Current Transducer LT 505-T I = 500 A PN 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 Primary nominal r.m.s. current 500 A Features PN I Primary current, measuring range 0 .. ± 1200 A P R Measuring resistance @ T = 70°C T = 85°C ·Closed loop (compensated) current M A A R R R R transducer using the Hall effect M min M max M min M max ·Insulated plastic case recognized with ± 15 V @ ± 500 A 0 65 0 60 W max according to UL 94-V0. @ ± 800 A 0 15 0 12 W max with ± 24 V @ ± 500 A 0 145 15 140 W max Advantages @ ± 1200 A 0 22 15 18 W max I Secondary nominal r.m.s. current 100 mA SN ·Excellent accuracy K Conversion ratio 1 : 5000 N ·Very good linearity V Supply voltage (± 5 %) ± 15 .. 24 V C ·Low temperature drift I Current consumption 30 (@ ± 24 V) + I mA C S ·Optimized response time V R.m.s. voltage for AC isolation test, 50 Hz, 1 mn 6 kV d ·Wide frequency bandwidth 1) V R.m.s. rated voltage , safe separation 1750 V b ·No insertion losses basic isolation 3500 V ·High immunity to external interference Accuracy - Dynamic performance data ·Current overload capability. X Overall accuracy @ I , T = 25°C ± 0.6 % G PN A Applications e Linearity < 0.1 % L Typ Max ·AC variable speed drives and servo I Offset current @ I = 0, T = 25°C ± 0.4 mA O P A motor drives I Thermal drift of I - 10°C .. + 85°C ± 0.3 ± 0.5 mA OT O ·Static converters for DC motor drives 2) t Response time @ 90 % of I < 1 µs ·Battery supplied applications r P max di/dt di/dt accurately followed > 50 A/µs ·Uninterruptible Power Supplies f Frequency bandwidth (- 1 dB) DC .. 150 kHz (UPS) ·Switched Mode Power Supplies General data (SMPS) ·Power supplies for welding T Ambient operating temperature - 10 .. + 85 °C A applications. T Ambient storage temperature - 25 .. + 100 °C S R Secondary coil resistance @ T = 70°C 65 W S A T = 85°C 69 W A m Mass 850 g 3) Standards EN 50178 1) Notes : Pollution class 2. With a non insulated primary bar which fills the through-hole 2) With a di/dt of 100 A/µs 3) A list of corresponding tests is available 980716/2 LEM Components www.lem.com Dimensions LT 505-T (in mm. 1 mm = 0.0394 inch) Front view Left view Secondary terminals Terminal + : supply voltage + 15 .. 24 V Terminal M : measure Terminal - : supply voltage - 15 .. 24 V Connection Top view Mechanical characteristics Remarks ·General tolerance ± 0.5 mm ·I is positive when I flows in the direction of the arrow. S P ·Fastening 4 holes Æ 6.5 mm ·Temperature of the primary conductor should not exceed or by the primary bar 100°C. ·Connection of primary 2 holes Æ 13 mm ·This is a standard model. For different versions (supply ·Connection of secondary Faston 6.3 x 0.8 mm voltages, turns ratios, unidirectional measurements...), please contact us. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.