Datenblatt-Suchmaschine für elektronische Bauteile |
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LA55-P Datenblatt(PDF) 1 Page - LEM |
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LA55-P Datenblatt(HTML) 1 Page - LEM |
1 / 2 page page 1/2 www .lem.com LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 070103/11 Current Transducer LA 55-P 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 50 A I PM Primary current, measuring range 0 .. ± 70 A R M Measuring resistance @ T A = 70°C T A = 85°C R M miniRM maxi RM mini RM maxi with ± 12 V @ ± 50 A maxi 10 100 60 95 Ω @ ± 70 A maxi 10 50 601) 601) Ω with ± 15 V @ ± 50 A maxi 50 160 135 155 Ω @ ± 70 A maxi 50 90 1352) 1352) Ω I SN Secondary nominal current rms 50 mA K N Conversion ratio 1 : 1000 V C Supply voltage (± 5 %) ± 12 .. 15 V I C Current consumption 10 (@ ±15 V) + I S mA V d Rms voltage for AC isolation test, 50 Hz, 1 min 2.5 kV Accuracy - Dynamic performance data X Accuracy @ I PN , TA = 25°C @ ± 15 V (± 5 %) ± 0.65 % @ ± 12 .. 15 V (± 5 %) ± 0.90 % ε L Linearity error < 0.15 % Typ Maxi I O Offset current @ I P = 0, TA = 25°C ± 0.2 mA I OM Magnetic offset current 3) @ I P = 0 and specified RM after an overload of 3 x I PN ± 0.3 mA I OT Temperature variation of I O 0°C .. + 70°C ± 0.1 ± 0.5 mA - 25°C .. + 85°C ± 0.1 ± 0.6 mA t ra Reaction time @ 10 % of I PN < 500 n s t r Response time @ 90 % of I PN Step < 1 µs di/dt di/dt accurately followed > 200 A/µs BW Frequency bandwidth (- 1 dB) DC .. 200 kHz General data T A Ambient operating temperature - 25 .. + 85 °C T S Ambient storage temperature - 40 .. + 90 °C R S Secondary coil resistance @ T A = 70°C 80 Ω T A = 85°C 85 Ω m Mass 18 g Standards EN 50178: 1997 Notes: 1) Measuring range limited to ± 60 A maxi 2) Measuring range limited to ± 55 A maxi 3) Result of the coercive field of the magnetic circuit. Features • Closed loop (compensated) current transducer using the Hall effect • Printed circuit board mounting • 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 = 50 A 16019 |
Ähnliche Teilenummer - LA55-P |
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Ähnliche Beschreibung - LA55-P |
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