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| Current Transducer LTC 1000-T 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). IPN = 1000 A Electrical data IPN IP IP RM Primary nominal r.m.s. current Primary current, measuring range @ 24 V Max overload not measurable Measuring resistance with 15 V with 24 V ISN KN VC IC Vd Ve @ 1000 A max @ 1200 A max @ 1000 A max @ 2000 A max 1000 A 0 .. 2400 1) A 10 / 10 kA/ms RM min RM max 0 0 0 0 15 7 50 7 mA V mA kV kV kV Features * Closed loop (compensated) current transducer using the Hall effect * Insulated plastic case recognized according to UL 94-V0 * Railway equipment. 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. voltage for partial discharge extinction 200 1 : 5000 15 .. 24 < 30 (@24V) +IS 13.4 2) 1.5 3) > 2.8 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 Overall accuracy @ IPN , TA = 25C @ IPN , TA = - 40C .. + 85C Linearity Offset current @ IP = 0, TA = 25C Thermal drift of IO Response time 4) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) < 0.4 <1 < 0.1 Max 0.5 1 <1 > 100 DC .. 100 % % % mA mA s A/s kHz L Applications * AC variable speed drives and servo motor drives IO IOT tr di/dt f - 40C .. + 85C * Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies (UPS) General data TA TS RS m Ambient operating temperature Ambient storage temperature Secondary coil resistance @ TA = 85C Mass Standards 1) 2) 3) 4) * Switched Mode Power Supplies (SMPS) - 40 .. + 85 C - 45 .. + 90 C 44 1270 g EN 50155 (01.12.20) * Power supplies for welding applications. Notes : With a di/dt of > 5 A/s Between primary and secondary + shield Between secondary and shield With a di/dt of 100 A/s. 030528/0 LEM Components w w w.lem.com Dimensions LTC 1000-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 Terminal E : shield Connection or Top view Mechanical characteristics * General tolerance * Fixing the transducer 1 mm 2 holes 13 mm or by the primary bar 2 steel screws M12 24.5 Nm M5 threaded studs 2.2 Nm or 1.62 Lb.-Ft. Faston 6.3 x 0.8 mm Remarks * IS is positive when IP flows in the direction of the arrow. * Temperature of the primary conductor should not exceed 100C. * Dynamic performances (di/dt and response time) are best with a single bar completely filling the primary hole. Fastening torque max * Connection of secondary Fastening torque max LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. |
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