welding applications. Application domain • Industrial. I PN = 300 A 16167 |
Codice articolo simile - LF305-S_06 |
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Descrizione simile - LF305-S_06 |
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