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LA125-P Datasheet(PDF) 1 Page - LEM |
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LA125-P Datasheet(HTML) 1 Page - LEM |
1 / 2 page Current Transducer LA 125-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 r.m.s. current 125 A I P Primary current, measuring range 0 .. ± 200 A R M Measuring resistance @ T A = 70°C T A = 85°C R M min RM max R M min RM max with ± 12 V @ ± 125 A max 5 52 14 50 Ω @ ± 200 A max 5 20 14 18 Ω with ± 15 V @ ± 125 A max 25 74 40 72 Ω @ ± 200 A max 25 34 40 1) 40 1) Ω I SN Secondary nominal r.m.s. current 125 mA K N Conversion ratio 1 : 1000 V C Supply voltage (± 5 %) ± 12 .. 15 V I C Current consumption 16 (@ ± 15 V) + I S mA V d R.m.s. voltage for AC isolation test, 50 Hz, 1 mn 3 kV Accuracy - Dynamic performance data X Accuracy @ I PN , TA = 25°C @ ± 15 V (± 5 %) ± 0.60 % @ ± 12 .. 15 V (± 5 %) ± 0.80 % ε L Linearity < 0.15 % Typ Max I O Offset current @ I P = 0, TA = 25°C ± 0.40 mA I OM Residual current 2) @ I P = 0, after an overload of 3 x IPN ± 0.50 mA I OT Thermal drift of I O 0°C .. + 70°C ± 0.15 ± 0.50 mA - 25°C .. + 85°C ± 0.15 ± 0.60 mA t ra Reaction time @ 10 % of I P max < 500 n s t r Response time 3) 4) @ 90 % of I P max < 1 µs di/dt di/dt accurately followed 4) > 200 A/µs f Frequency bandwidth 4) (- 1 dB) DC .. 100 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 32 Ω T A = 85°C 33.5 Ω m Mass 40 g Standards 5) EN 50178 Notes : 1) Measuring range limited to ± 180 A max 2) The result of the coercive field of the magnetic circuit 3) With a di/dt of 100 A/µs 4) The primary conductor is best filling the through-hole and/or the return of the primary conductor is above the top of the transducer 5) A list of corresponding tests is available Features •Closed loop (compensated) current transducer using the Hall effect •Printed circuit board mounting •Insulated 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. I PN = 125 A 980716/5 LEM Components ww w .lem.com |
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