Current Transducer LT 4000-S IPN = 4000 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 ± 24 V ISN KN VC IC Vd @ ± 4000 A max @ ± 6000 A max 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 4000 0 .. ± 6000 R M min R M max 0 0 10 2 A A Ω Ω 800 mA 1 : 5000 ± 24 V 35 (@ ± 24 V) + IS mA 6 kV Accuracy - Dynamic performance data XG ε Overall accuracy @ IPN , TA = 25°C Linearity L ± 0.5 < 0.1 Typ % % Max ± 0.8 ± 0.8 IO IOT Offset current @ IP = 0, TA = 25°C Thermal drift of IO - 25°C .. + 70°C ± 0.6 tr di/dt f Response time 1) @ 90 % of IP max di/dt accurately followed Frequency bandwidth (- 1 dB) <1 > 50 DC .. 100 mA mA µs A/µs kHz Notes : Ambient operating temperature Ambient storage temperature Secondary coil resistance @ TA = 70°C Mass Standards 2) 1) 2) •Closed loop (compensated) current transducer using the Hall effect •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 General data TA TS RS m Features - 25 .. + 70 - 40 .. + 85 15 6 EN 50178 °C °C Ω kg (UPS) •Switched Mode Power Supplies (SMPS) •Power supplies for welding applications. With a di/dt of 100 A/µs A list of corresponding tests is available 980728/8 LEM Components w w w .lem.com Dimensions LT 4000-S (in mm. 1 mm = 0.0394 inch) Front view Left view Secondary terminals Terminal + : supply voltage + 24 V Terminal M : measure Terminal - : supply voltage - 24 V Connection Top view Mechanical characteristics •General tolerance •Fastening •Primary through-hole •Connection of secondary fastening torque Remarks ± 1.0 mm 4 holes ∅ 10.5 mm ∅ 102 mm M5 threaded studs 2.2 Nm •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.