Current Transducer LA 205-S IPN = 200 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 max RM Primary nominal r.m.s. current Primary current, measuring range Measuring overload 1) Measuring resistance @ with ± 12 V with ± 15 V ISN KN VC IC Vb 200 0 .. ± 300 600 TA = 70°C TA = 85°C RM min RM max RM min RM max @ ± 200 A max @ ± 300 A max @ ± 200 A max @ ± 300 A max 0 0 5 5 68 33 95 50 Secondary nominal r.m.s. current Conversion ratio Supply voltage (± 5 %) Current consumption R.m.s rated voltage 2), safe separation basic isolation 0 0 5 5 A A A ε transducer using the Hall effect Ω Ω Ω Ω 66 30 93 49 100 mA 1 : 2000 ± 12 .. 15 V 20 (@ ± 15 V) + IS mA 1625 V 3250 V Overall accuracy @ IPN , TA = 25°C Linearity L ± 0.8 < 0.1 IO IOM IOT Offset current @ IP = 0, TA = 25°C Residual current 3) @ IP = 0, after an overload of 3 x IPN Thermal drift of IO - 10°C .. + 85°C Max ± 0.15 ± 0.50 ± 0.15 ± 0.30 tra tr di/dt f Reaction time @ 10 % of IPN Response time 4) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 3 dB) < 500 <1 > 100 DC .. 100 • Closed loop (compensated) current • Insulated plastic case recognized Accuracy - Dynamic performance data XG Features % % according to UL 94-V0 • Patent pending. 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 Typ mA mA mA ns µs A/µs kHz • 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 (SMPS) • Power supplies for welding General data TA TS RS Ambient operating temperature Ambient storage temperature Secondary coil resistance @ m TA = 70°C TA = 85°C - 10 .. + 85 - 40 .. + 90 35 37 110 EN 50178 Mass Standards 5) Notes : 1) 3 mn/hour @ VC = ± 15 V, R M = 5 Ω 2) Pollution class nr 2. W ith a non insulated primary bar which fills the through-hole 3) The result of the coercive field of the magnetic circuit 4) With a di/dt of 100 A/µs 5) A list of corresponding tests is available LEM Components °C °C Ω Ω g applications. 020711/6 w w w .lem.com Dimensions LA 205-S (in mm. 1 mm = 0.0394 inch) Front view Left view Connection Top view Mechanical characteristics • • • • General tolerance Fastening Primary through-hole Connection of secondary Remarks ± 0.5 mm 2 holes ∅ 5.5 mm 23 x 18 mm Molex 5046-04/AG • 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.