Current Transducer LT 505-S IPN = 500 A 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 IPN IP RM Primary nominal r.m.s. current Primary current, measuring range Measuring resistance @ with ± 15 V with ± 24 V ISN KN VC IC Vd Vb @ ± 500 @ ± 800 @ ± 500 @ ± 1200 500 0 .. ± 1200 TA = 70°C TA = 85°C RM min RM max RM min RM max A max A max A max A max 0 0 0 0 Secondary nominal r.m.s. current Conversion ratio Supply voltage (± 5 %) Current consumption R.m.s. voltage for AC isolation test, 50 Hz, 1 mn R.m.s. rated voltage 1), safe separation basic isolation 65 15 145 22 0 0 15 15 60 12 140 18 A A Features •Closed loop (compensated) current transducer using the Hall effect Ω Ω Ω Ω 100 mA 1 : 5000 ± 15 .. 24 V 30 (@ ± 24 V) + IS mA 6 kV 1750 V 3500 V •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. Accuracy - Dynamic performance data XG ε Overall accuracy @ IPN , TA = 25°C Linearity L ± 0.6 < 0.1 Typ % % Max ± 0.4 ± 0.5 IO IOT Offset current @ IP = 0, TA = 25°C Thermal drift of IO - 10°C .. + 85°C ± 0.3 tr di/dt f Response time 2) @ 90 % of IP max di/dt accurately followed Frequency bandwidth (- 1 dB) <1 > 50 DC .. 150 mA mA µs A/µs kHz 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 General data TA TS RS Ambient operating temperature Ambient storage temperature Secondary coil resistance @ m Mass Standards 3) Notes : 1) 2) 3) (SMPS) TA = 70°C TA = 85°C - 10 .. + 85 - 25 .. + 100 65 69 400 EN 50178 Pollution class 2. With a non insulated primary bar which fills the through-hole With a di/dt of 100 A/µs A list of corresponding tests is available LEM Components °C °C Ω Ω g •Power supplies for welding applications. 980708/6 w w w .lem.com Dimensions LT 505-S (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 •General tolerance •Fastening •Primary through-hole •Connection of secondary Remarks ± 0.5 mm 4 holes ∅ 6.5 mm 40.5 x 40.5 mm Faston 6.3 x 0.8 mm •IS is positive when IP flows in the direction of the arrow. •Temperature of the primary conductor should not exceed 100°C. •Dynamic performances (di/dt and response time) are best with a single bar completely filling the primary hole. •This is a standard model. For different versions (supply 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.