Current Transducer LTC 1000-T IPN = 1000 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 ÎP 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 @ ± 1000 A max @ ± 1200 A max @ ± 1000 A max @ ± 2000 A max ISN KN VC IC Vd 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 Ve R.m.s. voltage for partial discharge extinction 1000 A 0 .. ± 2400 1) A 10 / 10 kA/ms RM min RM max 0 0 0 0 15 7 50 7 200 1 : 5000 ± 15 .. 24 < 30 (@±24V) +IS 13.4 2) 1.5 3) > 2.8 Ω Ω Ω Ω mA V mA kV kV kV Accuracy - Dynamic performance data XG Overall accuracy @ IPN , TA = 25°C @ IPN , TA = - 40°C .. + 85°C Linearity < ± 0.4 <±1 < 0.1 % % % IO IOT Offset current @ IP = 0, TA = 25°C Thermal drift of IO Max ± 0.5 ±1 mA mA tr di/dt f Response time 4) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) ε L - 40°C .. + 85°C <1 > 100 DC .. 100 µs A/µs kHz Notes : Ambient operating temperature Ambient storage temperature Secondary coil resistance @ TA = 85°C Mass Standards 1) 2) 3) 4) • Closed loop (compensated) current transducer using the Hall effect • Insulated plastic case recognized according to UL 94-V0 • Railway equipment. 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 General data TA TS RS m Features (SMPS) - 40 .. + 85 °C - 45 .. + 90 °C 44 Ω 1270 g EN 50155 (01.12.20) • Power supplies for welding applications. With a di/dt of > 5 A/µs Between primary and secondary + shield Between secondary and shield With a di/dt of 100 A/µs. 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 Fastening torque max • Connection of secondary Fastening torque max Remarks ± 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 • 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. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.